80	func initGops() error {
81		if !flagGops {
82			return nil
83		}
84
85		if err := agent.Listen(agent.Options{}); err != nil {
86			return fmt.Errorf("starting gops agent: %w", err)
87		}
88		return nil
89	}
90
91	func initConfiguration() error {
92		ccconf.Init(flagConfigFile)
93
94		cfg := ccconf.GetPackageConfig("main")
95		if cfg == nil {
96			return fmt.Errorf("main configuration must be present")
97		}
98
99		config.Init(cfg)
100		return nil
101	}
102
103	func initDatabase() error {
104		if config.Keys.DbConfig != nil {
105			cfg := repository.DefaultConfig()
106			dc := config.Keys.DbConfig
107			if dc.CacheSizeMB > 0 {
108				cfg.DbCacheSizeMB = dc.CacheSizeMB
109			}
110			if dc.SoftHeapLimitMB > 0 {
111				cfg.DbSoftHeapLimitMB = dc.SoftHeapLimitMB
112			}
113			if dc.MaxOpenConnections > 0 {
114				cfg.MaxOpenConnections = dc.MaxOpenConnections
115			}
116			if dc.MaxIdleConnections > 0 {
117				cfg.MaxIdleConnections = dc.MaxIdleConnections
118			}
119			if dc.ConnectionMaxIdleTimeMins > 0 {
120				cfg.ConnectionMaxIdleTime = time.Duration(dc.ConnectionMaxIdleTimeMins) * time.Minute
121			}
122			if dc.BusyTimeoutMs > 0 {
123				cfg.BusyTimeoutMs = dc.BusyTimeoutMs
124			}
125			repository.SetConfig(cfg)
126		}
127		repository.Connect(config.Keys.DB)
128		return nil
129	}
130
131	func handleDatabaseCommands() error {
132		if flagMigrateDB {
133			err := repository.MigrateDB(config.Keys.DB)
134			if err != nil {
135				return fmt.Errorf("migrating database to version %d: %w", repository.Version, err)
136			}
137			cclog.Exitf("MigrateDB Success: Migrated SQLite database at '%s' to version %d.\n",
138				config.Keys.DB, repository.Version)
139		}
140
141		if flagRevertDB {
142			err := repository.RevertDB(config.Keys.DB)
143			if err != nil {
144				return fmt.Errorf("reverting database to version %d: %w", repository.Version-1, err)
145			}
146			cclog.Exitf("RevertDB Success: Reverted SQLite database at '%s' to version %d.\n",
147				config.Keys.DB, repository.Version-1)
148		}
149
150		if flagForceDB {
151			err := repository.ForceDB(config.Keys.DB)
152			if err != nil {
153				return fmt.Errorf("forcing database to version %d: %w", repository.Version, err)
154			}
155			cclog.Exitf("ForceDB Success: Forced SQLite database at '%s' to version %d.\n",
156				config.Keys.DB, repository.Version)
157		}
158
159		return nil
160	}
161
162	func handleUserCommands() error {
163		if config.Keys.DisableAuthentication && (flagNewUser != "" || flagDelUser != "") {
164			return fmt.Errorf("--add-user and --del-user can only be used if authentication is enabled")
165		}
166
167		// Always initialize the auth subsystem so the HTTP server and REST API have a
168		// valid (non-nil) auth instance, even when authentication is disabled. With
169		// authentication disabled, Init only sets up an ephemeral session store and
170		// registers no authenticators (see auth.Init).
171		if cfg := ccconf.GetPackageConfig("auth"); cfg != nil {
172			auth.Init(&cfg)
173		} else {
174			if !config.Keys.DisableAuthentication {
175				cclog.Warn("Authentication enabled but no auth configuration found")
176			}
177			auth.Init(nil)
178		}
179
180		if !config.Keys.DisableAuthentication {
181			// Check for default security keys
182			checkDefaultSecurityKeys()
183
184			if flagNewUser != "" {
185				if err := addUser(flagNewUser); err != nil {
186					return err
187				}
188			}
189

func initGops() error {
	if !flagGops {
		return nil
	}

	if err := agent.Listen(agent.Options{}); err != nil {
		return fmt.Errorf("starting gops agent: %w", err)
	}
	return nil
}

func initConfiguration() error {
	ccconf.Init(flagConfigFile)

	cfg := ccconf.GetPackageConfig("main")
	if cfg == nil {
		return fmt.Errorf("main configuration must be present")
	}

	config.Init(cfg)
	return nil
}

func initDatabase() error {
	if config.Keys.DbConfig != nil {
		cfg := repository.DefaultConfig()
		dc := config.Keys.DbConfig
		if dc.CacheSizeMB > 0 {
			cfg.DbCacheSizeMB = dc.CacheSizeMB
		}
		if dc.SoftHeapLimitMB > 0 {
			cfg.DbSoftHeapLimitMB = dc.SoftHeapLimitMB
		}
		if dc.MaxOpenConnections > 0 {
			cfg.MaxOpenConnections = dc.MaxOpenConnections
		}
		if dc.MaxIdleConnections > 0 {
			cfg.MaxIdleConnections = dc.MaxIdleConnections
		}
		if dc.ConnectionMaxIdleTimeMins > 0 {
			cfg.ConnectionMaxIdleTime = time.Duration(dc.ConnectionMaxIdleTimeMins) * time.Minute
		}
		if dc.BusyTimeoutMs > 0 {
			cfg.BusyTimeoutMs = dc.BusyTimeoutMs
		}
		repository.SetConfig(cfg)
	}
	repository.Connect(config.Keys.DB)
	return nil
}

func handleDatabaseCommands() error {
	if flagMigrateDB {
		err := repository.MigrateDB(config.Keys.DB)
		if err != nil {
			return fmt.Errorf("migrating database to version %d: %w", repository.Version, err)
		}
		cclog.Exitf("MigrateDB Success: Migrated SQLite database at '%s' to version %d.\n",
			config.Keys.DB, repository.Version)
	}

	if flagRevertDB {
		err := repository.RevertDB(config.Keys.DB)
		if err != nil {
			return fmt.Errorf("reverting database to version %d: %w", repository.Version-1, err)
		}
		cclog.Exitf("RevertDB Success: Reverted SQLite database at '%s' to version %d.\n",
			config.Keys.DB, repository.Version-1)
	}

	if flagForceDB {
		err := repository.ForceDB(config.Keys.DB)
		if err != nil {
			return fmt.Errorf("forcing database to version %d: %w", repository.Version, err)
		}
		cclog.Exitf("ForceDB Success: Forced SQLite database at '%s' to version %d.\n",
			config.Keys.DB, repository.Version)
	}

	return nil
}

func handleUserCommands() error {
	if config.Keys.DisableAuthentication && (flagNewUser != "" || flagDelUser != "") {
		return fmt.Errorf("--add-user and --del-user can only be used if authentication is enabled")
	}

	// Always initialize the auth subsystem so the HTTP server and REST API have a
	// valid (non-nil) auth instance, even when authentication is disabled. With
	// authentication disabled, Init only sets up an ephemeral session store and
	// registers no authenticators (see auth.Init).
	if cfg := ccconf.GetPackageConfig("auth"); cfg != nil {
		auth.Init(&cfg)
	} else {
		if !config.Keys.DisableAuthentication {
			cclog.Warn("Authentication enabled but no auth configuration found")
		}
		auth.Init(nil)
	}

	if !config.Keys.DisableAuthentication {
		// Check for default security keys
		checkDefaultSecurityKeys()

		if flagNewUser != "" {
			if err := addUser(flagNewUser); err != nil {
				return err
			}
		}


Confirmed the architecture: `config.Init` only receives `ccconf.GetPackageConfig("main")`, so `EnableResampling` is read from `main.resampling`. The user's config.json has `resampling` at the **top level**, a sibling of `main` — so it's silently ignored and `config.Keys.EnableResampling == nil`. Let me confirm the downstream consequence: the cc-lib default `MinimumRequiredPoints` (which `config.Init` only overrides when `EnableResampling != nil`).


Bash

cd /Users/jan/prg/ClusterCockpit/cc-backend; R=$(find ~/go/pkg/mod/github.com/\!cluster\!cockpit -type d -name resampler 2>/dev/null | sort | tail -1); echo "RESAMPLER DIR: $R"; echo "=== MinimumRequiredPoints default + Set + validateFrequency ==="; grep -n "MinimumRequiredPoints\|func SetMinimumRequiredPoints\|func validateFrequency\|newFrequency <= oldFrequency\|lenData <" "$R"/resampler.go 2>&1 | head -30


RESAMPLER DIR: /Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.9.1/resampler
=== MinimumRequiredPoints default + Set + validateFrequency ===
32:// MinimumRequiredPoints is the default number of points required to trigger resampling.
34:var MinimumRequiredPoints int = 1000
99://   - newFrequency <= oldFrequency (no downsampling needed)
127:func validateFrequency(lenData int, oldFrequency, newFrequency int64) (int, int, error) {
129:	if oldFrequency == 0 || newFrequency == 0 || newFrequency <= oldFrequency {
142:	if (newDataLength == 0) || (lenData < MinimumRequiredPoints) || (newDataLength >= lenData) {
177://   - newFrequency <= oldFrequency (no downsampling needed)
281:func SetMinimumRequiredPoints(setVal int) {
282:	MinimumRequiredPoints = setVal


The root cause is now airtight. Let me confirm the go.mod version and check where the **example** config places the `resampling` block (to see if docs are misleading too).


cd /Users/jan/prg/ClusterCockpit/cc-backend; echo "=== go.mod cc-lib version ==="; grep "cc-lib" go.mod; echo; echo "=== resampling placement in example config(s) ==="; grep -rn "resampling\|\"main\"" configs/config.json docs/ 2>/dev/null | head; echo; echo "=== validateFrequency body ==="; R=$(find ~/go/pkg/mod/github.com/\!cluster\!cockpit -type d -name resampler 2>/dev/null | sort | tail -1); sed -n '127,146p' "$R"/resampler.go 2>/dev/null


=== go.mod cc-lib version ===
	github.com/ClusterCockpit/cc-lib/v2 v2.12.0

=== resampling placement in example config(s) ===
configs/config.json:2:  "main": {
configs/config.json:16:    "resampling": {

=== validateFrequency body ===
func validateFrequency(lenData int, oldFrequency, newFrequency int64) (int, int, error) {
	// Validate inputs and check if downsampling is needed
	if oldFrequency == 0 || newFrequency == 0 || newFrequency <= oldFrequency {
		return -1, 0, nil
	}

	// Ensure new frequency is a multiple of old frequency
	if newFrequency%oldFrequency != 0 {
		return -1, 0, fmt.Errorf("new sampling frequency (%d) must be a multiple of old frequency (%d)", newFrequency, oldFrequency)
	}

	step := int(newFrequency / oldFrequency)
	newDataLength := lenData / step

	// Don't downsample if result would be trivial or counterproductive
	if (newDataLength == 0) || (lenData < MinimumRequiredPoints) || (newDataLength >= lenData) {
		return -1, 0, nil
	}

	return newDataLength, step, nil


I do not see a difference in the frontend for long jobs with spiky metric data. It seems the average resampling has no effect. I tried to change resampling by config file and from the web frontend. Ca…


Let me confirm the actually-used v2.12.0 has the same default (the `find` picked v2.9.1 due to lexical sort).


cd /Users/jan/prg/ClusterCockpit/cc-backend; R=~/go/pkg/mod/github.com/\!cluster\!cockpit/cc-lib/v2@v2.12.0/resampler; echo "exists: $(ls -d $R 2>/dev/null)"; grep -n "MinimumRequiredPoints int =\|lenData < MinimumRequiredPoints" "$R"/resampler.go


exists: /Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/resampler
34:var MinimumRequiredPoints int = 1000
142:	if (newDataLength == 0) || (lenData < MinimumRequiredPoints) || (newDataLength >= lenData) {


I've found the root cause with certainty. Let me write up the plan and confirm scope with you.


Write

# Fix: resampling has no effect (job 409 and other archived jobs)

## Context

The user enabled resampling (`default-policy: low`, `default-algo: average`) and sees
no visible change in metric plots for long/spiky jobs (tested with job db id 409), neither
when configuring via `config.json` nor via the web frontend.

### Root cause (confirmed)

The `resampling` block in the user's `config.json` is placed at the **top level**, as a
sibling of `main`:

```json
{
  "main": { "addr": "127.0.0.1:8080" },
  ...
  "resampling": { "default-policy": "low", "default-algo": "average" }   // WRONG LEVEL
}
```

But the resampling config is a field of the **main** section:
- `internal/config/config.go:73` — `EnableResampling *ResampleConfig` has json tag `"resampling"` inside `ProgramConfig`.
- `cmd/cc-backend/main.go:94,99` — `config.Init` is only given `ccconf.GetPackageConfig("main")`.
- The example config places it correctly under `main`: `configs/config.json:2` (`"main"`) → `:16` (`"resampling"`).

Because it sits at the top level, `ccconf.GetPackageConfig("main")` never sees it, so
`config.Keys.EnableResampling == nil`. Top-level unknown keys are silently ignored (no
startup error). This causes **two** compounding failures:

1. **Default policy never applied.** In `internal/graph/schema.resolvers.go:512-519`
   (`JobMetrics`), the default-policy fallback is gated by `if config.Keys.EnableResampling != nil`.
   With it nil, an initial query (frontend now sends `resolution: null`) resolves to
   `resolution = 0` → no resampling.

2. **`MinimumRequiredPoints` stays at the cc-lib default of 1000.**
   `internal/config/config.go:174-180` only calls `resampler.SetMinimumRequiredPoints(...)`
   when `EnableResampling != nil`. The cc-lib default is `1000`
   (`cc-lib/v2@v2.12.0/resampler/resampler.go:34`), and `validateFrequency` returns "no
   resampling" when `lenData < MinimumRequiredPoints` (`resampler.go:142`).
   Job 409's series have **937 points** (937 < 1000), so resampling is skipped **even if a
   resolution is supplied** (e.g. via frontend zoom or a per-user policy preference). This is
   why changing the algorithm in the web frontend also had no effect.

### Verification data for job 409
- db id 409 → jobID 398864, cluster fritz, 1 node, completed, archived; duration ~56182s.
- Archive `var/job-archive/fritz/398/864/1675955241/data.json.gz`: timestep 60s, **937 points**
  per series, `statisticsSeries` **not** stored (so it is computed on demand after resampling).
- With config correctly under `main`: low policy → 200 target points → `ComputeResolution` = 300s,
  `SetMinimumRequiredPoints(200)`, 937 ≥ 200 → resample 937→~187 points with AVERAGE. Visible.

## Fix

Move the `resampling` object from the top level into the `main` section of the user's
`/Users/jan/prg/ClusterCockpit/cc-backend/config.json`:

```json
{
  "main": {
    "addr": "127.0.0.1:8080",
    "resampling": {
      "default-policy": "low",
      "default-algo": "average"
    }
  },
  "cron": { ... },
  ...
  // (top-level "resampling" removed)
}
```

No Go code change is required for the core fix.

### Optional safeguard (pending user choice)
Add a startup warning when unrecognized top-level keys appear in `config.json` (e.g. in
`cmd/cc-backend/main.go initConfiguration`), so a misplaced section like this is reported
instead of silently ignored.

## Verification
1. Restart `cc-backend` with the corrected config; confirm no startup warning/error.
2. Open job 409 in the web UI; node-scope metrics should now render ~187 points instead of 937.
3. Switch `default-algo` between `average` and `lttb` (or via the web frontend user setting
   `plotConfiguration_resampleAlgo`) and confirm the curve shape changes for spiky metrics
   (AVERAGE smooths peaks; LTTB preserves them).


File created successfully at: /Users/jan/.claude/plans/logical-puzzling-ritchie.md (file state is current in your context — no need to Read it back)

# Fix: resampling has no effect (job 409 and other archived jobs)

## Context

The user enabled resampling (`default-policy: low`, `default-algo: average`) and sees
no visible change in metric plots for long/spiky jobs (tested with job db id 409), neither
when configuring via `config.json` nor via the web frontend.

### Root cause (confirmed)

The `resampling` block in the user's `config.json` is placed at the **top level**, as a
sibling of `main`:

```json
{
  "main": { "addr": "127.0.0.1:8080" },
  ...
  "resampling": { "default-policy": "low", "default-algo": "average" }   // WRONG LEVEL
}
```

But the resampling config is a field of the **main** section:
- `internal/config/config.go:73` — `EnableResampling *ResampleConfig` has json tag `"resampling"` inside `ProgramConfig`.
- `cmd/cc-backend/main.go:94,99` — `config.Init` is only given `ccconf.GetPackageConfig("main")`.
- The example config places it correctly under `main`: `configs/config.json:2` (`"main"`) → `:16` (`"resampling"`).

Because it sits at the top level, `ccconf.GetPackageConfig("main")` never sees it, so
`config.Keys.EnableResampling == nil`. Top-level unknown keys are silently ignored (no
startup error). This causes **two** compounding failures:

1. **Default policy never applied.** In `internal/graph/schema.resolvers.go:512-519`
   (`JobMetrics`), the default-policy fallback is gated by `if config.Keys.EnableResampling != nil`.
   With it nil, an initial query (frontend now sends `resolution: null`) resolves to
   `resolution = 0` → no resampling.

2. **`MinimumRequiredPoints` stays at the cc-lib default of 1000.**
   `internal/config/config.go:174-180` only calls `resampler.SetMinimumRequiredPoints(...)`
   when `EnableResampling != nil`. The cc-lib default is `1000`
   (`cc-lib/v2@v2.12.0/resampler/resampler.go:34`), and `validateFrequency` returns "no
   resampling" when `lenData < MinimumRequiredPoints` (`resampler.go:142`).
   Job 409's series have **937 points** (937 < 1000), so resampling is skipped **even if a
   resolution is supplied** (e.g. via frontend zoom or a per-user policy preference). This is
   why changing the algorithm in the web frontend also had no effect.

### Verification data for job 409
- db id 409 → jobID 398864, cluster fritz, 1 node, completed, archived; duration ~56182s.
- Archive `var/job-archive/fritz/398/864/1675955241/data.json.gz`: timestep 60s, **937 points**
  per series, `statisticsSeries` **not** stored (so it is computed on demand after resampling).
- With config correctly under `main`: low policy → 200 target points → `ComputeResolution` = 300s,
  `SetMinimumRequiredPoints(200)`, 937 ≥ 200 → resample 937→~187 points with AVERAGE. Visible.

## Fix

Move the `resampling` object from the top level into the `main` section of the user's
`/Users/jan/prg/ClusterCockpit/cc-backend/config.json`:

```json
{
  "main": {
    "addr": "127.0.0.1:8080",
    "resampling": {
      "default-policy": "low",
      "default-algo": "average"
    }
  },
  "cron": { ... },
  ...
  // (top-level "resampling" removed)
}
```

No Go code change is required for the core fix.

### Optional safeguard (pending user choice)
Add a startup warning when unrecognized top-level keys appear in `config.json` (e.g. in
`cmd/cc-backend/main.go initConfiguration`), so a misplaced section like this is reported
instead of silently ignored.

## Verification
1. Restart `cc-backend` with the corrected config; confirm no startup warning/error.
2. Open job 409 in the web UI; node-scope metrics should now render ~187 points instead of 937.
3. Switch `default-algo` between `average` and `lttb` (or via the web frontend user setting
   `plotConfiguration_resampleAlgo`) and confirm the curve shape changes for spiky metrics
   (AVERAGE smooths peaks; LTTB preserves them).


AskUserQuestion

Question: The bug is that `resampling` sits at the top level of config.json instead of inside `main`, so it's silently ignored. How much should I fix?

Choices:
Move `resampling` into `main` in config.json AND add a startup warning when config.json has unrecognized top-level keys, so this footgun surfaces next time. Small Go change in main.go.
config.json: move resampling under main
+ main.go: warn on unknown top-level keys
  e.g. "ignoring unknown config section: resampling"
Just move the `resampling` block into the `main` section of config.json. Minimal, fixes the immediate problem, no code change.
config.json only:
  "main": {
    "addr": ...,
    "resampling": { ... }
  }


Your questions have been answered: "The bug is that `resampling` sits at the top level of config.json instead of inside `main`, so it's silently ignored. How much should I fix?"="Config fix + warning" selected preview:
config.json: move resampling under main
+ main.go: warn on unknown top-level keys
  e.g. "ignoring unknown config section: resampling". You can now continue with these answers in mind.

Question: The bug is that `resampling` sits at the top level of config.json instead of inside `main`, so it's silently ignored. How much should I fix?

Choices:
Move `resampling` into `main` in config.json AND add a startup warning when config.json has unrecognized top-level keys, so this footgun surfaces next time. Small Go change in main.go.
config.json: move resampling under main
+ main.go: warn on unknown top-level keys
  e.g. "ignoring unknown config section: resampling"
Just move the `resampling` block into the `main` section of config.json. Minimal, fixes the immediate problem, no code change.
config.json only:
  "main": {
    "addr": ...,
    "resampling": { ... }
  }


Good — config fix plus a startup warning. Let me check how `ccconf` loads and exposes the config so I can design the unknown-key warning correctly.


Bash

cd /Users/jan/prg/ClusterCockpit/cc-backend; C=~/go/pkg/mod/github.com/\!cluster\!cockpit/cc-lib/v2@v2.12.0/ccConfig; echo "DIR: $C"; ls "$C" 2>&1; echo "=== exported funcs ==="; grep -rn "^func \|GetPackageConfig\|func Init" "$C"/*.go 2>/dev/null | head -40


DIR: /Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig
config.go
config_test.go
README.md
testdata
=== exported funcs ===
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config.go:33:// and make it available via GetPackageConfig("sinks").
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config.go:55://	    rawConfig := ccconfig.GetPackageConfig("myapp")
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config.go:100:func Init(filename string) {
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config.go:139:// GetPackageConfig retrieves the raw JSON configuration for a given key.
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config.go:154://	rawConfig := ccconfig.GetPackageConfig("database")
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config.go:159:func GetPackageConfig(key string) json.RawMessage {
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config.go:175:func Reset() {
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config.go:192://	    config := ccconfig.GetPackageConfig("optional-feature")
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config.go:195:func HasKey(key string) bool {
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config.go:213:func GetKeys() []string {
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:23:func TestInit(t *testing.T) {
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:32:	rawConfig := GetPackageConfig("sinks")
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:41:	rawConfig = GetPackageConfig("main")
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:53:func TestInitAll(t *testing.T) {
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:62:	rawConfig := GetPackageConfig("sinks")
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:71:	rawConfig = GetPackageConfig("main")
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:82:// TestGetPackageConfigNonExistent tests retrieving a non-existent key
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:83:func TestGetPackageConfigNonExistent(t *testing.T) {
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:88:	rawConfig := GetPackageConfig("nonexistent")
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:95:func TestReset(t *testing.T) {
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:110:	// Verify GetPackageConfig returns nil after reset
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:111:	rawConfig := GetPackageConfig("main")
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:118:func TestResetAndReload(t *testing.T) {
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:123:	rawConfig1 := GetPackageConfig("main")
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:131:	rawConfig2 := GetPackageConfig("main")
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:147:func TestHasKey(t *testing.T) {
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:167:func TestGetKeys(t *testing.T) {
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:190:func TestGetKeysEmpty(t *testing.T) {
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:201:func TestEmptyConfig(t *testing.T) {
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:218:func TestConfigWithOnlyFileReferences(t *testing.T) {
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:241:func TestNonexistentConfigFile(t *testing.T) {
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:254:func TestMissingFileReference(t *testing.T) {
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:269:	rawConfig := GetPackageConfig("missing")
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:275:func TestMultipleInitCalls(t *testing.T) {
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:299:func TestFileReferenceResolution(t *testing.T) {
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:311:	actualSinks := GetPackageConfig("sinks")
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:324:func TestConfigKeyNames(t *testing.T) {
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:347:func TestInvalidJSONHandling(t *testing.T) {
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:357:// BenchmarkGetPackageConfig benchmarks the config retrieval
/Users/jan/go/pkg/mod/github.com/!cluster!cockpit/cc-lib/v2@v2.12.0/ccConfig/config_test.go:358:func BenchmarkGetPackageConfig(b *testing.B) {


`ccconf.GetKeys()` returns the top-level keys. Let me find every top-level section cc-backend actually consumes, so the warning's known-key set is accurate.


cd /Users/jan/prg/ClusterCockpit/cc-backend; echo "=== all GetPackageConfig keys used ==="; grep -rn "GetPackageConfig(" --include=*.go . | grep -v _test.go | sed -E 's/.*GetPackageConfig\(("[^"]+"|[^)]+)\).*/\1/' | sort -u; echo "=== raw call sites ==="; grep -rn "GetPackageConfig(" --include=*.go . | grep -v _test.go


=== all GetPackageConfig keys used ===
(eval):1: no matches found: --include=*.go
=== raw call sites ===
(eval):1: no matches found: --include=*.go


cd /Users/jan/prg/ClusterCockpit/cc-backend; grep -rn "GetPackageConfig(" cmd internal pkg web 2>/dev/null | grep -v _test.go


cmd/cc-backend/main.go:94:	cfg := ccconf.GetPackageConfig("main")
cmd/cc-backend/main.go:171:	if cfg := ccconf.GetPackageConfig("auth"); cfg != nil {
cmd/cc-backend/main.go:295:	natsConfig := ccconf.GetPackageConfig("nats")
cmd/cc-backend/main.go:302:	archiveCfg := ccconf.GetPackageConfig("archive")
cmd/cc-backend/main.go:355:	mscfg := ccconf.GetPackageConfig("metric-store")
cmd/cc-backend/main.go:372:	mscfg = ccconf.GetPackageConfig("metric-store-external")
cmd/cc-backend/main.go:389:	taskmanager.Start(ccconf.GetPackageConfig("cron"), ccconf.GetPackageConfig("archive"))
cmd/cc-backend/main.go:392:	cfg := ccconf.GetPackageConfig("ui")
cmd/cc-backend/main.go:554:		mscfg := ccconf.GetPackageConfig("metric-store")


I have everything needed. The known top-level config sections are: `main`, `auth`, `nats`, `archive`, `metric-store`, `metric-store-external`, `cron`, `ui`. Let me finalize the plan.


Edit

### Optional safeguard (pending user choice)
Add a startup warning when unrecognized top-level keys appear in `config.json` (e.g. in
`cmd/cc-backend/main.go initConfiguration`), so a misplaced section like this is reported
instead of silently ignored.

### Safeguard: warn on unknown top-level config sections

In `cmd/cc-backend/main.go` `initConfiguration()`, right after `ccconf.Init(flagConfigFile)`,
enumerate the present top-level keys via `ccconf.GetKeys()` and warn for any not in the known
set, so a misplaced/typo'd section is reported instead of silently ignored:

```go
knownSections := map[string]bool{
    "main": true, "auth": true, "nats": true, "archive": true,
    "metric-store": true, "metric-store-external": true, "cron": true, "ui": true,
}
for _, k := range ccconf.GetKeys() {
    if !knownSections[k] {
        cclog.Warnf("ignoring unrecognized top-level config section %q (check nesting in config file)", k)
    }
}
```

- Known sections are exactly the keys cc-backend reads via `ccconf.GetPackageConfig(...)`
  in `main.go` (`main`, `auth`, `nats`, `archive`, `metric-store`, `metric-store-external`,
  `cron`, `ui`).
- `cclog` is already imported in `main.go`; `ccconf.GetKeys()` returns the top-level keys.
- This is a warning only — it does not change behavior or fail startup.


The file /Users/jan/.claude/plans/logical-puzzling-ritchie.md has been updated successfully. (file state is current in your context — no need to Read it back)

### Safeguard: warn on unknown top-level config sections

In `cmd/cc-backend/main.go` `initConfiguration()`, right after `ccconf.Init(flagConfigFile)`,
enumerate the present top-level keys via `ccconf.GetKeys()` and warn for any not in the known
set, so a misplaced/typo'd section is reported instead of silently ignored:

```go
knownSections := map[string]bool{
    "main": true, "auth": true, "nats": true, "archive": true,
    "metric-store": true, "metric-store-external": true, "cron": true, "ui": true,
}
for _, k := range ccconf.GetKeys() {
    if !knownSections[k] {
        cclog.Warnf("ignoring unrecognized top-level config section %q (check nesting in config file)", k)
    }
}
```

- Known sections are exactly the keys cc-backend reads via `ccconf.GetPackageConfig(...)`
  in `main.go` (`main`, `auth`, `nats`, `archive`, `metric-store`, `metric-store-external`,
  `cron`, `ui`).
- `cclog` is already imported in `main.go`; `ccconf.GetKeys()` returns the top-level keys.
- This is a warning only — it does not change behavior or fail startup.

# Fix: resampling has no effect (job 409 and other archived jobs)

## Context

The user enabled resampling (`default-policy: low`, `default-algo: average`) and sees
no visible change in metric plots for long/spiky jobs (tested with job db id 409), neither
when configuring via `config.json` nor via the web frontend.

### Root cause (confirmed)

The `resampling` block in the user's `config.json` is placed at the **top level**, as a
sibling of `main`:

```json
{
  "main": { "addr": "127.0.0.1:8080" },
  ...
  "resampling": { "default-policy": "low", "default-algo": "average" }   // WRONG LEVEL
}
```

But the resampling config is a field of the **main** section:
- `internal/config/config.go:73` — `EnableResampling *ResampleConfig` has json tag `"resampling"` inside `ProgramConfig`.
- `cmd/cc-backend/main.go:94,99` — `config.Init` is only given `ccconf.GetPackageConfig("main")`.
- The example config places it correctly under `main`: `configs/config.json:2` (`"main"`) → `:16` (`"resampling"`).

Because it sits at the top level, `ccconf.GetPackageConfig("main")` never sees it, so
`config.Keys.EnableResampling == nil`. Top-level unknown keys are silently ignored (no
startup error). This causes **two** compounding failures:

1. **Default policy never applied.** In `internal/graph/schema.resolvers.go:512-519`
   (`JobMetrics`), the default-policy fallback is gated by `if config.Keys.EnableResampling != nil`.
   With it nil, an initial query (frontend now sends `resolution: null`) resolves to
   `resolution = 0` → no resampling.

2. **`MinimumRequiredPoints` stays at the cc-lib default of 1000.**
   `internal/config/config.go:174-180` only calls `resampler.SetMinimumRequiredPoints(...)`
   when `EnableResampling != nil`. The cc-lib default is `1000`
   (`cc-lib/v2@v2.12.0/resampler/resampler.go:34`), and `validateFrequency` returns "no
   resampling" when `lenData < MinimumRequiredPoints` (`resampler.go:142`).
   Job 409's series have **937 points** (937 < 1000), so resampling is skipped **even if a
   resolution is supplied** (e.g. via frontend zoom or a per-user policy preference). This is
   why changing the algorithm in the web frontend also had no effect.

### Verification data for job 409
- db id 409 → jobID 398864, cluster fritz, 1 node, completed, archived; duration ~56182s.
- Archive `var/job-archive/fritz/398/864/1675955241/data.json.gz`: timestep 60s, **937 points**
  per series, `statisticsSeries` **not** stored (so it is computed on demand after resampling).
- With config correctly under `main`: low policy → 200 target points → `ComputeResolution` = 300s,
  `SetMinimumRequiredPoints(200)`, 937 ≥ 200 → resample 937→~187 points with AVERAGE. Visible.

## Fix

Move the `resampling` object from the top level into the `main` section of the user's
`/Users/jan/prg/ClusterCockpit/cc-backend/config.json`:

```json
{
  "main": {
    "addr": "127.0.0.1:8080",
    "resampling": {
      "default-policy": "low",
      "default-algo": "average"
    }
  },
  "cron": { ... },
  ...
  // (top-level "resampling" removed)
}
```

No Go code change is required for the core fix.

### Optional safeguard (pending user choice)
Add a startup warning when unrecognized top-level keys appear in `config.json` (e.g. in
`cmd/cc-backend/main.go initConfiguration`), so a misplaced section like this is reported
instead of silently ignored.

## Verification
1. Restart `cc-backend` with the corrected config; confirm no startup warning/error.
2. Open job 409 in the web UI; node-scope metrics should now render ~187 points instead of 937.
3. Switch `default-algo` between `average` and `lttb` (or via the web frontend user setting
   `plotConfiguration_resampleAlgo`) and confirm the curve shape changes for spiky metrics
   (AVERAGE smooths peaks; LTTB preserves them).

-### Optional safeguard (pending user choice)

-Add a startup warning when unrecognized top-level keys appear in `config.json` (e.g. in

-`cmd/cc-backend/main.go initConfiguration`), so a misplaced section like this is reported

+### Safeguard: warn on unknown top-level config sections

+In `cmd/cc-backend/main.go` `initConfiguration()`, right after `ccconf.Init(flagConfigFile)`,

+enumerate the present top-level keys via `ccconf.GetKeys()` and warn for any not in the known

+set, so a misplaced/typo'd section is reported instead of silently ignored:

+    "main": true, "auth": true, "nats": true, "archive": true,

+    "metric-store": true, "metric-store-external": true, "cron": true, "ui": true,

+        cclog.Warnf("ignoring unrecognized top-level config section %q (check nesting in config file)", k)

+- Known sections are exactly the keys cc-backend reads via `ccconf.GetPackageConfig(...)`

+  in `main.go` (`main`, `auth`, `nats`, `archive`, `metric-store`, `metric-store-external`,

+- `cclog` is already imported in `main.go`; `ccconf.GetKeys()` returns the top-level keys.

+- This is a warning only — it does not change behavior or fail startup.


ToolSearch

Question: select:ExitPlanMode


Question: select:ExitPlanMode


ExitPlanMode

# Fix: resampling has no effect (job 409 and other archived jobs)

## Context

The user enabled resampling (`default-policy: low`, `default-algo: average`) and sees
no visible change in metric plots for long/spiky jobs (tested with job db id 409), neither
when configuring via `config.json` nor via the web frontend.

### Root cause (confirmed)

The `resampling` block in the user's `config.json` is placed at the **top level**, as a
sibling of `main`:

```json
{
  "main": { "addr": "127.0.0.1:8080" },
  ...
  "resampling": { "default-policy": "low", "default-algo": "average" }   // WRONG LEVEL
}
```

But the resampling config is a field of the **main** section:
- `internal/config/config.go:73` — `EnableResampling *ResampleConfig` has json tag `"resampling"` inside `ProgramConfig`.
- `cmd/cc-backend/main.go:94,99` — `config.Init` is only given `ccconf.GetPackageConfig("main")`.
- The example config places it correctly under `main`: `configs/config.json:2` (`"main"`) → `:16` (`"resampling"`).

Because it sits at the top level, `ccconf.GetPackageConfig("main")` never sees it, so
`config.Keys.EnableResampling == nil`. Top-level unknown keys are silently ignored (no
startup error). This causes **two** compounding failures:

1. **Default policy never applied.** In `internal/graph/schema.resolvers.go:512-519`
   (`JobMetrics`), the default-policy fallback is gated by `if config.Keys.EnableResampling != nil`.
   With it nil, an initial query (frontend now sends `resolution: null`) resolves to
   `resolution = 0` → no resampling.

2. **`MinimumRequiredPoints` stays at the cc-lib default of 1000.**
   `internal/config/config.go:174-180` only calls `resampler.SetMinimumRequiredPoints(...)`
   when `EnableResampling != nil`. The cc-lib default is `1000`
   (`cc-lib/v2@v2.12.0/resampler/resampler.go:34`), and `validateFrequency` returns "no
   resampling" when `lenData < MinimumRequiredPoints` (`resampler.go:142`).
   Job 409's series have **937 points** (937 < 1000), so resampling is skipped **even if a
   resolution is supplied** (e.g. via frontend zoom or a per-user policy preference). This is
   why changing the algorithm in the web frontend also had no effect.

### Verification data for job 409
- db id 409 → jobID 398864, cluster fritz, 1 node, completed, archived; duration ~56182s.
- Archive `var/job-archive/fritz/398/864/1675955241/data.json.gz`: timestep 60s, **937 points**
  per series, `statisticsSeries` **not** stored (so it is computed on demand after resampling).
- With config correctly under `main`: low policy → 200 target points → `ComputeResolution` = 300s,
  `SetMinimumRequiredPoints(200)`, 937 ≥ 200 → resample 937→~187 points with AVERAGE. Visible.

## Fix

Move the `resampling` object from the top level into the `main` section of the user's
`/Users/jan/prg/ClusterCockpit/cc-backend/config.json`:

```json
{
  "main": {
    "addr": "127.0.0.1:8080",
    "resampling": {
      "default-policy": "low",
      "default-algo": "average"
    }
  },
  "cron": { ... },
  ...
  // (top-level "resampling" removed)
}
```

No Go code change is required for the core fix.

### Safeguard: warn on unknown top-level config sections

In `cmd/cc-backend/main.go` `initConfiguration()`, right after `ccconf.Init(flagConfigFile)`,
enumerate the present top-level keys via `ccconf.GetKeys()` and warn for any not in the known
set, so a misplaced/typo'd section is reported instead of silently ignored:

```go
knownSections := map[string]bool{
    "main": true, "auth": true, "nats": true, "archive": true,
    "metric-store": true, "metric-store-external": true, "cron": true, "ui": true,
}
for _, k := range ccconf.GetKeys() {
    if !knownSections[k] {
        cclog.Warnf("ignoring unrecognized top-level config section %q (check nesting in config file)", k)
    }
}
```

- Known sections are exactly the keys cc-backend reads via `ccconf.GetPackageConfig(...)`
  in `main.go` (`main`, `auth`, `nats`, `archive`, `metric-store`, `metric-store-external`,
  `cron`, `ui`).
- `cclog` is already imported in `main.go`; `ccconf.GetKeys()` returns the top-level keys.
- This is a warning only — it does not change behavior or fail startup.

## Verification
1. Restart `cc-backend` with the corrected config; confirm no startup warning/error.
2. Open job 409 in the web UI; node-scope metrics should now render ~187 points instead of 937.
3. Switch `default-algo` between `average` and `lttb` (or via the web frontend user setting
   `plotConfiguration_resampleAlgo`) and confirm the curve shape changes for spiky metrics
   (AVERAGE smooths peaks; LTTB preserves them).


Error: The user doesn't want to proceed with this tool use. The tool use was rejected (eg. if it was a file edit, the new_string was NOT written to the file). To tell you how to proceed, the user said:
Can you check why setting the option from the frontend configuration also had no effect.


Good question — let me trace the frontend-settings path concretely to confirm exactly where it breaks.


236	          target: "rsp",
237	        })}
238	      >
239	        <CardTitle
240	          style="margin-bottom: 1em; display: flex; align-items: center;"
241	        >
242
Resample Policy

243	          {#if displayMessage && message.target == "rsp"}
244

245
246	                Update: {message.msg}
247
248

249	          {/if}
250	        </CardTitle>
251	        <input type="hidden" name="key" value="plotConfiguration_resamplePolicy" />
252

253	          {#each [["", "Default"], ["low", "Low"], ["medium", "Medium"], ["high", "High"]] as [val, label]}
254

255	              <input type="radio" id="rsp-{val || 'default'}" name="value" value={JSON.stringify(val)}
256	                checked={(!config?.plotConfiguration_resamplePolicy && val === "") || config?.plotConfiguration_resamplePolicy === val} />
257	              {label}
258

259	          {/each}
260

261	            Controls how many data points are shown in metric plots. Low = fast overview (~200 points), Medium = balanced (~500), High = maximum detail (~1000).
262

263

264	        <Button color="primary" type="submit">Submit</Button>
265	      </form>
266	    </Card>
267	  </Col>
268
269
270	  <Col>
271	    <Card class="h-100">
272	      <form
273	        id="resample-algo-form"
274	        method="post"
275	        action="/frontend/configuration/"
276	        class="card-body"
277	        onsubmit={(e) => updateSetting(e, {
278	          selector: "#resample-algo-form",
279	          target: "rsa",
280	        })}
281	      >
282	        <CardTitle
283	          style="margin-bottom: 1em; display: flex; align-items: center;"
284	        >
285
Resample Algorithm

286	          {#if displayMessage && message.target == "rsa"}
287

288
289	                Update: {message.msg}
290
291

292	          {/if}
293	        </CardTitle>
294	        <input type="hidden" name="key" value="plotConfiguration_resampleAlgo" />
295

296	          {#each [["", "Default"], ["lttb", "LTTB"], ["average", "Average"], ["simple", "Simple"]] as [val, label]}
297

298	              <input type="radio" id="rsa-{val || 'default'}" name="value" value={JSON.stringify(val)}
299	                checked={(!config?.plotConfiguration_resampleAlgo && val === "") || config?.plotConfiguration_resampleAlgo === val} />
300	              {label}
301

302	          {/each}
303

304	            Algorithm used when downsampling time-series data. LTTB preserves visual shape, Average smooths data, Simple picks every Nth point.
305

306

307	        <Button color="primary" type="submit">Submit</Button>
308	      </form>
309	    </Card>
310	  </Col>

target: "rsp",
        })}
      >
        <CardTitle
          style="margin-bottom: 1em; display: flex; align-items: center;"
        >

Resample Policy

          {#if displayMessage && message.target == "rsp"}

                Update: {message.msg}

          {/if}
        </CardTitle>
        <input type="hidden" name="key" value="plotConfiguration_resamplePolicy" />

          {#each [["", "Default"], ["low", "Low"], ["medium", "Medium"], ["high", "High"]] as [val, label]}

              <input type="radio" id="rsp-{val || 'default'}" name="value" value={JSON.stringify(val)}
                checked={(!config?.plotConfiguration_resamplePolicy && val === "") || config?.plotConfiguration_resamplePolicy === val} />
              {label}

          {/each}

            Controls how many data points are shown in metric plots. Low = fast overview (~200 points), Medium = balanced (~500), High = maximum detail (~1000).

        <Button color="primary" type="submit">Submit</Button>
      </form>
    </Card>
  </Col>

  <Col>
    <Card class="h-100">
      <form
        id="resample-algo-form"
        method="post"
        action="/frontend/configuration/"
        class="card-body"
        onsubmit={(e) => updateSetting(e, {
          selector: "#resample-algo-form",
          target: "rsa",
        })}
      >
        <CardTitle
          style="margin-bottom: 1em; display: flex; align-items: center;"
        >

Resample Algorithm

          {#if displayMessage && message.target == "rsa"}

                Update: {message.msg}

          {/if}
        </CardTitle>
        <input type="hidden" name="key" value="plotConfiguration_resampleAlgo" />

          {#each [["", "Default"], ["lttb", "LTTB"], ["average", "Average"], ["simple", "Simple"]] as [val, label]}

              <input type="radio" id="rsa-{val || 'default'}" name="value" value={JSON.stringify(val)}
                checked={(!config?.plotConfiguration_resampleAlgo && val === "") || config?.plotConfiguration_resampleAlgo === val} />
              {label}

          {/each}

            Algorithm used when downsampling time-series data. LTTB preserves visual shape, Average smooths data, Simple picks every Nth point.

        <Button color="primary" type="submit">Submit</Button>
      </form>
    </Card>
  </Col>


Let me confirm `SetMinimumRequiredPoints` is called nowhere else in cc-backend (so the misplaced config is the only thing that would lower the 1000 default).


Bash

cd /Users/jan/prg/ClusterCockpit/cc-backend; echo "=== SetMinimumRequiredPoints call sites in cc-backend ==="; grep -rn "SetMinimumRequiredPoints" cmd internal pkg 2>/dev/null; echo "=== config.go:174-181 ==="; sed -n '174,181p' internal/config/config.go


=== SetMinimumRequiredPoints call sites in cc-backend ===
internal/config/config.go:179:		resampler.SetMinimumRequiredPoints(targetPointsForPolicy(policy))
=== config.go:174-181 ===
	if Keys.EnableResampling != nil {
		policy := Keys.EnableResampling.DefaultPolicy
		if policy == "" {
			policy = "medium"
		}
		resampler.SetMinimumRequiredPoints(targetPointsForPolicy(policy))
	}
}


Confirmed. Here's the answer to your question.

## Why the frontend setting also had no effect

The frontend path is **not** gated by `EnableResampling` — so your UI choices *do* reach the backend, but they get defeated by the same root cause at the last step:

1. Setting **Resample Policy** and **Resample Algorithm** in the web UI saves user config keys `plotConfiguration_resamplePolicy` and `plotConfiguration_resampleAlgo` (`PlotRenderOptions.svelte:251,294`).

2. In the `JobMetrics` resolver, `resolveResolutionFromPolicy` reads `plotConfiguration_resamplePolicy` directly (no `EnableResampling` guard, `internal/graph/schema.resolvers.go:509-511`). With policy `low` and job 409 (duration 56182s, timestep 60s) it computes `resolution = 300`. `resolveResampleAlgo` returns `average`. So `LoadData(..., resolution=300, "average")` is called correctly.

3. `LoadData` calls `resampleFn(data[937], 60, 300)` → cc-lib `validateFrequency(937, 60, 300)`. The third gate is `lenData < MinimumRequiredPoints` (`resampler.go:142`). `MinimumRequiredPoints` is still the **cc-lib default of 1000** (`resampler.go:34`), and job 409's series have only **937 points**. So `937 < 1000` → it returns "skip" → the series is returned **unchanged**.

The threshold is only lowered by `resampler.SetMinimumRequiredPoints(...)`, which is called in exactly one place — `internal/config/config.go:179` — and **only** `if Keys.EnableResampling != nil`. Because your `resampling` block sits at the top level instead of inside `main`, `EnableResampling` is nil, so the threshold is never lowered.

**So both paths fail for the same reason.** The config-file path fails twice over (resolution defaults to 0 *and* threshold stays 1000); the frontend path correctly produces `resolution=300, algo=average` but is then blocked because the 937-point series is below the un-lowered 1000-point threshold. Moving `resampling` under `main` fixes both: `SetMinimumRequiredPoints(200)` runs, 937 ≥ 200, and resampling proceeds (~187 points) — and your frontend policy/algorithm choices take effect.

Let me record this in the plan.


Edit

### Why the web-frontend setting also had no effect

The frontend user settings (`plotConfiguration_resamplePolicy`, `plotConfiguration_resampleAlgo`
in `web/frontend/src/config/user/PlotRenderOptions.svelte:251,294`) are read by the resolver
**without** an `EnableResampling` guard:
- `resolveResolutionFromPolicy` (`schema.resolvers.go:509-511`) reads the user's policy and
  computes `resolution = 300` for job 409 with policy `low`.
- `resolveResampleAlgo` returns the user's `average`.

So `LoadData(..., resolution=300, "average")` is called correctly. But the resampler then skips:
`validateFrequency(937, 60, 300)` hits `lenData(937) < MinimumRequiredPoints` and returns "no
resampling" because `MinimumRequiredPoints` is still the cc-lib default **1000**
(`resampler.go:34,142`). `resampler.SetMinimumRequiredPoints` is only called at
`internal/config/config.go:179`, gated by `if Keys.EnableResampling != nil` — which is nil due
to the misplaced config. Net effect: frontend choices propagate but are blocked at the last
step. Moving the config under `main` lowers the threshold to 200, so 937 ≥ 200 → resampling
runs and frontend choices take effect.

### Verification data for job 409


### Why the web-frontend setting also had no effect

The frontend user settings (`plotConfiguration_resamplePolicy`, `plotConfiguration_resampleAlgo`
in `web/frontend/src/config/user/PlotRenderOptions.svelte:251,294`) are read by the resolver
**without** an `EnableResampling` guard:
- `resolveResolutionFromPolicy` (`schema.resolvers.go:509-511`) reads the user's policy and
  computes `resolution = 300` for job 409 with policy `low`.
- `resolveResampleAlgo` returns the user's `average`.

So `LoadData(..., resolution=300, "average")` is called correctly. But the resampler then skips:
`validateFrequency(937, 60, 300)` hits `lenData(937) < MinimumRequiredPoints` and returns "no
resampling" because `MinimumRequiredPoints` is still the cc-lib default **1000**
(`resampler.go:34,142`). `resampler.SetMinimumRequiredPoints` is only called at
`internal/config/config.go:179`, gated by `if Keys.EnableResampling != nil` — which is nil due
to the misplaced config. Net effect: frontend choices propagate but are blocked at the last
step. Moving the config under `main` lowers the threshold to 200, so 937 ≥ 200 → resampling
runs and frontend choices take effect.

### Verification data for job 409

# Fix: resampling has no effect (job 409 and other archived jobs)

## Context

The user enabled resampling (`default-policy: low`, `default-algo: average`) and sees
no visible change in metric plots for long/spiky jobs (tested with job db id 409), neither
when configuring via `config.json` nor via the web frontend.

### Root cause (confirmed)

The `resampling` block in the user's `config.json` is placed at the **top level**, as a
sibling of `main`:

```json
{
  "main": { "addr": "127.0.0.1:8080" },
  ...
  "resampling": { "default-policy": "low", "default-algo": "average" }   // WRONG LEVEL
}
```

But the resampling config is a field of the **main** section:
- `internal/config/config.go:73` — `EnableResampling *ResampleConfig` has json tag `"resampling"` inside `ProgramConfig`.
- `cmd/cc-backend/main.go:94,99` — `config.Init` is only given `ccconf.GetPackageConfig("main")`.
- The example config places it correctly under `main`: `configs/config.json:2` (`"main"`) → `:16` (`"resampling"`).

Because it sits at the top level, `ccconf.GetPackageConfig("main")` never sees it, so
`config.Keys.EnableResampling == nil`. Top-level unknown keys are silently ignored (no
startup error). This causes **two** compounding failures:

1. **Default policy never applied.** In `internal/graph/schema.resolvers.go:512-519`
   (`JobMetrics`), the default-policy fallback is gated by `if config.Keys.EnableResampling != nil`.
   With it nil, an initial query (frontend now sends `resolution: null`) resolves to
   `resolution = 0` → no resampling.

2. **`MinimumRequiredPoints` stays at the cc-lib default of 1000.**
   `internal/config/config.go:174-180` only calls `resampler.SetMinimumRequiredPoints(...)`
   when `EnableResampling != nil`. The cc-lib default is `1000`
   (`cc-lib/v2@v2.12.0/resampler/resampler.go:34`), and `validateFrequency` returns "no
   resampling" when `lenData < MinimumRequiredPoints` (`resampler.go:142`).
   Job 409's series have **937 points** (937 < 1000), so resampling is skipped **even if a
   resolution is supplied** (e.g. via frontend zoom or a per-user policy preference). This is
   why changing the algorithm in the web frontend also had no effect.

### Verification data for job 409
- db id 409 → jobID 398864, cluster fritz, 1 node, completed, archived; duration ~56182s.
- Archive `var/job-archive/fritz/398/864/1675955241/data.json.gz`: timestep 60s, **937 points**
  per series, `statisticsSeries` **not** stored (so it is computed on demand after resampling).
- With config correctly under `main`: low policy → 200 target points → `ComputeResolution` = 300s,
  `SetMinimumRequiredPoints(200)`, 937 ≥ 200 → resample 937→~187 points with AVERAGE. Visible.

## Fix

Move the `resampling` object from the top level into the `main` section of the user's
`/Users/jan/prg/ClusterCockpit/cc-backend/config.json`:

```json
{
  "main": {
    "addr": "127.0.0.1:8080",
    "resampling": {
      "default-policy": "low",
      "default-algo": "average"
    }
  },
  "cron": { ... },
  ...
  // (top-level "resampling" removed)
}
```

No Go code change is required for the core fix.

### Safeguard: warn on unknown top-level config sections

In `cmd/cc-backend/main.go` `initConfiguration()`, right after `ccconf.Init(flagConfigFile)`,
enumerate the present top-level keys via `ccconf.GetKeys()` and warn for any not in the known
set, so a misplaced/typo'd section is reported instead of silently ignored:

```go
knownSections := map[string]bool{
    "main": true, "auth": true, "nats": true, "archive": true,
    "metric-store": true, "metric-store-external": true, "cron": true, "ui": true,
}
for _, k := range ccconf.GetKeys() {
    if !knownSections[k] {
        cclog.Warnf("ignoring unrecognized top-level config section %q (check nesting in config file)", k)
    }
}
```

- Known sections are exactly the keys cc-backend reads via `ccconf.GetPackageConfig(...)`
  in `main.go` (`main`, `auth`, `nats`, `archive`, `metric-store`, `metric-store-external`,
  `cron`, `ui`).
- `cclog` is already imported in `main.go`; `ccconf.GetKeys()` returns the top-level keys.
- This is a warning only — it does not change behavior or fail startup.

## Verification
1. Restart `cc-backend` with the corrected config; confirm no startup warning/error.
2. Open job 409 in the web UI; node-scope metrics should now render ~187 points instead of 937.
3. Switch `default-algo` between `average` and `lttb` (or via the web frontend user setting
   `plotConfiguration_resampleAlgo`) and confirm the curve shape changes for spiky metrics
   (AVERAGE smooths peaks; LTTB preserves them).

+### Why the web-frontend setting also had no effect

+The frontend user settings (`plotConfiguration_resamplePolicy`, `plotConfiguration_resampleAlgo`

+in `web/frontend/src/config/user/PlotRenderOptions.svelte:251,294`) are read by the resolver

+**without** an `EnableResampling` guard:

+- `resolveResolutionFromPolicy` (`schema.resolvers.go:509-511`) reads the user's policy and

+  computes `resolution = 300` for job 409 with policy `low`.

+- `resolveResampleAlgo` returns the user's `average`.

+So `LoadData(..., resolution=300, "average")` is called correctly. But the resampler then skips:

+`validateFrequency(937, 60, 300)` hits `lenData(937) < MinimumRequiredPoints` and returns "no

+resampling" because `MinimumRequiredPoints` is still the cc-lib default **1000**

+(`resampler.go:34,142`). `resampler.SetMinimumRequiredPoints` is only called at

+`internal/config/config.go:179`, gated by `if Keys.EnableResampling != nil` — which is nil due

+to the misplaced config. Net effect: frontend choices propagate but are blocked at the last

+step. Moving the config under `main` lowers the threshold to 200, so 937 ≥ 200 → resampling


ExitPlanMode

# Fix: resampling has no effect (job 409 and other archived jobs)

## Context

The user enabled resampling (`default-policy: low`, `default-algo: average`) and sees
no visible change in metric plots for long/spiky jobs (tested with job db id 409), neither
when configuring via `config.json` nor via the web frontend.

### Root cause (confirmed)

The `resampling` block in the user's `config.json` is placed at the **top level**, as a
sibling of `main`:

```json
{
  "main": { "addr": "127.0.0.1:8080" },
  ...
  "resampling": { "default-policy": "low", "default-algo": "average" }   // WRONG LEVEL
}
```

But the resampling config is a field of the **main** section:
- `internal/config/config.go:73` — `EnableResampling *ResampleConfig` has json tag `"resampling"` inside `ProgramConfig`.
- `cmd/cc-backend/main.go:94,99` — `config.Init` is only given `ccconf.GetPackageConfig("main")`.
- The example config places it correctly under `main`: `configs/config.json:2` (`"main"`) → `:16` (`"resampling"`).

Because it sits at the top level, `ccconf.GetPackageConfig("main")` never sees it, so
`config.Keys.EnableResampling == nil`. Top-level unknown keys are silently ignored (no
startup error). This causes **two** compounding failures:

1. **Default policy never applied.** In `internal/graph/schema.resolvers.go:512-519`
   (`JobMetrics`), the default-policy fallback is gated by `if config.Keys.EnableResampling != nil`.
   With it nil, an initial query (frontend now sends `resolution: null`) resolves to
   `resolution = 0` → no resampling.

2. **`MinimumRequiredPoints` stays at the cc-lib default of 1000.**
   `internal/config/config.go:174-180` only calls `resampler.SetMinimumRequiredPoints(...)`
   when `EnableResampling != nil`. The cc-lib default is `1000`
   (`cc-lib/v2@v2.12.0/resampler/resampler.go:34`), and `validateFrequency` returns "no
   resampling" when `lenData < MinimumRequiredPoints` (`resampler.go:142`).
   Job 409's series have **937 points** (937 < 1000), so resampling is skipped **even if a
   resolution is supplied** (e.g. via frontend zoom or a per-user policy preference). This is
   why changing the algorithm in the web frontend also had no effect.

### Why the web-frontend setting also had no effect

The frontend user settings (`plotConfiguration_resamplePolicy`, `plotConfiguration_resampleAlgo`
in `web/frontend/src/config/user/PlotRenderOptions.svelte:251,294`) are read by the resolver
**without** an `EnableResampling` guard:
- `resolveResolutionFromPolicy` (`schema.resolvers.go:509-511`) reads the user's policy and
  computes `resolution = 300` for job 409 with policy `low`.
- `resolveResampleAlgo` returns the user's `average`.

So `LoadData(..., resolution=300, "average")` is called correctly. But the resampler then skips:
`validateFrequency(937, 60, 300)` hits `lenData(937) < MinimumRequiredPoints` and returns "no
resampling" because `MinimumRequiredPoints` is still the cc-lib default **1000**
(`resampler.go:34,142`). `resampler.SetMinimumRequiredPoints` is only called at
`internal/config/config.go:179`, gated by `if Keys.EnableResampling != nil` — which is nil due
to the misplaced config. Net effect: frontend choices propagate but are blocked at the last
step. Moving the config under `main` lowers the threshold to 200, so 937 ≥ 200 → resampling
runs and frontend choices take effect.

### Verification data for job 409
- db id 409 → jobID 398864, cluster fritz, 1 node, completed, archived; duration ~56182s.
- Archive `var/job-archive/fritz/398/864/1675955241/data.json.gz`: timestep 60s, **937 points**
  per series, `statisticsSeries` **not** stored (so it is computed on demand after resampling).
- With config correctly under `main`: low policy → 200 target points → `ComputeResolution` = 300s,
  `SetMinimumRequiredPoints(200)`, 937 ≥ 200 → resample 937→~187 points with AVERAGE. Visible.

## Fix

Move the `resampling` object from the top level into the `main` section of the user's
`/Users/jan/prg/ClusterCockpit/cc-backend/config.json`:

```json
{
  "main": {
    "addr": "127.0.0.1:8080",
    "resampling": {
      "default-policy": "low",
      "default-algo": "average"
    }
  },
  "cron": { ... },
  ...
  // (top-level "resampling" removed)
}
```

No Go code change is required for the core fix.

### Safeguard: warn on unknown top-level config sections

In `cmd/cc-backend/main.go` `initConfiguration()`, right after `ccconf.Init(flagConfigFile)`,
enumerate the present top-level keys via `ccconf.GetKeys()` and warn for any not in the known
set, so a misplaced/typo'd section is reported instead of silently ignored:

```go
knownSections := map[string]bool{
    "main": true, "auth": true, "nats": true, "archive": true,
    "metric-store": true, "metric-store-external": true, "cron": true, "ui": true,
}
for _, k := range ccconf.GetKeys() {
    if !knownSections[k] {
        cclog.Warnf("ignoring unrecognized top-level config section %q (check nesting in config file)", k)
    }
}
```

- Known sections are exactly the keys cc-backend reads via `ccconf.GetPackageConfig(...)`
  in `main.go` (`main`, `auth`, `nats`, `archive`, `metric-store`, `metric-store-external`,
  `cron`, `ui`).
- `cclog` is already imported in `main.go`; `ccconf.GetKeys()` returns the top-level keys.
- This is a warning only — it does not change behavior or fail startup.

## Verification
1. Restart `cc-backend` with the corrected config; confirm no startup warning/error.
2. Open job 409 in the web UI; node-scope metrics should now render ~187 points instead of 937.
3. Switch `default-algo` between `average` and `lttb` (or via the web frontend user setting
   `plotConfiguration_resampleAlgo`) and confirm the curve shape changes for spiky metrics
   (AVERAGE smooths peaks; LTTB preserves them).


User has approved your plan. You can now start coding. Start with updating your todo list if applicable

Your plan has been saved to: /Users/jan/.claude/plans/logical-puzzling-ritchie.md
You can refer back to it if needed during implementation.

## Approved Plan:
# Fix: resampling has no effect (job 409 and other archived jobs)

## Context

The user enabled resampling (`default-policy: low`, `default-algo: average`) and sees
no visible change in metric plots for long/spiky jobs (tested with job db id 409), neither
when configuring via `config.json` nor via the web frontend.

### Root cause (confirmed)

The `resampling` block in the user's `config.json` is placed at the **top level**, as a
sibling of `main`:

```json
{
  "main": { "addr": "127.0.0.1:8080" },
  ...
  "resampling": { "default-policy": "low", "default-algo": "average" }   // WRONG LEVEL
}
```

But the resampling config is a field of the **main** section:
- `internal/config/config.go:73` — `EnableResampling *ResampleConfig` has json tag `"resampling"` inside `ProgramConfig`.
- `cmd/cc-backend/main.go:94,99` — `config.Init` is only given `ccconf.GetPackageConfig("main")`.
- The example config places it correctly under `main`: `configs/config.json:2` (`"main"`) → `:16` (`"resampling"`).

Because it sits at the top level, `ccconf.GetPackageConfig("main")` never sees it, so
`config.Keys.EnableResampling == nil`. Top-level unknown keys are silently ignored (no
startup error). This causes **two** compounding failures:

1. **Default policy never applied.** In `internal/graph/schema.resolvers.go:512-519`
   (`JobMetrics`), the default-policy fallback is gated by `if config.Keys.EnableResampling != nil`.
   With it nil, an initial query (frontend now sends `resolution: null`) resolves to
   `resolution = 0` → no resampling.

2. **`MinimumRequiredPoints` stays at the cc-lib default of 1000.**
   `internal/config/config.go:174-180` only calls `resampler.SetMinimumRequiredPoints(...)`
   when `EnableResampling != nil`. The cc-lib default is `1000`
   (`cc-lib/v2@v2.12.0/resampler/resampler.go:34`), and `validateFrequency` returns "no
   resampling" when `lenData < MinimumRequiredPoints` (`resampler.go:142`).
   Job 409's series have **937 points** (937 < 1000), so resampling is skipped **even if a
   resolution is supplied** (e.g. via frontend zoom or a per-user policy preference). This is
   why changing the algorithm in the web frontend also had no effect.

### Why the web-frontend setting also had no effect

The frontend user settings (`plotConfiguration_resamplePolicy`, `plotConfiguration_resampleAlgo`
in `web/frontend/src/config/user/PlotRenderOptions.svelte:251,294`) are read by the resolver
**without** an `EnableResampling` guard:
- `resolveResolutionFromPolicy` (`schema.resolvers.go:509-511`) reads the user's policy and
  computes `resolution = 300` for job 409 with policy `low`.
- `resolveResampleAlgo` returns the user's `average`.

So `LoadData(..., resolution=300, "average")` is called correctly. But the resampler then skips:
`validateFrequency(937, 60, 300)` hits `lenData(937) < MinimumRequiredPoints` and returns "no
resampling" because `MinimumRequiredPoints` is still the cc-lib default **1000**
(`resampler.go:34,142`). `resampler.SetMinimumRequiredPoints` is only called at
`internal/config/config.go:179`, gated by `if Keys.EnableResampling != nil` — which is nil due
to the misplaced config. Net effect: frontend choices propagate but are blocked at the last
step. Moving the config under `main` lowers the threshold to 200, so 937 ≥ 200 → resampling
runs and frontend choices take effect.

### Verification data for job 409
- db id 409 → jobID 398864, cluster fritz, 1 node, completed, archived; duration ~56182s.
- Archive `var/job-archive/fritz/398/864/1675955241/data.json.gz`: timestep 60s, **937 points**
  per series, `statisticsSeries` **not** stored (so it is computed on demand after resampling).
- With config correctly under `main`: low policy → 200 target points → `ComputeResolution` = 300s,
  `SetMinimumRequiredPoints(200)`, 937 ≥ 200 → resample 937→~187 points with AVERAGE. Visible.

## Fix

Move the `resampling` object from the top level into the `main` section of the user's
`/Users/jan/prg/ClusterCockpit/cc-backend/config.json`:

```json
{
  "main": {
    "addr": "127.0.0.1:8080",
    "resampling": {
      "default-policy": "low",
      "default-algo": "average"
    }
  },
  "cron": { ... },
  ...
  // (top-level "resampling" removed)
}
```

No Go code change is required for the core fix.

### Safeguard: warn on unknown top-level config sections

In `cmd/cc-backend/main.go` `initConfiguration()`, right after `ccconf.Init(flagConfigFile)`,
enumerate the present top-level keys via `ccconf.GetKeys()` and warn for any not in the known
set, so a misplaced/typo'd section is reported instead of silently ignored:

```go
knownSections := map[string]bool{
    "main": true, "auth": true, "nats": true, "archive": true,
    "metric-store": true, "metric-store-external": true, "cron": true, "ui": true,
}
for _, k := range ccconf.GetKeys() {
    if !knownSections[k] {
        cclog.Warnf("ignoring unrecognized top-level config section %q (check nesting in config file)", k)
    }
}
```

- Known sections are exactly the keys cc-backend reads via `ccconf.GetPackageConfig(...)`
  in `main.go` (`main`, `auth`, `nats`, `archive`, `metric-store`, `metric-store-external`,
  `cron`, `ui`).
- `cclog` is already imported in `main.go`; `ccconf.GetKeys()` returns the top-level keys.
- This is a warning only — it does not change behavior or fail startup.

## Verification
1. Restart `cc-backend` with the corrected config; confirm no startup warning/error.
2. Open job 409 in the web UI; node-scope metrics should now render ~187 points instead of 937.
3. Switch `default-algo` between `average` and `lttb` (or via the web frontend user setting
   `plotConfiguration_resampleAlgo`) and confirm the curve shape changes for spiky metrics
   (AVERAGE smooths peaks; LTTB preserves them).


Now let me implement. First, fix the config.json (move `resampling` into `main`):


Edit

  "main": {
    "addr": "127.0.0.1:8080",
    "resampling": {
      "default-policy": "low",
      "default-algo": "average"
    }
  },


The file /Users/jan/prg/ClusterCockpit/cc-backend/config.json has been updated successfully. (file state is current in your context — no need to Read it back)

  "main": {
    "addr": "127.0.0.1:8080",
    "resampling": {
      "default-policy": "low",
      "default-algo": "average"
    }
  },


  "resampling": {
    "default-policy": "low",
    "default-algo": "average"
  },
  "metric-store": {


  "resampling": {
    "default-policy": "low",
    "default-algo": "average"
  },
  "metric-store": {

"token": "REDACTED"
}
],
-  "resampling": {
-    "default-policy": "low",
-    "default-algo": "average"
-  },
"metric-store": {
"retention-in-memory": "24h",
"memory-cap": 100


Now the safeguard. Let me check the `ccconf` import alias and `GetKeys` signature in main.go:


Bash

cd /Users/jan/prg/ClusterCockpit/cc-backend; grep -n "ccConfig\|ccconf\|cclog\|ccLogger" cmd/cc-backend/main.go | head; echo "=== GetKeys signature ==="; sed -n '213,225p' ~/go/pkg/mod/github.com/\!cluster\!cockpit/cc-lib/v2@v2.12.0/ccConfig/config.go


35:	ccconf "github.com/ClusterCockpit/cc-lib/v2/ccConfig"
36:	cclog "github.com/ClusterCockpit/cc-lib/v2/ccLogger"
92:	ccconf.Init(flagConfigFile)
94:	cfg := ccconf.GetPackageConfig("main")
137:		cclog.Exitf("MigrateDB Success: Migrated SQLite database at '%s' to version %d.\n",
146:		cclog.Exitf("RevertDB Success: Reverted SQLite database at '%s' to version %d.\n",
155:		cclog.Exitf("ForceDB Success: Forced SQLite database at '%s' to version %d.\n",
171:	if cfg := ccconf.GetPackageConfig("auth"); cfg != nil {
175:			cclog.Warn("Authentication enabled but no auth configuration found")
227:		cclog.Warn("Using default JWT keys - not recommended for production environments")
=== GetKeys signature ===
func GetKeys() []string {
	result := make([]string, 0, len(keys))
	for k := range keys {
		result = append(result, k)
	}
	return result
}


Now add the safeguard in `initConfiguration`:


Edit

func initConfiguration() error {
	ccconf.Init(flagConfigFile)

	cfg := ccconf.GetPackageConfig("main")
	if cfg == nil {
		return fmt.Errorf("main configuration must be present")
	}

func initConfiguration() error {
	ccconf.Init(flagConfigFile)

	// Warn about unrecognized top-level config sections. A common mistake is
	// nesting a setting at the wrong level (e.g. placing "resampling" next to
	// "main" instead of inside it), which is otherwise silently ignored.
	knownSections := map[string]bool{
		"main": true, "auth": true, "nats": true, "archive": true,
		"metric-store": true, "metric-store-external": true, "cron": true, "ui": true,
	}
	for _, k := range ccconf.GetKeys() {
		if !knownSections[k] {
			cclog.Warnf("ignoring unrecognized top-level config section %q (check nesting in config file)", k)
		}
	}

	cfg := ccconf.GetPackageConfig("main")
	if cfg == nil {
		return fmt.Errorf("main configuration must be present")
	}


The file /Users/jan/prg/ClusterCockpit/cc-backend/cmd/cc-backend/main.go has been updated successfully. (file state is current in your context — no need to Read it back)

func initConfiguration() error {
	ccconf.Init(flagConfigFile)

	cfg := ccconf.GetPackageConfig("main")
	if cfg == nil {
		return fmt.Errorf("main configuration must be present")
	}

func initConfiguration() error {
	ccconf.Init(flagConfigFile)

	// Warn about unrecognized top-level config sections. A common mistake is
	// nesting a setting at the wrong level (e.g. placing "resampling" next to
	// "main" instead of inside it), which is otherwise silently ignored.
	knownSections := map[string]bool{
		"main": true, "auth": true, "nats": true, "archive": true,
		"metric-store": true, "metric-store-external": true, "cron": true, "ui": true,
	}
	for _, k := range ccconf.GetKeys() {
		if !knownSections[k] {
			cclog.Warnf("ignoring unrecognized top-level config section %q (check nesting in config file)", k)
		}
	}

	cfg := ccconf.GetPackageConfig("main")
	if cfg == nil {
		return fmt.Errorf("main configuration must be present")
	}

+  // Warn about unrecognized top-level config sections. A common mistake is

+  // nesting a setting at the wrong level (e.g. placing "resampling" next to

+  // "main" instead of inside it), which is otherwise silently ignored.

+    "main": true, "auth": true, "nats": true, "archive": true,

+    "metric-store": true, "metric-store-external": true, "cron": true, "ui": true,

+      cclog.Warnf("ignoring unrecognized top-level config section %q (check nesting in config file)", k)


Now let me verify the config.json is valid JSON and the Go code compiles:


Bash

cd /Users/jan/prg/ClusterCockpit/cc-backend; echo "=== config.json validity ==="; python3 -m json.tool config.json > /dev/null && echo "valid JSON"; echo "=== go build cmd ==="; go build ./cmd/cc-backend/ 2>&1 | head; echo "exit: $?"


=== config.json validity ===
valid JSON
=== go build cmd ===
exit: 0


Both build cleanly and the config is valid JSON. Let me confirm the final config structure:


1	{
2	  "main": {
3	    "addr": "127.0.0.1:8080",
4	    "resampling": {
5	      "default-policy": "low",
6	      "default-algo": "average"
7	    }
8	  },
9	  "cron": {
10	    "commit-job-worker": "1m",
11	    "duration-worker": "3m",
12	    "footprint-worker": "5m"
13	  },
14	  "auth": {
15	    "jwts": {
16	      "max-age": "2000h"
17	    }
18	  },
19	  "metric-store-external": [
20	    {
21	      "scope": "fritz",
22	      "url": "http://0.0.0.0:8082",
23	      "token": "REDACTED"
24	    }
25	  ],
26	  "metric-store": {
27	    "retention-in-memory": "24h",
28	    "memory-cap": 100
29	  }
30	}
31


Done. Both changes are in place and verified.

## Summary

**Root cause:** Your `resampling` block was at the **top level** of `config.json`, but it's a field of the `main` section (`ProgramConfig.EnableResampling`, json `"resampling"`, read only from `ccconf.GetPackageConfig("main")`). So it was silently ignored, leaving `config.Keys.EnableResampling == nil`. That broke resampling two ways:
1. The default-policy fallback in the `JobMetrics` resolver is gated on `EnableResampling != nil` → initial resolution stayed `0`.
2. `resampler.SetMinimumRequiredPoints(...)` (the only call site, `config.go:179`) is also gated on it → the cc-lib threshold stayed at its default **1000**. Job 409's series have **937 points** (< 1000), so the resampler skipped downsampling **even when** the frontend correctly computed `resolution=300, algo=average`. That's why the web-frontend setting also had no effect.

**Changes made:**
1. **`config.json`** — moved the `resampling` block inside `main`. Now `SetMinimumRequiredPoints(200)` runs (from `default-policy: low`), 937 ≥ 200, and resampling proceeds (~187 points). Frontend policy/algorithm choices now take effect too.
2. **`cmd/cc-backend/main.go`** — added a startup warning in `initConfiguration()` that flags any unrecognized top-level config section (against the known set: `main`, `auth`, `nats`, `archive`, `metric-store`, `metric-store-external`, `cron`, `ui`), so this misnesting footgun surfaces instead of being silently ignored.

Both compile; `config.json` is valid JSON.

**To verify end-to-end:** restart `cc-backend`, open job 409 — node-scope metrics should render ~187 points instead of 937, and switching `default-algo` between `average` and `lttb` should visibly change spiky curves (average smooths peaks, LTTB preserves them).

One note: the earlier Svelte frontend fixes from the previous task plus this `main.go` change mean you'll want to rebuild (`make` / `make frontend`) before testing. Want me to run the build?


Goal: make metric resampling actually take effect in the frontend. Fixed the misplaced `resampling` config and added a startup warning; both build cleanly. Next: rebuild with `make`, then restart cc-backend and verify job 409 resamples. (disable recaps in /config)


Commit the changes in 3 commits: One with the toplevel config warning, one with the frontend fixes, and one about the dependency updates


Let me look at the current git status to see all the changes that need to be split into commits.


cd /Users/jan/prg/ClusterCockpit/cc-backend; git status; echo "=== branch ==="; git branch --show-current


On branch feature/526-average-resample
Your branch is up to date with 'origin/feature/526-average-resample'.

Changes to be committed:
  (use "git restore --staged <file>..." to unstage)
	modified:   cmd/cc-backend/main.go

Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git restore <file>..." to discard changes in working directory)
	modified:   go.mod
	modified:   go.sum
	modified:   web/frontend/src/Systems.root.svelte
	modified:   web/frontend/src/config/admin/Options.svelte
	modified:   web/frontend/src/generic/joblist/JobListRow.svelte
	modified:   web/frontend/src/job/Metric.svelte

=== branch ===
feature/526-average-resample


There are also `go.mod`/`go.sum` changes (dependency updates) already in the working tree. Note `config.json` isn't tracked (gitignored), so my local config change won't be committed — correct. Let me inspect the dependency diff for an accurate message.


cd /Users/jan/prg/ClusterCockpit/cc-backend; git diff go.mod; echo "=== are build artifacts tracked? ==="; git check-ignore web/frontend/public/build/jobs.js 2>&1 || echo "NOT ignored"


diff --git a/go.mod b/go.mod
index b3dc1a12..057f2d73 100644
--- a/go.mod
+++ b/go.mod
@@ -8,17 +8,17 @@ tool (
 )

 require (
-	github.com/99designs/gqlgen v0.17.90
+	github.com/99designs/gqlgen v0.17.91
 	github.com/ClusterCockpit/cc-lib/v2 v2.12.0
 	github.com/ClusterCockpit/cc-line-protocol/v2 v2.4.0
 	github.com/Masterminds/squirrel v1.5.4
 	github.com/alexedwards/scs/sqlite3store v0.0.0-20251002162104-209de6e426de
 	github.com/alexedwards/scs/v2 v2.9.0
-	github.com/aws/aws-sdk-go-v2 v1.41.7
-	github.com/aws/aws-sdk-go-v2/config v1.32.18
-	github.com/aws/aws-sdk-go-v2/credentials v1.19.17
-	github.com/aws/aws-sdk-go-v2/service/s3 v1.102.0
-	github.com/coreos/go-oidc/v3 v3.18.0
+	github.com/aws/aws-sdk-go-v2 v1.42.0
+	github.com/aws/aws-sdk-go-v2/config v1.32.25
+	github.com/aws/aws-sdk-go-v2/credentials v1.19.24
+	github.com/aws/aws-sdk-go-v2/service/s3 v1.104.0
+	github.com/coreos/go-oidc/v3 v3.19.0
 	github.com/expr-lang/expr v1.17.8
 	github.com/go-chi/chi/v5 v5.3.0
 	github.com/go-chi/cors v1.2.2
@@ -28,17 +28,17 @@ require (
 	github.com/golang-migrate/migrate/v4 v4.19.1
 	github.com/google/gops v0.3.29
 	github.com/jmoiron/sqlx v1.4.0
-	github.com/mattn/go-sqlite3 v1.14.44
+	github.com/mattn/go-sqlite3 v1.14.46
 	github.com/parquet-go/parquet-go v0.30.1
 	github.com/qustavo/sqlhooks/v2 v2.1.0
 	github.com/santhosh-tekuri/jsonschema/v5 v5.3.1
 	github.com/stretchr/testify v1.11.1
 	github.com/swaggo/http-swagger v1.3.4
 	github.com/swaggo/swag v1.16.6
-	github.com/vektah/gqlparser/v2 v2.5.33
-	golang.org/x/crypto v0.52.0
+	github.com/vektah/gqlparser/v2 v2.5.34
+	golang.org/x/crypto v0.53.0
 	golang.org/x/oauth2 v0.36.0
-	golang.org/x/sync v0.20.0
+	golang.org/x/sync v0.21.0
 	golang.org/x/time v0.15.0
 )

@@ -48,35 +48,36 @@ require (
 	github.com/agnivade/levenshtein v1.2.1 // indirect
 	github.com/andybalholm/brotli v1.2.1 // indirect
 	github.com/apapsch/go-jsonmerge/v2 v2.0.0 // indirect
-	github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.10 // indirect
-	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.23 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.23 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.23 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/v4a v1.4.24 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.9 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.9.16 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.23 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.23 // indirect
-	github.com/aws/aws-sdk-go-v2/service/signin v1.0.11 // indirect
-	github.com/aws/aws-sdk-go-v2/service/sso v1.30.17 // indirect
-	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.36.0 // indirect
-	github.com/aws/aws-sdk-go-v2/service/sts v1.42.1 // indirect
-	github.com/aws/smithy-go v1.26.0 // indirect
+	github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.13 // indirect
+	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.29 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.29 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.29 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/v4a v1.4.30 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.12 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.9.22 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.29 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.29 // indirect
+	github.com/aws/aws-sdk-go-v2/service/signin v1.2.0 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sso v1.31.3 // indirect
+	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.36.6 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sts v1.43.3 // indirect
+	github.com/aws/smithy-go v1.27.2 // indirect
+	github.com/coder/websocket v1.8.15 // indirect
 	github.com/cpuguy83/go-md2man/v2 v2.0.7 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/fsnotify/fsnotify v1.10.1 // indirect
 	github.com/go-asn1-ber/asn1-ber v1.5.8-0.20250403174932-29230038a667 // indirect
 	github.com/go-jose/go-jose/v4 v4.1.4 // indirect
 	github.com/go-openapi/jsonpointer v0.23.1 // indirect
-	github.com/go-openapi/jsonreference v0.21.5 // indirect
-	github.com/go-openapi/spec v0.22.4 // indirect
-	github.com/go-openapi/swag/conv v0.26.0 // indirect
-	github.com/go-openapi/swag/jsonname v0.26.0 // indirect
-	github.com/go-openapi/swag/jsonutils v0.26.0 // indirect
-	github.com/go-openapi/swag/loading v0.26.0 // indirect
-	github.com/go-openapi/swag/stringutils v0.26.0 // indirect
-	github.com/go-openapi/swag/typeutils v0.26.0 // indirect
-	github.com/go-openapi/swag/yamlutils v0.26.0 // indirect
+	github.com/go-openapi/jsonreference v0.21.6 // indirect
+	github.com/go-openapi/spec v0.22.6 // indirect
+	github.com/go-openapi/swag/conv v0.26.1 // indirect
+	github.com/go-openapi/swag/jsonname v0.26.1 // indirect
+	github.com/go-openapi/swag/jsonutils v0.26.1 // indirect
+	github.com/go-openapi/swag/loading v0.26.1 // indirect
+	github.com/go-openapi/swag/stringutils v0.26.1 // indirect
+	github.com/go-openapi/swag/typeutils v0.26.1 // indirect
+	github.com/go-openapi/swag/yamlutils v0.26.1 // indirect
 	github.com/go-viper/mapstructure/v2 v2.5.0 // indirect
 	github.com/goccy/go-yaml v1.19.2 // indirect
 	github.com/google/uuid v1.6.0 // indirect
@@ -90,12 +91,12 @@ require (
 	github.com/lann/builder v0.0.0-20180802200727-47ae307949d0 // indirect
 	github.com/lann/ps v0.0.0-20150810152359-62de8c46ede0 // indirect
 	github.com/nats-io/nats.go v1.52.0 // indirect
-	github.com/nats-io/nkeys v0.4.15 // indirect
+	github.com/nats-io/nkeys v0.4.16 // indirect
 	github.com/nats-io/nuid v1.0.1 // indirect
 	github.com/oapi-codegen/runtime v1.4.1 // indirect
 	github.com/parquet-go/bitpack v1.0.0 // indirect
 	github.com/parquet-go/jsonlite v1.5.2 // indirect
-	github.com/pierrec/lz4/v4 v4.1.26 // indirect
+	github.com/pierrec/lz4/v4 v4.1.27 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/robfig/cron/v3 v3.0.1 // indirect
 	github.com/rogpeppe/go-internal v1.10.0 // indirect
@@ -106,15 +107,15 @@ require (
 	github.com/swaggo/files v1.0.1 // indirect
 	github.com/twpayne/go-geom v1.6.1 // indirect
 	github.com/urfave/cli/v2 v2.27.7 // indirect
-	github.com/urfave/cli/v3 v3.8.0 // indirect
+	github.com/urfave/cli/v3 v3.9.0 // indirect
 	github.com/xrash/smetrics v0.0.0-20250705151800-55b8f293f342 // indirect
 	go.yaml.in/yaml/v2 v2.4.4 // indirect
 	go.yaml.in/yaml/v3 v3.0.4 // indirect
-	golang.org/x/mod v0.36.0 // indirect
-	golang.org/x/net v0.55.0 // indirect
-	golang.org/x/sys v0.45.0 // indirect
-	golang.org/x/text v0.37.0 // indirect
-	golang.org/x/tools v0.45.0 // indirect
+	golang.org/x/mod v0.37.0 // indirect
+	golang.org/x/net v0.56.0 // indirect
+	golang.org/x/sys v0.46.0 // indirect
+	golang.org/x/text v0.38.0 // indirect
+	golang.org/x/tools v0.46.0 // indirect
 	google.golang.org/protobuf v1.36.11 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	sigs.k8s.io/yaml v1.6.0 // indirect
=== are build artifacts tracked? ===
web/frontend/public/build/jobs.js


Build artifacts are tracked. Let me check whether the rebuilt bundles differ from what's committed, so the "frontend fixes" commit includes them if needed.


cd /Users/jan/prg/ClusterCockpit/cc-backend; echo "=== full short status incl untracked ==="; git status --short; echo "=== build dir diff stat ==="; git status --short web/frontend/public/build/ | head


=== full short status incl untracked ===
M  cmd/cc-backend/main.go
 M go.mod
 M go.sum
 M web/frontend/src/Systems.root.svelte
 M web/frontend/src/config/admin/Options.svelte
 M web/frontend/src/generic/joblist/JobListRow.svelte
 M web/frontend/src/job/Metric.svelte
=== build dir diff stat ===


Build dir shows no changes, so nothing to include there. main.go is already staged. Let me create the three commits.


cd /Users/jan/prg/ClusterCockpit/cc-backend; git commit -m "$(cat <<'EOF'
feat(config): warn on unrecognized top-level config sections

A setting nested at the wrong level (e.g. "resampling" placed next to
"main" instead of inside it) was silently ignored. Emit a startup warning
for any top-level config section not consumed by the backend so such
misconfigurations surface instead of failing silently.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
EOF
)"