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InfluxSink: Use batch&flush logic from HttpSink

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This commit is contained in:
Thomas Roehl 2022-04-01 18:37:45 +02:00
parent a3b9d8a90b
commit 28348bd108
2 changed files with 109 additions and 43 deletions
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123
sinks/influxSink.go
View File

@ -6,12 +6,14 @@ import (
"encoding/json"
"errors"
"fmt"
"sync"
"time"
cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
influxdb2 "github.com/influxdata/influxdb-client-go/v2"
influxdb2Api "github.com/influxdata/influxdb-client-go/v2/api"
"github.com/influxdata/influxdb-client-go/v2/api/write"
)
type InfluxSinkConfig struct {
@ -23,11 +25,13 @@ type InfluxSinkConfig struct {
Password string `json:"password,omitempty"`
Organization string `json:"organization,omitempty"`
SSL bool `json:"ssl,omitempty"`
FlushDelay string `json:"flush_delay,omitempty"`
BatchSize int `json:"batch_size,omitempty"`
RetentionPol string `json:"retention_policy,omitempty"`
InfluxRetryInterval string `json:"retry_interval"`
InfluxExponentialBase uint `json:"retry_exponential_base"`
InfluxMaxRetries uint `json:"max_retries"`
InfluxMaxRetryTime string `json:"max_retry_time"`
// InfluxRetryInterval string `json:"retry_interval"`
// InfluxExponentialBase uint `json:"retry_exponential_base"`
// InfluxMaxRetries uint `json:"max_retries"`
// InfluxMaxRetryTime string `json:"max_retry_time"`
//InfluxMaxRetryDelay string `json:"max_retry_delay"` // It is mentioned in the docs but there is no way to set it
}
@ -38,6 +42,10 @@ type InfluxSink struct {
config InfluxSinkConfig
influxRetryInterval uint
influxMaxRetryTime uint
batch []*write.Point
flushTimer *time.Timer
flushDelay time.Duration
lock sync.Mutex // Flush() runs in another goroutine, so this lock has to protect the buffer
//influxMaxRetryDelay uint
}
@ -56,16 +64,31 @@ func (s *InfluxSink) connect() error {
}
cclog.ComponentDebug(s.name, "Using URI", uri, "Org", s.config.Organization, "Bucket", s.config.Database)
clientOptions := influxdb2.DefaultOptions()
// if s.influxRetryInterval != 0 {
// cclog.ComponentDebug(s.name, "MaxRetryInterval", s.influxRetryInterval)
// clientOptions.SetMaxRetryInterval(s.influxRetryInterval)
// }
// if s.influxMaxRetryTime != 0 {
// cclog.ComponentDebug(s.name, "MaxRetryTime", s.influxMaxRetryTime)
// clientOptions.SetMaxRetryTime(s.influxMaxRetryTime)
// }
// if s.config.InfluxExponentialBase != 0 {
// cclog.ComponentDebug(s.name, "Exponential Base", s.config.InfluxExponentialBase)
// clientOptions.SetExponentialBase(s.config.InfluxExponentialBase)
// }
// if s.config.InfluxMaxRetries != 0 {
// cclog.ComponentDebug(s.name, "Max Retries", s.config.InfluxMaxRetries)
// clientOptions.SetMaxRetries(s.config.InfluxMaxRetries)
// }
clientOptions.SetTLSConfig(
&tls.Config{
InsecureSkipVerify: true,
},
)
clientOptions.SetMaxRetryInterval(s.influxRetryInterval)
clientOptions.SetMaxRetryTime(s.influxMaxRetryTime)
clientOptions.SetExponentialBase(s.config.InfluxExponentialBase)
clientOptions.SetMaxRetries(s.config.InfluxMaxRetries)
clientOptions.SetPrecision(time.Second)
s.client = influxdb2.NewClientWithOptions(uri, auth, clientOptions)
s.writeApi = s.client.WriteAPIBlocking(s.config.Organization, s.config.Database)
@ -80,38 +103,76 @@ func (s *InfluxSink) connect() error {
}
func (s *InfluxSink) Write(m lp.CCMetric) error {
err :=
s.writeApi.WritePoint(
context.Background(),
m.ToPoint(s.meta_as_tags),
)
return err
// err :=
// s.writeApi.WritePoint(
// context.Background(),
// m.ToPoint(s.meta_as_tags),
// )
if len(s.batch) == 0 && s.flushDelay != 0 {
// This is the first write since the last flush, start the flushTimer!
if s.flushTimer != nil && s.flushTimer.Stop() {
cclog.ComponentDebug(s.name, "unexpected: the flushTimer was already running?")
}
// Run a batched flush for all lines that have arrived in the last second
s.flushTimer = time.AfterFunc(s.flushDelay, func() {
if err := s.Flush(); err != nil {
cclog.ComponentError(s.name, "flush failed:", err.Error())
}
})
}
p := m.ToPoint(s.meta_as_tags)
s.lock.Lock()
s.batch = append(s.batch, p)
s.lock.Unlock()
// Flush synchronously if "flush_delay" is zero
if s.flushDelay == 0 {
return s.Flush()
}
return nil
}
func (s *InfluxSink) Flush() error {
s.lock.Lock()
defer s.lock.Unlock()
if len(s.batch) == 0 {
return nil
}
err := s.writeApi.WritePoint(context.Background(), s.batch...)
if err != nil {
cclog.ComponentError(s.name, "flush failed:", err.Error())
return err
}
s.batch = s.batch[:0]
return nil
}
func (s *InfluxSink) Close() {
cclog.ComponentDebug(s.name, "Closing InfluxDB connection")
s.flushTimer.Stop()
s.Flush()
s.client.Close()
}
func NewInfluxSink(name string, config json.RawMessage) (Sink, error) {
s := new(InfluxSink)
s.name = fmt.Sprintf("InfluxSink(%s)", name)
s.config.BatchSize = 100
s.config.FlushDelay = "1s"
if len(config) > 0 {
err := json.Unmarshal(config, &s.config)
if err != nil {
return nil, err
}
}
s.influxRetryInterval = uint(time.Duration(1) * time.Second)
s.config.InfluxRetryInterval = "1s"
s.influxMaxRetryTime = uint(7 * time.Duration(24) * time.Hour)
s.config.InfluxMaxRetryTime = "168h"
s.config.InfluxMaxRetries = 20
s.config.InfluxExponentialBase = 2
s.influxRetryInterval = 0
s.influxMaxRetryTime = 0
// s.config.InfluxRetryInterval = ""
// s.config.InfluxMaxRetryTime = ""
// s.config.InfluxMaxRetries = 0
// s.config.InfluxExponentialBase = 0
if len(s.config.Host) == 0 ||
len(s.config.Port) == 0 ||
@ -126,15 +187,25 @@ func NewInfluxSink(name string, config json.RawMessage) (Sink, error) {
s.meta_as_tags[k] = true
}
toUint := func(duration string, def uint) uint {
t, err := time.ParseDuration(duration)
// toUint := func(duration string, def uint) uint {
// if len(duration) > 0 {
// t, err := time.ParseDuration(duration)
// if err == nil {
// return uint(t.Milliseconds())
// }
// }
// return def
// }
// s.influxRetryInterval = toUint(s.config.InfluxRetryInterval, s.influxRetryInterval)
// s.influxMaxRetryTime = toUint(s.config.InfluxMaxRetryTime, s.influxMaxRetryTime)
if len(s.config.FlushDelay) > 0 {
t, err := time.ParseDuration(s.config.FlushDelay)
if err == nil {
return uint(t.Milliseconds())
s.flushDelay = t
}
return def
}
s.influxRetryInterval = toUint(s.config.InfluxRetryInterval, s.influxRetryInterval)
s.influxMaxRetryTime = toUint(s.config.InfluxMaxRetryTime, s.influxMaxRetryTime)
s.batch = make([]*write.Point, 0, s.config.BatchSize)
// Connect to InfluxDB server
if err := s.connect(); err != nil {

13
sinks/influxSink.md
View File

@ -17,10 +17,8 @@ The `influxdb` sink uses the official [InfluxDB golang client](https://pkg.go.de
"password" : "examplepw",
"organization": "myorg",
"ssl": true,
"retry_interval" : "1s",
"retry_exponential_base" : 2,
"max_retries": 20,
"max_retry_time" : "168h"
"flush_delay" : "1s",
"batch_size" : 100
}
}
```
@ -34,9 +32,6 @@ The `influxdb` sink uses the official [InfluxDB golang client](https://pkg.go.de
- `password`: Password for basic authentification
- `organization`: Organization in the InfluxDB
- `ssl`: Use SSL connection
- `retry_interval`: Base retry interval for failed write requests, default 1s
- `retry_exponential_base`: The retry interval is exponentially increased with this base, default 2
- `max_retries`: Maximal number of retry attempts
- `max_retry_time`: Maximal time to retry failed writes, default 168h (one week)
- `flush_delay`: Group metrics coming in to a single batch
- `batch_size`: Maximal batch size
For information about the calculation of the retry interval settings, see [offical influxdb-client-go documentation](https://github.com/influxdata/influxdb-client-go#handling-of-failed-async-writes)