mirror of
https://github.com/ClusterCockpit/cc-metric-collector.git
synced 2024-11-10 04:27:25 +01:00
82 lines
2.6 KiB
Go
82 lines
2.6 KiB
Go
package collectors
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import (
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"encoding/json"
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"time"
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cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
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lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
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)
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// These are the fields we read from the JSON configuration
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type SampleCollectorConfig struct {
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Interval string `json:"interval"`
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}
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// This contains all variables we need during execution and the variables
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// defined by metricCollector (name, init, ...)
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type SampleCollector struct {
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metricCollector
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config SampleTimerCollectorConfig // the configuration structure
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meta map[string]string // default meta information
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tags map[string]string // default tags
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}
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func (m *SampleCollector) Init(config json.RawMessage) error {
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var err error = nil
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// Always set the name early in Init() to use it in cclog.Component* functions
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m.name = "InternalCollector"
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// This is for later use, also call it early
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m.setup()
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// Define meta information sent with each metric
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// (Can also be dynamic or this is the basic set with extension through AddMeta())
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m.meta = map[string]string{"source": m.name, "group": "SAMPLE"}
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// Define tags sent with each metric
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// The 'type' tag is always needed, it defines the granulatity of the metric
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// node -> whole system
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// socket -> CPU socket (requires socket ID as 'type-id' tag)
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// cpu -> single CPU hardware thread (requires cpu ID as 'type-id' tag)
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m.tags = map[string]string{"type": "node"}
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// Read in the JSON configuration
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if len(config) > 0 {
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err = json.Unmarshal(config, &m.config)
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if err != nil {
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cclog.ComponentError(m.name, "Error reading config:", err.Error())
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return err
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}
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}
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// Set up everything that the collector requires during the Read() execution
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// Check files required, test execution of some commands, create data structure
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// for all topological entities (sockets, NUMA domains, ...)
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// Return some useful error message in case of any failures
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// Set this flag only if everything is initialized properly, all required files exist, ...
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m.init = true
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return err
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}
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func (m *SampleCollector) Read(interval time.Duration, output chan lp.CCMetric) {
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// Create a sample metric
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timestamp := time.Now()
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value := 1.0
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// If you want to measure something for a specific amout of time, use interval
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// start := readState()
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// time.Sleep(interval)
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// stop := readState()
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// value = (stop - start) / interval.Seconds()
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y, err := lp.New("sample_metric", m.tags, m.meta, map[string]interface{}{"value": value}, timestamp)
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if err == nil {
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// Send it to output channel
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output <- y
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}
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}
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func (m *SampleCollector) Close() {
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// Unset flag
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m.init = false
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}
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