77 lines
1.5 KiB
Go
77 lines
1.5 KiB
Go
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package instana
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import (
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"os"
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"path/filepath"
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)
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const (
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DefaultMaxBufferedSpans = 1000
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DefaultForceSpanSendAt = 500
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)
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type sensorS struct {
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meter *meterS
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agent *agentS
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options *Options
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serviceName string
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}
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var sensor *sensorS
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func (r *sensorS) init(options *Options) {
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//sensor can be initialized explicit or implicit through OpenTracing global init
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if r.meter == nil {
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r.setOptions(options)
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r.configureServiceName()
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r.agent = r.initAgent()
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r.meter = r.initMeter()
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}
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}
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func (r *sensorS) setOptions(options *Options) {
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r.options = options
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if r.options == nil {
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r.options = &Options{}
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}
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if r.options.MaxBufferedSpans == 0 {
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r.options.MaxBufferedSpans = DefaultMaxBufferedSpans
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}
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if r.options.ForceTransmissionStartingAt == 0 {
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r.options.ForceTransmissionStartingAt = DefaultForceSpanSendAt
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}
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}
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func (r *sensorS) getOptions() *Options {
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return r.options
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}
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func (r *sensorS) configureServiceName() {
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if r.options != nil {
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r.serviceName = r.options.Service
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}
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if r.serviceName == "" {
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r.serviceName = filepath.Base(os.Args[0])
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}
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}
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// InitSensor Intializes the sensor (without tracing) to begin collecting
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// and reporting metrics.
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func InitSensor(options *Options) {
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if sensor == nil {
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sensor = new(sensorS)
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// If this environment variable is set, then override log level
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_, ok := os.LookupEnv("INSTANA_DEV")
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if ok {
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options.LogLevel = Debug
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}
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sensor.initLog()
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sensor.init(options)
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log.debug("initialized sensor")
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}
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}
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