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// +build continuous_profiler_stackdriver
package monitoring
import (
"net/url"
"os"
"cloud.google.com/go/profiler"
"gitlab.com/gitlab-org/labkit/log"
"google.golang.org/api/option"
)
const profilerEnvKey = "GITLAB_CONTINUOUS_PROFILING"
// Exposing to tests.
var profStart = profiler.Start
func initProfiler(opts profilerOpts) {
driverParams, exists := os.LookupEnv(profilerEnvKey)
if !exists {
return
}
u, err := url.Parse(driverParams)
if err != nil {
log.WithError(err).Warn("unable to parse env var content")
return
}
query := u.Query()
driverName := u.Path
if driverName != "stackdriver" {
log.WithField("driver", driverName).Warn("unknown driver")
return
}
config := profiler.Config{
Service: query.Get("service"),
ServiceVersion: query.Get("service_version"),
ProjectID: query.Get("project_id"),
DebugLogging: query.Get("debug_logging") == "true",
MutexProfiling: true,
}
// If the service version is given through opts, it takes precedence.
if opts.ServiceVersion != "" {
config.ServiceVersion = opts.ServiceVersion
}
var clientOpts []option.ClientOption
if opts.CredentialsFile != "" {
clientOpts = append(clientOpts, option.WithCredentialsFile(opts.CredentialsFile))
}
if err := profStart(config, clientOpts...); err != nil {
log.WithError(err).Warnf("unable to initialize %v profiler", driverName)
return
}
log.WithFields(log.Fields{
"driver": driverName,
"service": config.Service,
"serviceVersion": config.ServiceVersion,
"projectId": config.ProjectID,
}).Info("profiler enabled")
}
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