/
instrumentation.go
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/
instrumentation.go
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// Copyright 2019-2020 Intel Corporation. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package instrumentation
import (
"fmt"
"github.com/intel/cri-resource-manager/pkg/instrumentation/http"
logger "github.com/intel/cri-resource-manager/pkg/log"
)
const (
// ServiceName is our service name in external tracing and metrics services.
ServiceName = "CRI-RM"
)
// Our logger instance.
var log = logger.NewLogger("instrumentation")
// Our instrumentation service instance.
var svc = newService()
// GetHTTPMux returns our HTTP request mux for external services.
func GetHTTPMux() *http.ServeMux {
if svc == nil {
return nil
}
return svc.http.GetMux()
}
// TracingEnabled returns true if the Jaeger tracing sampler is not disabled.
func TracingEnabled() bool {
if svc == nil {
return false
}
return svc.TracingEnabled()
}
// Start our internal instrumentation services.
func Start() error {
if svc == nil {
return instrumentationError("cannot start, no instrumentation service instance")
}
return svc.Start()
}
// Stop stops our internal instrumentation services.
func Stop() {
if svc != nil {
svc.Stop()
}
}
// Restart restarts our internal instrumentation services.
func Restart() error {
if svc == nil {
return instrumentationError("cannot restart, no instrumentation service instance")
}
return svc.Restart()
}
// instrumentationError produces a formatted instrumentation-specific error.
func instrumentationError(format string, args ...interface{}) error {
return fmt.Errorf("instrumentation: "+format, args...)
}