135 lines
2.9 KiB
Go
135 lines
2.9 KiB
Go
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// Copyright © 2016 Abcum Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package log
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import (
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"context"
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"fmt"
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"net/http"
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"os"
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"time"
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"github.com/abcum/fibre"
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"github.com/sirupsen/logrus"
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"cloud.google.com/go/compute/metadata"
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"cloud.google.com/go/logging"
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)
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type StackdriverLogger struct {
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name string
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levels []logrus.Level
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client *logging.Client
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logger *logging.Logger
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}
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func NewStackDriver() *StackdriverLogger {
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var err error
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ctx := context.Background()
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proj := os.Getenv("PROJECT")
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hook := new(StackdriverLogger)
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// If no project id has been set
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// then attempt to pull this from
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// machine metadata if on GCE.
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if len(proj) == 0 {
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if proj, err = metadata.ProjectID(); err != nil {
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log.Fatalf("Failed to connect to Stackdriver: %v", err)
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}
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}
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// Connect to Stackdriver using a
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// credentials file if one has been
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// specified, or metadata if not.
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hook.client, err = logging.NewClient(ctx, proj)
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if err != nil {
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log.Fatalf("Failed to connect to Stackdriver: %v", err)
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}
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err = hook.client.Ping(ctx)
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if err != nil {
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log.Fatalf("Failed to connect to Stackdriver: %v", err)
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}
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hook.logger = hook.client.Logger(name)
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return hook
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}
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func (h *StackdriverLogger) Levels() []logrus.Level {
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switch log.GetLevel() {
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case TraceLevel:
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return TraceLevels
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case DebugLevel:
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return DebugLevels
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case InfoLevel:
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return InfoLevels
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case WarnLevel:
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return WarnLevels
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case ErrorLevel:
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return ErrorLevels
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case FatalLevel:
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return FatalLevels
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case PanicLevel:
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return PanicLevels
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default:
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return DebugLevels
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}
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}
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func (h *StackdriverLogger) Fire(entry *logrus.Entry) error {
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e := logging.Entry{
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Timestamp: entry.Time,
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Labels: make(map[string]string, len(entry.Data)),
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Payload: entry.Message,
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Severity: logging.ParseSeverity(entry.Level.String()),
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}
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for k, v := range entry.Data {
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switch i := v.(type) {
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default:
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e.Labels[k] = fmt.Sprintf("%v", i)
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case *http.Request:
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e.HTTPRequest = &logging.HTTPRequest{
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Request: i,
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RemoteIP: i.RemoteAddr,
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}
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case *fibre.Context:
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e.HTTPRequest = &logging.HTTPRequest{
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RemoteIP: i.IP().String(),
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Request: i.Request().Request,
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Status: i.Response().Status(),
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RequestSize: i.Request().Size(),
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ResponseSize: i.Response().Size(),
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Latency: time.Since(i.Request().Start()),
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}
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}
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}
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h.logger.Log(e)
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return nil
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}
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