forked from TrueCloudLab/restic
91 lines
2.5 KiB
Go
91 lines
2.5 KiB
Go
|
// Copyright 2016 Google Inc. 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 logging contains a Stackdriver Logging client suitable for writing logs.
|
||
|
|
For reading logs, and working with sinks, metrics and monitored resources,
|
||
|
|
see package cloud.google.com/go/logging/logadmin.
|
||
|
|
|
||
|
|
This client uses Logging API v2.
|
||
|
|
See https://cloud.google.com/logging/docs/api/v2/ for an introduction to the API.
|
||
|
|
|
||
|
|
|
||
|
|
Note: This package is in beta. Some backwards-incompatible changes may occur.
|
||
|
|
|
||
|
|
|
||
|
|
Creating a Client
|
||
|
|
|
||
|
|
Use a Client to interact with the Stackdriver Logging API.
|
||
|
|
|
||
|
|
// Create a Client
|
||
|
|
ctx := context.Background()
|
||
|
|
client, err := logging.NewClient(ctx, "my-project")
|
||
|
|
if err != nil {
|
||
|
|
// TODO: Handle error.
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
Basic Usage
|
||
|
|
|
||
|
|
For most use-cases, you'll want to add log entries to a buffer to be periodically
|
||
|
|
flushed (automatically and asynchronously) to the Stackdriver Logging service.
|
||
|
|
|
||
|
|
// Initialize a logger
|
||
|
|
lg := client.Logger("my-log")
|
||
|
|
|
||
|
|
// Add entry to log buffer
|
||
|
|
lg.Log(logging.Entry{Payload: "something happened!"})
|
||
|
|
|
||
|
|
|
||
|
|
Closing your Client
|
||
|
|
|
||
|
|
You should call Client.Close before your program exits to flush any buffered log entries to the Stackdriver Logging service.
|
||
|
|
|
||
|
|
// Close the client when finished.
|
||
|
|
err = client.Close()
|
||
|
|
if err != nil {
|
||
|
|
// TODO: Handle error.
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
Synchronous Logging
|
||
|
|
|
||
|
|
For critical errors, you may want to send your log entries immediately.
|
||
|
|
LogSync is slow and will block until the log entry has been sent, so it is
|
||
|
|
not recommended for basic use.
|
||
|
|
|
||
|
|
lg.LogSync(ctx, logging.Entry{Payload: "ALERT! Something critical happened!"})
|
||
|
|
|
||
|
|
|
||
|
|
The Standard Logger Interface
|
||
|
|
|
||
|
|
You may want use a standard log.Logger in your program.
|
||
|
|
|
||
|
|
// stdlg implements log.Logger
|
||
|
|
stdlg := lg.StandardLogger(logging.Info)
|
||
|
|
stdlg.Println("some info")
|
||
|
|
|
||
|
|
|
||
|
|
Log Levels
|
||
|
|
|
||
|
|
An Entry may have one of a number of severity levels associated with it.
|
||
|
|
|
||
|
|
logging.Entry{
|
||
|
|
Payload: "something terrible happened!",
|
||
|
|
Severity: logging.Critical,
|
||
|
|
}
|
||
|
|
|
||
|
|
*/
|
||
|
|
package logging // import "cloud.google.com/go/logging"
|