From d5f5f320eeec38a8410d592f149804280dfebfea Mon Sep 17 00:00:00 2001 From: Felix Hanley Date: Wed, 29 Nov 2017 23:23:00 +1100 Subject: Add readme --- LICENSE | 21 +++++++++++++++++ README.md | 78 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 99 insertions(+) create mode 100644 LICENSE create mode 100644 README.md diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..3050c2d --- /dev/null +++ b/LICENSE @@ -0,0 +1,21 @@ +The MIT License (MIT) + +Copyright (c) 2017 Felix Hanley + +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files (the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +of the Software, and to permit persons to whom the Software is furnished to do +so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/README.md b/README.md new file mode 100644 index 0000000..f43ba06 --- /dev/null +++ b/README.md @@ -0,0 +1,78 @@ +# logger + +A simple logger package that provides levels, a number of output formats, and +named sub-logs. Output formats include plain text, key/value, JSON and +AMQP/RabbitMQ + +## Installation + +Install using `go get github.com/felix/logger`. + +Documentation is available at http://godoc.org/github.com/felix/logger + +## Usage + +### Create a normal logger + +```go +log := logger.New(&logger.Options{ + Name: "app", + Level: logger.Debug, +}) +log.Error("unable to do anything") +``` + +```text +... [INFO ] app: unable to do anything +``` + +### Create a key/value logger + +```go +import "github.com/felix/logger/outputs/keyvalue" + +log := logger.New(&logger.Options{ + Name: "app", + Level: logger.Debug, + Formatter: keyvalue.New(), +}) +log.Warn("invalid something", "id", 344, "error", "generally broken") +``` + +```text +... [WARN ] app: invalid something id=344 error="generally broken" +``` + +```text +... [WARN ] app: invalid something id=344 error="generally broken" +``` + +### Create a sub-logger + +```go +sublog := log.Named("database") +sublog.Info("connection initialised") +``` + +```text +... [INFO ] app.database: connection initialised +``` + +### Create a new Logger with pre-defined values + +For major sub-systems there is no need to repeat values for each log call: + +```go +reqID := "555" +msgLog := sublog.WithFields("request", reqID) +msgLog.Error("failed to process message") +``` + +```text +... [INFO ] app.database: failed to process message request=555 +``` + +## Credits + +Solidly based on all the other loggers around, particularly Hashicorp's simple +hclog with additions and modifications as required. -- cgit v1.2.3