From 77c172b823b64ebface655681ab0749b9d2f7081 Mon Sep 17 00:00:00 2001
From: Raúl Benencia <raul@thousandeyes.com>
Date: Fri, 13 Apr 2018 16:30:31 -0700
Subject: First public commit
---
internal/log/log.go | 61 +++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 61 insertions(+)
create mode 100644 internal/log/log.go
(limited to 'internal/log')
diff --git a/internal/log/log.go b/internal/log/log.go
new file mode 100644
index 0000000..071a816
--- /dev/null
+++ b/internal/log/log.go
@@ -0,0 +1,61 @@
+// Copyright 2018 ThousandEyes Inc.
+//
+// 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 log
+
+import (
+ "io"
+
+ "github.com/go-kit/kit/log"
+ "github.com/go-kit/kit/log/level"
+)
+
+// Logger struct holds a log.Logger plus functions required for logging
+// with different levels. They functions are syntactic sugar to avoid
+// having to import "github.com/go-kit/kit/log/level" in every package that
+// has to cast a log.
+type Logger struct {
+ Raw log.Logger
+ Info func(...interface{}) error
+ Debug func(...interface{}) error
+ Error func(...interface{}) error
+}
+
+const callerLevel int = 6
+
+// MakeLogger receives a io.Writer and return a Logger struct.
+func MakeLogger(w io.Writer) Logger {
+ raw := log.NewLogfmtLogger(log.NewSyncWriter(w))
+ raw = log.With(raw, "ts", log.DefaultTimestampUTC, "caller", log.Caller(callerLevel))
+ filtered := level.NewFilter(raw, level.AllowInfo())
+
+ return Logger{
+ Raw: raw,
+ Info: level.Info(filtered).Log,
+ Debug: level.Debug(filtered).Log,
+ Error: level.Error(filtered).Log,
+ }
+}
+
+// AllowDebug receives a Logger and enables the debug logging level.
+func AllowDebug(l Logger) Logger {
+ filtered := level.NewFilter(l.Raw, level.AllowDebug())
+
+ return Logger{
+ Raw: l.Raw,
+ Info: level.Info(filtered).Log,
+ Debug: level.Debug(filtered).Log,
+ Error: level.Error(filtered).Log,
+ }
+}
--
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