70 lines
2.0 KiB
Go
70 lines
2.0 KiB
Go
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. 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,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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package thrift
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import (
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"log"
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"os"
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"testing"
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)
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// Logger is a simple wrapper of a logging function.
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//
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// In reality the users might actually use different logging libraries, and they
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// are not always compatible with each other.
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//
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// Logger is meant to be a simple common ground that it's easy to wrap whatever
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// logging library they use into.
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//
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// See https://issues.apache.org/jira/browse/THRIFT-4985 for the design
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// discussion behind it.
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type Logger func(msg string)
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// NopLogger is a Logger implementation that does nothing.
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func NopLogger(msg string) {}
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// StdLogger wraps stdlib log package into a Logger.
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//
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// If logger passed in is nil, it will fallback to use stderr and default flags.
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func StdLogger(logger *log.Logger) Logger {
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if logger == nil {
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logger = log.New(os.Stderr, "", log.LstdFlags)
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}
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return func(msg string) {
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logger.Print(msg)
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}
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}
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// TestLogger is a Logger implementation can be used in test codes.
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//
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// It fails the test when being called.
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func TestLogger(tb testing.TB) Logger {
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return func(msg string) {
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tb.Errorf("logger called with msg: %q", msg)
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}
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}
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func fallbackLogger(logger Logger) Logger {
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if logger == nil {
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return StdLogger(nil)
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}
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return logger
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}
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