mirror of
https://github.com/fnproject/fn.git
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84 lines
2.7 KiB
Go
84 lines
2.7 KiB
Go
// Copyright 2016 Iron.io
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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 common
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import (
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"net/url"
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"os"
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"github.com/Sirupsen/logrus"
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)
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func SetLogLevel(ll string) {
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if ll == "" {
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ll = "info"
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}
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logrus.WithFields(logrus.Fields{"level": ll}).Info("Setting log level to")
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logLevel, err := logrus.ParseLevel(ll)
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if err != nil {
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logrus.WithFields(logrus.Fields{"level": ll}).Warn("Could not parse log level, setting to INFO")
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logLevel = logrus.InfoLevel
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}
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logrus.SetLevel(logLevel)
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}
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func SetLogDest(to, prefix string) {
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logrus.SetOutput(os.Stderr) // in case logrus changes their mind...
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if to == "stderr" {
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return
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}
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// possible schemes: { udp, tcp, file }
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// file url must contain only a path, syslog must contain only a host[:port]
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// expect: [scheme://][host][:port][/path]
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// default scheme to udp:// if none given
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url, err := url.Parse(to)
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if url.Host == "" && url.Path == "" {
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logrus.WithFields(logrus.Fields{"to": to}).Warn("No scheme on logging url, adding udp://")
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// this happens when no scheme like udp:// is present
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to = "udp://" + to
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url, err = url.Parse(to)
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}
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if err != nil {
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logrus.WithError(err).WithFields(logrus.Fields{"to": to}).Error("could not parse logging URI, defaulting to stderr")
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return
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}
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// File URL must contain only `url.Path`. Syslog location must contain only `url.Host`
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if (url.Host == "" && url.Path == "") || (url.Host != "" && url.Path != "") {
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logrus.WithFields(logrus.Fields{"to": to, "uri": url}).Error("invalid logging location, defaulting to stderr")
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return
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}
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switch url.Scheme {
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case "udp", "tcp":
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err = NewSyslogHook(url, prefix)
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if err != nil {
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logrus.WithFields(logrus.Fields{"uri": url, "to": to}).WithError(err).Error("unable to connect to syslog, defaulting to stderr")
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return
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}
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case "file":
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f, err := os.OpenFile(url.Path, os.O_RDWR|os.O_APPEND|os.O_CREATE, 0666)
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if err != nil {
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logrus.WithError(err).WithFields(logrus.Fields{"to": to, "path": url.Path}).Error("cannot open file, defaulting to stderr")
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return
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}
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logrus.SetOutput(f)
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default:
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logrus.WithFields(logrus.Fields{"scheme": url.Scheme, "to": to}).Error("unknown logging location scheme, defaulting to stderr")
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}
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}
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