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minio/cmd/logger/target/console/console.go

136 lines
3.3 KiB

/*
* MinIO Cloud Storage, (C) 2018 MinIO, 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 console
import (
"encoding/json"
"fmt"
"strings"
"time"
"github.com/minio/minio/cmd/logger"
"github.com/minio/minio/cmd/logger/message/log"
"github.com/minio/minio/pkg/color"
"github.com/minio/minio/pkg/console"
)
// Target implements loggerTarget to send log
// in plain or json format to the standard output.
type Target struct{}
// Validate - validate if the tty can be written to
func (c *Target) Validate() error {
return nil
}
// Endpoint returns the backend endpoint
func (c *Target) Endpoint() string {
return ""
}
func (c *Target) String() string {
return "console"
}
// Send log message 'e' to console
func (c *Target) Send(e interface{}, logKind string) error {
entry, ok := e.(log.Entry)
if !ok {
return fmt.Errorf("Uexpected log entry structure %#v", e)
}
if logger.IsJSON() {
logJSON, err := json.Marshal(&entry)
if err != nil {
return err
}
fmt.Println(string(logJSON))
return nil
}
traceLength := len(entry.Trace.Source)
trace := make([]string, traceLength)
// Add a sequence number and formatting for each stack trace
// No formatting is required for the first entry
for i, element := range entry.Trace.Source {
trace[i] = fmt.Sprintf("%8v: %s", traceLength-i, element)
}
tagString := ""
for key, value := range entry.Trace.Variables {
if value != "" {
if tagString != "" {
tagString += ", "
}
tagString += fmt.Sprintf("%s=%v", key, value)
}
}
apiString := "API: " + entry.API.Name + "("
if entry.API.Args != nil && entry.API.Args.Bucket != "" {
apiString = apiString + "bucket=" + entry.API.Args.Bucket
}
if entry.API.Args != nil && entry.API.Args.Object != "" {
apiString = apiString + ", object=" + entry.API.Args.Object
}
apiString += ")"
timeString := "Time: " + time.Now().Format(logger.TimeFormat)
var deploymentID string
if entry.DeploymentID != "" {
deploymentID = "\nDeploymentID: " + entry.DeploymentID
}
var requestID string
if entry.RequestID != "" {
requestID = "\nRequestID: " + entry.RequestID
}
var remoteHost string
if entry.RemoteHost != "" {
remoteHost = "\nRemoteHost: " + entry.RemoteHost
}
var host string
if entry.Host != "" {
host = "\nHost: " + entry.Host
}
var userAgent string
if entry.UserAgent != "" {
userAgent = "\nUserAgent: " + entry.UserAgent
}
if len(entry.Trace.Variables) > 0 {
tagString = "\n " + tagString
}
var msg = color.FgRed(color.Bold(entry.Trace.Message))
var output = fmt.Sprintf("\n%s\n%s%s%s%s%s%s\nError: %s%s\n%s",
apiString, timeString, deploymentID, requestID, remoteHost, host, userAgent,
msg, tagString, strings.Join(trace, "\n"))
console.Println(output)
return nil
}
// New initializes a new logger target
// which prints log directly in the standard
// output.
func New() *Target {
return &Target{}
}