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Copy pathreqinfo.go
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127 lines (115 loc) · 2.96 KB
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/*
* 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 logger
import (
"context"
"fmt"
"sync"
)
// Key used for Get/SetReqInfo
type contextKeyType string
const contextLogKey = contextKeyType("miniolog")
// KeyVal - appended to ReqInfo.Tags
type KeyVal struct {
Key string
Val string
}
// ReqInfo stores the request info.
type ReqInfo struct {
RemoteHost string // Client Host/IP
UserAgent string // User Agent
DeploymentID string // x-minio-deployment-id
RequestID string // x-amz-request-id
API string // API name - GetObject PutObject NewMultipartUpload etc.
BucketName string // Bucket name
ObjectName string // Object name
tags []KeyVal // Any additional info not accommodated by above fields
sync.RWMutex
}
// NewReqInfo :
func NewReqInfo(remoteHost, userAgent, deploymentID, requestID, api, bucket, object string) *ReqInfo {
req := ReqInfo{}
req.RemoteHost = remoteHost
req.UserAgent = userAgent
req.API = api
req.DeploymentID = deploymentID
req.RequestID = requestID
req.BucketName = bucket
req.ObjectName = object
return &req
}
// AppendTags - appends key/val to ReqInfo.tags
func (r *ReqInfo) AppendTags(key string, val string) *ReqInfo {
if r == nil {
return nil
}
r.Lock()
defer r.Unlock()
r.tags = append(r.tags, KeyVal{key, val})
return r
}
// SetTags - sets key/val to ReqInfo.tags
func (r *ReqInfo) SetTags(key string, val string) *ReqInfo {
if r == nil {
return nil
}
r.Lock()
defer r.Unlock()
// Search of tag key already exists in tags
var updated bool
for _, tag := range r.tags {
if tag.Key == key {
tag.Val = val
updated = true
break
}
}
if !updated {
// Append to the end of tags list
r.tags = append(r.tags, KeyVal{key, val})
}
return r
}
// GetTags - returns the user defined tags
func (r *ReqInfo) GetTags() []KeyVal {
if r == nil {
return nil
}
r.RLock()
defer r.RUnlock()
return append([]KeyVal(nil), r.tags...)
}
// SetReqInfo sets ReqInfo in the context.
func SetReqInfo(ctx context.Context, req *ReqInfo) context.Context {
if ctx == nil {
LogIf(context.Background(), fmt.Errorf("context is nil"))
return nil
}
return context.WithValue(ctx, contextLogKey, req)
}
// GetReqInfo returns ReqInfo if set.
func GetReqInfo(ctx context.Context) *ReqInfo {
if ctx != nil {
r, ok := ctx.Value(contextLogKey).(*ReqInfo)
if ok {
return r
}
r = &ReqInfo{}
SetReqInfo(ctx, r)
return r
}
return nil
}