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reqinfo.go
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reqinfo.go
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// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
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 interface{}
}
// ObjectVersion object version key/versionId
type ObjectVersion struct {
ObjectName string
VersionID string `json:"VersionId,omitempty"`
}
// ReqInfo stores the request info.
type ReqInfo struct {
RemoteHost string // Client Host/IP
Host string // Node 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 `json:",omitempty"` // Bucket name
ObjectName string `json:",omitempty"` // Object name
VersionID string `json:",omitempty"` // corresponding versionID for the object
Objects []ObjectVersion `json:",omitempty"` // Only set during MultiObject delete handler.
AccessKey string // Access Key
tags []KeyVal // Any additional info not accommodated by above fields
sync.RWMutex
}
// NewReqInfo :
func NewReqInfo(remoteHost, userAgent, deploymentID, requestID, api, bucket, object string) *ReqInfo {
return &ReqInfo{
RemoteHost: remoteHost,
UserAgent: userAgent,
API: api,
DeploymentID: deploymentID,
RequestID: requestID,
BucketName: bucket,
ObjectName: object,
}
}
// AppendTags - appends key/val to ReqInfo.tags
func (r *ReqInfo) AppendTags(key string, val interface{}) *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 interface{}) *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...)
}
// GetTagsMap - returns the user defined tags in a map structure
func (r *ReqInfo) GetTagsMap() map[string]interface{} {
if r == nil {
return nil
}
r.RLock()
defer r.RUnlock()
m := make(map[string]interface{}, len(r.tags))
for _, t := range r.tags {
m[t.Key] = t.Val
}
return m
}
// 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
}