mirror of https://github.com/minio/minio.git
123 lines
2.8 KiB
Go
123 lines
2.8 KiB
Go
/*
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* Minio Cloud Storage, (C) 2018 Minio, Inc.
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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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*/
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package logger
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import (
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"context"
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"fmt"
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"sync"
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)
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// Key used for Get/SetReqInfo
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type contextKeyType string
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const contextLogKey = contextKeyType("miniolog")
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// KeyVal - appended to ReqInfo.Tags
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type KeyVal struct {
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Key string
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Val string
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}
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// ReqInfo stores the request info.
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type ReqInfo struct {
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RemoteHost string // Client Host/IP
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UserAgent string // User Agent
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RequestID string // x-amz-request-id
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API string // API name - GetObject PutObject NewMultipartUpload etc.
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BucketName string // Bucket name
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ObjectName string // Object name
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tags []KeyVal // Any additional info not accommodated by above fields
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sync.RWMutex
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}
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// NewReqInfo :
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func NewReqInfo(remoteHost, userAgent, requestID, api, bucket, object string) *ReqInfo {
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req := ReqInfo{}
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req.RemoteHost = remoteHost
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req.UserAgent = userAgent
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req.API = api
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req.RequestID = requestID
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req.BucketName = bucket
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req.ObjectName = object
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return &req
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}
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// AppendTags - appends key/val to ReqInfo.tags
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func (r *ReqInfo) AppendTags(key string, val string) *ReqInfo {
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if r == nil {
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return nil
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}
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r.Lock()
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defer r.Unlock()
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r.tags = append(r.tags, KeyVal{key, val})
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return r
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}
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// SetTags - sets key/val to ReqInfo.tags
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func (r *ReqInfo) SetTags(key string, val string) *ReqInfo {
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if r == nil {
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return nil
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}
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r.Lock()
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defer r.Unlock()
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// Search of tag key already exists in tags
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var updated bool
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for _, tag := range r.tags {
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if tag.Key == key {
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tag.Val = val
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updated = true
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break
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}
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}
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if !updated {
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// Append to the end of tags list
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r.tags = append(r.tags, KeyVal{key, val})
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}
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return r
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}
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// GetTags - returns the user defined tags
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func (r *ReqInfo) GetTags() []KeyVal {
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if r == nil {
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return nil
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}
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r.RLock()
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defer r.RUnlock()
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return append([]KeyVal(nil), r.tags...)
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}
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// SetReqInfo sets ReqInfo in the context.
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func SetReqInfo(ctx context.Context, req *ReqInfo) context.Context {
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if ctx == nil {
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LogIf(context.Background(), fmt.Errorf("context is nil"))
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return nil
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}
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return context.WithValue(ctx, contextLogKey, req)
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}
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// GetReqInfo returns ReqInfo if set.
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func GetReqInfo(ctx context.Context) *ReqInfo {
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if ctx != nil {
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r, ok := ctx.Value(contextLogKey).(*ReqInfo)
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if ok {
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return r
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}
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}
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return nil
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}
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