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* add new api for pod log * update params * add eof for log stream end
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154 changes: 154 additions & 0 deletions
154
pkg/apiserver/cubeapi/resourcemanage/handle/proxypodlog.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,154 @@ | ||
| /* | ||
| Copyright 2021 KubeCube Authors | ||
| 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 resourcemanage | ||
|
|
||
| import ( | ||
| "bufio" | ||
| "context" | ||
| "errors" | ||
| "io" | ||
| "strconv" | ||
|
|
||
| "github.com/gin-gonic/gin" | ||
| "github.com/kubecube-io/kubecube/pkg/clog" | ||
| "github.com/kubecube-io/kubecube/pkg/multicluster/client" | ||
| "github.com/kubecube-io/kubecube/pkg/utils/constants" | ||
| "github.com/kubecube-io/kubecube/pkg/utils/errcode" | ||
| "github.com/kubecube-io/kubecube/pkg/utils/filter" | ||
| "github.com/kubecube-io/kubecube/pkg/utils/response" | ||
| v1 "k8s.io/api/core/v1" | ||
| ) | ||
|
|
||
| // NOTE: This file is copied from k8s.io/kubernetes/dashboard/src/app/backend/resource/container/logs.go. | ||
| // We have expanded some function and delete some we did not use, such as HandleLogs. | ||
|
|
||
| type ProxyPodLog struct { | ||
| ctx context.Context | ||
| client client.Client | ||
| namespace string | ||
| filterCondition *filter.Condition | ||
| } | ||
|
|
||
| func NewProxyPodLog(client client.Client, namespace string, condition *filter.Condition) ProxyPodLog { | ||
| ctx := context.Background() | ||
| return ProxyPodLog{ | ||
| ctx: ctx, | ||
| client: client, | ||
| namespace: namespace, | ||
| filterCondition: condition, | ||
| } | ||
| } | ||
|
|
||
| // HandleLogs @router /api/v1/namespaces/{namespace}/proxy/pods/{resourceName}/log [get] | ||
| // resourceName: pod name, required | ||
| // namespace: pod namespace, required | ||
| // container: container name, required | ||
| // tailLines: tail lines, required | ||
| // timestamps: show timestamps or not, optional | ||
| // limitBytes: limit bytes, required | ||
| // sinceSeconds: since seconds, optional | ||
| // follow: follow or not, optional | ||
| func (podLog *ProxyPodLog) HandleLogs(c *gin.Context) { | ||
| k8sClient := podLog.client.ClientSet() | ||
|
|
||
| namespace := c.Param("namespace") | ||
| pod := c.Param("resourceName") | ||
| container := c.Query("container") | ||
| tailLines := c.Query("tailLines") | ||
| timestamps := c.Query("timestamps") | ||
| limitBytes := c.Query("limitBytes") | ||
| sinceSeconds := c.Query("sinceSeconds") | ||
| follow := c.Query("follow") | ||
|
|
||
| if len(tailLines) == 0 { | ||
| response.FailReturn(c, errcode.ParamsMissing("tailLines")) | ||
| return | ||
| } | ||
| lines, err := strconv.ParseInt(tailLines, 10, 64) | ||
| if err != nil { | ||
| response.FailReturn(c, errcode.ParamsInvalid(err)) | ||
| return | ||
| } | ||
| isTimestamps, _ := strconv.ParseBool(timestamps) | ||
| isFollow, _ := strconv.ParseBool(follow) | ||
| if len(limitBytes) == 0 { | ||
| response.FailReturn(c, errcode.ParamsMissing("limitBytes")) | ||
| return | ||
| } | ||
| limit, err := strconv.ParseInt(limitBytes, 10, 64) | ||
| if err != nil { | ||
| response.FailReturn(c, errcode.ParamsInvalid(err)) | ||
| return | ||
| } | ||
| seconds := int64(0) | ||
| if len(sinceSeconds) > 0 { | ||
| seconds, err = strconv.ParseInt(sinceSeconds, 10, 64) | ||
| if err != nil { | ||
| response.FailReturn(c, errcode.ParamsInvalid(err)) | ||
| return | ||
| } | ||
| } | ||
| logOptions := &v1.PodLogOptions{ | ||
| Container: container, | ||
| Follow: isFollow, | ||
| Timestamps: isTimestamps, | ||
| TailLines: &lines, | ||
| LimitBytes: &limit, | ||
| } | ||
| if seconds > 0 { | ||
| logOptions.SinceSeconds = &seconds | ||
| } | ||
| logStream, err := k8sClient.CoreV1().Pods(namespace).GetLogs(pod, logOptions).Stream(c) | ||
| if err != nil { | ||
| clog.Warn("get log details fail: %v", err) | ||
| response.FailReturn(c, errcode.BadRequest(err)) | ||
| return | ||
| } | ||
| defer func(logStream io.ReadCloser) { | ||
| _ = logStream.Close() | ||
| }(logStream) | ||
| writer := c.Writer | ||
| header := writer.Header() | ||
| header.Set(constants.HttpHeaderTransferEncoding, constants.HttpHeaderChunked) | ||
| header.Set(constants.HttpHeaderContentType, constants.HttpHeaderTextHtml) | ||
| r := bufio.NewReader(logStream) | ||
| for { | ||
| bytes, err := r.ReadBytes('\n') | ||
| if err != nil { | ||
| if errors.Is(err, io.EOF) { | ||
| if isFollow { | ||
| _, err := writer.Write([]byte("EOF")) | ||
| if err != nil { | ||
| response.FailReturn(c, errcode.BadRequest(err)) | ||
| return | ||
| } | ||
| } | ||
| return | ||
| } | ||
| clog.Warn("read log fail: %v", err) | ||
| response.FailReturn(c, errcode.BadRequest(err)) | ||
| return | ||
| } | ||
| _, err = writer.Write(bytes) | ||
| if err != nil { | ||
| clog.Warn("write log fail: %v", err) | ||
| response.FailReturn(c, errcode.BadRequest(err)) | ||
| return | ||
| } | ||
| writer.Flush() | ||
| } | ||
| } |
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