neha_guptaandGitHub
4cbe6a7061
* add controller enablement flag * throw an error if service not found * add logs from Kubernetes in function log command * pass context in function param * add pod-namespace in function log command * pass context in function param * search for the pod in fn ns in the test
131 lines
3.4 KiB
Go
131 lines
3.4 KiB
Go
/*
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Copyright 2019 The Fission Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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 function
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import (
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"context"
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"fmt"
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"io"
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"os"
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"time"
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"github.com/pkg/errors"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
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"github.com/fission/fission/pkg/fission-cli/cmd"
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flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
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"github.com/fission/fission/pkg/fission-cli/logdb"
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)
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type LogSubCommand struct {
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cmd.CommandActioner
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}
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func Log(input cli.Input) error {
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return (&LogSubCommand{}).do(input)
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}
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func (opts *LogSubCommand) do(input cli.Input) error {
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_, namespace, err := opts.GetResourceNamespace(input, flagkey.NamespaceFunction)
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if err != nil {
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return errors.Wrap(err, "error in logs for function ")
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}
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dbType := input.String(flagkey.FnLogDBType)
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fnPod := input.String(flagkey.FnLogPod)
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logReverseQuery := !input.Bool(flagkey.FnLogFollow) && input.Bool(flagkey.FnLogReverseQuery)
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recordLimit := input.Int(flagkey.FnLogCount)
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if recordLimit <= 0 {
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recordLimit = 1000
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}
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f, err := opts.Client().FissionClientSet.CoreV1().Functions(namespace).Get(input.Context(), input.String(flagkey.FnName), metav1.GetOptions{})
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if err != nil {
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return errors.Wrap(err, "error getting function")
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}
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logDBOptions := logdb.LogDBOptions{
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Client: opts.Client(),
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}
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// request the controller to establish a proxy server to the database.
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logDB, err := logdb.GetLogDB(dbType, input.Context(), logDBOptions)
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if err != nil {
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return errors.Wrapf(err, "failed to get log database")
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}
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requestChan := make(chan struct{})
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responseChan := make(chan struct{})
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ctx := input.Context()
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go func(ctx context.Context, requestChan, responseChan chan struct{}) {
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t := time.Unix(0, 0*int64(time.Millisecond))
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detail := input.Bool(flagkey.FnLogDetail)
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for {
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select {
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case <-requestChan:
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logFilter := logdb.LogFilter{
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Pod: fnPod,
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PodNamespace: input.String(flagkey.NamespacePod),
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Function: f.ObjectMeta.Name,
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FuncUid: string(f.ObjectMeta.UID),
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Since: t,
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Reverse: logReverseQuery,
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RecordLimit: recordLimit,
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FunctionObject: f,
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Details: detail,
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}
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buf, err := logDB.GetLogs(ctx, logFilter)
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if err != nil {
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fmt.Printf("Error querying logs: %v", err)
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responseChan <- struct{}{}
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return
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}
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_, err = io.Copy(os.Stdout, buf)
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if err != nil {
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return
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}
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t = time.Now().UTC() // next time fetch values from this time
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if dbType == logdb.KUBERNETES { //in case of Kubernetes log we print pods info only once. And then print new logs
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detail = false
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}
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responseChan <- struct{}{}
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case <-ctx.Done():
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return
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}
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}
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}(ctx, requestChan, responseChan)
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for {
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requestChan <- struct{}{}
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time.Sleep(1 * time.Second)
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<-responseChan
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if !input.Bool(flagkey.FnLogFollow) {
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ctx.Done()
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break
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}
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}
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return nil
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}
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