Ta-Ching ChenandGitHub
93d4b88d84
Before this PR, CLI functions fatal out when encountering error instead of returning it. Such behavior makes it hard to reuse the functions nor writing unit tests. This PR aims to make functions return errors instead of error out.
135 lines
3.2 KiB
Go
135 lines
3.2 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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"time"
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"github.com/pkg/errors"
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"github.com/fission/fission/pkg/controller/client"
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"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
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"github.com/fission/fission/pkg/fission-cli/logdb"
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"github.com/fission/fission/pkg/fission-cli/util"
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)
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type LogSubCommand struct {
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client *client.Client
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}
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func Log(flags cli.Input) error {
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c, err := util.GetServer(flags)
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if err != nil {
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return err
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}
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opts := LogSubCommand{
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client: c,
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}
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return opts.do(flags)
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}
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func (opts *LogSubCommand) do(flags cli.Input) error {
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m, err := util.GetMetadata("name", "fnNamespace", flags)
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if err != nil {
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return err
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}
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dbType := flags.String("dbtype")
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if len(dbType) == 0 {
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dbType = logdb.INFLUXDB
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}
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fnPod := flags.String("pod")
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logReverseQuery := !flags.Bool("f") && flags.Bool("r")
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recordLimit := flags.Int("recordcount")
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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.FunctionGet(m)
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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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server, err := util.GetApplicationUrl("application=fission-api")
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if err != nil {
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return err
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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, server)
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if err != nil {
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return errors.New("failed to connect 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 := context.Background()
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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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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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Function: f.Metadata.Name,
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FuncUid: string(f.Metadata.UID),
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Since: t,
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Reverse: logReverseQuery,
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RecordLimit: recordLimit,
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}
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logEntries, err := logDB.GetLogs(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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for _, logEntry := range logEntries {
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if flags.Bool("d") {
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fmt.Printf("Timestamp: %s\nNamespace: %s\nFunction Name: %s\nFunction ID: %s\nPod: %s\nContainer: %s\nStream: %s\nLog: %s\n---\n",
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logEntry.Timestamp, logEntry.Namespace, logEntry.FuncName, logEntry.FuncUid, logEntry.Pod, logEntry.Container, logEntry.Stream, logEntry.Message)
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} else {
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fmt.Printf("[%s] %s\n", logEntry.Timestamp, logEntry.Message)
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}
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t = logEntry.Timestamp
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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 !flags.Bool("f") {
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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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