Refactor function command (#1372)

2019-11-03 13:31:47 +08:00
parent 8f6887280c
commit 3b6749dce9
14 changed files with 1542 additions and 998 deletions
@@ -0,0 +1,126 @@
+/*
+Copyright 2019 The Fission 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 function
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/pkg/errors"
+
+	"github.com/fission/fission/pkg/controller/client"
+	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
+	"github.com/fission/fission/pkg/fission-cli/cmd"
+	"github.com/fission/fission/pkg/fission-cli/logdb"
+	"github.com/fission/fission/pkg/fission-cli/util"
+)
+
+type LogSubCommand struct {
+	client *client.Client
+}
+
+func Log(flags cli.Input) error {
+	opts := LogSubCommand{
+		client: cmd.GetServer(flags),
+	}
+	return opts.do(flags)
+}
+
+func (opts *LogSubCommand) do(flags cli.Input) error {
+	m, err := cmd.GetMetadata("name", "fnNamespace", flags)
+	if err != nil {
+		return err
+	}
+
+	dbType := flags.String("dbtype")
+	if len(dbType) == 0 {
+		dbType = logdb.INFLUXDB
+	}
+
+	fnPod := flags.String("pod")
+
+	logReverseQuery := !flags.Bool("f") && flags.Bool("r")
+
+	recordLimit := flags.Int("recordcount")
+	if recordLimit <= 0 {
+		recordLimit = 1000
+	}
+
+	f, err := opts.client.FunctionGet(m)
+	if err != nil {
+		return errors.Wrap(err, "error getting function")
+	}
+
+	// request the controller to establish a proxy server to the database.
+	logDB, err := logdb.GetLogDB(dbType, util.GetServerUrl())
+	if err != nil {
+		return errors.New("failed to connect log database")
+	}
+
+	requestChan := make(chan struct{})
+	responseChan := make(chan struct{})
+	ctx := context.Background()
+
+	go func(ctx context.Context, requestChan, responseChan chan struct{}) {
+		t := time.Unix(0, 0*int64(time.Millisecond))
+		for {
+			select {
+			case <-requestChan:
+				logFilter := logdb.LogFilter{
+					Pod:         fnPod,
+					Function:    f.Metadata.Name,
+					FuncUid:     string(f.Metadata.UID),
+					Since:       t,
+					Reverse:     logReverseQuery,
+					RecordLimit: recordLimit,
+				}
+				logEntries, err := logDB.GetLogs(logFilter)
+				if err != nil {
+					fmt.Printf("Error querying logs: %v", err)
+					responseChan <- struct{}{}
+					return
+				}
+				for _, logEntry := range logEntries {
+					if flags.Bool("d") {
+						fmt.Printf("Timestamp: %s\nNamespace: %s\nFunction Name: %s\nFunction ID: %s\nPod: %s\nContainer: %s\nStream: %s\nLog: %s\n---\n",
+							logEntry.Timestamp, logEntry.Namespace, logEntry.FuncName, logEntry.FuncUid, logEntry.Pod, logEntry.Container, logEntry.Stream, logEntry.Message)
+					} else {
+						fmt.Printf("[%s] %s\n", logEntry.Timestamp, logEntry.Message)
+					}
+					t = logEntry.Timestamp
+				}
+				responseChan <- struct{}{}
+			case <-ctx.Done():
+				return
+			}
+		}
+	}(ctx, requestChan, responseChan)
+
+	for {
+		requestChan <- struct{}{}
+		time.Sleep(1 * time.Second)
+
+		<-responseChan
+		if !flags.Bool("f") {
+			ctx.Done()
+			break
+		}
+	}
+
+	return nil
+}