Move packages to proejct/pkg to follow go project folder structure convention (#1190)

pkg/fission-cli/logdb/logdb.go

@@ -0,0 +1,58 @@
+/*
+Copyright 2016 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 logdb
+
+import (
+	"fmt"
+	"time"
+)
+
+const (
+	INFLUXDB = "influxdb"
+)
+
+type LogDatabase interface {
+	GetLogs(LogFilter) ([]LogEntry, error)
+}
+
+type LogFilter struct {
+	Pod         string
+	Function    string
+	FuncUid     string
+	Since       time.Time
+	RecordLimit int
+}
+
+type LogEntry struct {
+	Timestamp time.Time
+	Message   string
+	Stream    string
+	Sequence  int
+	Container string
+	Namespace string
+	FuncName  string
+	FuncUid   string
+	Pod       string
+}
+
+func GetLogDB(dbType string, serverURL string) (LogDatabase, error) {
+	switch dbType {
+	case INFLUXDB:
+		return NewInfluxDB(serverURL)
+	}
+	return nil, fmt.Errorf("log database type is incorrect, now only support %s", INFLUXDB)
+}