Finish the journald support

pkg/kernelmonitor/config.go

@@ -0,0 +1,49 @@
+/*
+Copyright 2016 The Kubernetes Authors All rights reserved.
+
+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 kernelmonitor
+
+import (
+	watchertypes "k8s.io/node-problem-detector/pkg/kernelmonitor/logwatchers/types"
+	kerntypes "k8s.io/node-problem-detector/pkg/kernelmonitor/types"
+	"k8s.io/node-problem-detector/pkg/types"
+)
+
+// MonitorConfig is the configuration of kernel monitor.
+type MonitorConfig struct {
+	// WatcherConfig is the configuration of kernel log watcher.
+	watchertypes.WatcherConfig
+	// BufferSize is the size (in lines) of the log buffer.
+	BufferSize int `json:"bufferSize"`
+	// Source is the source name of the kernel monitor
+	Source string `json:"source"`
+	// DefaultConditions are the default states of all the conditions kernel monitor should handle.
+	DefaultConditions []types.Condition `json:"conditions"`
+	// Rules are the rules kernel monitor will follow to parse the log file.
+	Rules []kerntypes.Rule `json:"rules"`
+	// StartPattern is the pattern of the start line
+	StartPattern string `json:"startPattern, omitempty"`
+}
+
+// applyDefaultConfiguration applies default configurations.
+func applyDefaultConfiguration(cfg *MonitorConfig) {
+	if cfg.BufferSize == 0 {
+		cfg.BufferSize = 10
+	}
+	if cfg.WatcherConfig.Lookback == "" {
+		cfg.WatcherConfig.Lookback = "0"
+	}
+}