add a es client for auditing, events, and logging

Signed-off-by: wanjunlei <wanjunlei@yunify.com>

pkg/simple/client/events/options.go

@@ -0,0 +1,62 @@
+/*
+Copyright 2020 KubeSphere 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 events
+
+import (
+	"github.com/spf13/pflag"
+	"kubesphere.io/kubesphere/pkg/utils/reflectutils"
+)
+
+type Options struct {
+	Host        string `json:"host" yaml:"host"`
+	IndexPrefix string `json:"indexPrefix,omitempty" yaml:"indexPrefix"`
+	Version     string `json:"version" yaml:"version"`
+}
+
+func NewEventsOptions() *Options {
+	return &Options{
+		Host:        "",
+		IndexPrefix: "ks-logstash-events",
+		Version:     "",
+	}
+}
+
+func (s *Options) ApplyTo(options *Options) {
+	if s.Host != "" {
+		reflectutils.Override(options, s)
+	}
+}
+
+func (s *Options) Validate() []error {
+	errs := make([]error, 0)
+
+	return errs
+}
+
+func (s *Options) AddFlags(fs *pflag.FlagSet, c *Options) {
+	fs.StringVar(&s.Host, "events-elasticsearch-host", c.Host, ""+
+		"Elasticsearch service host. KubeSphere is using elastic as event store, "+
+		"if this filed left blank, KubeSphere will use kubernetes builtin event API instead, and"+
+		" the following elastic search options will be ignored.")
+
+	fs.StringVar(&s.IndexPrefix, "events-index-prefix", c.IndexPrefix, ""+
+		"Index name prefix. KubeSphere will retrieve events against indices matching the prefix.")
+
+	fs.StringVar(&s.Version, "events-elasticsearch-version", c.Version, ""+
+		"Elasticsearch major version, e.g. 5/6/7, if left blank, will detect automatically."+
+		"Currently, minimum supported version is 5.x")
+}