/
handler.go
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/
handler.go
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// Copyright 2020 Antrea 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 recordmetrics
import (
"encoding/json"
"net/http"
"k8s.io/klog/v2"
"antrea.io/antrea/pkg/antctl/transform/common"
"antrea.io/antrea/pkg/flowaggregator/querier"
)
// Response is the response struct of recordmetrics command.
type Response struct {
NumRecordsExported int64 `json:"numRecordsExported,omitempty"`
NumRecordsReceived int64 `json:"numRecordsReceived,omitempty"`
NumFlows int64 `json:"numFlows,omitempty"`
NumConnToCollector int64 `json:"numConnToCollector,omitempty"`
}
// HandleFunc returns the function which can handle the /recordmetrics API request.
func HandleFunc(faq querier.FlowAggregatorQuerier) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
metrics := faq.GetRecordMetrics()
metricsResponse := Response{
NumRecordsExported: metrics.NumRecordsExported,
NumRecordsReceived: metrics.NumRecordsReceived,
NumFlows: metrics.NumFlows,
NumConnToCollector: metrics.NumConnToCollector,
}
err := json.NewEncoder(w).Encode(metricsResponse)
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
klog.Errorf("Error when encoding AntreaAgentInfo to json: %v", err)
}
}
}
func (r Response) GetTableHeader() []string {
return []string{"RECORDS-EXPORTED", "RECORDS-RECEIVED", "FLOWS", "EXPORTERS-CONNECTED"}
}
func (r Response) GetTableRow(maxColumnLength int) []string {
return []string{
common.Int64ToString(r.NumRecordsExported),
common.Int64ToString(r.NumRecordsReceived),
common.Int64ToString(r.NumFlows),
common.Int64ToString(r.NumConnToCollector),
}
}
func (r Response) SortRows() bool {
return true
}