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routes.go
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routes.go
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// Copyright (c) 2021 Terminus, Inc.
//
// 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 nodetopo
import (
"fmt"
"time"
"github.com/olivere/elastic"
"github.com/recallsong/go-utils/encoding/jsonx"
"github.com/erda-project/erda-infra/providers/httpserver"
api "github.com/erda-project/erda/pkg/common/httpapi"
)
func (p *provider) intRoutes(routes httpserver.Router) error {
routes.GET("/api/node/topology", p.getNodeTopology)
return nil
}
const maxSize = 5000
// TopoMetrics .
type TopoMetrics struct {
Bytes int64 `json:"bytes"`
Packets int64 `json:"packets"`
TCPBytes int64 `json:"tcp_bytes"`
UDPBytes int64 `json:"udp_bytes"`
TCPPackets int64 `json:"tcp_packets"`
UDPPackets int64 `json:"udp_packets"`
}
// Node .
type Node struct {
Name string `json:"name"`
Metrics TopoMetrics `json:"metrics"`
}
// Line .
type Line struct {
Source string `json:"source"`
Target string `json:"target"`
Metrics TopoMetrics `json:"metrics"`
}
// TopoResponse .
type TopoResponse struct {
Nodes []*Node `json:"nodes"`
Links []*Line `json:"links"`
}
func (p *provider) getNodeTopology(param struct {
Start int64 `query:"start"`
End int64 `query:"end"`
ClusterName string `query:"clusterName"`
}) interface{} {
if len(param.ClusterName) <= 0 {
return api.Errors.InvalidParameter("clusterName must not be empty")
}
if param.End <= 0 {
param.End = time.Now().UnixNano() / int64(time.Millisecond)
}
// filter
query := elastic.NewBoolQuery().
Filter(elastic.NewTermQuery("tags.cluster_name", param.ClusterName)).
Filter(elastic.NewRangeQuery("timestamp").Gte(param.Start * int64(time.Millisecond)).Lte(param.End * int64(time.Millisecond)))
// agg
searchSource := elastic.NewSearchSource().Query(query).Size(0)
src := elastic.NewTermsAggregation().Field("tags.src").Size(maxSize)
dst := elastic.NewTermsAggregation().Field("tags.dst").Size(maxSize)
src.SubAggregation("dst", dst)
searchSource.Aggregation("src", src)
// fields agg
dst.SubAggregation("bytes", elastic.NewSumAggregation().Field("fields.bytes"))
dst.SubAggregation("packets", elastic.NewSumAggregation().Field("fields.packets"))
dst.SubAggregation("tcp_bytes", elastic.NewSumAggregation().Field("fields.tcp_bytes"))
dst.SubAggregation("tcp_packets", elastic.NewSumAggregation().Field("fields.tcp_packets"))
dst.SubAggregation("udp_bytes", elastic.NewSumAggregation().Field("fields.udp_bytes"))
dst.SubAggregation("udp_packets", elastic.NewSumAggregation().Field("fields.udp_packets"))
src.SubAggregation("bytes", elastic.NewSumAggregation().Field("fields.bytes"))
src.SubAggregation("packets", elastic.NewSumAggregation().Field("fields.packets"))
src.SubAggregation("tcp_bytes", elastic.NewSumAggregation().Field("fields.tcp_bytes"))
src.SubAggregation("tcp_packets", elastic.NewSumAggregation().Field("fields.tcp_packets"))
src.SubAggregation("udp_bytes", elastic.NewSumAggregation().Field("fields.udp_bytes"))
src.SubAggregation("udp_packets", elastic.NewSumAggregation().Field("fields.udp_packets"))
// request
indices := p.metricq.Indices([]string{"net_packets"}, []string{param.ClusterName}, param.Start, param.End)
resp, err := p.esRequest(indices, searchSource)
if err != nil {
return api.Errors.Internal(err)
}
result := &TopoResponse{}
if resp == nil || resp.Aggregations == nil {
return api.Success(result)
}
srcTerms, ok := resp.Aggregations.Terms("src")
if !ok {
return api.Success(result)
}
nodes := make(map[string]*Node)
for _, srcb := range srcTerms.Buckets {
if srcb.Key == nil {
continue
}
src := fmt.Sprint(srcb.Key)
snode, ok := nodes[src]
if !ok {
snode = &Node{
Name: src,
}
nodes[src] = snode
}
p.parseTopoMetrics(srcb.Aggregations, &snode.Metrics)
dstTerms, ok := srcb.Aggregations.Terms("dst")
if !ok {
continue
}
for _, dstb := range dstTerms.Buckets {
if dstb.Key == nil {
continue
}
dst := fmt.Sprint(dstb.Key)
dnode, ok := nodes[dst]
if !ok {
dnode = &Node{
Name: dst,
}
nodes[dst] = dnode
}
line := &Line{
Source: src,
Target: dst,
}
result.Links = append(result.Links, line)
p.parseTopoMetrics(dstb.Aggregations, &line.Metrics)
p.parseTopoMetrics(dstb.Aggregations, &dnode.Metrics)
}
}
for _, n := range nodes {
result.Nodes = append(result.Nodes, n)
}
return api.Success(result)
}
func (p *provider) parseTopoMetrics(aggs elastic.Aggregations, m *TopoMetrics) {
m.Bytes += getSumAggMetricValue(aggs, "bytes")
m.Packets += getSumAggMetricValue(aggs, "packets")
m.TCPBytes += getSumAggMetricValue(aggs, "tcp_bytes")
m.TCPPackets += getSumAggMetricValue(aggs, "tcp_packets")
m.UDPBytes += getSumAggMetricValue(aggs, "udp_bytes")
m.UDPPackets += getSumAggMetricValue(aggs, "udp_packets")
}
func getSumAggMetricValue(aggs elastic.Aggregations, key string) int64 {
sum, ok := aggs.Sum(key)
if !ok || sum.Value == nil {
return int64(0)
}
return int64(*sum.Value)
}
func (p *provider) esRequest(indices []string, searchSource *elastic.SearchSource) (*elastic.SearchResult, error) {
resp, err := p.metricq.SearchRaw(indices, searchSource)
if err != nil || (resp != nil && resp.Error != nil) {
if resp != nil {
if resp.Status == 404 {
return nil, nil
}
if resp.Error != nil {
return nil, fmt.Errorf("fail to request storage: %s", jsonx.MarshalAndIndent(resp.Error))
}
}
return nil, fmt.Errorf("fail to request storage: %s", err)
}
return resp, nil
}