/
provider.go
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/
provider.go
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// Copyright (c) 2021 Terminus, Inc.
//
// This program is free software: you can use, redistribute, and/or modify
// it under the terms of the GNU Affero General Public License, version 3
// or later ("AGPL"), as published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package example
import (
"context"
"fmt"
"github.com/recallsong/go-utils/encoding/jsonx"
"google.golang.org/protobuf/types/known/structpb"
"github.com/erda-project/erda-infra/base/logs"
"github.com/erda-project/erda-infra/base/servicehub"
"github.com/erda-project/erda-proto-go/core/monitor/metric/pb"
indexmanager "github.com/erda-project/erda/modules/core/monitor/metric/index"
)
type provider struct {
Log logs.Logger
Index indexmanager.Index `autowired:"erda.core.monitor.metric.index"`
Meta pb.MetricMetaServiceServer `autowired:"erda.core.monitor.metric.MetricMetaService"`
Metric pb.MetricServiceServer `autowired:"erda.core.monitor.metric.MetricService"`
}
func (p *provider) Init(ctx servicehub.Context) error { return nil }
func (p *provider) Run(ctx context.Context) error {
p.Index.WaitIndicesLoad() // example query can be carried out after the index is loaded
return p.queryExample(ctx)
}
func (p *provider) queryExample(ctx context.Context) error {
req := &pb.QueryWithInfluxFormatRequest{
Start: "before_1h", // or timestamp
End: "now", // or timestamp
Statement: `SELECT host_ip::tag, mem_used::field FROM host_summary WHERE cluster_name::tag=$cluster_name GROUP BY host_ip::tag`,
Params: map[string]*structpb.Value{
"cluster_name": structpb.NewStringValue("terminus-dev"),
},
}
resp, err := p.Metric.QueryWithInfluxFormat(ctx, req)
if err != nil {
return err
}
fmt.Println(jsonx.MarshalAndIndent(resp))
return nil
}
func init() {
servicehub.Register("metric-query-example", &servicehub.Spec{
Creator: func() servicehub.Provider {
return &provider{}
},
})
}