/
prometheus.go
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/
prometheus.go
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// Copyright Istio 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 prometheus
import (
v1 "github.com/prometheus/client_golang/api/prometheus/v1"
prom "github.com/prometheus/common/model"
"istio.io/istio/pkg/test"
"istio.io/istio/pkg/test/framework/components/cluster"
"istio.io/istio/pkg/test/framework/resource"
)
type Instance interface {
resource.Resource
// API Returns the core Prometheus APIs.
API() v1.API
APIForCluster(cluster cluster.Cluster) v1.API
// Query run the provided PromQL against the given cluster
RawQuery(cluster cluster.Cluster, promQL string) (prom.Value, error)
// Query Run the provided query against the given cluster
Query(cluster cluster.Cluster, query Query) (prom.Value, error)
// QuerySum is a help around Query to compute the sum
QuerySum(cluster cluster.Cluster, query Query) (float64, error)
}
type Config struct {
// If true, connect to an existing prometheus rather than creating a new one
SkipDeploy bool
}
// New returns a new instance of prometheus.
func New(ctx resource.Context, c Config) (i Instance, err error) {
return newKube(ctx, c)
}
// NewOrFail returns a new Prometheus instance or fails test.
func NewOrFail(t test.Failer, ctx resource.Context, c Config) Instance {
t.Helper()
i, err := New(ctx, c)
if err != nil {
t.Fatalf("prometheus.NewOrFail: %v", err)
}
return i
}