mirror of https://github.com/prometheus/prometheus
329 lines
7.9 KiB
Go
329 lines
7.9 KiB
Go
// Copyright 2016 The Prometheus 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 promql
|
|
|
|
import (
|
|
"fmt"
|
|
"reflect"
|
|
"testing"
|
|
"time"
|
|
|
|
"golang.org/x/net/context"
|
|
|
|
"github.com/prometheus/common/log"
|
|
"github.com/prometheus/prometheus/pkg/labels"
|
|
)
|
|
|
|
func TestQueryConcurrency(t *testing.T) {
|
|
engine := NewEngine(nil, nil)
|
|
ctx, cancelCtx := context.WithCancel(context.Background())
|
|
defer cancelCtx()
|
|
|
|
block := make(chan struct{})
|
|
processing := make(chan struct{})
|
|
|
|
f := func(context.Context) error {
|
|
processing <- struct{}{}
|
|
<-block
|
|
return nil
|
|
}
|
|
|
|
for i := 0; i < DefaultEngineOptions.MaxConcurrentQueries; i++ {
|
|
q := engine.newTestQuery(f)
|
|
go q.Exec(ctx)
|
|
select {
|
|
case <-processing:
|
|
// Expected.
|
|
case <-time.After(20 * time.Millisecond):
|
|
t.Fatalf("Query within concurrency threshold not being executed")
|
|
}
|
|
}
|
|
|
|
q := engine.newTestQuery(f)
|
|
go q.Exec(ctx)
|
|
|
|
select {
|
|
case <-processing:
|
|
t.Fatalf("Query above concurrency threshold being executed")
|
|
case <-time.After(20 * time.Millisecond):
|
|
// Expected.
|
|
}
|
|
|
|
// Terminate a running query.
|
|
block <- struct{}{}
|
|
|
|
select {
|
|
case <-processing:
|
|
// Expected.
|
|
case <-time.After(20 * time.Millisecond):
|
|
t.Fatalf("Query within concurrency threshold not being executed")
|
|
}
|
|
|
|
// Terminate remaining queries.
|
|
for i := 0; i < DefaultEngineOptions.MaxConcurrentQueries; i++ {
|
|
block <- struct{}{}
|
|
}
|
|
}
|
|
|
|
func TestQueryTimeout(t *testing.T) {
|
|
engine := NewEngine(nil, &EngineOptions{
|
|
Timeout: 5 * time.Millisecond,
|
|
MaxConcurrentQueries: 20,
|
|
})
|
|
ctx, cancelCtx := context.WithCancel(context.Background())
|
|
defer cancelCtx()
|
|
|
|
query := engine.newTestQuery(func(ctx context.Context) error {
|
|
time.Sleep(50 * time.Millisecond)
|
|
return contextDone(ctx, "test statement execution")
|
|
})
|
|
|
|
res := query.Exec(ctx)
|
|
if res.Err == nil {
|
|
t.Fatalf("expected timeout error but got none")
|
|
}
|
|
if _, ok := res.Err.(ErrQueryTimeout); res.Err != nil && !ok {
|
|
t.Fatalf("expected timeout error but got: %s", res.Err)
|
|
}
|
|
}
|
|
|
|
func TestQueryCancel(t *testing.T) {
|
|
engine := NewEngine(nil, nil)
|
|
ctx, cancelCtx := context.WithCancel(context.Background())
|
|
defer cancelCtx()
|
|
|
|
// Cancel a running query before it completes.
|
|
block := make(chan struct{})
|
|
processing := make(chan struct{})
|
|
|
|
query1 := engine.newTestQuery(func(ctx context.Context) error {
|
|
processing <- struct{}{}
|
|
<-block
|
|
return contextDone(ctx, "test statement execution")
|
|
})
|
|
|
|
var res *Result
|
|
|
|
go func() {
|
|
res = query1.Exec(ctx)
|
|
processing <- struct{}{}
|
|
}()
|
|
|
|
<-processing
|
|
query1.Cancel()
|
|
block <- struct{}{}
|
|
<-processing
|
|
|
|
if res.Err == nil {
|
|
t.Fatalf("expected cancellation error for query1 but got none")
|
|
}
|
|
if ee := ErrQueryCanceled("test statement execution"); res.Err != ee {
|
|
t.Fatalf("expected error %q, got %q", ee, res.Err)
|
|
}
|
|
|
|
// Canceling a query before starting it must have no effect.
|
|
query2 := engine.newTestQuery(func(ctx context.Context) error {
|
|
return contextDone(ctx, "test statement execution")
|
|
})
|
|
|
|
query2.Cancel()
|
|
res = query2.Exec(ctx)
|
|
if res.Err != nil {
|
|
t.Fatalf("unexpected error on executing query2: %s", res.Err)
|
|
}
|
|
}
|
|
|
|
func TestEngineShutdown(t *testing.T) {
|
|
engine := NewEngine(nil, nil)
|
|
ctx, cancelCtx := context.WithCancel(context.Background())
|
|
|
|
block := make(chan struct{})
|
|
processing := make(chan struct{})
|
|
|
|
// Shutdown engine on first handler execution. Should handler execution ever become
|
|
// concurrent this test has to be adjusted accordingly.
|
|
f := func(ctx context.Context) error {
|
|
processing <- struct{}{}
|
|
<-block
|
|
return contextDone(ctx, "test statement execution")
|
|
}
|
|
query1 := engine.newTestQuery(f)
|
|
|
|
// Stopping the engine must cancel the base context. While executing queries is
|
|
// still possible, their context is canceled from the beginning and execution should
|
|
// terminate immediately.
|
|
|
|
var res *Result
|
|
go func() {
|
|
res = query1.Exec(ctx)
|
|
processing <- struct{}{}
|
|
}()
|
|
|
|
<-processing
|
|
cancelCtx()
|
|
block <- struct{}{}
|
|
<-processing
|
|
|
|
if res.Err == nil {
|
|
t.Fatalf("expected error on shutdown during query but got none")
|
|
}
|
|
if ee := ErrQueryCanceled("test statement execution"); res.Err != ee {
|
|
t.Fatalf("expected error %q, got %q", ee, res.Err)
|
|
}
|
|
|
|
query2 := engine.newTestQuery(func(context.Context) error {
|
|
t.Fatalf("reached query execution unexpectedly")
|
|
return nil
|
|
})
|
|
|
|
// The second query is started after the engine shut down. It must
|
|
// be canceled immediately.
|
|
res2 := query2.Exec(ctx)
|
|
if res2.Err == nil {
|
|
t.Fatalf("expected error on querying with canceled context but got none")
|
|
}
|
|
if _, ok := res2.Err.(ErrQueryCanceled); !ok {
|
|
t.Fatalf("expected cancelation error, got %q", res2.Err)
|
|
}
|
|
}
|
|
|
|
func TestEngineEvalStmtTimestamps(t *testing.T) {
|
|
test, err := NewTest(t, `
|
|
load 10s
|
|
metric 1 2
|
|
`)
|
|
if err != nil {
|
|
t.Fatalf("unexpected error creating test: %q", err)
|
|
}
|
|
err = test.Run()
|
|
if err != nil {
|
|
t.Fatalf("unexpected error initializing test: %q", err)
|
|
}
|
|
|
|
cases := []struct {
|
|
Query string
|
|
Result Value
|
|
Start time.Time
|
|
End time.Time
|
|
Interval time.Duration
|
|
}{
|
|
// Instant queries.
|
|
{
|
|
Query: "1",
|
|
Result: Scalar{V: 1, T: 1000},
|
|
Start: time.Unix(1, 0),
|
|
},
|
|
{
|
|
Query: "metric",
|
|
Result: Vector{
|
|
Sample{Point: Point{V: 1, T: 1000},
|
|
Metric: labels.FromStrings("__name__", "metric")},
|
|
},
|
|
Start: time.Unix(1, 0),
|
|
},
|
|
{
|
|
Query: "metric[20s]",
|
|
Result: Matrix{Series{
|
|
Points: []Point{{V: 1, T: 0}, {V: 2, T: 10000}},
|
|
Metric: labels.FromStrings("__name__", "metric")},
|
|
},
|
|
Start: time.Unix(10, 0),
|
|
},
|
|
// Range queries.
|
|
{
|
|
Query: "1",
|
|
Result: Matrix{Series{
|
|
Points: []Point{{V: 1, T: 0}, {V: 1, T: 1000}, {V: 1, T: 2000}},
|
|
Metric: labels.FromStrings()},
|
|
},
|
|
Start: time.Unix(0, 0),
|
|
End: time.Unix(2, 0),
|
|
Interval: time.Second,
|
|
},
|
|
{
|
|
Query: "metric",
|
|
Result: Matrix{Series{
|
|
Points: []Point{{V: 1, T: 0}, {V: 1, T: 1000}, {V: 1, T: 2000}},
|
|
Metric: labels.FromStrings("__name__", "metric")},
|
|
},
|
|
Start: time.Unix(0, 0),
|
|
End: time.Unix(2, 0),
|
|
Interval: time.Second,
|
|
},
|
|
{
|
|
Query: "metric",
|
|
Result: Matrix{Series{
|
|
Points: []Point{{V: 1, T: 0}, {V: 1, T: 5000}, {V: 2, T: 10000}},
|
|
Metric: labels.FromStrings("__name__", "metric")},
|
|
},
|
|
Start: time.Unix(0, 0),
|
|
End: time.Unix(10, 0),
|
|
Interval: 5 * time.Second,
|
|
},
|
|
}
|
|
|
|
for _, c := range cases {
|
|
var err error
|
|
var qry Query
|
|
if c.Interval == 0 {
|
|
qry, err = test.QueryEngine().NewInstantQuery(c.Query, c.Start)
|
|
} else {
|
|
qry, err = test.QueryEngine().NewRangeQuery(c.Query, c.Start, c.End, c.Interval)
|
|
}
|
|
if err != nil {
|
|
t.Fatalf("unexpected error creating query: %q", err)
|
|
}
|
|
res := qry.Exec(test.Context())
|
|
if res.Err != nil {
|
|
t.Fatalf("unexpected error running query: %q", res.Err)
|
|
}
|
|
if !reflect.DeepEqual(res.Value, c.Result) {
|
|
t.Fatalf("unexpected result for query %q: got %q wanted %q", c.Query, res.Value.String(), c.Result.String())
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
func TestRecoverEvaluatorRuntime(t *testing.T) {
|
|
ev := &evaluator{
|
|
logger: log.Base(),
|
|
}
|
|
var err error
|
|
defer ev.recover(&err)
|
|
|
|
// Cause a runtime panic.
|
|
var a []int
|
|
a[123] = 1
|
|
|
|
if err.Error() != "unexpected error" {
|
|
t.Fatalf("wrong error message: %q, expected %q", err, "unexpected error")
|
|
}
|
|
}
|
|
|
|
func TestRecoverEvaluatorError(t *testing.T) {
|
|
ev := &evaluator{logger: log.Base()}
|
|
var err error
|
|
|
|
e := fmt.Errorf("custom error")
|
|
|
|
defer func() {
|
|
if err.Error() != e.Error() {
|
|
t.Fatalf("wrong error message: %q, expected %q", err, e)
|
|
}
|
|
}()
|
|
defer ev.recover(&err)
|
|
|
|
panic(e)
|
|
}
|