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Allow targets to be injected as arguments when creating a testTargetRetriever

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Previously, the struct `testTargetRetriever` had hardcoded active and dropped targets. This made it difficult to change the target information depending on the test case.

This change introduces a way to define them as arguments and pass it to a constructor for building. It lays a foundation for dynamically defining targets with various set of arguments to test different scenarios.

Signed-off-by: gotjosh <josue@grafana.com>
This commit is contained in:
gotjosh 2019-12-04 11:08:21 +00:00
parent c8665eaee3
commit 4bf9c6bb82
1 changed files with 136 additions and 43 deletions
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179
web/api/v1/api_test.go
View file

@ -55,55 +55,62 @@ import (
"github.com/prometheus/prometheus/util/testutil"
)
type testTargetRetriever struct{}
type testTargetRetriever struct {
activeTargets map[string][]*scrape.Target
droppedTargets map[string][]*scrape.Target
}
type testTargetParams struct {
Identifier string
Labels []labels.Label
DiscoveredLabels []labels.Label
Params url.Values
Reports []*testReport
Active bool
}
type testReport struct {
Start time.Time
Duration time.Duration
Error error
}
func newTestTargetRetriever(targetsInfo []*testTargetParams) *testTargetRetriever {
var activeTargets map[string][]*scrape.Target
var droppedTargets map[string][]*scrape.Target
activeTargets = make(map[string][]*scrape.Target)
droppedTargets = make(map[string][]*scrape.Target)
for _, t := range targetsInfo {
nt := scrape.NewTarget(t.Labels, t.DiscoveredLabels, t.Params)
for _, r := range t.Reports {
nt.Report(r.Start, r.Duration, r.Error)
}
if t.Active {
activeTargets[t.Identifier] = []*scrape.Target{nt}
} else {
droppedTargets[t.Identifier] = []*scrape.Target{nt}
}
}
return &testTargetRetriever{
activeTargets: activeTargets,
droppedTargets: droppedTargets,
}
}
var (
scrapeStart = time.Now().Add(-11 * time.Second)
)
func (t testTargetRetriever) TargetsActive() map[string][]*scrape.Target {
testTarget := scrape.NewTarget(
labels.FromMap(map[string]string{
model.SchemeLabel: "http",
model.AddressLabel: "example.com:8080",
model.MetricsPathLabel: "/metrics",
model.JobLabel: "test",
}),
nil,
url.Values{},
)
testTarget.Report(scrapeStart, 70*time.Millisecond, nil)
blackboxTarget := scrape.NewTarget(
labels.FromMap(map[string]string{
model.SchemeLabel: "http",
model.AddressLabel: "localhost:9115",
model.MetricsPathLabel: "/probe",
model.JobLabel: "blackbox",
}),
nil,
url.Values{"target": []string{"example.com"}},
)
blackboxTarget.Report(scrapeStart, 100*time.Millisecond, errors.New("failed"))
return map[string][]*scrape.Target{
"test": {testTarget},
"blackbox": {blackboxTarget},
}
return t.activeTargets
}
func (t testTargetRetriever) TargetsDropped() map[string][]*scrape.Target {
return map[string][]*scrape.Target{
"blackbox": {
scrape.NewTarget(
nil,
labels.FromMap(map[string]string{
model.AddressLabel: "http://dropped.example.com:9115",
model.MetricsPathLabel: "/probe",
model.SchemeLabel: "http",
model.JobLabel: "blackbox",
}),
url.Values{},
),
},
}
return t.droppedTargets
}
type testAlertmanagerRetriever struct{}
@ -243,10 +250,53 @@ func TestEndpoints(t *testing.T) {
algr.RuleGroups()
targets := []*testTargetParams{
{
Identifier: "test",
Labels: labels.FromMap(map[string]string{
model.SchemeLabel: "http",
model.AddressLabel: "example.com:8080",
model.MetricsPathLabel: "/metrics",
model.JobLabel: "test",
}),
DiscoveredLabels: nil,
Params: url.Values{},
Reports: []*testReport{{scrapeStart, 70 * time.Millisecond, nil}},
Active: true,
},
{
Identifier: "blackbox",
Labels: labels.FromMap(map[string]string{
model.SchemeLabel: "http",
model.AddressLabel: "localhost:9115",
model.MetricsPathLabel: "/probe",
model.JobLabel: "blackbox",
}),
DiscoveredLabels: nil,
Params: url.Values{"target": []string{"example.com"}},
Reports: []*testReport{{scrapeStart, 100 * time.Millisecond, errors.New("failed")}},
Active: true,
},
{
Identifier: "blackbox",
Labels: nil,
DiscoveredLabels: labels.FromMap(map[string]string{
model.SchemeLabel: "http",
model.AddressLabel: "http://dropped.example.com:9115",
model.MetricsPathLabel: "/probe",
model.JobLabel: "blackbox",
}),
Params: url.Values{},
Active: false,
},
}
testTargetRetriever := newTestTargetRetriever(targets)
api := &API{
Queryable: suite.Storage(),
QueryEngine: suite.QueryEngine(),
targetRetriever: testTargetRetriever{},
targetRetriever: testTargetRetriever,
alertmanagerRetriever: testAlertmanagerRetriever{},
flagsMap: sampleFlagMap,
now: func() time.Time { return now },
@ -305,10 +355,53 @@ func TestEndpoints(t *testing.T) {
algr.RuleGroups()
targets := []*testTargetParams{
{
Identifier: "test",
Labels: labels.FromMap(map[string]string{
model.SchemeLabel: "http",
model.AddressLabel: "example.com:8080",
model.MetricsPathLabel: "/metrics",
model.JobLabel: "test",
}),
DiscoveredLabels: nil,
Params: url.Values{},
Reports: []*testReport{{scrapeStart, 70 * time.Millisecond, nil}},
Active: true,
},
{
Identifier: "blackbox",
Labels: labels.FromMap(map[string]string{
model.SchemeLabel: "http",
model.AddressLabel: "localhost:9115",
model.MetricsPathLabel: "/probe",
model.JobLabel: "blackbox",
}),
DiscoveredLabels: nil,
Params: url.Values{"target": []string{"example.com"}},
Reports: []*testReport{{scrapeStart, 100 * time.Millisecond, errors.New("failed")}},
Active: true,
},
{
Identifier: "blackbox",
Labels: nil,
DiscoveredLabels: labels.FromMap(map[string]string{
model.SchemeLabel: "http",
model.AddressLabel: "http://dropped.example.com:9115",
model.MetricsPathLabel: "/probe",
model.JobLabel: "blackbox",
}),
Params: url.Values{},
Active: false,
},
}
testTargetRetriever := newTestTargetRetriever(targets)
api := &API{
Queryable: remote,
QueryEngine: suite.QueryEngine(),
targetRetriever: testTargetRetriever{},
targetRetriever: testTargetRetriever,
alertmanagerRetriever: testAlertmanagerRetriever{},
flagsMap: sampleFlagMap,
now: func() time.Time { return now },