/
alert_test.go
140 lines (113 loc) · 4.37 KB
/
alert_test.go
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package alert
import (
"context"
"net/http"
"net/http/httptest"
"net/url"
"sync"
"testing"
"time"
"github.com/pkg/errors"
"github.com/prometheus/prometheus/pkg/labels"
promtestutil "github.com/prometheus/client_golang/prometheus/testutil"
"github.com/thanos-io/thanos/pkg/testutil"
)
func TestQueue_Push_Relabelled(t *testing.T) {
q := NewQueue(
nil, nil, 10, 10,
labels.FromStrings("a", "1", "replica", "A"), // Labels to be added.
[]string{"b", "replica"}, // Labels to be dropped (excluding those added).
)
q.Push([]*Alert{
{Labels: labels.FromStrings("b", "2", "c", "3")},
{Labels: labels.FromStrings("c", "3")},
{Labels: labels.FromStrings("a", "2")},
})
testutil.Equals(t, 3, len(q.queue))
testutil.Equals(t, labels.FromStrings("a", "1", "c", "3"), q.queue[0].Labels)
testutil.Equals(t, labels.FromStrings("a", "1", "c", "3"), q.queue[1].Labels)
testutil.Equals(t, labels.FromStrings("a", "1"), q.queue[2].Labels)
}
func assertSameHosts(t *testing.T, expected []*url.URL, found []*url.URL) {
testutil.Equals(t, len(expected), len(found))
host := map[string]struct{}{}
for _, u := range expected {
host[u.Host] = struct{}{}
}
for _, u := range found {
_, ok := host[u.Host]
testutil.Assert(t, ok, "host %s not found in expected URL list %v", u.Host, expected)
}
}
type fakeClient struct {
urls []*url.URL
dof func(u *url.URL) (*http.Response, error)
mtx sync.Mutex
seen []*url.URL
}
func (f *fakeClient) Endpoints() []*url.URL {
return f.urls
}
func (f *fakeClient) Do(req *http.Request) (*http.Response, error) {
f.mtx.Lock()
defer f.mtx.Unlock()
u := req.URL
f.seen = append(f.seen, u)
if f.dof == nil {
rec := httptest.NewRecorder()
rec.WriteHeader(http.StatusOK)
return rec.Result(), nil
}
return f.dof(u)
}
func TestSenderSendsOk(t *testing.T) {
poster := &fakeClient{
urls: []*url.URL{{Host: "am1:9090"}, {Host: "am2:9090"}},
}
s := NewSender(nil, nil, []*Alertmanager{NewAlertmanager(nil, poster, time.Minute, APIv1)})
s.Send(context.Background(), []*Alert{{}, {}})
assertSameHosts(t, poster.urls, poster.seen)
testutil.Equals(t, 2, int(promtestutil.ToFloat64(s.sent.WithLabelValues(poster.urls[0].Host))))
testutil.Equals(t, 0, int(promtestutil.ToFloat64(s.errs.WithLabelValues(poster.urls[0].Host))))
testutil.Equals(t, 2, int(promtestutil.ToFloat64(s.sent.WithLabelValues(poster.urls[1].Host))))
testutil.Equals(t, 0, int(promtestutil.ToFloat64(s.errs.WithLabelValues(poster.urls[1].Host))))
testutil.Equals(t, 0, int(promtestutil.ToFloat64(s.dropped)))
}
func TestSenderSendsOneFails(t *testing.T) {
poster := &fakeClient{
urls: []*url.URL{{Host: "am1:9090"}, {Host: "am2:9090"}},
dof: func(u *url.URL) (*http.Response, error) {
rec := httptest.NewRecorder()
if u.Host == "am1:9090" {
rec.WriteHeader(http.StatusBadRequest)
} else {
rec.WriteHeader(http.StatusOK)
}
return rec.Result(), nil
},
}
s := NewSender(nil, nil, []*Alertmanager{NewAlertmanager(nil, poster, time.Minute, APIv1)})
s.Send(context.Background(), []*Alert{{}, {}})
assertSameHosts(t, poster.urls, poster.seen)
testutil.Equals(t, 0, int(promtestutil.ToFloat64(s.sent.WithLabelValues(poster.urls[0].Host))))
testutil.Equals(t, 1, int(promtestutil.ToFloat64(s.errs.WithLabelValues(poster.urls[0].Host))))
testutil.Equals(t, 2, int(promtestutil.ToFloat64(s.sent.WithLabelValues(poster.urls[1].Host))))
testutil.Equals(t, 0, int(promtestutil.ToFloat64(s.errs.WithLabelValues(poster.urls[1].Host))))
testutil.Equals(t, 0, int(promtestutil.ToFloat64(s.dropped)))
}
func TestSenderSendsAllFail(t *testing.T) {
poster := &fakeClient{
urls: []*url.URL{{Host: "am1:9090"}, {Host: "am2:9090"}},
dof: func(u *url.URL) (*http.Response, error) {
return nil, errors.New("no such host")
},
}
s := NewSender(nil, nil, []*Alertmanager{NewAlertmanager(nil, poster, time.Minute, APIv1)})
s.Send(context.Background(), []*Alert{{}, {}})
assertSameHosts(t, poster.urls, poster.seen)
testutil.Equals(t, 0, int(promtestutil.ToFloat64(s.sent.WithLabelValues(poster.urls[0].Host))))
testutil.Equals(t, 1, int(promtestutil.ToFloat64(s.errs.WithLabelValues(poster.urls[0].Host))))
testutil.Equals(t, 0, int(promtestutil.ToFloat64(s.sent.WithLabelValues(poster.urls[1].Host))))
testutil.Equals(t, 1, int(promtestutil.ToFloat64(s.errs.WithLabelValues(poster.urls[1].Host))))
testutil.Equals(t, 2, int(promtestutil.ToFloat64(s.dropped)))
}