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kafkametrics_e2e_test.go
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kafkametrics_e2e_test.go
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// Copyright The OpenTelemetry 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:https://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.
//go:build integration
// +build integration
package kafkametricsreceiver
import (
"context"
"fmt"
"testing"
"time"
"github.com/stretchr/testify/require"
testcontainers "github.com/testcontainers/testcontainers-go"
"github.com/testcontainers/testcontainers-go/wait"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/consumer/consumertest"
"go.opentelemetry.io/collector/receiver"
"go.opentelemetry.io/collector/receiver/receivertest"
)
const (
zkPort = 2181
kafkaPort = 9092
kafkaZkImage = "johnnypark/kafka-zookeeper"
// only one metric, number of brokers, will be reported.
expectedMetrics = 1
)
type testHost struct {
component.Host
t *testing.T
}
func (h *testHost) ReportFatalError(err error) {
h.t.Fatalf("receiver reported a fatal error: %v", err)
}
var _ component.Host = (*testHost)(nil)
func TestIntegrationSingleNode(t *testing.T) {
t.Skip("Skip failing test, see https://github.com/open-telemetry/opentelemetry-collector-contrib/issues/17065")
ctx := context.Background()
req := testcontainers.ContainerRequest{
Image: kafkaZkImage,
ExposedPorts: []string{
fmt.Sprintf("%d/tcp", kafkaPort),
fmt.Sprintf("%d/tcp", zkPort),
},
WaitingFor: wait.ForAll(
wait.ForListeningPort("2181/tcp").WithStartupTimeout(time.Minute*2),
wait.ForListeningPort("9092/tcp").WithStartupTimeout(time.Minute*2),
).WithDeadline(time.Minute * 2),
}
container, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{
ContainerRequest: req,
Started: true,
})
require.Nil(t, err)
mappedKafkaPort, err := container.MappedPort(ctx, "9092")
require.Nil(t, err)
hostIP, err := container.Host(ctx)
require.Nil(t, err)
kafkaAddress := fmt.Sprintf("%s:%s", hostIP, mappedKafkaPort.Port())
f := NewFactory()
cfg := f.CreateDefaultConfig().(*Config)
cfg.Scrapers = []string{
"brokers",
"consumers",
"topics",
}
cfg.Brokers = []string{kafkaAddress}
cfg.CollectionInterval = 5 * time.Second
consumer := new(consumertest.MetricsSink)
var receiver receiver.Metrics
receiver, err = f.CreateMetricsReceiver(context.Background(), receivertest.NewNopCreateSettings(), cfg, consumer)
require.NoError(t, err, "failed to create receiver")
require.Eventuallyf(t, func() bool {
err = receiver.Start(context.Background(), &testHost{t: t})
return err == nil
}, 30*time.Second, 5*time.Second, fmt.Sprintf("failed to start metrics receiver. %v", err))
t.Logf("waiting for metrics...")
require.Eventuallyf(t,
func() bool {
return consumer.DataPointCount() >= expectedMetrics
}, 30*time.Second, 5*time.Second,
"expected metrics not received",
)
}