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ingress_client_test.go
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ingress_client_test.go
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package loggregator_test
import (
"errors"
"time"
"code.cloudfoundry.org/go-loggregator"
"code.cloudfoundry.org/go-loggregator/rpc/loggregator_v2"
"code.cloudfoundry.org/go-loggregator/runtimeemitter"
"golang.org/x/net/context"
. "github.com/onsi/ginkgo"
. "github.com/onsi/ginkgo/extensions/table"
. "github.com/onsi/gomega"
)
var _ = Describe("IngressClient", func() {
var (
client *loggregator.IngressClient
server *testIngressServer
)
BeforeEach(func() {
var err error
server, err = newTestIngressServer(
fixture("server.crt"),
fixture("server.key"),
fixture("CA.crt"),
)
Expect(err).NotTo(HaveOccurred())
err = server.start()
Expect(err).NotTo(HaveOccurred())
client = buildIngressClient(server.addr, 50*time.Millisecond)
})
AfterEach(func() {
server.stop()
})
It("sends in batches", func() {
for i := 0; i < 10; i++ {
client.EmitLog(
"message",
loggregator.WithAppInfo("app-id", "source-type", "source-instance"),
loggregator.WithStdout(),
)
time.Sleep(10 * time.Millisecond)
}
Eventually(func() int {
var recv loggregator_v2.Ingress_BatchSenderServer
Eventually(server.receivers, 10).Should(Receive(&recv))
b, err := recv.Recv()
if err != nil {
return 0
}
return len(b.Batch)
}).Should(BeNumerically(">", 1))
})
It("sends app logs", func() {
client.EmitLog(
"message",
loggregator.WithAppInfo("app-id", "source-type", "source-instance"),
loggregator.WithStdout(),
)
env, err := getEnvelopeAt(server.receivers, 0)
Expect(err).NotTo(HaveOccurred())
Expect(env.SourceId).To(Equal("app-id"))
Expect(env.InstanceId).To(Equal("source-instance"))
ts := time.Unix(0, env.Timestamp)
Expect(ts).Should(BeTemporally("~", time.Now(), time.Second))
log := env.GetLog()
Expect(log).NotTo(BeNil())
Expect(log.Payload).To(Equal([]byte("message")))
Expect(log.Type).To(Equal(loggregator_v2.Log_OUT))
})
It("sends app error logs", func() {
client.EmitLog(
"message",
loggregator.WithAppInfo("app-id", "source-type", "source-instance"),
)
env, err := getEnvelopeAt(server.receivers, 0)
Expect(err).NotTo(HaveOccurred())
Expect(env.SourceId).To(Equal("app-id"))
Expect(env.InstanceId).To(Equal("source-instance"))
ts := time.Unix(0, env.Timestamp)
Expect(ts).Should(BeTemporally("~", time.Now(), time.Second))
log := env.GetLog()
Expect(log).NotTo(BeNil())
Expect(log.Payload).To(Equal([]byte("message")))
Expect(log.Type).To(Equal(loggregator_v2.Log_ERR))
})
It("sends app metrics", func() {
client.EmitGauge(
loggregator.WithGaugeValue("name-a", 1, "unit-a"),
loggregator.WithGaugeValue("name-b", 2, "unit-b"),
loggregator.WithEnvelopeTags(map[string]string{"some-tag": "some-tag-value"}),
loggregator.WithGaugeAppInfo("app-id", 123),
)
env, err := getEnvelopeAt(server.receivers, 0)
Expect(err).NotTo(HaveOccurred())
ts := time.Unix(0, env.Timestamp)
Expect(ts).Should(BeTemporally("~", time.Now(), time.Second))
metrics := env.GetGauge()
Expect(metrics).NotTo(BeNil())
Expect(env.SourceId).To(Equal("app-id"))
Expect(env.InstanceId).To(Equal("123"))
Expect(metrics.GetMetrics()).To(HaveLen(2))
Expect(metrics.GetMetrics()["name-a"].Value).To(Equal(1.0))
Expect(metrics.GetMetrics()["name-b"].Value).To(Equal(2.0))
Expect(env.Tags["some-tag"]).To(Equal("some-tag-value"))
})
It("works with the runtime emitter", func() {
// This test is to ensure that the v2 client satisfies the
// runtimeemitter.Sender interface. If it does not satisfy the
// runtimeemitter.Sender interface this test will force a compile time
// error.
runtimeemitter.New(client)
})
DescribeTable("emitting different envelope types", func(emit func()) {
emit()
env, err := getEnvelopeAt(server.receivers, 0)
Expect(err).NotTo(HaveOccurred())
Expect(env.Tags["string"]).To(Equal("client-string-tag"), "The client tag for string was not set properly")
Expect(env.Tags["envelope-string"]).To(Equal("envelope-string-tag"), "The envelope tag for string was not set properly")
},
Entry("logs", func() {
client.EmitLog(
"message",
loggregator.WithEnvelopeTag("envelope-string", "envelope-string-tag"),
)
}),
Entry("gauge", func() {
client.EmitGauge(
loggregator.WithGaugeValue("gauge-name", 123.4, "some-unit"),
loggregator.WithEnvelopeTag("envelope-string", "envelope-string-tag"),
)
}),
Entry("counter", func() {
client.EmitCounter(
"foo",
loggregator.WithEnvelopeTag("envelope-string", "envelope-string-tag"),
)
}),
)
It("sets the counter's delta to the given value", func() {
e := &loggregator_v2.Envelope{
Message: &loggregator_v2.Envelope_Counter{
Counter: &loggregator_v2.Counter{},
},
}
loggregator.WithDelta(99)(e)
Expect(e.GetCounter().GetDelta()).To(Equal(uint64(99)))
})
It("sets the app info for a counter", func() {
e := &loggregator_v2.Envelope{
Message: &loggregator_v2.Envelope_Counter{
Counter: &loggregator_v2.Counter{},
},
}
loggregator.WithCounterAppInfo("some-guid", 101)(e)
Expect(e.GetSourceId()).To(Equal("some-guid"))
Expect(e.GetInstanceId()).To(Equal("101"))
})
It("sets the title and body of an event envelope", func() {
Eventually(func() error {
return client.EmitEvent(
context.Background(),
"some-title",
"some-body",
)
}).Should(Succeed())
var envelopeBatch *loggregator_v2.EnvelopeBatch
Eventually(server.sendReceiver).Should(Receive(&envelopeBatch))
env := envelopeBatch.GetBatch()[0]
Expect(env.GetEvent()).ToNot(BeNil())
Expect(env.GetEvent().GetTitle()).To(Equal("some-title"))
Expect(env.GetEvent().GetBody()).To(Equal("some-body"))
})
It("flushes current batch and sends", func() {
client := buildIngressClient(server.addr, time.Hour)
// Ensure client/server are ready
Eventually(func() error {
return client.EmitEvent(
context.Background(),
"some-title",
"some-body",
)
}).Should(Succeed())
client.EmitLog("message")
err := client.CloseSend()
Expect(err).ToNot(HaveOccurred())
_, err = getEnvelopeAt(server.receivers, 0)
Expect(err).ToNot(HaveOccurred())
})
It("does not block on an empty buffer", func(done Done) {
defer close(done)
err := client.CloseSend()
Expect(err).ToNot(HaveOccurred())
})
})
func getEnvelopeAt(receivers chan loggregator_v2.Ingress_BatchSenderServer, idx int) (*loggregator_v2.Envelope, error) {
var recv loggregator_v2.Ingress_BatchSenderServer
Eventually(receivers, 10).Should(Receive(&recv))
envBatch, err := recv.Recv()
if err != nil {
return nil, err
}
if len(envBatch.Batch) < 1 {
return nil, errors.New("no envelopes")
}
return envBatch.Batch[idx], nil
}
func buildIngressClient(serverAddr string, flushInterval time.Duration) *loggregator.IngressClient {
tlsConfig, err := loggregator.NewIngressTLSConfig(
fixture("CA.crt"),
fixture("client.crt"),
fixture("client.key"),
)
if err != nil {
panic(err)
}
client, err := loggregator.NewIngressClient(
tlsConfig,
loggregator.WithAddr(serverAddr),
loggregator.WithBatchFlushInterval(flushInterval),
loggregator.WithTag("string", "client-string-tag"),
)
if err != nil {
panic(err)
}
return client
}