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client_test.go
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client_test.go
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package client_test
import (
"bytes"
"context"
"encoding/json"
"fmt"
"io"
"net"
"net/http"
"net/http/httptest"
"net/url"
"sync"
"time"
client "code.cloudfoundry.org/go-log-cache/v3"
"code.cloudfoundry.org/go-loggregator/v10/rpc/loggregator_v2"
rpc "code.cloudfoundry.org/go-log-cache/v3/rpc/logcache_v1"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials/insecure"
. "github.com/onsi/ginkgo/v2"
. "github.com/onsi/gomega"
. "github.com/onsi/gomega/gstruct"
)
// Assert that client.Reader is fulfilled by Client.Read
var _ client.Reader = client.Reader(client.NewClient("").Read)
var insecureOpt = grpc.WithTransportCredentials(insecure.NewCredentials())
var _ = Describe("Log Cache Client", func() {
Context("HTTP client", func() {
Describe("LogCacheVersion", func() {
It("returns the log cache version", func() {
logCache := newStubLogCache()
logcache_client := client.NewClient(logCache.addr())
version, err := logcache_client.LogCacheVersion(context.Background())
Expect(err).ToNot(HaveOccurred())
Expect(version.String()).To(Equal("2.0.0"))
Expect(logCache.reqs).To(HaveLen(1))
Expect(logCache.reqs[0].URL.Path).To(Equal("/api/v1/info"))
})
})
Describe("LogCacheVMUptime", func() {
It("returns the log cache gateway VM uptime", func() {
logCache := newStubLogCache()
logcache_client := client.NewClient(logCache.addr())
uptime, err := logcache_client.LogCacheVMUptime(context.Background())
Expect(err).ToNot(HaveOccurred())
Expect(uptime).To(Equal(int64(789)))
Expect(logCache.reqs).To(HaveLen(1))
Expect(logCache.reqs[0].URL.Path).To(Equal("/api/v1/info"))
})
It("returns an error if /info endpoint does not exist", func() {
logCache := newStubOldLogCache()
logcache_client := client.NewClient(logCache.addr())
uptime, err := logcache_client.LogCacheVMUptime(context.Background())
Expect(err).To(MatchError("unexpected status code 404"))
Expect(uptime).To(Equal(int64(-1)))
})
})
Describe("Read", func() {
It("reads envelopes", func() {
logCache := newStubLogCache()
logcache_client := client.NewClient(logCache.addr())
envelopes, err := logcache_client.Read(context.Background(), "some-id", time.Unix(0, 99))
Expect(err).ToNot(HaveOccurred())
Expect(envelopes).To(HaveLen(2))
Expect(envelopes[0].Timestamp).To(BeEquivalentTo(99))
Expect(envelopes[1].Timestamp).To(BeEquivalentTo(100))
Expect(logCache.reqs).To(HaveLen(2))
Expect(logCache.reqs[0].URL.Path).To(Equal("/api/v1/info"))
Expect(logCache.reqs[1].URL.Path).To(Equal("/api/v1/read/some-id"))
assertQueryParam(logCache.reqs[1].URL, "start_time", "99")
Expect(logCache.reqs[1].URL.Query()).To(HaveLen(1))
})
It("only checks the version once with multiple calls", func() {
logCache := newStubLogCache()
logcache_client := client.NewClient(logCache.addr())
envelopes, err := logcache_client.Read(context.Background(), "some-id", time.Unix(0, 99))
Expect(err).ToNot(HaveOccurred())
Expect(envelopes).To(HaveLen(2))
envelopes, err = logcache_client.Read(context.Background(), "some-id", time.Unix(0, 99))
Expect(err).ToNot(HaveOccurred())
Expect(envelopes).To(HaveLen(2))
Expect(logCache.reqs[0].URL.Path).To(Equal("/api/v1/info"))
Expect(logCache.reqs[1].URL.Path).To(Equal("/api/v1/read/some-id"))
Expect(logCache.reqs[2].URL.Path).To(Equal("/api/v1/read/some-id"))
})
It("falls back to pre-1.4.7 endpoint", func() {
logCache := newStubOldLogCache()
logcache_client := client.NewClient(logCache.addr())
envelopes, err := logcache_client.Read(context.Background(), "some-id", time.Unix(0, 99))
Expect(err).ToNot(HaveOccurred())
Expect(envelopes).To(HaveLen(2))
Expect(envelopes[0].Timestamp).To(BeEquivalentTo(99))
Expect(envelopes[1].Timestamp).To(BeEquivalentTo(100))
Expect(logCache.reqs).To(HaveLen(2))
Expect(logCache.reqs[0].URL.Path).To(Equal("/api/v1/info"))
Expect(logCache.reqs[1].URL.Path).To(Equal("/v1/read/some-id"))
assertQueryParam(logCache.reqs[1].URL, "start_time", "99")
Expect(logCache.reqs[1].URL.Query()).To(HaveLen(1))
})
It("respects options", func() {
logCache := newStubLogCache()
logcache_client := client.NewClient(logCache.addr())
_, err := logcache_client.Read(
context.Background(),
"some-id",
time.Unix(0, 99),
client.WithEndTime(time.Unix(0, 101)),
client.WithLimit(103),
client.WithEnvelopeTypes(rpc.EnvelopeType_LOG, rpc.EnvelopeType_GAUGE),
client.WithDescending(),
client.WithNameFilter("name.*"),
)
Expect(err).ToNot(HaveOccurred())
Expect(logCache.reqs).To(HaveLen(2))
Expect(logCache.reqs[1].URL.Path).To(Equal("/api/v1/read/some-id"))
assertQueryParam(logCache.reqs[1].URL, "start_time", "99")
assertQueryParam(logCache.reqs[1].URL, "end_time", "101")
assertQueryParam(logCache.reqs[1].URL, "limit", "103")
assertQueryParam(logCache.reqs[1].URL, "envelope_types", "LOG", "GAUGE")
assertQueryParam(logCache.reqs[1].URL, "name_filter", "name.*")
assertQueryParam(logCache.reqs[1].URL, "descending", "true")
Expect(logCache.reqs[1].URL.Query()).To(HaveLen(6))
})
It("closes the body", func() {
spyHTTPClient := newSpyHTTPClient()
logcache_client := client.NewClient("", client.WithHTTPClient(spyHTTPClient))
logcache_client.Read(context.Background(), "some-name", time.Now()) //nolint:errcheck
Expect(spyHTTPClient.body.closed).To(BeTrue())
})
It("returns an error on a non-200 status", func() {
logCache := newStubLogCache()
logCache.statusCode = 500
logcache_client := client.NewClient(logCache.addr())
_, err := logcache_client.Read(context.Background(), "some-id", time.Unix(0, 99))
Expect(err).To(HaveOccurred())
})
It("returns an error on invalid JSON", func() {
logCache := newStubLogCache()
logCache.result["GET/api/v1/read/some-id"] = []byte("invalid")
logcache_client := client.NewClient(logCache.addr())
_, err := logcache_client.Read(context.Background(), "some-id", time.Unix(0, 99))
Expect(err).To(HaveOccurred())
})
It("returns an error on empty JSON", func() {
logCache := newStubLogCache()
logCache.result["GET/api/v1/read/some-id"] = []byte("{}")
logcache_client := client.NewClient(logCache.addr())
_, err := logcache_client.Read(context.Background(), "some-id", time.Unix(0, 99))
Expect(err).ToNot(HaveOccurred())
})
It("returns an error on an invalid URL", func() {
logcache_client := client.NewClient("http://invalid.url")
_, err := logcache_client.Read(context.Background(), "some-id", time.Unix(0, 99))
Expect(err).To(HaveOccurred())
logcache_client = client.NewClient("-:-invalid")
_, err = logcache_client.Read(context.Background(), "some-id", time.Unix(0, 99))
Expect(err).To(HaveOccurred())
})
It("returns an error when the read is cancelled", func() {
logCache := newStubLogCache()
logCache.block = true
logcache_client := client.NewClient(logCache.addr())
ctx, cancel := context.WithCancel(context.Background())
cancel()
_, err := logcache_client.Read(ctx, "some-id", time.Unix(0, 99))
Expect(err).To(HaveOccurred())
})
})
Describe("Meta", func() {
It("retrieves meta information", func() {
logCache := newStubLogCache()
logcache_client := client.NewClient(logCache.addr())
meta, err := logcache_client.Meta(context.Background())
Expect(err).ToNot(HaveOccurred())
Expect(meta).To(HaveLen(2))
Expect(meta).To(HaveKey("source-0"))
Expect(meta).To(HaveKey("source-1"))
})
It("falls back to the pre-1.4.7 endpoint", func() {
logCache := newStubOldLogCache()
logcache_client := client.NewClient(logCache.addr())
_, err := logcache_client.Meta(context.Background())
Expect(err).ToNot(HaveOccurred())
Expect(logCache.reqs).To(HaveLen(2))
Expect(logCache.reqs[0].URL.Path).To(Equal("/api/v1/info"))
Expect(logCache.reqs[1].URL.Path).To(Equal("/v1/meta"))
})
It("closes the body", func() {
spyHTTPClient := newSpyHTTPClient()
logcache_client := client.NewClient("", client.WithHTTPClient(spyHTTPClient))
logcache_client.Meta(context.Background()) //nolint:errcheck
Expect(spyHTTPClient.body.closed).To(BeTrue())
})
It("returns an error when the request fails", func() {
logcache_client := client.NewClient("https://some-bad-addr")
_, err := logcache_client.Meta(context.Background())
Expect(err).To(HaveOccurred())
})
It("returns an error on a non-200 status", func() {
logCache := newStubLogCache()
logCache.statusCode = http.StatusNotFound
logcache_client := client.NewClient(logCache.addr())
_, err := logcache_client.Meta(context.Background())
Expect(err).To(HaveOccurred())
})
It("returns an error on invalid JSON", func() {
logCache := newStubLogCache()
logCache.result["GET/api/v1/meta"] = []byte("not-real-result")
logcache_client := client.NewClient(logCache.addr())
_, err := logcache_client.Meta(context.Background())
Expect(err).To(HaveOccurred())
})
It("returns an error when the context is cancelled", func() {
logCache := newStubLogCache()
logCache.block = true
logcache_client := client.NewClient(logCache.addr())
ctx, cancel := context.WithCancel(context.Background())
cancel()
_, err := logcache_client.Meta(ctx)
Expect(err).To(HaveOccurred())
})
})
Describe("PromQL", func() {
It("reads points", func() {
logCache := newStubLogCache()
logcache_client := client.NewClient(logCache.addr())
result, err := logcache_client.PromQL(context.Background(), `some-query`)
Expect(err).ToNot(HaveOccurred())
samples := result.GetVector().GetSamples()
Expect(samples).To(HaveLen(1))
Expect(samples[0].Point).To(PointTo(MatchFields(
IgnoreExtras, Fields{
"Time": Equal("1234.000"),
"Value": BeEquivalentTo(99),
},
)))
Expect(logCache.reqs).To(HaveLen(1))
Expect(logCache.reqs[0].URL.Path).To(Equal("/api/v1/query"))
assertQueryParam(logCache.reqs[0].URL, "query", "some-query")
Expect(logCache.reqs[0].URL.Query()).To(HaveLen(1))
})
It("respects options", func() {
logCache := newStubLogCache()
logcache_client := client.NewClient(logCache.addr())
_, err := logcache_client.PromQL(
context.Background(),
"some-query",
client.WithPromQLTime(time.Unix(101, 455700000)),
)
Expect(err).ToNot(HaveOccurred())
Expect(logCache.reqs).To(HaveLen(1))
Expect(logCache.reqs[0].URL.Path).To(Equal("/api/v1/query"))
assertQueryParam(logCache.reqs[0].URL, "query", "some-query")
assertQueryParam(logCache.reqs[0].URL, "time", "101.456")
Expect(logCache.reqs[0].URL.Query()).To(HaveLen(2))
})
It("closes the body", func() {
spyHTTPClient := newSpyHTTPClient()
logcache_client := client.NewClient("", client.WithHTTPClient(spyHTTPClient))
logcache_client.PromQL(context.Background(), "some-query") //nolint:errcheck
Expect(spyHTTPClient.body.closed).To(BeTrue())
})
It("returns an error on a non-200 status", func() {
logCache := newStubLogCache()
logCache.statusCode = 500
logcache_client := client.NewClient(logCache.addr())
_, err := logcache_client.PromQL(context.Background(), "some-query")
Expect(err).To(HaveOccurred())
})
It("returns an error on invalid JSON", func() {
logCache := newStubLogCache()
logCache.result["GET/api/v1/query"] = []byte("invalid")
logcache_client := client.NewClient(logCache.addr())
_, err := logcache_client.PromQL(context.Background(), "some-query")
Expect(err).To(HaveOccurred())
})
It("returns an error on unreachable URL", func() {
logcache_client := client.NewClient("http://invalid.url")
_, err := logcache_client.PromQL(context.Background(), "some-query")
Expect(err).To(HaveOccurred())
})
It("returns an error on an invalid URL", func() {
logcache_client := client.NewClient("-:-invalid")
_, err := logcache_client.PromQL(context.Background(), "some-query")
Expect(err).To(HaveOccurred())
})
It("returns an error on an invalid URL", func() {
logCache := newStubLogCache()
logCache.block = true
logcache_client := client.NewClient(logCache.addr())
ctx, cancel := context.WithCancel(context.Background())
cancel()
_, err := logcache_client.PromQL(ctx, "some-query")
Expect(err).To(HaveOccurred())
})
})
Describe("PromQLRaw", func() {
It("reads points", func() {
logCache := newStubLogCache()
logcache_client := client.NewClient(logCache.addr())
result, err := logcache_client.PromQLRaw(context.Background(), `some-query`)
Expect(err).ToNot(HaveOccurred())
Expect(logCache.reqs).To(HaveLen(1))
Expect(logCache.reqs[0].URL.Path).To(Equal("/api/v1/query"))
assertQueryParam(logCache.reqs[0].URL, "query", "some-query")
Expect(logCache.reqs[0].URL.Query()).To(HaveLen(1))
Expect(result.Status).To(Equal("success"))
Expect(result.Data.ResultType).To(Equal("vector"))
expected := logCache.result["GET/api/v1/query"]
var expectedResult client.PromQLQueryResult
err = json.Unmarshal(expected, &expectedResult)
Expect(err).ToNot(HaveOccurred())
Expect(expectedResult.Data.Result).To(Equal(result.Data.Result))
})
It("respects options", func() {
logCache := newStubLogCache()
logcache_client := client.NewClient(logCache.addr())
_, err := logcache_client.PromQLRaw(
context.Background(),
"some-query",
client.WithPromQLTime(time.Unix(101, 455700000)),
)
Expect(err).ToNot(HaveOccurred())
Expect(logCache.reqs).To(HaveLen(1))
Expect(logCache.reqs[0].URL.Path).To(Equal("/api/v1/query"))
assertQueryParam(logCache.reqs[0].URL, "query", "some-query")
assertQueryParam(logCache.reqs[0].URL, "time", "101.456")
Expect(logCache.reqs[0].URL.Query()).To(HaveLen(2))
})
It("closes the body", func() {
spyHTTPClient := newSpyHTTPClient()
logcache_client := client.NewClient("", client.WithHTTPClient(spyHTTPClient))
logcache_client.PromQLRaw(context.Background(), "some-query") //nolint:errcheck
Expect(spyHTTPClient.body.closed).To(BeTrue())
})
It("returns an error on a non-200, non-404, non-500 status", func() {
logCache := newStubLogCache()
logCache.statusCode = 503
logcache_client := client.NewClient(logCache.addr())
_, err := logcache_client.PromQLRaw(context.Background(), "some-query")
Expect(err).To(HaveOccurred())
})
It("returns an error on invalid JSON", func() {
logCache := newStubLogCache()
logCache.result["GET/api/v1/query"] = []byte("invalid")
logcache_client := client.NewClient(logCache.addr())
_, err := logcache_client.PromQLRaw(context.Background(), "some-query")
Expect(err).To(HaveOccurred())
})
It("returns an error on unreachable URL", func() {
logcache_client := client.NewClient("http://invalid.url")
_, err := logcache_client.PromQLRaw(context.Background(), "some-query")
Expect(err).To(HaveOccurred())
})
It("returns an error on an invalid URL", func() {
logcache_client := client.NewClient("-:-invalid")
_, err := logcache_client.PromQLRaw(context.Background(), "some-query")
Expect(err).To(HaveOccurred())
})
It("returns an error on an invalid URL", func() {
logCache := newStubLogCache()
logCache.block = true
logcache_client := client.NewClient(logCache.addr())
ctx, cancel := context.WithCancel(context.Background())
cancel()
_, err := logcache_client.PromQLRaw(ctx, "some-query")
Expect(err).To(HaveOccurred())
})
})
Describe("PromQLRange", func() {
It("retrieves points", func() {
logCache := newStubLogCache()
logcache_client := client.NewClient(logCache.addr())
start := time.Unix(time.Now().Unix(), 123000000)
end := start.Add(time.Minute)
result, err := logcache_client.PromQLRange(
context.Background(),
`some-query`,
client.WithPromQLStart(start),
client.WithPromQLEnd(end),
client.WithPromQLStep("5m"),
)
Expect(err).ToNot(HaveOccurred())
series := result.GetMatrix().GetSeries()
Expect(series).To(HaveLen(1))
Expect(series[0].GetPoints()[0].Value).To(BeEquivalentTo(99))
Expect(series[0].GetPoints()[0].Time).To(Equal("1234.000"))
Expect(series[0].GetPoints()[1].Value).To(BeEquivalentTo(100))
Expect(series[0].GetPoints()[1].Time).To(Equal("5678.000"))
Expect(logCache.reqs).To(HaveLen(1))
Expect(logCache.reqs[0].URL.Path).To(Equal("/api/v1/query_range"))
assertQueryParam(logCache.reqs[0].URL, "query", "some-query")
assertQueryParam(logCache.reqs[0].URL, "start", fmt.Sprintf("%.3f", float64(start.UnixNano())/1e9))
assertQueryParam(logCache.reqs[0].URL, "end", fmt.Sprintf("%.3f", float64(end.UnixNano())/1e9))
assertQueryParam(logCache.reqs[0].URL, "step", "5m")
Expect(logCache.reqs[0].URL.Query()).To(HaveLen(4))
})
It("closes the body", func() {
spyHTTPClient := newSpyHTTPClient()
logcache_client := client.NewClient("", client.WithHTTPClient(spyHTTPClient))
logcache_client.PromQLRange(context.Background(), "some-query") //nolint:errcheck
Expect(spyHTTPClient.body.closed).To(BeTrue())
})
It("returns an error on a non-200 status", func() {
logCache := newStubLogCache()
logCache.statusCode = 500
logcache_client := client.NewClient(logCache.addr())
_, err := logcache_client.PromQLRange(context.Background(), "some-query")
Expect(err).To(HaveOccurred())
})
It("returns an error on invalid JSON", func() {
logCache := newStubLogCache()
logCache.result["GET/api/v1/query_range"] = []byte("invalid")
logcache_client := client.NewClient(logCache.addr())
_, err := logcache_client.PromQLRange(context.Background(), "some-query")
Expect(err).To(HaveOccurred())
})
It("returns an error on unreachable URL", func() {
logcache_client := client.NewClient("http://invalid.url")
_, err := logcache_client.PromQLRange(context.Background(), "some-query")
Expect(err).To(HaveOccurred())
})
It("returns an error on an invalid URL", func() {
logcache_client := client.NewClient("-:-invalid")
_, err := logcache_client.PromQLRange(context.Background(), "some-query")
Expect(err).To(HaveOccurred())
})
It("returns an error on an invalid URL", func() {
logCache := newStubLogCache()
logCache.block = true
logcache_client := client.NewClient(logCache.addr())
ctx, cancel := context.WithCancel(context.Background())
cancel()
_, err := logcache_client.PromQLRange(ctx, "some-query")
Expect(err).To(HaveOccurred())
})
})
Describe("PromQLRangeRaw", func() {
It("retrieves points", func() {
logCache := newStubLogCache()
logcache_client := client.NewClient(logCache.addr())
start := time.Unix(time.Now().Unix(), 123000000)
end := start.Add(time.Minute)
result, err := logcache_client.PromQLRangeRaw(
context.Background(),
`some-query`,
client.WithPromQLStart(start),
client.WithPromQLEnd(end),
client.WithPromQLStep("5m"),
)
Expect(err).ToNot(HaveOccurred())
Expect(logCache.reqs).To(HaveLen(1))
Expect(logCache.reqs[0].URL.Path).To(Equal("/api/v1/query_range"))
Expect(logCache.reqs[0].URL.Query()).To(HaveLen(4))
assertQueryParam(logCache.reqs[0].URL, "query", "some-query")
assertQueryParam(logCache.reqs[0].URL, "start", fmt.Sprintf("%.3f", float64(start.UnixNano())/1e9))
assertQueryParam(logCache.reqs[0].URL, "end", fmt.Sprintf("%.3f", float64(end.UnixNano())/1e9))
assertQueryParam(logCache.reqs[0].URL, "step", "5m")
Expect(result.Status).To(Equal("success"))
Expect(result.Data.ResultType).To(Equal("matrix"))
expected := logCache.result["GET/api/v1/query_range"]
var expectedResult client.PromQLQueryResult
err = json.Unmarshal(expected, &expectedResult)
Expect(err).ToNot(HaveOccurred())
Expect(expectedResult.Data.Result).To(Equal(result.Data.Result))
})
It("closes the body", func() {
spyHTTPClient := newSpyHTTPClient()
logcache_client := client.NewClient("", client.WithHTTPClient(spyHTTPClient))
logcache_client.PromQLRangeRaw(context.Background(), "some-query") //nolint:errcheck
Expect(spyHTTPClient.body.closed).To(BeTrue())
})
It("returns an error on a non-200, non404, and non-500 status", func() {
logCache := newStubLogCache()
logCache.statusCode = 503
logcache_client := client.NewClient(logCache.addr())
_, err := logcache_client.PromQLRangeRaw(context.Background(), "some-query")
Expect(err).To(HaveOccurred())
})
It("returns an error on invalid JSON", func() {
logCache := newStubLogCache()
logCache.result["GET/api/v1/query_range"] = []byte("invalid")
logcache_client := client.NewClient(logCache.addr())
_, err := logcache_client.PromQLRangeRaw(context.Background(), "some-query")
Expect(err).To(HaveOccurred())
})
It("returns an error on unreachable URL", func() {
logcache_client := client.NewClient("http://invalid.url")
_, err := logcache_client.PromQLRangeRaw(context.Background(), "some-query")
Expect(err).To(HaveOccurred())
})
It("returns an error on an invalid URL", func() {
logcache_client := client.NewClient("-:-invalid")
_, err := logcache_client.PromQLRangeRaw(context.Background(), "some-query")
Expect(err).To(HaveOccurred())
})
It("returns an error on an invalid URL", func() {
logCache := newStubLogCache()
logCache.block = true
logcache_client := client.NewClient(logCache.addr())
ctx, cancel := context.WithCancel(context.Background())
cancel()
_, err := logcache_client.PromQLRangeRaw(ctx, "some-query")
Expect(err).To(HaveOccurred())
})
})
})
Context("gRPC client", func() {
Describe("Read", func() {
It("reads envelopes", func() {
logCache := newStubGrpcLogCache()
logcache_client := client.NewClient(logCache.addr(), client.WithViaGRPC(insecureOpt))
endTime := time.Now()
envelopes, err := logcache_client.Read(context.Background(), "some-id", time.Unix(0, 99),
client.WithLimit(10),
client.WithEndTime(endTime),
client.WithEnvelopeTypes(rpc.EnvelopeType_LOG, rpc.EnvelopeType_GAUGE),
client.WithDescending(),
client.WithNameFilter("name.*"),
)
Expect(err).ToNot(HaveOccurred())
Expect(envelopes).To(HaveLen(2))
Expect(envelopes[0].Timestamp).To(BeEquivalentTo(99))
Expect(envelopes[1].Timestamp).To(BeEquivalentTo(100))
Expect(logCache.reqs).To(ConsistOf(PointTo(
MatchFields(IgnoreExtras,
Fields{
"SourceId": Equal("some-id"),
"StartTime": BeEquivalentTo(99),
"EndTime": BeEquivalentTo(endTime.UnixNano()),
"Limit": BeEquivalentTo(10),
"EnvelopeTypes": ConsistOf(
Equal(rpc.EnvelopeType_LOG),
Equal(rpc.EnvelopeType_GAUGE),
),
"NameFilter": Equal("name.*"),
"Descending": Equal(true),
},
),
)))
})
It("returns an error when the context is cancelled", func() {
logCache := newStubGrpcLogCache()
logCache.block = true
logcache_client := client.NewClient(logCache.addr(), client.WithViaGRPC(insecureOpt))
ctx, cancel := context.WithCancel(context.Background())
cancel()
_, err := logcache_client.Read(
ctx,
"some-id",
time.Unix(0, 99),
client.WithEndTime(time.Unix(0, 101)),
client.WithLimit(103),
client.WithEnvelopeTypes(rpc.EnvelopeType_LOG),
)
Expect(err).To(HaveOccurred())
})
})
Describe("Meta", func() {
It("retrieves meta information", func() {
logCache := newStubGrpcLogCache()
logcache_client := client.NewClient(logCache.addr(), client.WithViaGRPC(insecureOpt))
meta, err := logcache_client.Meta(context.Background())
Expect(err).ToNot(HaveOccurred())
Expect(meta).To(HaveLen(2))
Expect(meta).To(HaveKey("source-0"))
Expect(meta).To(HaveKey("source-1"))
})
It("returns an error when the context is cancelled", func() {
logCache := newStubGrpcLogCache()
logcache_client := client.NewClient(logCache.addr(), client.WithViaGRPC(insecureOpt))
ctx, cancel := context.WithCancel(context.Background())
cancel()
_, err := logcache_client.Meta(ctx)
Expect(err).To(HaveOccurred())
})
})
Describe("PromQL", func() {
It("retrieves points", func() {
logCache := newStubGrpcLogCache()
logcache_client := client.NewClient(logCache.addr(), client.WithViaGRPC(insecureOpt))
result, err := logcache_client.PromQL(context.Background(), "some-query",
client.WithPromQLTime(time.Unix(99, 0)),
)
Expect(err).ToNot(HaveOccurred())
scalar := result.GetScalar()
Expect(scalar.Time).To(Equal("99.000"))
Expect(scalar.Value).To(BeEquivalentTo(101))
Expect(logCache.promInstantReqs).To(ConsistOf(PointTo(
MatchFields(IgnoreExtras,
Fields{
"Query": Equal("some-query"),
"Time": Equal("99.000"),
},
),
)))
})
It("returns an error when the context is cancelled", func() {
logCache := newStubGrpcLogCache()
logCache.block = true
logcache_client := client.NewClient(logCache.addr(), client.WithViaGRPC(insecureOpt))
ctx, cancel := context.WithCancel(context.Background())
cancel()
_, err := logcache_client.PromQL(
ctx,
"some-query",
)
Expect(err).To(HaveOccurred())
})
})
})
})
type stubLogCache struct {
statusCode int
server *httptest.Server
reqs []*http.Request
bodies [][]byte
result map[string][]byte
block bool
}
func newStubLogCache() *stubLogCache {
s := &stubLogCache{
statusCode: http.StatusOK,
result: map[string][]byte{
"GET/api/v1/read/some-id": []byte(`{
"envelopes": {
"batch": [
{
"timestamp": 99,
"source_id": "some-id"
},
{
"timestamp": 100,
"source_id": "some-id"
}
]
}
}`),
"GET/api/v1/meta": []byte(`{
"meta": {
"source-0": {},
"source-1": {}
}
}`),
"GET/api/v1/query": []byte(`
{
"status": "success",
"data": {
"resultType": "vector",
"result": [
{
"metric": {
"deployment": "cf"
},
"value": [ 1234, "99" ]
}
]
}
}
`),
"GET/api/v1/query_range": []byte(`
{
"status": "success",
"data": {
"resultType": "matrix",
"result": [
{
"metric": {
"deployment": "cf"
},
"values": [
[ 1234, "99" ],
[ 5678, "100" ]
]
}
]
}
}
`),
"GET/api/v1/info": []byte(`
{
"version": "2.0.0",
"vm_uptime": "789"
}
`),
},
}
s.server = httptest.NewServer(s)
return s
}
func newStubOldLogCache() *stubLogCache {
s := &stubLogCache{
statusCode: http.StatusOK,
result: map[string][]byte{
"GET/v1/read/some-id": []byte(`
{
"envelopes": {
"batch": [
{
"timestamp": 99,
"source_id": "some-id"
},
{
"timestamp": 100,
"source_id": "some-id"
}
]
}
}`),
"GET/v1/meta": []byte(`{
"meta": {
"source-0": {},
"source-1": {}
}
}`),
"GET/api/v1/query": []byte(`
{
"status": "success",
"data": {
"resultType": "vector",
"result": [
{
"metric": {
"deployment": "cf"
},
"value": [ 1234, "99" ]
}
]
}
}
`),
"GET/api/v1/query_range": []byte(`
{
"status": "success",
"data": {
"resultType": "matrix",
"result": [
{
"metric": {
"deployment": "cf"
},
"values": [
[ 1234, "99" ],
[ 5678, "100" ]
]
}
]
}
}
`),
},
}
s.server = httptest.NewServer(s)
return s
}
func (s *stubLogCache) addr() string {
return s.server.URL
}
func (s *stubLogCache) ServeHTTP(w http.ResponseWriter, r *http.Request) {
if s.block {
var block chan struct{}
<-block
}
body, err := io.ReadAll(r.Body)
Expect(err).ToNot(HaveOccurred())
s.bodies = append(s.bodies, body)
s.reqs = append(s.reqs, r)
if _, ok := s.result[r.Method+r.URL.Path]; ok {
w.WriteHeader(s.statusCode)
w.Write(s.result[r.Method+r.URL.Path]) //nolint:errcheck
} else {
w.WriteHeader(http.StatusNotFound)
}
}
func assertQueryParam(u *url.URL, name string, values ...string) {
Expect(u.Query()).To(HaveKeyWithValue(name, ConsistOf(values)))
}
type stubGrpcLogCache struct {
mu sync.Mutex
reqs []*rpc.ReadRequest
promInstantReqs []*rpc.PromQL_InstantQueryRequest
promRangeReqs []*rpc.PromQL_RangeQueryRequest
lis net.Listener
block bool
rpc.UnimplementedEgressServer
rpc.UnimplementedPromQLQuerierServer
}
func newStubGrpcLogCache() *stubGrpcLogCache {
s := &stubGrpcLogCache{}
lis, err := net.Listen("tcp", ":0") //nolint:gosec
Expect(err).ToNot(HaveOccurred())
s.lis = lis
srv := grpc.NewServer()
rpc.RegisterEgressServer(srv, s)
rpc.RegisterPromQLQuerierServer(srv, s)
go srv.Serve(lis) //nolint:errcheck
return s
}
func (s *stubGrpcLogCache) addr() string {
return s.lis.Addr().String()
}
func (s *stubGrpcLogCache) Read(c context.Context, r *rpc.ReadRequest) (*rpc.ReadResponse, error) {
if s.block {