LogDog: Add collector service implementation.

server/internal/logdog/collector/collector_test.go

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package collector
+
+import (
+        "bytes"
+        "fmt"
+        "sync/atomic"
+        "testing"
+
+        "github.com/luci/luci-go/common/clock/testclock"
+        "github.com/luci/luci-go/common/errors"
+        "github.com/luci/luci-go/common/logdog/butlerproto"
+        "github.com/luci/luci-go/common/logdog/types"
+        "github.com/luci/luci-go/common/proto/logdog/logpb"
+        "github.com/luci/luci-go/server/internal/logdog/collector/coordinator"
+        "github.com/luci/luci-go/server/logdog/storage/memory"
+        "golang.org/x/net/context"
+
+        . "github.com/smartystreets/goconvey/convey"
+)
+
+// TestCollector runs through a series of end-to-end Collector workflows and
+// ensures that the Collector behaves appropriately.
+func TestCollector(t *testing.T) {
+        t.Parallel()
+
+        Convey(`Using a test configuration`, t, func() {
+                c, _ := testclock.UseTime(context.Background(), testclock.TestTimeLocal)
+
+                tcc := &testCoordinator{}
+                st := &testStorage{Storage: &memory.Storage{}}
+
+                coll := &Collector{
+                        Coordinator: tcc,
+                        Storage:     st,
+                }
+
+                bb := bundleBuilder{
+                        Context: c,
+                }
+
+                for _, v := range []bool{

[iannucci, 2016/02/05 23:41:01]

for _, phrase := range []string{"disabled", "enabled"} {
  v := phrase == "enabled"
  ...
}
?

[dnj (Google), 2016/02/06 04:10:36]

Done.

+                        false,
+                        true,
+                } {
+                        phrase := "disabled"
+                        if v {
+                                phrase = "enabled"
+                        }
+                        Convey(fmt.Sprintf(`When caching is %s`, phrase), func() {
+                                if v {
+                                        coll.Coordinator = coordinator.NewCache(coll.Coordinator, 0, 0)
+                                }
+
+                                Convey(`Can process multiple single full streams from a Butler bundle.`, func() {
+                                        bb.addFullStream("foo/+/bar", 128)
+                                        bb.addFullStream("foo/+/baz", 256)
+
+                                        So(coll.Process(c, bb.bundle()), ShouldBeNil)
+
+                                        So(tcc, shouldHaveRegisteredStream, "foo/+/bar", 127)
+                                        So(st, shouldHaveStoredStream, "foo/+/bar", indexRange{0, 127})
+
+                                        So(tcc, shouldHaveRegisteredStream, "foo/+/baz", 255)
+                                        So(st, shouldHaveStoredStream, "foo/+/baz", indexRange{0, 255})
+                                })
+
+                                Convey(`Will return a transient error if a transient error happened while registering.`, func() {
+                                        tcc.errC = make(chan error, 1)
+                                        tcc.errC <- errors.WrapTransient(errors.New("test error"))
+
+                                        bb.addFullStream("foo/+/bar", 128)
+                                        err := coll.Process(c, bb.bundle())
+                                        So(err, ShouldNotBeNil)
+                                        So(errors.IsTransient(err), ShouldBeTrue)
+                                })
+
+                                Convey(`Will return an error if a non-transient error happened while registering.`, func() {
+                                        tcc.errC = make(chan error, 1)
+                                        tcc.errC <- errors.New("test error")
+
+                                        bb.addFullStream("foo/+/bar", 128)
+                                        err := coll.Process(c, bb.bundle())
+                                        So(err, ShouldNotBeNil)
+                                        So(errors.IsTransient(err), ShouldBeFalse)
+                                })
+
+                                Convey(`Will return a transient error if a transient error happened while terminating.`, func() {
+                                        tcc.errC = make(chan error, 2)
+                                        tcc.errC <- nil                                            // Register
+                                        tcc.errC <- errors.WrapTransient(errors.New("test error")) // Terminate
+
+                                        bb.addFullStream("foo/+/bar", 128)
+                                        err := coll.Process(c, bb.bundle())
+                                        So(err, ShouldNotBeNil)
+                                        So(errors.IsTransient(err), ShouldBeTrue)
+                                })
+
+                                Convey(`Will return an error if a non-transient error happened while terminating.`, func() {
+                                        tcc.errC = make(chan error, 2)
+                                        tcc.errC <- nil                      // Register
+                                        tcc.errC <- errors.New("test error") // Terminate
+
+                                        bb.addFullStream("foo/+/bar", 128)
+                                        err := coll.Process(c, bb.bundle())
+                                        So(err, ShouldNotBeNil)
+                                        So(errors.IsTransient(err), ShouldBeFalse)
+                                })
+
+                                Convey(`Will return a transient error if an error happened on storage.`, func() {
+                                        // Single transient error.
+                                        count := int32(0)
+                                        st.err = func() error {
+                                                if atomic.AddInt32(&count, 1) == 1 {
+                                                        return errors.New("test error")
+                                                }
+                                                return nil
+                                        }
+
+                                        bb.addFullStream("foo/+/bar", 128)
+                                        err := coll.Process(c, bb.bundle())
+                                        So(err, ShouldNotBeNil)
+                                        So(errors.IsTransient(err), ShouldBeTrue)
+                                })
+
+                                Convey(`Will drop invalid LogStreamDescriptor bundle entries and process the valid ones.`, func() {
+                                        be := bb.genBundleEntry("foo/+/trash", 1337, 4, 6, 7, 8)
+                                        be.Desc.ContentType = "" // Missing ContentType => invalid.
+
+                                        bb.addStreamEntries("foo/+/trash", -1, 0, 1, 2, 3, 5)
+                                        bb.addBundleEntry(be)
+                                        bb.addFullStream("foo/+/bar", 32)
+
+                                        So(coll.Process(c, bb.bundle()), ShouldBeNil)
+
+                                        So(tcc, shouldHaveRegisteredStream, "foo/+/bar", 32)
+                                        So(st, shouldHaveStoredStream, "foo/+/bar", indexRange{0, 31})
+
+                                        So(tcc, shouldHaveRegisteredStream, "foo/+/trash", -1)
+                                        So(st, shouldHaveStoredStream, "foo/+/trash", 0, 1, 2, 3, 5)
+                                })
+
+                                Convey(`Will drop streams with missing secrets.`, func() {
+                                        be := bb.genBundleEntry("foo/+/trash", 2, 0, 1, 2)
+                                        be.Secret = nil
+                                        bb.addBundleEntry(be)
+
+                                        So(coll.Process(c, bb.bundle()), ShouldBeNil)
+                                        So(tcc, shouldNotHaveRegisteredStream, "foo/+/bar", 127)
+                                })
+
+                                Convey(`Will drop messages with mismatching secrets.`, func() {
+                                        bb.addStreamEntries("foo/+/bar", -1, 0, 1, 2)
+                                        So(coll.Process(c, bb.bundle()), ShouldBeNil)
+
+                                        // Push another bundle with a different secret.
+                                        be := bb.genBundleEntry("foo/+/bar", 4, 3, 4)
+                                        be.Secret = bytes.Repeat([]byte{0xAA}, types.StreamSecretLength)
+                                        be.TerminalIndex = 1337
+                                        bb.addBundleEntry(be)
+                                        bb.addFullStream("foo/+/baz", 3)
+                                        So(coll.Process(c, bb.bundle()), ShouldBeNil)
+
+                                        So(tcc, shouldHaveRegisteredStream, "foo/+/bar", -1)
+                                        So(st, shouldHaveStoredStream, "foo/+/bar", indexRange{0, 2})
+
+                                        So(tcc, shouldHaveRegisteredStream, "foo/+/baz", 2)
+                                        So(st, shouldHaveStoredStream, "foo/+/baz", indexRange{0, 2})
+                                })
+
+                                Convey(`Will return no error if the data has a corrupt bundle header.`, func() {
+                                        So(coll.Process(c, []byte{0x00}), ShouldBeNil)
+                                        So(tcc, shouldNotHaveRegisteredStream, "foo/+/bar")
+                                })
+
+                                Convey(`Will drop bundles with unknown ProtoVersion string.`, func() {
+                                        buf := bytes.Buffer{}
+                                        w := butlerproto.Writer{ProtoVersion: "!!!invalid!!!"}
+                                        w.Write(&buf, &logpb.ButlerLogBundle{})
+
+                                        So(coll.Process(c, buf.Bytes()), ShouldBeNil)
+
+                                        So(tcc, shouldNotHaveRegisteredStream, "foo/+/bar")
+                                })
+
+                                Convey(`Will drop records beyond a local terminal index.`, func() {
+                                        bb.addStreamEntries("foo/+/bar", 3, 0, 1, 2, 4)
+                                        So(coll.Process(c, bb.bundle()), ShouldBeNil)
+
+                                        bb.addStreamEntries("foo/+/bar", 3, 3, 5)
+                                        So(coll.Process(c, bb.bundle()), ShouldBeNil)
+
+                                        So(tcc, shouldHaveRegisteredStream, "foo/+/bar", 4)
+                                        So(st, shouldHaveStoredStream, "foo/+/bar", indexRange{0, 3})
+                                })
+
+                                Convey(`Will not ingest records beyond a remote terminal index.`, func() {
+                                        tcc.register(coordinator.LogStreamState{
+                                                Path:          "foo/+/bar",
+                                                Secret:        testSecret,
+                                                TerminalIndex: 3,
+                                        })
+
+                                        bb.addStreamEntries("foo/+/bar", 3, 0, 1, 2)
+                                        bb.addStreamEntries("foo/+/bar", 3, 3, 5)
+                                        So(coll.Process(c, bb.bundle()), ShouldBeNil)
+
+                                        So(tcc, shouldHaveRegisteredStream, "foo/+/bar", 3)
+                                        So(st, shouldHaveStoredStream, "foo/+/bar", indexRange{0, 3})
+                                })
+
+                                Convey(`Will not ingest records if the stream is archived.`, func() {
+                                        tcc.register(coordinator.LogStreamState{
+                                                Path:          "foo/+/bar",
+                                                Secret:        testSecret,
+                                                TerminalIndex: -1,
+                                                Archived:      true,
+                                        })
+
+                                        bb.addStreamEntries("foo/+/bar", 3, 0, 1, 2, 4)
+                                        So(coll.Process(c, bb.bundle()), ShouldBeNil)
+
+                                        So(tcc, shouldHaveRegisteredStream, "foo/+/bar", -1)
+                                        So(st, shouldHaveStoredStream, "foo/+/bar")
+                                })
+
+                                Convey(`Will not ingest records if the stream is purged.`, func() {
+                                        tcc.register(coordinator.LogStreamState{
+                                                Path:          "foo/+/bar",
+                                                Secret:        testSecret,
+                                                TerminalIndex: -1,
+                                                Purged:        true,
+                                        })
+
+                                        So(coll.Process(c, bb.bundle()), ShouldBeNil)
+
+                                        So(tcc, shouldHaveRegisteredStream, "foo/+/bar", -1)
+                                        So(st, shouldHaveStoredStream, "foo/+/bar")
+                                })
+
+                                Convey(`Will not ingest a bundle with no bundle entries.`, func() {
+                                        So(coll.Process(c, bb.bundleWithEntries()), ShouldBeNil)
+                                })
+
+                                Convey(`Will not ingest a bundle whose log entries don't match their descriptor.`, func() {
+                                        be := bb.genBundleEntry("foo/+/bar", 4, 0, 1, 3, 4)
+
+                                        // Add a binary log entry. This does NOT match the text descriptor, and
+                                        // should fail validation.
+                                        be.Logs = append(be.Logs, &logpb.LogEntry{
+                                                StreamIndex: 2,
+                                                Sequence:    2,
+                                                Content: &logpb.LogEntry_Binary{
+                                                        &logpb.Binary{
+                                                                Data: []byte{0xd0, 0x6f, 0x00, 0xd5},
+                                                        },
+                                                },
+                                        })
+                                        bb.addBundleEntry(be)
+                                        So(coll.Process(c, bb.bundle()), ShouldBeNil)
+
+                                        So(tcc, shouldHaveRegisteredStream, "foo/+/bar", 4)
+                                        So(st, shouldHaveStoredStream, "foo/+/bar", 0, 1, 3, 4)
+                                })
+                        })
+                }
+        })
+}