[annotee] add SOURCE_MANIFEST annotation.

logdog/client/annotee/annotation/annotation.go

Index: logdog/client/annotee/annotation/annotation.go
diff --git a/logdog/client/annotee/annotation/annotation.go b/logdog/client/annotee/annotation/annotation.go
index e6634009da5c6e5d13f7011ccf4bab6ee634a9d5..57859f915174a368dfa1d4c082161fcd0a2a54c7 100644
--- a/logdog/client/annotee/annotation/annotation.go
+++ b/logdog/client/annotee/annotation/annotation.go
@@ -15,6 +15,7 @@
 package annotation
 
 import (
+	"encoding/hex"
 	"fmt"
 	"strconv"
 	"strings"
@@ -372,10 +373,38 @@ func (s *State) Append(annotation string) error {
 		}
 		updatedIf(step, UpdateIterative, step.SetProperty(parts[0], parts[1]))
 
-		// @@@STEP_TRIGGER@<spec>@@@
+	// @@@STEP_TRIGGER@<spec>@@@
 	case "STEP_TRIGGER":
 		// Annotee will stop short of sending an actual request to BuildBucket.
 		break
+
+	// This is ONLY supported by annotee, not by buildbot.
+	// @@@DEPLOYMENT_MANIFEST@<name>@<sha256>@<url>@@@
+	case "DEPLOYMENT_MANIFEST":
+		parts := strings.SplitN(params, "@", 3)
+		if len(parts) != 3 {
+			return fmt.Errorf("DEPLOYMENT_MANIFEST expected 3 params, got %q", params)
+		}
+
+		step := s.RootStep()
+		if step.DeploymentManifests == nil {
+			step.DeploymentManifests = map[string]*milo.Step_ManifestLink{}
+		}
+
+		name, hashHex, url := parts[0], parts[1], parts[2]
+		hash, err := hex.DecodeString(hashHex)
+		if err != nil {
+			return fmt.Errorf("DEPLOYMENT_MANIFEST has bad hash: %s", err)
+		}
+		if _, ok := step.DeploymentManifests[name]; ok {
+			return fmt.Errorf("repeated DEPLOYMENT_MANIFEST name %q", name)
+		}
+
+		step.DeploymentManifests[name] = &milo.Step_ManifestLink{
+			Sha256: hash,
+			Url:    url,
+		}
+		updated = step
 	}
 
 	if updated != nil {