Labels are consistently validated across services

* The combined size of a key/value pair cannot exceed 4096 bytes

Signed-off-by: Jess Valarezo <valarezo.jessica@gmail.com>

api/services/snapshot/v1/snapshots.pb.go

@@ -97,6 +97,8 @@ type PrepareSnapshotRequest struct {
 	Key         string `protobuf:"bytes,2,opt,name=key,proto3" json:"key,omitempty"`
 	Parent      string `protobuf:"bytes,3,opt,name=parent,proto3" json:"parent,omitempty"`
 	// Labels are arbitrary data on snapshots.
+	//
+	// The combined size of a key/value pair cannot exceed 4096 bytes.
 	Labels map[string]string `protobuf:"bytes,4,rep,name=labels" json:"labels,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 }
 
@@ -117,6 +119,8 @@ type ViewSnapshotRequest struct {
 	Key         string `protobuf:"bytes,2,opt,name=key,proto3" json:"key,omitempty"`
 	Parent      string `protobuf:"bytes,3,opt,name=parent,proto3" json:"parent,omitempty"`
 	// Labels are arbitrary data on snapshots.
+	//
+	// The combined size of a key/value pair cannot exceed 4096 bytes.
 	Labels map[string]string `protobuf:"bytes,4,rep,name=labels" json:"labels,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 }
 
@@ -163,6 +167,8 @@ type CommitSnapshotRequest struct {
 	Name        string `protobuf:"bytes,2,opt,name=name,proto3" json:"name,omitempty"`
 	Key         string `protobuf:"bytes,3,opt,name=key,proto3" json:"key,omitempty"`
 	// Labels are arbitrary data on snapshots.
+	//
+	// The combined size of a key/value pair cannot exceed 4096 bytes.
 	Labels map[string]string `protobuf:"bytes,4,rep,name=labels" json:"labels,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 }
 
@@ -188,6 +194,8 @@ type Info struct {
 	// UpdatedAt provides the time the info was last updated.
 	UpdatedAt time.Time `protobuf:"bytes,5,opt,name=updated_at,json=updatedAt,stdtime" json:"updated_at"`
 	// Labels are arbitrary data on snapshots.
+	//
+	// The combined size of a key/value pair cannot exceed 4096 bytes.
 	Labels map[string]string `protobuf:"bytes,6,rep,name=labels" json:"labels,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 }
 

api/services/snapshot/v1/snapshots.proto

@@ -29,6 +29,8 @@ message PrepareSnapshotRequest {
 	string parent = 3;
 
 	// Labels are arbitrary data on snapshots.
+	//
+	// The combined size of a key/value pair cannot exceed 4096 bytes.
 	map<string, string> labels  = 4;
 }
 
@@ -42,6 +44,8 @@ message ViewSnapshotRequest {
 	string parent = 3;
 
 	// Labels are arbitrary data on snapshots.
+	//
+	// The combined size of a key/value pair cannot exceed 4096 bytes.
 	map<string, string> labels  = 4;
 }
 
@@ -69,6 +73,8 @@ message CommitSnapshotRequest {
 	string key = 3;
 
 	// Labels are arbitrary data on snapshots.
+	//
+	// The combined size of a key/value pair cannot exceed 4096 bytes.
 	map<string, string> labels  = 4;
 }
 
@@ -99,6 +105,8 @@ message Info {
 	google.protobuf.Timestamp updated_at = 5 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
 
 	// Labels are arbitrary data on snapshots.
+	//
+	// The combined size of a key/value pair cannot exceed 4096 bytes.
 	map<string, string> labels  = 6;
 }