GOCBC-733: Added missing Status field to QueryMetaData.

Change-Id: Ib4eceb9558afe2895ea958c18dd46ac94d936f18
Reviewed-on: http://review.couchbase.org/120390
Reviewed-by: Michael Nitschinger <michael.nitschinger@couchbase.com>
Tested-by: Brett Lawson <brett19@gmail.com>

cluster_query.go

@@ -32,7 +32,7 @@ type jsonQueryWarning struct {
 type jsonQueryResponse struct {
 	RequestID       string             `json:"requestID"`
 	ClientContextID string             `json:"clientContextID"`
-	Status          string             `json:"status"`
+	Status          QueryStatus        `json:"status"`
 	Warnings        []jsonQueryWarning `json:"warnings"`
 	Metrics         jsonQueryMetrics   `json:"metrics"`
 	Profile         interface{}        `json:"profile"`
@@ -97,6 +97,7 @@ func (warning *QueryWarning) fromData(data jsonQueryWarning) error {
 type QueryMetaData struct {
 	RequestID       string
 	ClientContextID string
+	Status          QueryStatus
 	Metrics         QueryMetrics
 	Signature       interface{}
 	Warnings        []QueryWarning
@@ -118,6 +119,7 @@ func (meta *QueryMetaData) fromData(data jsonQueryResponse) error {
 
 	meta.RequestID = data.RequestID
 	meta.ClientContextID = data.ClientContextID
+	meta.Status = data.Status
 	meta.Metrics = metrics
 	meta.Signature = data.Signature
 	meta.Warnings = warnings

constants.go

@@ -19,6 +19,41 @@ const (
 	QueryIndexTypeView = QueryIndexType("views")
 )
 
+// QueryStatus provides information about the current status of a query.
+type QueryStatus string
+
+const (
+	// QueryStatusRunning indicates the query is still running
+	QueryStatusRunning = QueryStatus("running")
+
+	// QueryStatusSuccess indicates the query was successful.
+	QueryStatusSuccess = QueryStatus("success")
+
+	// QueryStatusErrors indicates a query completed with errors.
+	QueryStatusErrors = QueryStatus("errors")
+
+	// QueryStatusCompleted indicates a query has completed.
+	QueryStatusCompleted = QueryStatus("completed")
+
+	// QueryStatusStopped indicates a query has been stopped.
+	QueryStatusStopped = QueryStatus("stopped")
+
+	// QueryStatusTimeout indicates a query timed out.
+	QueryStatusTimeout = QueryStatus("timeout")
+
+	// QueryStatusClosed indicates that a query was closed.
+	QueryStatusClosed = QueryStatus("closed")
+
+	// QueryStatusFatal indicates that a query ended with a fatal error.
+	QueryStatusFatal = QueryStatus("fatal")
+
+	// QueryStatusAborted indicates that a query was aborted.
+	QueryStatusAborted = QueryStatus("aborted")
+
+	// QueryStatusUnknown indicates that the query status is unknown.
+	QueryStatusUnknown = QueryStatus("unknown")
+)
+
 // ServiceType specifies a particular Couchbase service type.
 type ServiceType gocbcore.ServiceType