Adding outputFilename field to URI allowing user to pick a name to use for the downloaded artifact from the Mesos fetcher.

auroraAPI.thrift

@@ -152,6 +152,8 @@ struct MesosFetcherURI {
   2: optional bool extract
   /** Cache value using Mesos Fetcher caching mechanism **/
   3: optional bool cache
+   /** Filename for the resource that is downloaded **/
+  4: optional string outputFile
 }
 
 struct ExecutorConfig {

gen-go/apache/aurora/auroraAPI.go

@@ -2564,10 +2564,12 @@ func (p *InstanceKey) String() string {
 //  - Value: Where to get the resource from
 //  - Extract: Extract compressed archive after downloading
 //  - Cache: Cache value using Mesos Fetcher caching mechanism *
+//  - OutputFile: Filename for the resource that is downloaded *
 type MesosFetcherURI struct {
   Value string `thrift:"value,1" db:"value" json:"value"`
   Extract *bool `thrift:"extract,2" db:"extract" json:"extract,omitempty"`
   Cache *bool `thrift:"cache,3" db:"cache" json:"cache,omitempty"`
+  OutputFile *string `thrift:"outputFile,4" db:"outputFile" json:"outputFile,omitempty"`
 }
 
 func NewMesosFetcherURI() *MesosFetcherURI {
@@ -2592,6 +2594,13 @@ func (p *MesosFetcherURI) GetCache() bool {
   }
 return *p.Cache
 }
+var MesosFetcherURI_OutputFile_DEFAULT string
+func (p *MesosFetcherURI) GetOutputFile() string {
+  if !p.IsSetOutputFile() {
+    return MesosFetcherURI_OutputFile_DEFAULT
+  }
+return *p.OutputFile
+}
 func (p *MesosFetcherURI) IsSetExtract() bool {
   return p.Extract != nil
 }
@@ -2600,6 +2609,10 @@ func (p *MesosFetcherURI) IsSetCache() bool {
   return p.Cache != nil
 }
 
+func (p *MesosFetcherURI) IsSetOutputFile() bool {
+  return p.OutputFile != nil
+}
+
 func (p *MesosFetcherURI) Read(iprot thrift.TProtocol) error {
   if _, err := iprot.ReadStructBegin(); err != nil {
     return thrift.PrependError(fmt.Sprintf("%T read error: ", p), err)
@@ -2643,6 +2656,16 @@ func (p *MesosFetcherURI) Read(iprot thrift.TProtocol) error {
           return err
         }
       }
+    case 4:
+      if fieldTypeId == thrift.STRING {
+        if err := p.ReadField4(iprot); err != nil {
+          return err
+        }
+      } else {
+        if err := iprot.Skip(fieldTypeId); err != nil {
+          return err
+        }
+      }
     default:
       if err := iprot.Skip(fieldTypeId); err != nil {
         return err
@@ -2685,6 +2708,15 @@ func (p *MesosFetcherURI)  ReadField3(iprot thrift.TProtocol) error {
   return nil
 }
 
+func (p *MesosFetcherURI)  ReadField4(iprot thrift.TProtocol) error {
+  if v, err := iprot.ReadString(); err != nil {
+  return thrift.PrependError("error reading field 4: ", err)
+} else {
+  p.OutputFile = &v
+}
+  return nil
+}
+
 func (p *MesosFetcherURI) Write(oprot thrift.TProtocol) error {
   if err := oprot.WriteStructBegin("MesosFetcherURI"); err != nil {
     return thrift.PrependError(fmt.Sprintf("%T write struct begin error: ", p), err) }
@@ -2692,6 +2724,7 @@ func (p *MesosFetcherURI) Write(oprot thrift.TProtocol) error {
     if err := p.writeField1(oprot); err != nil { return err }
     if err := p.writeField2(oprot); err != nil { return err }
     if err := p.writeField3(oprot); err != nil { return err }
+    if err := p.writeField4(oprot); err != nil { return err }
   }
   if err := oprot.WriteFieldStop(); err != nil {
     return thrift.PrependError("write field stop error: ", err) }
@@ -2734,6 +2767,18 @@ func (p *MesosFetcherURI) writeField3(oprot thrift.TProtocol) (err error) {
   return err
 }
 
+func (p *MesosFetcherURI) writeField4(oprot thrift.TProtocol) (err error) {
+  if p.IsSetOutputFile() {
+    if err := oprot.WriteFieldBegin("outputFile", thrift.STRING, 4); err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T write field begin error 4:outputFile: ", p), err) }
+    if err := oprot.WriteString(string(*p.OutputFile)); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T.outputFile (4) field write error: ", p), err) }
+    if err := oprot.WriteFieldEnd(); err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T write field end error 4:outputFile: ", p), err) }
+  }
+  return err
+}
+
 func (p *MesosFetcherURI) String() string {
   if p == nil {
     return "<nil>"

job.go

@@ -51,6 +51,7 @@ type Job interface {
 	// will allow any owner to elect for a job to run on the host(s)
 	AddDedicatedConstraint(role, name string) Job
 	AddURIs(extract bool, cache bool, values ...string) Job
+	AddURI(extract bool, cache bool, outputFilename, value string) Job
 	JobKey() *aurora.JobKey
 	JobConfig() *aurora.JobConfiguration
 	TaskConfig() *aurora.TaskConfig
@@ -255,6 +256,25 @@ func (j *AuroraJob) AddURIs(extract bool, cache bool, values ...string) Job {
 	return j
 }
 
+// AddURI adds a single URI to to fetch while the task is bootstrapping. Unlike AddURIs, this function allows
+// the user to specify an outputFilename. If outputFilename is anything other than the empty string, the artifact
+// downloaded will be renamed to the value provided by this string.
+// --enable_mesos_fetcher flag enabled. There is currently no duplicate detection.
+func (j *AuroraJob) AddURI(extract bool, cache bool, outputFilename, value string) Job {
+	resource := &aurora.MesosFetcherURI{
+		Value:      value,
+		Extract:    &extract,
+		Cache:      &cache,
+	}
+
+	if outputFilename != "" {
+		resource.OutputFile = &outputFilename
+	}
+
+	j.jobConfig.TaskConfig.MesosFetcherUris = append(j.jobConfig.TaskConfig.MesosFetcherUris, resource)
+	return j
+}
+
 // AddLabel adds a Mesos label to the job. Note that Aurora will add the
 // prefix "org.apache.aurora.metadata." to the beginning of each key.
 func (j *AuroraJob) AddLabel(key string, value string) Job {

realis_e2e_test.go

@@ -209,7 +209,8 @@ func TestRealisClient_CreateJob_Thermos(t *testing.T) {
 		Disk(50).
 		IsService(true).
 		InstanceCount(2).
-		AddPorts(1)
+		AddPorts(1).
+		AddURI(false, false, "test.version", "https://raw.githubusercontent.com/paypal/gorealis/master/.auroraversion")
 
 	_, err := r.CreateJob(job)
 	require.NoError(t, err)