pod logging

api/workflow.pb.go

@@ -166,6 +166,69 @@ func (m *WatchWorkflowRequest) GetName() string {
 	return ""
 }
 
+type GetWorkflowLogsRequest struct {
+	Namespace            string   `protobuf:"bytes,1,opt,name=namespace,proto3" json:"namespace,omitempty"`
+	Name                 string   `protobuf:"bytes,2,opt,name=name,proto3" json:"name,omitempty"`
+	PodName              string   `protobuf:"bytes,3,opt,name=podName,proto3" json:"podName,omitempty"`
+	ContainerName        string   `protobuf:"bytes,4,opt,name=containerName,proto3" json:"containerName,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *GetWorkflowLogsRequest) Reset()         { *m = GetWorkflowLogsRequest{} }
+func (m *GetWorkflowLogsRequest) String() string { return proto.CompactTextString(m) }
+func (*GetWorkflowLogsRequest) ProtoMessage()    {}
+func (*GetWorkflowLogsRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_892c7f566756b0be, []int{3}
+}
+
+func (m *GetWorkflowLogsRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_GetWorkflowLogsRequest.Unmarshal(m, b)
+}
+func (m *GetWorkflowLogsRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_GetWorkflowLogsRequest.Marshal(b, m, deterministic)
+}
+func (m *GetWorkflowLogsRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_GetWorkflowLogsRequest.Merge(m, src)
+}
+func (m *GetWorkflowLogsRequest) XXX_Size() int {
+	return xxx_messageInfo_GetWorkflowLogsRequest.Size(m)
+}
+func (m *GetWorkflowLogsRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_GetWorkflowLogsRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_GetWorkflowLogsRequest proto.InternalMessageInfo
+
+func (m *GetWorkflowLogsRequest) GetNamespace() string {
+	if m != nil {
+		return m.Namespace
+	}
+	return ""
+}
+
+func (m *GetWorkflowLogsRequest) GetName() string {
+	if m != nil {
+		return m.Name
+	}
+	return ""
+}
+
+func (m *GetWorkflowLogsRequest) GetPodName() string {
+	if m != nil {
+		return m.PodName
+	}
+	return ""
+}
+
+func (m *GetWorkflowLogsRequest) GetContainerName() string {
+	if m != nil {
+		return m.ContainerName
+	}
+	return ""
+}
+
 type ListWorkflowsRequest struct {
 	Namespace            string   `protobuf:"bytes,1,opt,name=namespace,proto3" json:"namespace,omitempty"`
 	WorkflowTemplateUid  string   `protobuf:"bytes,2,opt,name=workflowTemplateUid,proto3" json:"workflowTemplateUid,omitempty"`
@@ -178,7 +241,7 @@ func (m *ListWorkflowsRequest) Reset()         { *m = ListWorkflowsRequest{} }
 func (m *ListWorkflowsRequest) String() string { return proto.CompactTextString(m) }
 func (*ListWorkflowsRequest) ProtoMessage()    {}
 func (*ListWorkflowsRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_892c7f566756b0be, []int{3}
+	return fileDescriptor_892c7f566756b0be, []int{4}
 }
 
 func (m *ListWorkflowsRequest) XXX_Unmarshal(b []byte) error {
@@ -225,7 +288,7 @@ func (m *ListWorkflowsResponse) Reset()         { *m = ListWorkflowsResponse{} }
 func (m *ListWorkflowsResponse) String() string { return proto.CompactTextString(m) }
 func (*ListWorkflowsResponse) ProtoMessage()    {}
 func (*ListWorkflowsResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_892c7f566756b0be, []int{4}
+	return fileDescriptor_892c7f566756b0be, []int{5}
 }
 
 func (m *ListWorkflowsResponse) XXX_Unmarshal(b []byte) error {
@@ -260,6 +323,45 @@ func (m *ListWorkflowsResponse) GetWorkflows() []*Workflow {
 	return nil
 }
 
+type LogEntry struct {
+	Content              string   `protobuf:"bytes,1,opt,name=content,proto3" json:"content,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *LogEntry) Reset()         { *m = LogEntry{} }
+func (m *LogEntry) String() string { return proto.CompactTextString(m) }
+func (*LogEntry) ProtoMessage()    {}
+func (*LogEntry) Descriptor() ([]byte, []int) {
+	return fileDescriptor_892c7f566756b0be, []int{6}
+}
+
+func (m *LogEntry) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_LogEntry.Unmarshal(m, b)
+}
+func (m *LogEntry) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_LogEntry.Marshal(b, m, deterministic)
+}
+func (m *LogEntry) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_LogEntry.Merge(m, src)
+}
+func (m *LogEntry) XXX_Size() int {
+	return xxx_messageInfo_LogEntry.Size(m)
+}
+func (m *LogEntry) XXX_DiscardUnknown() {
+	xxx_messageInfo_LogEntry.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_LogEntry proto.InternalMessageInfo
+
+func (m *LogEntry) GetContent() string {
+	if m != nil {
+		return m.Content
+	}
+	return ""
+}
+
 type Workflow struct {
 	Uid                  string            `protobuf:"bytes,1,opt,name=uid,proto3" json:"uid,omitempty"`
 	Name                 string            `protobuf:"bytes,2,opt,name=name,proto3" json:"name,omitempty"`
@@ -275,7 +377,7 @@ func (m *Workflow) Reset()         { *m = Workflow{} }
 func (m *Workflow) String() string { return proto.CompactTextString(m) }
 func (*Workflow) ProtoMessage()    {}
 func (*Workflow) Descriptor() ([]byte, []int) {
-	return fileDescriptor_892c7f566756b0be, []int{5}
+	return fileDescriptor_892c7f566756b0be, []int{7}
 }
 
 func (m *Workflow) XXX_Unmarshal(b []byte) error {
@@ -343,7 +445,7 @@ func (m *Parameter) Reset()         { *m = Parameter{} }
 func (m *Parameter) String() string { return proto.CompactTextString(m) }
 func (*Parameter) ProtoMessage()    {}
 func (*Parameter) Descriptor() ([]byte, []int) {
-	return fileDescriptor_892c7f566756b0be, []int{6}
+	return fileDescriptor_892c7f566756b0be, []int{8}
 }
 
 func (m *Parameter) XXX_Unmarshal(b []byte) error {
@@ -382,8 +484,10 @@ func init() {
 	proto.RegisterType((*CreateWorkflowRequest)(nil), "api.CreateWorkflowRequest")
 	proto.RegisterType((*GetWorkflowRequest)(nil), "api.GetWorkflowRequest")
 	proto.RegisterType((*WatchWorkflowRequest)(nil), "api.WatchWorkflowRequest")
+	proto.RegisterType((*GetWorkflowLogsRequest)(nil), "api.GetWorkflowLogsRequest")
 	proto.RegisterType((*ListWorkflowsRequest)(nil), "api.ListWorkflowsRequest")
 	proto.RegisterType((*ListWorkflowsResponse)(nil), "api.ListWorkflowsResponse")
+	proto.RegisterType((*LogEntry)(nil), "api.LogEntry")
 	proto.RegisterType((*Workflow)(nil), "api.Workflow")
 	proto.RegisterType((*Parameter)(nil), "api.Parameter")
 }
@@ -391,49 +495,55 @@ func init() {
 func init() { proto.RegisterFile("workflow.proto", fileDescriptor_892c7f566756b0be) }
 
 var fileDescriptor_892c7f566756b0be = []byte{
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-	0xce, 0x5f, 0x49, 0x0c, 0x2c, 0xfd, 0x57, 0x49, 0x4a, 0xf9, 0x50, 0x51, 0xda, 0x38, 0x54, 0xfc,
+	0xf0, 0x6f, 0x32, 0xc0, 0x33, 0xee, 0x49, 0x5b, 0x38, 0x57, 0x81, 0x3c, 0xd5, 0x90, 0xc7, 0xb4,
-	0x8f, 0x27, 0xd4, 0xaf, 0x83, 0x07, 0x7f, 0x02, 0x00, 0x00, 0xff, 0xff, 0x32, 0xe7, 0x89, 0x2c,
+	0x32, 0x0a, 0xa4, 0xd5, 0x89, 0x43, 0x16, 0x5b, 0x76, 0xbd, 0x6b, 0xb5, 0x7b, 0x3c, 0x49, 0x49,
-	0x6b, 0x08, 0x00, 0x00,
+	0x5c, 0x10, 0x98, 0xeb, 0xbb, 0xd5, 0x70, 0xff, 0xbf, 0xf8, 0x7d, 0x0f, 0xc9, 0xfd, 0x96, 0x68,
+	0xf0, 0x2e, 0x96, 0x47, 0x03, 0xf7, 0x39, 0x8f, 0x0e, 0x70, 0x6f, 0xf4, 0x53, 0x61, 0x76, 0x56,
+	0x27, 0xf8, 0xea, 0xe2, 0x67, 0x02, 0x4b, 0xfd, 0xf3, 0x17, 0xbb, 0x18, 0x89, 0xab, 0x03, 0x23,
+	0x1a, 0x77, 0x31, 0x79, 0xae, 0x0d, 0xe1, 0x19, 0xcc, 0xf6, 0xae, 0x4e, 0x7d, 0x07, 0xef, 0x5c,
+	0x21, 0x09, 0xfc, 0x48, 0xa2, 0xbf, 0x69, 0x26, 0x9a, 0xc4, 0xff, 0x7f, 0x4a, 0x12, 0xc2, 0xd2,
+	0x5f, 0xb9, 0x04, 0x94, 0xb7, 0x34, 0x65, 0x11, 0x47, 0x6a, 0xff, 0x93, 0x09, 0xfd, 0xcf, 0xea,
+	0xe6, 0x8f, 0x00, 0x00, 0x00, 0xff, 0xff, 0xb3, 0x25, 0x28, 0x97, 0xa7, 0x09, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -453,6 +563,7 @@ type WorkflowServiceClient interface {
 	GetWorkflow(ctx context.Context, in *GetWorkflowRequest, opts ...grpc.CallOption) (*Workflow, error)
 	ListWorkflows(ctx context.Context, in *ListWorkflowsRequest, opts ...grpc.CallOption) (*ListWorkflowsResponse, error)
 	WatchWorkflow(ctx context.Context, in *WatchWorkflowRequest, opts ...grpc.CallOption) (WorkflowService_WatchWorkflowClient, error)
+	GetWorkflowLogs(ctx context.Context, in *GetWorkflowLogsRequest, opts ...grpc.CallOption) (WorkflowService_GetWorkflowLogsClient, error)
 	CreateWorkflowTemplate(ctx context.Context, in *CreateWorkflowTemplateRequest, opts ...grpc.CallOption) (*WorkflowTemplate, error)
 	CreateWorkflowTemplateVersion(ctx context.Context, in *CreateWorkflowTemplateRequest, opts ...grpc.CallOption) (*WorkflowTemplate, error)
 	GetWorkflowTemplate(ctx context.Context, in *GetWorkflowTemplateRequest, opts ...grpc.CallOption) (*WorkflowTemplate, error)
@@ -527,6 +638,38 @@ func (x *workflowServiceWatchWorkflowClient) Recv() (*Workflow, error) {
 	return m, nil
 }
 
+func (c *workflowServiceClient) GetWorkflowLogs(ctx context.Context, in *GetWorkflowLogsRequest, opts ...grpc.CallOption) (WorkflowService_GetWorkflowLogsClient, error) {
+	stream, err := c.cc.NewStream(ctx, &_WorkflowService_serviceDesc.Streams[1], "/api.WorkflowService/GetWorkflowLogs", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &workflowServiceGetWorkflowLogsClient{stream}
+	if err := x.ClientStream.SendMsg(in); err != nil {
+		return nil, err
+	}
+	if err := x.ClientStream.CloseSend(); err != nil {
+		return nil, err
+	}
+	return x, nil
+}
+
+type WorkflowService_GetWorkflowLogsClient interface {
+	Recv() (*LogEntry, error)
+	grpc.ClientStream
+}
+
+type workflowServiceGetWorkflowLogsClient struct {
+	grpc.ClientStream
+}
+
+func (x *workflowServiceGetWorkflowLogsClient) Recv() (*LogEntry, error) {
+	m := new(LogEntry)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
 func (c *workflowServiceClient) CreateWorkflowTemplate(ctx context.Context, in *CreateWorkflowTemplateRequest, opts ...grpc.CallOption) (*WorkflowTemplate, error) {
 	out := new(WorkflowTemplate)
 	err := c.cc.Invoke(ctx, "/api.WorkflowService/CreateWorkflowTemplate", in, out, opts...)
@@ -579,6 +722,7 @@ type WorkflowServiceServer interface {
 	GetWorkflow(context.Context, *GetWorkflowRequest) (*Workflow, error)
 	ListWorkflows(context.Context, *ListWorkflowsRequest) (*ListWorkflowsResponse, error)
 	WatchWorkflow(*WatchWorkflowRequest, WorkflowService_WatchWorkflowServer) error
+	GetWorkflowLogs(*GetWorkflowLogsRequest, WorkflowService_GetWorkflowLogsServer) error
 	CreateWorkflowTemplate(context.Context, *CreateWorkflowTemplateRequest) (*WorkflowTemplate, error)
 	CreateWorkflowTemplateVersion(context.Context, *CreateWorkflowTemplateRequest) (*WorkflowTemplate, error)
 	GetWorkflowTemplate(context.Context, *GetWorkflowTemplateRequest) (*WorkflowTemplate, error)
@@ -602,6 +746,9 @@ func (*UnimplementedWorkflowServiceServer) ListWorkflows(ctx context.Context, re
 func (*UnimplementedWorkflowServiceServer) WatchWorkflow(req *WatchWorkflowRequest, srv WorkflowService_WatchWorkflowServer) error {
 	return status.Errorf(codes.Unimplemented, "method WatchWorkflow not implemented")
 }
+func (*UnimplementedWorkflowServiceServer) GetWorkflowLogs(req *GetWorkflowLogsRequest, srv WorkflowService_GetWorkflowLogsServer) error {
+	return status.Errorf(codes.Unimplemented, "method GetWorkflowLogs not implemented")
+}
 func (*UnimplementedWorkflowServiceServer) CreateWorkflowTemplate(ctx context.Context, req *CreateWorkflowTemplateRequest) (*WorkflowTemplate, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method CreateWorkflowTemplate not implemented")
 }
@@ -697,6 +844,27 @@ func (x *workflowServiceWatchWorkflowServer) Send(m *Workflow) error {
 	return x.ServerStream.SendMsg(m)
 }
 
+func _WorkflowService_GetWorkflowLogs_Handler(srv interface{}, stream grpc.ServerStream) error {
+	m := new(GetWorkflowLogsRequest)
+	if err := stream.RecvMsg(m); err != nil {
+		return err
+	}
+	return srv.(WorkflowServiceServer).GetWorkflowLogs(m, &workflowServiceGetWorkflowLogsServer{stream})
+}
+
+type WorkflowService_GetWorkflowLogsServer interface {
+	Send(*LogEntry) error
+	grpc.ServerStream
+}
+
+type workflowServiceGetWorkflowLogsServer struct {
+	grpc.ServerStream
+}
+
+func (x *workflowServiceGetWorkflowLogsServer) Send(m *LogEntry) error {
+	return x.ServerStream.SendMsg(m)
+}
+
 func _WorkflowService_CreateWorkflowTemplate_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(CreateWorkflowTemplateRequest)
 	if err := dec(in); err != nil {
@@ -830,6 +998,11 @@ var _WorkflowService_serviceDesc = grpc.ServiceDesc{
 			Handler:       _WorkflowService_WatchWorkflow_Handler,
 			ServerStreams: true,
 		},
+		{
+			StreamName:    "GetWorkflowLogs",
+			Handler:       _WorkflowService_GetWorkflowLogs_Handler,
+			ServerStreams: true,
+		},
 	},
 	Metadata: "workflow.proto",
 }

api/workflow.pb.gw.go

@@ -292,6 +292,74 @@ func request_WorkflowService_WatchWorkflow_0(ctx context.Context, marshaler runt
 
 }
 
+var (
+	filter_WorkflowService_GetWorkflowLogs_0 = &utilities.DoubleArray{Encoding: map[string]int{"namespace": 0, "name": 1, "podName": 2}, Base: []int{1, 1, 2, 3, 0, 0, 0}, Check: []int{0, 1, 1, 1, 2, 3, 4}}
+)
+
+func request_WorkflowService_GetWorkflowLogs_0(ctx context.Context, marshaler runtime.Marshaler, client WorkflowServiceClient, req *http.Request, pathParams map[string]string) (WorkflowService_GetWorkflowLogsClient, runtime.ServerMetadata, error) {
+	var protoReq GetWorkflowLogsRequest
+	var metadata runtime.ServerMetadata
+
+	var (
+		val string
+		ok  bool
+		err error
+		_   = err
+	)
+
+	val, ok = pathParams["namespace"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "namespace")
+	}
+
+	protoReq.Namespace, err = runtime.String(val)
+
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "namespace", err)
+	}
+
+	val, ok = pathParams["name"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "name")
+	}
+
+	protoReq.Name, err = runtime.String(val)
+
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "name", err)
+	}
+
+	val, ok = pathParams["podName"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "podName")
+	}
+
+	protoReq.PodName, err = runtime.String(val)
+
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "podName", err)
+	}
+
+	if err := req.ParseForm(); err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+	if err := runtime.PopulateQueryParameters(&protoReq, req.Form, filter_WorkflowService_GetWorkflowLogs_0); err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+
+	stream, err := client.GetWorkflowLogs(ctx, &protoReq)
+	if err != nil {
+		return nil, metadata, err
+	}
+	header, err := stream.Header()
+	if err != nil {
+		return nil, metadata, err
+	}
+	metadata.HeaderMD = header
+	return stream, metadata, nil
+
+}
+
 func request_WorkflowService_CreateWorkflowTemplate_0(ctx context.Context, marshaler runtime.Marshaler, client WorkflowServiceClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
 	var protoReq CreateWorkflowTemplateRequest
 	var metadata runtime.ServerMetadata
@@ -845,6 +913,13 @@ func RegisterWorkflowServiceHandlerServer(ctx context.Context, mux *runtime.Serv
 		return
 	})
 
+	mux.Handle("GET", pattern_WorkflowService_GetWorkflowLogs_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		err := status.Error(codes.Unimplemented, "streaming calls are not yet supported in the in-process transport")
+		_, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+		return
+	})
+
 	mux.Handle("POST", pattern_WorkflowService_CreateWorkflowTemplate_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
 		ctx, cancel := context.WithCancel(req.Context())
 		defer cancel()
@@ -1086,6 +1161,26 @@ func RegisterWorkflowServiceHandlerClient(ctx context.Context, mux *runtime.Serv
 
 	})
 
+	mux.Handle("GET", pattern_WorkflowService_GetWorkflowLogs_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		rctx, err := runtime.AnnotateContext(ctx, mux, req)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := request_WorkflowService_GetWorkflowLogs_0(rctx, inboundMarshaler, client, req, pathParams)
+		ctx = runtime.NewServerMetadataContext(ctx, md)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_WorkflowService_GetWorkflowLogs_0(ctx, mux, outboundMarshaler, w, req, func() (proto.Message, error) { return resp.Recv() }, mux.GetForwardResponseOptions()...)
+
+	})
+
 	mux.Handle("POST", pattern_WorkflowService_CreateWorkflowTemplate_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
 		ctx, cancel := context.WithCancel(req.Context())
 		defer cancel()
@@ -1218,6 +1313,8 @@ var (
 
 	pattern_WorkflowService_WatchWorkflow_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 1, 0, 4, 1, 5, 2, 2, 3, 1, 0, 4, 1, 5, 4, 2, 5}, []string{"apis", "v1beta1", "namespace", "workflows", "name", "watch"}, "", runtime.AssumeColonVerbOpt(true)))
 
+	pattern_WorkflowService_GetWorkflowLogs_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 1, 0, 4, 1, 5, 2, 2, 3, 1, 0, 4, 1, 5, 4, 2, 5, 1, 0, 4, 1, 5, 6, 2, 7}, []string{"apis", "v1beta1", "namespace", "workflows", "name", "pods", "podName", "log"}, "", runtime.AssumeColonVerbOpt(true)))
+
 	pattern_WorkflowService_CreateWorkflowTemplate_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 1, 0, 4, 1, 5, 2, 2, 3}, []string{"apis", "v1beta1", "namespace", "workflow_templates"}, "", runtime.AssumeColonVerbOpt(true)))
 
 	pattern_WorkflowService_CreateWorkflowTemplateVersion_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 1, 0, 4, 1, 5, 2, 2, 3, 1, 0, 4, 1, 5, 4, 2, 5}, []string{"apis", "v1beta1", "namespace", "workflow_templates", "workflowTemplate.uid", "versions"}, "", runtime.AssumeColonVerbOpt(true)))
@@ -1240,6 +1337,8 @@ var (
 
 	forward_WorkflowService_WatchWorkflow_0 = runtime.ForwardResponseStream
 
+	forward_WorkflowService_GetWorkflowLogs_0 = runtime.ForwardResponseStream
+
 	forward_WorkflowService_CreateWorkflowTemplate_0 = runtime.ForwardResponseMessage
 
 	forward_WorkflowService_CreateWorkflowTemplateVersion_0 = runtime.ForwardResponseMessage

api/workflow.proto

@@ -32,6 +32,12 @@ service WorkflowService {
         };
     }
 
+    rpc GetWorkflowLogs (GetWorkflowLogsRequest) returns (stream LogEntry) {
+        option (google.api.http) = {
+            get: "/apis/v1beta1/{namespace}/workflows/{name}/pods/{podName}/log"
+        };
+    }
+
     rpc CreateWorkflowTemplate (CreateWorkflowTemplateRequest) returns (WorkflowTemplate) {
         option (google.api.http) = {
             post: "/apis/v1beta1/{namespace}/workflow_templates"
@@ -83,6 +89,13 @@ message WatchWorkflowRequest {
     string name = 2;
 }
 
+message GetWorkflowLogsRequest {
+    string namespace = 1;
+    string name = 2;
+    string podName = 3;
+    string containerName = 4;
+}
+
 message ListWorkflowsRequest {
     string namespace = 1;
     string workflowTemplateUid = 2;
@@ -93,6 +106,10 @@ message ListWorkflowsResponse {
     repeated Workflow workflows = 2;
 }
 
+message LogEntry {
+    string content = 1;
+}
+
 message Workflow {
     string uid = 1;
     string name = 2;

api/workflow.swagger.json

@@ -298,6 +298,48 @@
         ]
       }
     },
+    "/apis/v1beta1/{namespace}/workflows/{name}/pods/{podName}/log": {
+      "get": {
+        "operationId": "GetWorkflowLogs",
+        "responses": {
+          "200": {
+            "description": "A successful response.(streaming responses)",
+            "schema": {
+              "$ref": "#/x-stream-definitions/apiLogEntry"
+            }
+          }
+        },
+        "parameters": [
+          {
+            "name": "namespace",
+            "in": "path",
+            "required": true,
+            "type": "string"
+          },
+          {
+            "name": "name",
+            "in": "path",
+            "required": true,
+            "type": "string"
+          },
+          {
+            "name": "podName",
+            "in": "path",
+            "required": true,
+            "type": "string"
+          },
+          {
+            "name": "containerName",
+            "in": "query",
+            "required": false,
+            "type": "string"
+          }
+        ],
+        "tags": [
+          "WorkflowService"
+        ]
+      }
+    },
     "/apis/v1beta1/{namespace}/workflows/{name}/watch": {
       "get": {
         "operationId": "WatchWorkflow",
@@ -375,6 +417,14 @@
         }
       }
     },
+    "apiLogEntry": {
+      "type": "object",
+      "properties": {
+        "content": {
+          "type": "string"
+        }
+      }
+    },
     "apiParameter": {
       "type": "object",
       "properties": {
@@ -466,6 +516,18 @@
     }
   },
   "x-stream-definitions": {
+    "apiLogEntry": {
+      "type": "object",
+      "properties": {
+        "result": {
+          "$ref": "#/definitions/apiLogEntry"
+        },
+        "error": {
+          "$ref": "#/definitions/runtimeStreamError"
+        }
+      },
+      "title": "Stream result of apiLogEntry"
+    },
     "apiWorkflow": {
       "type": "object",
       "properties": {

kube/pod.go

@@ -0,0 +1,15 @@
+package kube
+
+import (
+	"io"
+
+	v1 "k8s.io/api/core/v1"
+)
+
+func (c *Client) GetPodLogs(namespace, podName, containerName string) (io.ReadCloser, error) {
+	return c.CoreV1().Pods(namespace).GetLogs(podName, &v1.PodLogOptions{
+		Container:  containerName,
+		Follow:     true,
+		Timestamps: true,
+	}).Stream()
+}

manager/workflow_manager.go

@@ -1,6 +1,7 @@
 package manager
 
 import (
+	"bufio"
 	"encoding/json"
 	"fmt"
 	"os"
@@ -134,6 +135,23 @@ func (r *ResourceManager) WatchWorkflow(namespace, name string) (<-chan *model.W
 	return workflowWatcher, nil
 }
 
+func (r *ResourceManager) GetWorkflowLogs(namespace, name, podName, containerName string) (<-chan *model.LogEntry, error) {
+	stream, err := r.kubeClient.GetPodLogs(namespace, podName, containerName)
+
+	logWatcher := make(chan *model.LogEntry)
+	if err != nil {
+		go func() {
+			scanner := bufio.NewScanner(stream)
+			for scanner.Scan() {
+				logWatcher <- &model.LogEntry{Content: scanner.Text()}
+			}
+			close(logWatcher)
+		}()
+	}
+
+	return logWatcher, nil
+}
+
 func (r *ResourceManager) ListWorkflows(namespace, workflowTemplateUID string) (workflows []*model.Workflow, err error) {
 	opts := &kube.WorkflowOptions{}
 	if workflowTemplateUID != "" {

model/log_entry.go

@@ -0,0 +1,5 @@
+package model
+
+type LogEntry struct {
+	Content string
+}

server/workflow_server.go

@@ -103,6 +103,31 @@ func (s *WorkflowServer) WatchWorkflow(req *api.WatchWorkflowRequest, stream api
 	return nil
 }
 
+func (s *WorkflowServer) GetWorkflowLogs(req *api.GetWorkflowLogsRequest, stream api.WorkflowService_GetWorkflowLogsServer) error {
+	watcher, err := s.resourceManager.GetWorkflowLogs(req.Namespace, req.Name, req.PodName, req.ContainerName)
+	if errors.As(err, &userError) {
+		return userError.GRPCError()
+	}
+
+	le := &model.LogEntry{}
+	ticker := time.NewTicker(time.Second)
+	for {
+		select {
+		case le = <-watcher:
+		case <-ticker.C:
+		}
+
+		if le == nil {
+			break
+		}
+		if err := stream.Send(&api.LogEntry{Content: le.Content}); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
 func (s *WorkflowServer) ListWorkflows(ctx context.Context, req *api.ListWorkflowsRequest) (*api.ListWorkflowsResponse, error) {
 	workflows, err := s.resourceManager.ListWorkflows(req.Namespace, req.WorkflowTemplateUid)
 	if errors.As(err, &userError) {