add WorkflowUserMetric (#319)

* add WorkflowUserMetric

* fix metric suffix

* bot: regenerate protobuf files

* add USER_METRIC_TYPE_UNSPECIFIED

* bot: regenerate protobuf files

* update WorkflowUserMetric value to double

* drop histogram support

* bot: regenerate protobuf files

---------

Co-authored-by: app-token-issuer-engops[bot] <144731339+app-token-issuer-engops[bot]@users.noreply.github.com>

Author: karen-stepanyan

workflows/go/generate.go

@@ -29,6 +29,7 @@ package workflows
 //go:generate protoc --proto_path=../ --go_out=./ --go_opt=module=github.com/smartcontractkit/chainlink-protos/workflows/go ../workflows/v2/capability_execution_started.proto
 //go:generate protoc --proto_path=../ --go_out=./ --go_opt=module=github.com/smartcontractkit/chainlink-protos/workflows/go ../workflows/v2/capability_execution_finished.proto
 //go:generate protoc --proto_path=../ --go_out=./ --go_opt=module=github.com/smartcontractkit/chainlink-protos/workflows/go ../workflows/v2/workflow_user_log.proto
+//go:generate protoc --proto_path=../ --go_out=./ --go_opt=module=github.com/smartcontractkit/chainlink-protos/workflows/go ../workflows/v2/workflow_user_metric.proto
 //go:generate protoc --proto_path=../ --go_out=./ --go_opt=module=github.com/smartcontractkit/chainlink-protos/workflows/go ../workflows/v2/xxx_no_send.proto
 
 // sources/v1 - workflow metadata source service

workflows/go/v2/workflow_user_metric.pb.go

@@ -0,0 +1,26 @@
+syntax = "proto3";
+
+package workflows.v2;
+
+import "workflows/v2/cre_info.proto";
+import "workflows/v2/workflow_key.proto";
+
+option go_package = "github.com/smartcontractkit/chainlink-protos/workflows/go/v2";
+
+enum UserMetricType {
+  USER_METRIC_TYPE_UNSPECIFIED = 0;
+  USER_METRIC_TYPE_COUNTER = 1;
+  USER_METRIC_TYPE_GAUGE = 2;
+}
+
+message WorkflowUserMetric {
+  CreInfo creInfo = 1;
+  WorkflowKey workflow = 2;
+  string workflowExecutionID = 3;
+  string timestamp = 4;
+
+  string name = 5;
+  double value = 6;
+  UserMetricType type = 7;
+  map<string, string> labels = 8;
+}