Add workflow start delay option (#294)

Author: santiagodoldan

lib/temporal/client.rb

@@ -41,6 +41,7 @@ def initialize(config)
     # @option options [Hash] :timeouts check Temporal::Configuration::DEFAULT_TIMEOUTS
     # @option options [Hash] :headers
     # @option options [Hash] :search_attributes
+    # @option options [Integer] :start_delay determines the amount of seconds to wait before initiating a Workflow
     #
     # @return [String] workflow's run ID
     def start_workflow(workflow, *input, options: {}, **args)
@@ -67,6 +68,7 @@ def start_workflow(workflow, *input, options: {}, **args)
           headers: config.header_propagator_chain.inject(execution_options.headers),
           memo: execution_options.memo,
           search_attributes: Workflow::Context::Helpers.process_search_attributes(execution_options.search_attributes),
+          start_delay: execution_options.start_delay
         )
       else
         raise ArgumentError, 'If signal_input is provided, you must also provide signal_name' if signal_name.nil?
@@ -85,7 +87,8 @@ def start_workflow(workflow, *input, options: {}, **args)
           memo: execution_options.memo,
           search_attributes: Workflow::Context::Helpers.process_search_attributes(execution_options.search_attributes),
           signal_name: signal_name,
-          signal_input: signal_input
+          signal_input: signal_input,
+          start_delay: execution_options.start_delay
         )
       end
 

lib/temporal/connection/grpc.rb

@@ -120,7 +120,8 @@ def start_workflow_execution(
         headers: nil,
         cron_schedule: nil,
         memo: nil,
-        search_attributes: nil
+        search_attributes: nil,
+        start_delay: nil
       )
         request = Temporalio::Api::WorkflowService::V1::StartWorkflowExecutionRequest.new(
           identity: identity,
@@ -137,6 +138,7 @@ def start_workflow_execution(
           workflow_execution_timeout: execution_timeout,
           workflow_run_timeout: run_timeout,
           workflow_task_timeout: task_timeout,
+          workflow_start_delay: start_delay,
           request_id: SecureRandom.uuid,
           header: Temporalio::Api::Common::V1::Header.new(
             fields: converter.to_payload_map(headers || {})
@@ -379,7 +381,8 @@ def signal_with_start_workflow_execution(
         headers: nil,
         cron_schedule: nil,
         memo: nil,
-        search_attributes: nil
+        search_attributes: nil,
+        start_delay: nil
       )
         proto_header_fields = if headers.nil?
                                 converter.to_payload_map({})
@@ -406,6 +409,7 @@ def signal_with_start_workflow_execution(
           workflow_execution_timeout: execution_timeout,
           workflow_run_timeout: run_timeout,
           workflow_task_timeout: task_timeout,
+          workflow_start_delay: start_delay,
           request_id: SecureRandom.uuid,
           header: Temporalio::Api::Common::V1::Header.new(
             fields: proto_header_fields

lib/temporal/execution_options.rb

@@ -3,7 +3,8 @@
 
 module Temporal
   class ExecutionOptions
-    attr_reader :name, :namespace, :task_queue, :retry_policy, :timeouts, :headers, :memo, :search_attributes
+    attr_reader :name, :namespace, :task_queue, :retry_policy, :timeouts, :headers, :memo, :search_attributes,
+                :start_delay
 
     def initialize(object, options, defaults = nil)
       # Options are treated as overrides and take precedence
@@ -15,6 +16,7 @@ def initialize(object, options, defaults = nil)
       @headers = options[:headers] || {}
       @memo = options[:memo] || {}
       @search_attributes = options[:search_attributes] || {}
+      @start_delay = options[:start_delay] || 0
 
       # For Temporal::Workflow and Temporal::Activity use defined values as the next option
       if has_executable_concern?(object)

spec/unit/lib/temporal/client_spec.rb

@@ -52,20 +52,21 @@ def inject!(header)
         subject.start_workflow(TestStartWorkflow, 42)
         expect(connection)
           .to have_received(:start_workflow_execution)
-                .with(
-                  namespace: 'default-test-namespace',
-                  workflow_id: an_instance_of(String),
-                  workflow_name: 'TestStartWorkflow',
-                  task_queue: 'default-test-task-queue',
-                  input: [42],
-                  task_timeout: config.timeouts[:task],
-                  run_timeout: config.timeouts[:run],
-                  execution_timeout: config.timeouts[:execution],
-                  workflow_id_reuse_policy: nil,
-                  headers: { 'test' => 'asdf' },
-                  memo: {},
-                  search_attributes: {},
-                )
+          .with(
+            namespace: 'default-test-namespace',
+            workflow_id: an_instance_of(String),
+            workflow_name: 'TestStartWorkflow',
+            task_queue: 'default-test-task-queue',
+            input: [42],
+            task_timeout: config.timeouts[:task],
+            run_timeout: config.timeouts[:run],
+            execution_timeout: config.timeouts[:execution],
+            workflow_id_reuse_policy: nil,
+            headers: { 'test' => 'asdf' },
+            memo: {},
+            search_attributes: {},
+            start_delay: 0
+          )
       end
     end
 
@@ -94,6 +95,7 @@ def inject!(header)
             headers: {},
             memo: {},
             search_attributes: {},
+            start_delay: 0
           )
       end
 
@@ -109,6 +111,7 @@ def inject!(header)
             workflow_id_reuse_policy: :reject,
             memo: { 'MemoKey1' => 'MemoValue1' },
             search_attributes: { 'SearchAttribute1' => 256 },
+            start_delay: 10
           }
         )
 
@@ -127,6 +130,7 @@ def inject!(header)
             headers: { 'Foo' => 'Bar' },
             memo: { 'MemoKey1' => 'MemoValue1' },
             search_attributes: { 'SearchAttribute1' => 256 },
+            start_delay: 10
           )
       end
 
@@ -154,6 +158,7 @@ def inject!(header)
             headers: {},
             memo: {},
             search_attributes: {},
+            start_delay: 0
           )
       end
 
@@ -175,6 +180,7 @@ def inject!(header)
             headers: {},
             memo: {},
             search_attributes: {},
+            start_delay: 0
           )
       end
 
@@ -198,6 +204,7 @@ def inject!(header)
             headers: {},
             memo: {},
             search_attributes: {},
+            start_delay: 0
           )
       end
     end
@@ -225,6 +232,7 @@ def inject!(header)
             headers: {},
             memo: {},
             search_attributes: {},
+            start_delay: 0
           )
       end
     end
@@ -255,6 +263,7 @@ def expect_signal_with_start(expected_arguments, expected_signal_argument)
           search_attributes: {},
           signal_name: 'the question',
           signal_input: expected_signal_argument,
+          start_delay: 0
         )
     end
 

spec/unit/lib/temporal/execution_options_spec.rb

@@ -99,10 +99,11 @@ class TestExecutionOptionsWorkflow < Temporal::Workflow
             task_queue: 'test-task-queue',
             retry_policy: { interval: 1, backoff: 2, max_attempts: 5 },
             timeouts: { start_to_close: 10 },
-            headers: { 'TestHeader' => 'Test' }
+            headers: { 'TestHeader' => 'Test' },
+            start_delay: 10
           }
         end
-  
+
         it 'is initialized with full options' do
           expect(subject.name).to eq(options[:name])
           expect(subject.namespace).to eq(options[:namespace])
@@ -113,12 +114,13 @@ class TestExecutionOptionsWorkflow < Temporal::Workflow
           expect(subject.retry_policy.max_attempts).to eq(options[:retry_policy][:max_attempts])
           expect(subject.timeouts).to eq(options[:timeouts])
           expect(subject.headers).to eq(options[:headers])
+          expect(subject.start_delay).to eq(options[:start_delay])
         end
       end
-  
+
       context 'when retry policy options are invalid' do
         let(:options) { { retry_policy: { max_attempts: 10 } } }
-  
+
         it 'raises' do
           expect { subject }.to raise_error(
             Temporal::RetryPolicy::InvalidRetryPolicy,

spec/unit/lib/temporal/grpc_spec.rb

@@ -66,6 +66,7 @@
         execution_timeout: 1,
         run_timeout: 2,
         task_timeout: 3,
+        start_delay: 10,
         memo: {},
         search_attributes: {
           'foo-int-attribute' => 256,
@@ -90,6 +91,7 @@
         expect(request.workflow_execution_timeout.seconds).to eq(1)
         expect(request.workflow_run_timeout.seconds).to eq(2)
         expect(request.workflow_task_timeout.seconds).to eq(3)
+        expect(request.workflow_start_delay.seconds).to eq(10)
         expect(request.workflow_id_reuse_policy).to eq(:WORKFLOW_ID_REUSE_POLICY_REJECT_DUPLICATE)
         expect(request.search_attributes.indexed_fields).to eq({
           'foo-int-attribute' => Temporalio::Api::Common::V1::Payload.new(data: '256', metadata: { 'encoding' => 'json/plain' }),
@@ -138,6 +140,7 @@
         execution_timeout: 1,
         run_timeout: 2,
         task_timeout: 3,
+        start_delay: 10,
         workflow_id_reuse_policy: :allow,
         signal_name: 'the question',
         signal_input: 'what do you get if you multiply six by nine?'
@@ -153,6 +156,7 @@
         expect(request.workflow_execution_timeout.seconds).to eq(1)
         expect(request.workflow_run_timeout.seconds).to eq(2)
         expect(request.workflow_task_timeout.seconds).to eq(3)
+        expect(request.workflow_start_delay.seconds).to eq(10)
         expect(request.signal_name).to eq('the question')
         expect(request.signal_input.payloads[0].data).to eq('"what do you get if you multiply six by nine?"')
         expect(request.workflow_id_reuse_policy).to eq(:WORKFLOW_ID_REUSE_POLICY_ALLOW_DUPLICATE)