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Calling a flow using Groovy Script in Mule 4

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I need to make a call to a flow using groovy script in mule 4. Can someone let me know if they have tried it using Mule 4

mule

share|improve this question

asked Mar 24 at 1:16

Piyush SinghPiyush Singh

111

add a comment | 

0

I need to make a call to a flow using groovy script in mule 4. Can someone let me know if they have tried it using Mule 4

mule

share|improve this question

asked Mar 24 at 1:16

Piyush SinghPiyush Singh

111

add a comment | 

I need to make a call to a flow using groovy script in mule 4. Can someone let me know if they have tried it using Mule 4

mule

share|improve this question

asked Mar 24 at 1:16

Piyush SinghPiyush Singh

111

share|improve this question

asked Mar 24 at 1:16

Piyush SinghPiyush Singh

111

share|improve this question

asked Mar 24 at 1:16

Piyush SinghPiyush Singh

111

asked Mar 24 at 1:16

Piyush SinghPiyush Singh

111

asked Mar 24 at 1:16

Piyush SinghPiyush Singh

111

1 Answer
1

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1

It is possible, but I would HIGHLY recommend that you do NOT do it.

You will have to dig deep down into the Mule Java APIs and couple yourself to them and also add a lot of your own error handling etc. and be wary of platform updates and the if the Java API changes.

Personally I would restructure you app to only have 'business logic' in scripts and let Mule do the flow lookups elsewhere.

You can even lookup flows in dataweave.

But here is a rough working example(Note you will have to harden this code yourself):

<flow name="test-flow">
 <scheduler>
 <scheduling-strategy>
 <fixed-frequency frequency="100000"></fixed-frequency>
 </scheduling-strategy>
 </scheduler>
 <set-payload value="bla bla" />
 <scripting:execute engine="groovy" doc:name="Toggle flow" doc:id="2eb6f071-bdef-4d3d-926d-2565fcd62d33">
 <scripting:code>
 import org.mule.runtime.api.message.Message;
 import org.mule.runtime.core.api.event.CoreEvent;
 import org.mule.runtime.core.api.event.EventContextFactory;
 flow=registry.lookupByName(&quot;another-flow&quot;).get();
 thisflow=registry.lookupByName(&quot;test-flow&quot;).get();
 msg = Message.builder().value(payload).build();
 event =CoreEvent.builder(EventContextFactory.create(thisflow,
 org.mule.runtime.dsl.api.component.config.DefaultComponentLocation.fromSingleComponent("add-location"))).message(msg).build();
 result =flow.process(event);
 </scripting:code>
 </scripting:execute>
 </flow>

 <flow name="another-flow">
 <logger level="ERROR" message="Another Flow #[payload]" />
 </flow>

You need to fetch the current flow and the flow you want to call.

Using the Mule APIs - construct a Mule Event, Messgae, payload etc. You will also need to add any attributes you need etc.

share|improve this answer

edited Mar 25 at 21:48

answered Mar 25 at 16:11

Ryan CarterRyan Carter

9,96521523

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks Ryan for your response. I was able to achieve the functionality by using Java class instead of groovy.
  
  – Piyush Singh
  Mar 26 at 15:12
  

  
  
  
  

add a comment | 

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1

It is possible, but I would HIGHLY recommend that you do NOT do it.

You will have to dig deep down into the Mule Java APIs and couple yourself to them and also add a lot of your own error handling etc. and be wary of platform updates and the if the Java API changes.

Personally I would restructure you app to only have 'business logic' in scripts and let Mule do the flow lookups elsewhere.

You can even lookup flows in dataweave.

But here is a rough working example(Note you will have to harden this code yourself):

<flow name="test-flow">
 <scheduler>
 <scheduling-strategy>
 <fixed-frequency frequency="100000"></fixed-frequency>
 </scheduling-strategy>
 </scheduler>
 <set-payload value="bla bla" />
 <scripting:execute engine="groovy" doc:name="Toggle flow" doc:id="2eb6f071-bdef-4d3d-926d-2565fcd62d33">
 <scripting:code>
 import org.mule.runtime.api.message.Message;
 import org.mule.runtime.core.api.event.CoreEvent;
 import org.mule.runtime.core.api.event.EventContextFactory;
 flow=registry.lookupByName(&quot;another-flow&quot;).get();
 thisflow=registry.lookupByName(&quot;test-flow&quot;).get();
 msg = Message.builder().value(payload).build();
 event =CoreEvent.builder(EventContextFactory.create(thisflow,
 org.mule.runtime.dsl.api.component.config.DefaultComponentLocation.fromSingleComponent("add-location"))).message(msg).build();
 result =flow.process(event);
 </scripting:code>
 </scripting:execute>
 </flow>

 <flow name="another-flow">
 <logger level="ERROR" message="Another Flow #[payload]" />
 </flow>

You need to fetch the current flow and the flow you want to call.

Using the Mule APIs - construct a Mule Event, Messgae, payload etc. You will also need to add any attributes you need etc.

share|improve this answer

edited Mar 25 at 21:48

answered Mar 25 at 16:11

Ryan CarterRyan Carter

9,96521523

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks Ryan for your response. I was able to achieve the functionality by using Java class instead of groovy.
  
  – Piyush Singh
  Mar 26 at 15:12
  

  
  
  
  

add a comment | 

1

It is possible, but I would HIGHLY recommend that you do NOT do it.

You will have to dig deep down into the Mule Java APIs and couple yourself to them and also add a lot of your own error handling etc. and be wary of platform updates and the if the Java API changes.

Personally I would restructure you app to only have 'business logic' in scripts and let Mule do the flow lookups elsewhere.

You can even lookup flows in dataweave.

But here is a rough working example(Note you will have to harden this code yourself):

<flow name="test-flow">
 <scheduler>
 <scheduling-strategy>
 <fixed-frequency frequency="100000"></fixed-frequency>
 </scheduling-strategy>
 </scheduler>
 <set-payload value="bla bla" />
 <scripting:execute engine="groovy" doc:name="Toggle flow" doc:id="2eb6f071-bdef-4d3d-926d-2565fcd62d33">
 <scripting:code>
 import org.mule.runtime.api.message.Message;
 import org.mule.runtime.core.api.event.CoreEvent;
 import org.mule.runtime.core.api.event.EventContextFactory;
 flow=registry.lookupByName(&quot;another-flow&quot;).get();
 thisflow=registry.lookupByName(&quot;test-flow&quot;).get();
 msg = Message.builder().value(payload).build();
 event =CoreEvent.builder(EventContextFactory.create(thisflow,
 org.mule.runtime.dsl.api.component.config.DefaultComponentLocation.fromSingleComponent("add-location"))).message(msg).build();
 result =flow.process(event);
 </scripting:code>
 </scripting:execute>
 </flow>

 <flow name="another-flow">
 <logger level="ERROR" message="Another Flow #[payload]" />
 </flow>

You need to fetch the current flow and the flow you want to call.

Using the Mule APIs - construct a Mule Event, Messgae, payload etc. You will also need to add any attributes you need etc.

share|improve this answer

edited Mar 25 at 21:48

answered Mar 25 at 16:11

Ryan CarterRyan Carter

9,96521523

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks Ryan for your response. I was able to achieve the functionality by using Java class instead of groovy.
  
  – Piyush Singh
  Mar 26 at 15:12
  

  
  
  
  

add a comment | 

It is possible, but I would HIGHLY recommend that you do NOT do it.

You will have to dig deep down into the Mule Java APIs and couple yourself to them and also add a lot of your own error handling etc. and be wary of platform updates and the if the Java API changes.

Personally I would restructure you app to only have 'business logic' in scripts and let Mule do the flow lookups elsewhere.

You can even lookup flows in dataweave.

But here is a rough working example(Note you will have to harden this code yourself):

<flow name="test-flow">
 <scheduler>
 <scheduling-strategy>
 <fixed-frequency frequency="100000"></fixed-frequency>
 </scheduling-strategy>
 </scheduler>
 <set-payload value="bla bla" />
 <scripting:execute engine="groovy" doc:name="Toggle flow" doc:id="2eb6f071-bdef-4d3d-926d-2565fcd62d33">
 <scripting:code>
 import org.mule.runtime.api.message.Message;
 import org.mule.runtime.core.api.event.CoreEvent;
 import org.mule.runtime.core.api.event.EventContextFactory;
 flow=registry.lookupByName(&quot;another-flow&quot;).get();
 thisflow=registry.lookupByName(&quot;test-flow&quot;).get();
 msg = Message.builder().value(payload).build();
 event =CoreEvent.builder(EventContextFactory.create(thisflow,
 org.mule.runtime.dsl.api.component.config.DefaultComponentLocation.fromSingleComponent("add-location"))).message(msg).build();
 result =flow.process(event);
 </scripting:code>
 </scripting:execute>
 </flow>

 <flow name="another-flow">
 <logger level="ERROR" message="Another Flow #[payload]" />
 </flow>

You need to fetch the current flow and the flow you want to call.

Using the Mule APIs - construct a Mule Event, Messgae, payload etc. You will also need to add any attributes you need etc.

share|improve this answer

edited Mar 25 at 21:48

answered Mar 25 at 16:11

Ryan CarterRyan Carter

9,96521523

<flow name="test-flow">
 <scheduler>
 <scheduling-strategy>
 <fixed-frequency frequency="100000"></fixed-frequency>
 </scheduling-strategy>
 </scheduler>
 <set-payload value="bla bla" />
 <scripting:execute engine="groovy" doc:name="Toggle flow" doc:id="2eb6f071-bdef-4d3d-926d-2565fcd62d33">
 <scripting:code>
 import org.mule.runtime.api.message.Message;
 import org.mule.runtime.core.api.event.CoreEvent;
 import org.mule.runtime.core.api.event.EventContextFactory;
 flow=registry.lookupByName(&quot;another-flow&quot;).get();
 thisflow=registry.lookupByName(&quot;test-flow&quot;).get();
 msg = Message.builder().value(payload).build();
 event =CoreEvent.builder(EventContextFactory.create(thisflow,
 org.mule.runtime.dsl.api.component.config.DefaultComponentLocation.fromSingleComponent("add-location"))).message(msg).build();
 result =flow.process(event);
 </scripting:code>
 </scripting:execute>
 </flow>

 <flow name="another-flow">
 <logger level="ERROR" message="Another Flow #[payload]" />
 </flow>

share|improve this answer

edited Mar 25 at 21:48

answered Mar 25 at 16:11

Ryan CarterRyan Carter

9,96521523

answered Mar 25 at 16:11

Ryan CarterRyan Carter

9,96521523

answered Mar 25 at 16:11

Ryan CarterRyan Carter

9,96521523