upgrade-a-microservice-to-v1220

name: Upgrade a Microservice to v1.22.0 description: Upgrades a single microservice to v1.22.0.

CRITICAL: Read and analyze this microservice before starting. Do NOT explore or analyze other microservices. The instructions in this skill are self-contained to this microservice.

IMPORTANT: This skill affects a single microservice and all file names are relative to the directory of the microservice.

Workflow

Copy this checklist and track your progress:

Upgrade a microservice to v1.22.0:
- [ ] Step 1: Verify version
- [ ] Step 2: Delete and rename files
- [ ] Step 3: Modify service.go
- [ ] Step 4: Follow add-microservice skill
- [ ] Step 5: Transfer version
- [ ] Step 6: Transfer functions
- [ ] Step 7: Transfer webs
- [ ] Step 8: Transfer metrics
- [ ] Step 9: Transfer configs
- [ ] Step 10: Transfer events
- [ ] Step 11: Transfer sinks
- [ ] Step 12: Delete service.yaml
- [ ] Step 13: Clients no longer accept contentType

Step 1: Verify Version

If there is no service.yaml in the current directory, the microservice is already upgraded to v1.22.0. Exit without doing anything.

Step 2: Delete and Rename Files

Delete doc.go, service-gen.go, myserviceapi/clients-gen.go, version-gen_test.go and the intermediate subdirectory.

Rename resources/embed-gen.go to resources/embed.go.

Step 3: Modify service.go

In service.go:

• Modify the Service struct definition and replace the anonymous field *intermediate.Intermediate with *connector.Connector instead.
• Remove the import statement of the intermediate "github.com/mycompany/myproject/myservice/intermediate".
• Add an import statement for the connector "github.com/microbus-io/fabric/connector"

Step 4: Follow microbus/add-microservice Skill

Read the general properties from service.yaml. Keep in mind the hostname and description of the microservice as you follow the steps of the microbus/add-microservice skill next.

Follow only the following steps from the microbus/add-microservice skill, in this order:

• Prepare client.go
• Prepare intermediate.go
• Prepare mock.go
• Prepare service_test.go

Step 5: Transfer Version

Take the value of the const Version from version-gen.go, increment it by 1, and set the new value to the const Version in intermediate.go. Then, delete version-gen.go.

Step 6: Transfer Functions

For each definition in the functions section in service.yaml, perform the microbus/add-function skill.

• Skip the step of implementation in service.go because the implementation is already there. Do add the MARKER: MyFunction comment in service.go next to the original implementation
• Skip the step of testing in service_test.go because a test is already there. Do add the MARKER: MyFunction comment in service_test.go next to the original test
• Skip the documentation and versioning steps
• If the route of the endpoint contains a greedy path argument ending with a + sign, e.g. {suffix+}, change the + to ...

Step 7: Transfer Webs

For each definition in the webs section in service.yaml, perform the microbus/add-web skill.

• Skip the step of implementation in service.go because the implementation is already there. Do add the MARKER: MyWeb comment in service.go next to the original implementation
• Skip the step of testing in service_test.go because a test is already there. Do add the MARKER: MyWeb comment in service_test.go next to the original test
• Skip the documentation and versioning steps
• If the route of the endpoint contains a greedy path argument ending with a + sign, e.g. {suffix+}, change the + to ...

Step 8: Transfer Metrics

For each definition in the metrics section in service.yaml, perform the microbus/add-metric skill.

• If the metric is observable, it will already have OnObserveMyMetric implemented in service.go. Do not overwrite the original implementation. Bind the original implementation in intermediate.go. Do add the MARKER: MyMetric comment in service.go next to the original implementation.
• Skip the documentation and versioning steps.

The API to increment counter metrics may require a change from svc.AddMetric to svc.IncrementMetric. Make any necessary changes in service.go.

Step 9: Transfer Configs

For each definition in the configs section in service.yaml, perform the microbus/add-config skill.

• If the config has a callback, it will already have OnChangedMyConfig implemented in service.go. Skip the step to implement the callback. Do not overwrite the original implementation. Wire up the original implementation in intermediate.go. Do add the MARKER: MyConfig comment in service.go next to the original implementation
• Skip the documentation and versioning steps

Step 10: Transfer Events

For each definition in the events section in service.yaml, perform the microbus/add-outbound-event skill.

• Skip the step of triggering the event in service.go because the implementation is already there
• Skip the step of testing in service_test.go because a test is already there. Do add the MARKER: OnMyEvent comment in service_test.go next to the original test
• Skip the documentation and versioning steps
• If the route of the endpoint contains a greedy path argument ending with a + sign, e.g. {suffix+}, change the + to ...

Step 11: Transfer Sinks

For each definition in the sinks section in service.yaml, perform the microbus/add-inbound-event skill.

• Skip the step of implementation in service.go because the implementation is already there. Do add the MARKER: OnMyEvent comment in service.go next to the original implementation
• Skip the step of testing in service_test.go because a test is already there. Do add the MARKER: OnMyEvent comment in service_test.go next to the original test
• Skip the documentation and versioning steps
• If the route of the endpoint contains a greedy path argument ending with a + sign, e.g. {suffix+}, change the + to ...

Step 12: Delete service.yaml

Finally, delete service.yaml.

Step 13: Clients No Longer Accept contentType

V1.22.0 clients no longer accept a contentType parameter for web endpoints. Remove the superfluous argument when calling web endpoints via a client. Use WithOptions(pub.ContentType(...))) if the content type was not "".