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contrib: add list of check register flows

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Daniel Nephin 2021-08-11 16:48:43 -04:00
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commit b1b9ca70b5
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contributing/service-discovery/README.md
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This section is still a work in progress.
1. [catalog](./catalog.md)
1. [Catalog](./catalog.md)
1. [DNS Interface](./dns.md)
1. health checking
1. [Health Checks](./health-checks.md)

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contributing/service-discovery/health-checks.md Normal file
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# Health Checks
This section is still a work in progress.
## Check Registration flows
There are many paths to register a check. Many of these use different struct
types, so to properly validate and convert a check, all of these paths must
be reviewed and tested.
1. API [/v1/catalog/register](https://www.consul.io/api-docs/catalog#register-entity) - the `Checks`
field on `structs.RegisterRequest`. The entrypoint is `CatalogRegister` in
[agent/catalog_endpoint.go].
2. API [/v1/agent/check/register](https://www.consul.io/api-docs/agent/check#register-check) - the entrypoint
is `AgentRegisterCheck` in [agent/agent_endpoint.go]
3. API [/v1/agent/service/register](https://www.consul.io/api-docs/agent/service#register-service) -
the `Check` or `Checks` fields on `ServiceDefinition`. The entrypoint is `AgentRegisterService`
in [agent/agent_endpoint.go].
4. Config [Checks](https://www.consul.io/docs/discovery/checks) - the `Checks` and `Check` fields
on `config.Config` in [agent/config/config.go].
5. Config [Service.Checks](https://www.consul.io/docs/discovery/services) - the
`Checks` and `Check` fields on `ServiceDefinition` in [agent/config/config.go].
6. CLI [consul services register](https://www.consul.io/commands/services/register) - the
`Checks` and `Check` fields on `api.AgentServiceRegistration`. The entrypoint is
`ServicesFromFiles` in [command/services/config.go].
[agent/catalog_endpoint.go]: https://github.com/hashicorp/consul/blob/main/agent/catalog_endpoint.go
[agent/agent_endpoint.go]: https://github.com/hashicorp/consul/blob/main/agent/agent_endpoint.go
[agent/config/config.go]: https://github.com/hashicorp/consul/blob/main/agent/config/config.go
[command/services/config.go]: https://github.com/hashicorp/consul/blob/main/command/services/config.go