[compute_ctl] Empty computes and /configure API #3963
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Test results for cf745b6:debug build: 212 tests run: 202 passed, 0 failed, 10 (full report)release build: 212 tests run: 202 passed, 0 failed, 10 (full report) |
lubennikovaav
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This commit adds an option to start compute without spec and then pass
it a valid spec via `POST /configure` API endpoint. This is a main
prerequisite for maintaining the pool of compute nodes in the
control-plane.
For example:
1. Start compute with
```shell
cargo run --bin compute_ctl -- -i no-compute \
-p http://localhost:9095 \
-D compute_pgdata \
-C "postgresql://[email protected]:5434/postgres" \
-b ./pg_install/v15/bin/postgres
```
2. Configure it with
```shell
curl -d "{\"spec\": $(cat ./compute-spec.json)}" http://localhost:3080/configure
```
Internally, it's implemented using a `Condvar` + `Mutex`. Compute spec
is moved under Mutex, as it's now could be updated in the http handler.
Also `RwLock` was replaced with `Mutex` because the latter works well
with `Condvar`.
First part of the neondatabase/cloud#4433
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Describe your changes
This commit adds an option to start compute without spec and then pass it a valid spec via
POST /configureAPI endpoint. This is a main prerequisite for maintaining the pool of compute nodes in the control-plane.For example:
Start compute with
-p http://localhost:9095 \ -D compute_pgdata \ -C "postgresql://[email protected]:5434/postgres" \ -b ./pg_install/v15/bin/postgresConfigure it with
shell curl -d "{\"spec\": $(cat ./compute-spec.json)}" http://localhost:3080/configureInternally, it's implemented using a
Condvar+Mutex. Compute spec is moved under Mutex, as it's now could be updated in the http handler. AlsoRwLockwas replaced withMutexbecause the latter works well withCondvar.First part of the #3923
Issue ticket number and link
First part of https://github.com/neondatabase/cloud/issues/4433
Checklist before requesting a review
Checklist before merging