fix: update global patroni params for systemd#398
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📝 WalkthroughWalkthroughAdds Patroni DCS-to-dynamic-config conversion and schema updates, wires NodeSize-driven failsafe_mode in the config generator, implements PatroniConfig create/update/delete with dynamic wait computation and optional dynamic-config patching, updates systemd reload wiring, updates golden tests and generator tests, and adds an e2e verifying max_connections update. ChangesPatroni Dynamic Config Update Feature
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| Complexity | 2 medium |
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🧹 Nitpick comments (2)
server/internal/orchestrator/common/patroni_config.go (1)
252-261: 💤 Low valueComputed wait can be negative when DCSLastSeen is stale but within bounds.
When
lastSeenis betweenloopWaitand2*loopWaitin the past (e.g., 15s ago with a 10s loop),time.Until(lastSeen.Add(loopWait))returns a negative duration. Whileutils.SleepContextlikely treats negative durations as zero, clamping explicitly would clarify intent.Suggested fix
if lastSeen.After(lowerBound) && lastSeen.Before(upperBound) { // Compute the time until the next run cycle wait = time.Until(lastSeen.Add(loopWait)) + if wait < 0 { + wait = 0 + } }🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@server/internal/orchestrator/common/patroni_config.go` around lines 252 - 261, The computed wait based on DCSLastSeen can be negative; in the block that computes wait using time.Until(lastSeen.Add(loopWait)) (involving status.DCSLastSeen, lastSeen, loopWait and wait), clamp the computed duration to a non-negative value before assigning to wait (e.g., compute d := time.Until(lastSeen.Add(loopWait)); if d < 0 { d = 0 }; wait = d) so the code explicitly prevents negative sleeps (which utils.SleepContext may otherwise treat as zero).e2e/patroni_global_params_test.go (1)
13-50: 💤 Low valueMinor:
DatabaseNamedoesn't reflect what the test validates.The test validates
max_connectionschanges, butDatabaseNameis"test_port_change". Consider renaming to"test_max_connections"or similar for clarity.Suggested fix
db := fixture.NewDatabaseFixture(ctx, t, &api.CreateDatabaseRequest{ Spec: &api.DatabaseSpec{ - DatabaseName: "test_port_change", + DatabaseName: "test_max_connections",🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@e2e/patroni_global_params_test.go` around lines 13 - 50, Rename the test database name to reflect what the test asserts: update the DatabaseName field in the CreateDatabaseRequest's Spec (inside TestUpdatePatroniGlobalParams) from "test_port_change" to a clearer name like "test_max_connections" so the identifier matches the test intent; update any local references/comments that mention the old name to keep wording consistent.
🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
Nitpick comments:
In `@e2e/patroni_global_params_test.go`:
- Around line 13-50: Rename the test database name to reflect what the test
asserts: update the DatabaseName field in the CreateDatabaseRequest's Spec
(inside TestUpdatePatroniGlobalParams) from "test_port_change" to a clearer name
like "test_max_connections" so the identifier matches the test intent; update
any local references/comments that mention the old name to keep wording
consistent.
In `@server/internal/orchestrator/common/patroni_config.go`:
- Around line 252-261: The computed wait based on DCSLastSeen can be negative;
in the block that computes wait using time.Until(lastSeen.Add(loopWait))
(involving status.DCSLastSeen, lastSeen, loopWait and wait), clamp the computed
duration to a non-negative value before assigning to wait (e.g., compute d :=
time.Until(lastSeen.Add(loopWait)); if d < 0 { d = 0 }; wait = d) so the code
explicitly prevents negative sleeps (which utils.SleepContext may otherwise
treat as zero).
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📒 Files selected for processing (13)
e2e/patroni_global_params_test.goserver/internal/orchestrator/common/golden_test/TestPatroniConfigGenerator/enable_fast_basebackup.yamlserver/internal/orchestrator/common/golden_test/TestPatroniConfigGenerator/in-place_restore.yamlserver/internal/orchestrator/common/golden_test/TestPatroniConfigGenerator/minimal_swarm.yamlserver/internal/orchestrator/common/golden_test/TestPatroniConfigGenerator/minimal_systemd.yamlserver/internal/orchestrator/common/golden_test/TestPatroniConfigGenerator/with_backup_config.yamlserver/internal/orchestrator/common/golden_test/TestPatroniConfigGenerator/with_restore_config.yamlserver/internal/orchestrator/common/patroni_config.goserver/internal/orchestrator/common/patroni_config_generator.goserver/internal/orchestrator/common/patroni_config_generator_test.goserver/internal/orchestrator/systemd/patroni_config.goserver/internal/patroni/client.goserver/internal/patroni/config.go
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Patroni disallows setting some parameters through the Patroni config file after the cluster is created. Instead, they must be set via the dynamic config API. This commit adds functionality to the systemd Patroni config implementation to patch the dynamic config if the Patroni API is up and if the API reports that it is the primary instance. This commit only affects systemd clusters. I will implement this for Swarm clusters in a subsequent commit by migrating Swarm to use the common Patroni config resource. PLAT-610
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Summary
Patroni disallows setting some parameters through the Patroni config file after the cluster is created. Instead, they must be set via the dynamic config API.
This commit adds functionality to the systemd Patroni config implementation to patch the dynamic config if the Patroni API is up and reports that it is the primary instance.
This commit only affects systemd clusters. I will implement this for Swarm clusters in a subsequent commit by migrating Swarm to use the common Patroni config resource.
Testing
PLAT-610