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022bc2a714
## What changed? Adding sql connection pool metrics from stdlib `Stats` ## Why? Expose more metrics for config fine tuning ## How did you test it? - [x] built - [x] run locally and tested manually - [x] covered by existing tests - [ ] added new unit test(s) - [ ] added new functional test(s) --------- Co-authored-by: Roey Berman <[email protected]> Co-authored-by: Roey Berman <[email protected]>
56 lines
2.0 KiB
Go
56 lines
2.0 KiB
Go
package sqlplugin
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import (
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"errors"
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"testing"
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"time"
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"github.com/jmoiron/sqlx"
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"github.com/stretchr/testify/assert"
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"go.temporal.io/server/common/clock"
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"go.temporal.io/server/common/log"
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"go.temporal.io/server/common/metrics"
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)
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// TestDatabaseHandleReconnect tests the reconnection behavior when there are connection errors.
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func TestDatabaseHandleReconnect(t *testing.T) {
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testCases := []struct {
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msg string // test description
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numRetries int // number of time to try reconnecting
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retryDelay time.Duration // wait time (in this test) before trying to reconnect
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expectedConnectAttempts int // expected number of times a connection attempt is made.
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}{
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{"No retries", 0, 0, 1},
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{"Retry once immediately", 1, 0, 1},
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{"Retry many times immediately", 5, 0, 1},
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{"Retry once after session retry interval", 1, sessionRefreshMinInternal + time.Millisecond, 2},
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{"Retry many times with session retry interval", 5, sessionRefreshMinInternal + time.Millisecond, 6},
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{"Retry many times quickly - but collectively exceeding session retry interval. Expect 2 total attempts", 5, sessionRefreshMinInternal/5 + time.Millisecond, 2},
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}
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needsRefreshFunc := func(_ error) bool { return false }
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for _, tc := range testCases {
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t.Run(tc.msg, func(t *testing.T) {
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actualConnectAttemptCount := 0
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connectFunc := func() (*sqlx.DB, error) {
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actualConnectAttemptCount++
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return nil, errTest
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}
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fakeTimeSource := clock.NewEventTimeSource().Update(time.Now())
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dbHandle := NewDatabaseHandle(DbKindUnknown, connectFunc, needsRefreshFunc, log.NewNoopLogger(), metrics.NoopMetricsHandler, fakeTimeSource)
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assert.NotNil(t, dbHandle)
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for i := 0; i < tc.numRetries; i++ {
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fakeTimeSource.Advance(tc.retryDelay)
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db, err := dbHandle.DB()
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assert.Nil(t, db, tc.msg)
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assert.ErrorIs(t, err, DatabaseUnavailableError)
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}
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assert.Equal(t, tc.expectedConnectAttempts, actualConnectAttemptCount, tc.msg)
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})
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}
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}
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var errTest = errors.New("test")
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