mirror of https://github.com/harness/drone.git
65 lines
2.0 KiB
Go
65 lines
2.0 KiB
Go
// Copyright 2023 Harness, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package controller
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import (
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"context"
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"errors"
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"github.com/harness/gitness/store"
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"github.com/harness/gitness/store/database/dbtx"
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)
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// TxOptionRetryCount transaction option allows setting number of transaction executions reties.
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// A transaction started with TxOptLock will be automatically retried in case of version conflict error.
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type TxOptionRetryCount int
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// TxOptionResetFunc transaction provides a function that will be executed before the transaction retry.
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// A transaction started with TxOptLock will be automatically retried in case of version conflict error.
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type TxOptionResetFunc func()
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// TxOptLock runs the provided function inside a database transaction. If optimistic lock error occurs
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// during the operation, the function will retry the whole transaction again (to the maximum of 5 times,
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// but this can be overridden by providing an additional TxOptionRetryCount option).
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func TxOptLock(ctx context.Context,
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tx dbtx.Transactor,
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txFn func(ctx context.Context) error,
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opts ...interface{},
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) (err error) {
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tries := 5
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var resetFuncs []func()
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for _, opt := range opts {
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if n, ok := opt.(TxOptionRetryCount); ok {
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tries = int(n)
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}
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if fn, ok := opt.(TxOptionResetFunc); ok {
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resetFuncs = append(resetFuncs, fn)
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}
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}
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for try := 0; try < tries; try++ {
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err = tx.WithTx(ctx, txFn, opts...)
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if !errors.Is(err, store.ErrVersionConflict) {
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break
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}
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for _, fn := range resetFuncs {
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fn()
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}
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}
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return
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}
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