Files
tasks/service/history/replication/poller_manager.go
Alex ShtinandGitHub 8e8f1b0f7c Remove license header from every file (#7689)
## What changed?
<!-- Describe what has changed in this PR -->
Remove license header from every file. Because it is really hard to
follow in this PR here is the summary:
1. License header is removed from all `.go` and `.proto` files
:fireworks::fireworks:🎆.
2. `LICENSE` file in the root directory has only Temporal and Uber
copyrights.
3. 5 other `LICENSE` files added to the packages which have copyrights
different from Temporal and Uber: Datadog, Xargin, "Mat Ryer, Tyler
Bunnell and contributors".
4. `license_file` flag is removed from all code generation tools.
5. `copyright_file` flag is removed from `go:generate mockgen`
directive.
6. All copyright related targets are removed from `Makefile`.
7. Updated Temporal copyright year to 2025 everywhere.

## Why?
<!-- Tell your future self why have you made these changes -->
I double checked with legal department that it is not needed to have
license header in every file. One file per repo is enough. I put all
copyrights to the root `LICENSE` file and removed header from all other
files. Also updated tools and `Makefile`.
2025-05-01 18:50:21 -07:00

73 lines
2.3 KiB
Go

package replication
import (
"errors"
"fmt"
"go.temporal.io/server/common/cluster"
)
type (
pollerManager interface {
getSourceClusterShardIDs(sourceClusterName string) ([]int32, error)
}
pollerManagerImpl struct {
currentShardId int32
clusterMetadata cluster.Metadata
}
)
var _ pollerManager = (*pollerManagerImpl)(nil)
func newPollerManager(
currentShardId int32,
clusterMetadata cluster.Metadata,
) *pollerManagerImpl {
return &pollerManagerImpl{
currentShardId: currentShardId,
clusterMetadata: clusterMetadata,
}
}
func (p pollerManagerImpl) getSourceClusterShardIDs(sourceClusterName string) ([]int32, error) {
currentCluster := p.clusterMetadata.GetCurrentClusterName()
allClusters := p.clusterMetadata.GetAllClusterInfo()
currentClusterInfo, ok := allClusters[currentCluster]
if !ok {
return nil, errors.New("cannot get current cluster info from cluster metadata cache")
}
remoteClusterInfo, ok := allClusters[sourceClusterName]
if !ok {
return nil, errors.New(fmt.Sprintf("cannot get source cluster %s info from cluster metadata cache", sourceClusterName))
}
// The remote shard count and local shard count must be multiples.
large, small := remoteClusterInfo.ShardCount, currentClusterInfo.ShardCount
if small > large {
large, small = small, large
}
if large%small != 0 {
return nil, errors.New(fmt.Sprintf("remote shard count %d and local shard count %d are not multiples.", remoteClusterInfo.ShardCount, currentClusterInfo.ShardCount))
}
return generateShardIDs(p.currentShardId, currentClusterInfo.ShardCount, remoteClusterInfo.ShardCount), nil
}
// NOTE generateShardIDs is different than common.MapShardID
// common.MapShardID guarantee to return the corresponding shard IDs for give shard ID
// this function however is only a helper function for polling & redirecting replication task,
func generateShardIDs(localShardId int32, localShardCount int32, remoteShardCount int32) []int32 {
var pollingShards []int32
if remoteShardCount <= localShardCount {
if localShardId <= remoteShardCount {
pollingShards = append(pollingShards, localShardId)
}
return pollingShards
}
// remoteShardCount > localShardCount, replication poller will poll from multiple remote shard.
for i := localShardId; i <= remoteShardCount; i += localShardCount {
pollingShards = append(pollingShards, i)
}
return pollingShards
}