Files
tasks/common/circuitbreaker/circuitbreaker.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

88 lines
2.5 KiB
Go

package circuitbreaker
import (
"sync"
"sync/atomic"
"github.com/sony/gobreaker"
"go.temporal.io/server/common/dynamicconfig"
)
type (
TwoStepCircuitBreaker interface {
Name() string
State() gobreaker.State
Counts() gobreaker.Counts
Allow() (done func(success bool), err error)
}
// TwoStepCircuitBreakerWithDynamicSettings is a wrapper of gobreaker.TwoStepCircuitBreaker
// that calls the settingsFn everytime the Allow function is called and replaces the circuit
// breaker if there is a change in the settings object. Note that in this case, the previous
// state of the circuit breaker is lost.
TwoStepCircuitBreakerWithDynamicSettings struct {
name string
readyToTrip func(counts gobreaker.Counts) bool
onStateChange func(name string, from gobreaker.State, to gobreaker.State)
cb atomic.Pointer[gobreaker.TwoStepCircuitBreaker]
cbLock sync.Mutex
settings dynamicconfig.CircuitBreakerSettings
}
Settings struct {
// For the following options, check gobreaker docs for details.
Name string
ReadyToTrip func(counts gobreaker.Counts) bool
OnStateChange func(name string, from gobreaker.State, to gobreaker.State)
}
)
var _ TwoStepCircuitBreaker = (*TwoStepCircuitBreakerWithDynamicSettings)(nil)
// Caller must call UpdateSettings once before using this object.
func NewTwoStepCircuitBreakerWithDynamicSettings(
settings Settings,
) *TwoStepCircuitBreakerWithDynamicSettings {
return &TwoStepCircuitBreakerWithDynamicSettings{
name: settings.Name,
readyToTrip: settings.ReadyToTrip,
onStateChange: settings.OnStateChange,
}
}
func (c *TwoStepCircuitBreakerWithDynamicSettings) UpdateSettings(
ds dynamicconfig.CircuitBreakerSettings,
) {
c.cbLock.Lock()
defer c.cbLock.Unlock()
if c.cb.Load() != nil && ds == c.settings {
return // no change
}
c.settings = ds
c.cb.Store(gobreaker.NewTwoStepCircuitBreaker(gobreaker.Settings{
Name: c.name,
MaxRequests: uint32(ds.MaxRequests),
Interval: ds.Interval,
Timeout: ds.Timeout,
ReadyToTrip: c.readyToTrip,
OnStateChange: c.onStateChange,
}))
}
func (c *TwoStepCircuitBreakerWithDynamicSettings) Name() string {
return c.cb.Load().Name()
}
func (c *TwoStepCircuitBreakerWithDynamicSettings) State() gobreaker.State {
return c.cb.Load().State()
}
func (c *TwoStepCircuitBreakerWithDynamicSettings) Counts() gobreaker.Counts {
return c.cb.Load().Counts()
}
func (c *TwoStepCircuitBreakerWithDynamicSettings) Allow() (done func(success bool), err error) {
return c.cb.Load().Allow()
}