armbalancer

Documentation

Index

• func New(ctx context.Context, opts Options) http.RoundTripper
• func NewHostScopedTransport(ctx context.Context, transportFactory func() *transportChannPool) *hostScopedTransport
• type ClosableTransport
  • func (transport *ClosableTransport) ForceClose() error
  • func (transport *ClosableTransport) RoundTrip(req *http.Request) (*http.Response, error)
• type KillBeforeThrottledPolicy
  • func (policy *KillBeforeThrottledPolicy) ShouldDropTransport(header http.Header) bool
• type Options
• type Transport
• type TransportDropPolicy
• type TransportDropPolicyFunc
  • func (function TransportDropPolicyFunc) ShouldDropTransport(header http.Header) bool

Functions

func New

func New(ctx context.Context, opts Options) http.RoundTripper

New wraps a transport to provide smart connection pooling and client-side load balancing.

func NewHostScopedTransport

func NewHostScopedTransport(ctx context.Context, transportFactory func() *transportChannPool) *hostScopedTransport

Types

type ClosableTransport

type ClosableTransport struct {
	*http.Transport
}

func (*ClosableTransport) ForceClose

func (transport *ClosableTransport) ForceClose() error

func (*ClosableTransport) RoundTrip

func (transport *ClosableTransport) RoundTrip(req *http.Request) (*http.Response, error)

type KillBeforeThrottledPolicy

type KillBeforeThrottledPolicy struct {
	RecycleThreshold int64
}

func (*KillBeforeThrottledPolicy) ShouldDropTransport

func (policy *KillBeforeThrottledPolicy) ShouldDropTransport(header http.Header) bool

type Options

type Options struct {
	Transport *http.Transport

	// PoolSize is the max number of connections that will be created by the connection pool.
	// Default: 8
	PoolSize int

	// RecycleThreshold is the lowest value of any X-Ms-Ratelimit-Remaining-* header that
	// can be seen before the associated connection will be re-established.
	// Default: 100
	RecycleThreshold int64

	// MinReqsBeforeRecycle is a safeguard to prevent frequent connection churn in the unlikely event
	// that a connections lands on an ARM instance that already has a depleted rate limiting quota.
	// Default: 10
	MinReqsBeforeRecycle int64
}

type Transport

type Transport interface {
	http.RoundTripper
	ForceClose() error
}

type TransportDropPolicy

type TransportDropPolicy interface {
	ShouldDropTransport(header http.Header) bool
}

type TransportDropPolicyFunc

type TransportDropPolicyFunc func(header http.Header) bool

func (TransportDropPolicyFunc) ShouldDropTransport

func (function TransportDropPolicyFunc) ShouldDropTransport(header http.Header) bool