routing

package
v2.1.2+incompatible Latest Latest
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 Go to latest Published: Mar 18, 2019 License: Apache-2.0 Imports: 20 Imported by: 0

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Constants

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Variables

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Functions

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Types

type BatchedIngressClient 

type BatchedIngressClient struct {
	// contains filtered or unexported fields
}

BatchedIngressClient batches envelopes before sending it. Each invocation to Send is async.

func NewBatchedIngressClient 

func NewBatchedIngressClient(
	size int,
	interval time.Duration,
	c rpc.IngressClient,
	m Metrics,
	log *log.Logger,
) *BatchedIngressClient

NewBatchedIngressClient returns a new BatchedIngressClient.

func (*BatchedIngressClient) Send 

func (b *BatchedIngressClient) Send(ctx context.Context, in *rpc.SendRequest, opts ...grpc.CallOption) (*rpc.SendResponse, error)

Send batches envelopes before shipping them to the client.

type EgressReverseProxy 

type EgressReverseProxy struct {
	// contains filtered or unexported fields
}

EgressReverseProxy is a reverse proxy for Egress requests.

func NewEgressReverseProxy 

func NewEgressReverseProxy(
	l Lookup,
	clients []rpc.EgressClient,
	localIdx int,
	log *log.Logger,
	opts ...EgressReverseProxyOption,
) *EgressReverseProxy

NewEgressReverseProxy returns a new EgressReverseProxy. LocalIdx is required to know where to find the local node for meta lookups.

func (*EgressReverseProxy) Meta 

func (e *EgressReverseProxy) Meta(ctx context.Context, in *rpc.MetaRequest) (*rpc.MetaResponse, error)

Meta will gather meta from the local store and remote nodes.

func (*EgressReverseProxy) Read 

func (e *EgressReverseProxy) Read(ctx context.Context, in *rpc.ReadRequest) (*rpc.ReadResponse, error)

Read will either read from the local node or remote nodes.

type EgressReverseProxyOption 

type EgressReverseProxyOption func(e *EgressReverseProxy)

func WithMetaCacheDuration 

func WithMetaCacheDuration(d time.Duration) EgressReverseProxyOption

WithMetaCacheDuration is a EgressReverseProxyOption to configure how long to cache results from the Meta endpoint.

type IngressClientFunc 

type IngressClientFunc func(ctx context.Context, r *rpc.SendRequest, opts ...grpc.CallOption) (*rpc.SendResponse, error)

IngressClientFunc transforms a function into an IngressClient.

func (IngressClientFunc) Send 

func (f IngressClientFunc) Send(ctx context.Context, r *rpc.SendRequest, opts ...grpc.CallOption) (*rpc.SendResponse, error)

Send implements an IngressClient.

type IngressReverseProxy 

type IngressReverseProxy struct {
	// contains filtered or unexported fields
}

IngressReverseProxy is a reverse proxy for Ingress requests.

func NewIngressReverseProxy 

func NewIngressReverseProxy(
	l Lookup,
	clients []rpc.IngressClient,
	localIdx int,
	log *log.Logger,
) *IngressReverseProxy

NewIngressReverseProxy returns a new IngressReverseProxy.

func (*IngressReverseProxy) Send 

func (p *IngressReverseProxy) Send(ctx context.Context, r *rpc.SendRequest) (*rpc.SendResponse, error)

Send will send to either the local node or the correct remote node according to its source ID.

type LocalStoreReader 

type LocalStoreReader struct {
	// contains filtered or unexported fields
}

LocalStoreReader accesses a store via gRPC calls. It handles converting the requests into a form that the store understands for reading.

func NewLocalStoreReader 

func NewLocalStoreReader(s StoreReader) *LocalStoreReader

NewLocalStoreReader creates and returns a new LocalStoreReader.

func (*LocalStoreReader) Meta 

func (r *LocalStoreReader) Meta(ctx context.Context, req *logcache_v1.MetaRequest, opts ...grpc.CallOption) (*logcache_v1.MetaResponse, error)

func (*LocalStoreReader) Read 

func (r *LocalStoreReader) Read(ctx context.Context, req *logcache_v1.ReadRequest, opts ...grpc.CallOption) (*logcache_v1.ReadResponse, error)

Read returns data from the store.

type Lookup 

type Lookup func(sourceID string) []int

Lookup is used to find which Clients a source ID should be routed to.

type Metrics 

type Metrics interface {
	// NewCounter returns a func that can be used to increment a counter
	// metric.
	NewCounter(name string) func(delta uint64)
}

Metrics registers new Counter metrics.

type OrchestratorAgent 

type OrchestratorAgent struct {
	// contains filtered or unexported fields
}

OrchestratorAgent manages the Log Cache node's routes.

func NewOrchestratorAgent 

func NewOrchestratorAgent(s RangeSetter) *OrchestratorAgent

NewOrchestratorAgent returns a new OrchestratorAgent.

func (*OrchestratorAgent) AddRange 

func (o *OrchestratorAgent) AddRange(ctx context.Context, r *rpc.AddRangeRequest) (*rpc.AddRangeResponse, error)

AddRange adds a range (from the scheduler) for data to be routed to.

func (*OrchestratorAgent) ListRanges 

func (o *OrchestratorAgent) ListRanges(ctx context.Context, r *rpc.ListRangesRequest) (*rpc.ListRangesResponse, error)

ListRanges returns all the ranges that are currently active.

func (*OrchestratorAgent) RemoveRange 

func (o *OrchestratorAgent) RemoveRange(ctx context.Context, req *rpc.RemoveRangeRequest) (*rpc.RemoveRangeResponse, error)

RemoveRange removes a range (form the scheduler) for the data to be routed to.

func (*OrchestratorAgent) SetRanges 

func (o *OrchestratorAgent) SetRanges(ctx context.Context, in *rpc.SetRangesRequest) (*rpc.SetRangesResponse, error)

SetRanges passes them along to the RangeSetter.

type Range 

type Range struct {
	Start uint64
	End   uint64
}

func (*Range) CloneRpcRange 

func (sr *Range) CloneRpcRange(r *rpc.Range)

func (*Range) ToRpcRange 

func (sr *Range) ToRpcRange() *rpc.Range

type RangeSetter 

type RangeSetter interface {
	// SetRanges is used as a pass through for the orchestration service's
	// SetRanges method.
	SetRanges(ctx context.Context, in *rpc.SetRangesRequest) (*rpc.SetRangesResponse, error)
}

type RoutingTable 

type RoutingTable struct {
	// contains filtered or unexported fields
}

RoutingTable makes decisions for where a item should be routed.

func NewRoutingTable 

func NewRoutingTable(addrs []string, hasher func(string) uint64) *RoutingTable

NewRoutingTable returns a new RoutingTable.

func (*RoutingTable) Lookup 

func (t *RoutingTable) Lookup(item string) []int

Lookup takes a item, hash it and determine what node it should be routed to.

func (*RoutingTable) LookupAll 

func (t *RoutingTable) LookupAll(item string) []int

LookupAll returns every index that has a range where the item would fall under.

func (*RoutingTable) SetRanges 

func (t *RoutingTable) SetRanges(ctx context.Context, in *rpc.SetRangesRequest) (*rpc.SetRangesResponse, error)

SetRanges sets the routing table.

type StaticLookup 

type StaticLookup struct {
	// contains filtered or unexported fields
}

StaticLookup is used to do lookup for static routes.

func NewStaticLookup 

func NewStaticLookup(numOfRoutes int, hasher func(string) uint64) *StaticLookup

NewStaticLookup creates and returns a StaticLookup.

func (*StaticLookup) Lookup 

func (l *StaticLookup) Lookup(sourceID string) int

Lookup hashes the SourceId and then returns the index that is in range of the hash.

type StoreReader 

type StoreReader interface {
	// Gets envelopes from a local or remote Log Cache.
	Get(
		sourceID string,
		start time.Time,
		end time.Time,
		envelopeTypes []logcache_v1.EnvelopeType,
		nameFilter *regexp.Regexp,
		limit int,
		descending bool,
	) []*loggregator_v2.Envelope

	// Meta gets the metadata from Log Cache instances in the cluster.
	Meta() map[string]logcache_v1.MetaInfo
}

StoreReader proxies to the log cache for getting envelopes or Log Cache Metadata.

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