server

Documentation

Overview

Package server contains the policy engine's server handlers.

Index

• Constants
• type AuthenticationScheme
• type AuthorizationScheme
• type Buffer
• type BundleInfo
• type Info
• type Loop
• type Metrics
• type Server
  • func New() *Server
  • func (s *Server) Addrs() []string
  • func (s *Server) DiagnosticAddrs() []string
  • func (s *Server) Init(ctx context.Context) (*Server, error)
  • func (s *Server) Listeners() ([]Loop, error)
  • func (s *Server) Shutdown(ctx context.Context) error
  • func (s *Server) WithAddresses(addrs []string) *Server
  • func (s *Server) WithAuthentication(scheme AuthenticationScheme) *Server
  • func (s *Server) WithAuthorization(scheme AuthorizationScheme) *Server
  • func (s *Server) WithCertPool(pool *x509.CertPool) *Server
  • func (s *Server) WithCertificate(cert *tls.Certificate) *Server
  • func (s *Server) WithCompilerErrorLimit(limit int) *Server
  • func (s *Server) WithDecisionIDFactory(f func() string) *Server
  • func (s *Server) WithDecisionLogger(logger func(context.Context, *Info)) *Server
  • func (s *Server) WithDecisionLoggerWithErr(logger func(context.Context, *Info) error) *Server
  • func (s *Server) WithDiagnosticAddresses(addrs []string) *Server
  • func (s *Server) WithH2CEnabled(enabled bool) *Server
  • func (s *Server) WithManager(manager *plugins.Manager) *Server
  • func (s *Server) WithMetrics(m Metrics) *Server
  • func (s *Server) WithPprofEnabled(pprofEnabled bool) *Server
  • func (s *Server) WithRouter(router *mux.Router) *Server
  • func (s *Server) WithRuntime(term *ast.Term) *Server
  • func (s *Server) WithStore(store storage.Store) *Server

Constants

const (
	PromHandlerV0Data     = "v0/data"
	PromHandlerV1Data     = "v1/data"
	PromHandlerV1Query    = "v1/query"
	PromHandlerV1Policies = "v1/policies"
	PromHandlerV1Compile  = "v1/compile"
	PromHandlerV1Config   = "v1/config"
	PromHandlerIndex      = "index"
	PromHandlerCatch      = "catchall"
	PromHandlerHealth     = "health"
)

Set of handlers for use in the "handler" dimension of the duration metric.

Types

type AuthenticationScheme

type AuthenticationScheme int

AuthenticationScheme enumerates the supported authentication schemes. The authentication scheme determines how client identities are established.

const (
	AuthenticationOff AuthenticationScheme = iota
	AuthenticationToken
	AuthenticationTLS
)

Set of supported authentication schemes.

type AuthorizationScheme

type AuthorizationScheme int

AuthorizationScheme enumerates the supported authorization schemes. The authorization scheme determines how access to OPA is controlled.

const (
	AuthorizationOff AuthorizationScheme = iota
	AuthorizationBasic
)

Set of supported authorization schemes.

type Buffer

type Buffer interface {
	// Push adds the given Info into the buffer.
	Push(*Info)

	// Iter iterates over the buffer, from oldest present Info to newest. It should
	// call fn on each Info.
	Iter(fn func(*Info))
}

Buffer defines an interface for recording decisions. DEPRECATED. Use Decision Logging instead.

type BundleInfo

type BundleInfo struct {
	Revision string
}

BundleInfo contains information describing a bundle.

type Info

type Info struct {
	Txn        storage.Transaction
	Revision   string // Deprecated: Use `Bundles` instead
	Bundles    map[string]BundleInfo
	DecisionID string
	RemoteAddr string
	Query      string
	Path       string
	Timestamp  time.Time
	Input      *interface{}
	InputAST   ast.Value
	Results    *interface{}
	Error      error
	Metrics    metrics.Metrics
	Trace      []*topdown.Event
}

Info contains information describing a policy decision.

type Loop

type Loop func() error

Loop will contain all the calls from the server that we'll be listening on.

type Metrics

type Metrics interface {
	RegisterEndpoints(registrar func(path, method string, handler http.Handler))
	InstrumentHandler(handler http.Handler, label string) http.Handler
}

Metrics defines the interface that the server requires for recording HTTP handler metrics.

type Server

type Server struct {
	Handler           http.Handler
	DiagnosticHandler http.Handler
	// contains filtered or unexported fields
}

Server represents an instance of OPA running in server mode.

func New

func New() *Server

New returns a new Server.

func (*Server) Addrs

func (s *Server) Addrs() []string

Addrs returns a list of addresses that the server is listening on. If the server hasn't been started it will not return an address.

func (*Server) DiagnosticAddrs

func (s *Server) DiagnosticAddrs() []string

DiagnosticAddrs returns a list of addresses that the server is listening on for the read-only diagnostic API's (eg /health, /metrics, etc) If the server hasn't been started it will not return an address.

func (*Server) Init

func (s *Server) Init(ctx context.Context) (*Server, error)

Init initializes the server. This function MUST be called before starting any loops from s.Listeners().

func (*Server) Listeners

func (s *Server) Listeners() ([]Loop, error)

Listeners returns functions that listen and serve connections.

func (*Server) Shutdown

func (s *Server) Shutdown(ctx context.Context) error

Shutdown will attempt to gracefully shutdown each of the http servers currently in use by the OPA Server. If any exceed the deadline specified by the context an error will be returned.

func (*Server) WithAddresses

func (s *Server) WithAddresses(addrs []string) *Server

WithAddresses sets the listening addresses that the server will bind to.

func (*Server) WithAuthentication

func (s *Server) WithAuthentication(scheme AuthenticationScheme) *Server

WithAuthentication sets authentication scheme to use on the server.

func (*Server) WithAuthorization

func (s *Server) WithAuthorization(scheme AuthorizationScheme) *Server

WithAuthorization sets authorization scheme to use on the server.

func (*Server) WithCertPool

func (s *Server) WithCertPool(pool *x509.CertPool) *Server

WithCertPool sets the server-side cert pool that the server will use.

func (*Server) WithCertificate

func (s *Server) WithCertificate(cert *tls.Certificate) *Server

WithCertificate sets the server-side certificate that the server will use.

func (*Server) WithCompilerErrorLimit

func (s *Server) WithCompilerErrorLimit(limit int) *Server

WithCompilerErrorLimit sets the limit on the number of compiler errors the server will allow.

func (*Server) WithDecisionIDFactory

func (s *Server) WithDecisionIDFactory(f func() string) *Server

WithDecisionIDFactory sets a function on the server to generate decision IDs.

func (*Server) WithDecisionLogger

func (s *Server) WithDecisionLogger(logger func(context.Context, *Info)) *Server

WithDecisionLogger sets the decision logger used by the server. DEPRECATED. Use WithDecisionLoggerWithErr instead.

func (*Server) WithDecisionLoggerWithErr

func (s *Server) WithDecisionLoggerWithErr(logger func(context.Context, *Info) error) *Server

WithDecisionLoggerWithErr sets the decision logger used by the server.

func (*Server) WithDiagnosticAddresses

func (s *Server) WithDiagnosticAddresses(addrs []string) *Server

WithDiagnosticAddresses sets the listening addresses that the server will bind to and *only* serve read-only diagnostic API's.

func (*Server) WithH2CEnabled

func (s *Server) WithH2CEnabled(enabled bool) *Server

WithH2CEnabled sets whether h2c ("HTTP/2 cleartext") is enabled for the http listener

func (*Server) WithManager

func (s *Server) WithManager(manager *plugins.Manager) *Server

WithManager sets the plugins manager used by the server.

func (*Server) WithMetrics

func (s *Server) WithMetrics(m Metrics) *Server

WithMetrics sets the metrics provider used by the server.

func (*Server) WithPprofEnabled

func (s *Server) WithPprofEnabled(pprofEnabled bool) *Server

WithPprofEnabled sets whether pprof endpoints are enabled

func (*Server) WithRouter

func (s *Server) WithRouter(router *mux.Router) *Server

WithRouter sets the mux.Router to attach OPA's HTTP API routes onto. If a router is not supplied, the server will create it's own.

func (*Server) WithRuntime

func (s *Server) WithRuntime(term *ast.Term) *Server

WithRuntime sets the runtime data to provide to the evaluation engine.

func (*Server) WithStore

func (s *Server) WithStore(store storage.Store) *Server

WithStore sets the storage used by the server.