app

package
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Published: Nov 7, 2016 License: Apache-2.0 Imports: 31 Imported by: 0

Documentation

Index

Constants

View Source
const (
	UIEnd = iota
	ProbeEnd
)

Valid values of type End

View Source
const (
	DefaultHostname       = "scope.weave.local."
	DefaultWeaveURL       = "http://127.0.0.1:6784"
	DefaultContainerName  = "weavescope"
	DefaultDockerEndpoint = "unix:///var/run/docker.sock"
)

Default values for weave app integration

View Source
const RequestCtxKey contextKey = contextKey("request")

RequestCtxKey is key used for request entry in context

Variables

View Source
var (
	// Version - set at buildtime.
	Version = "dev"

	// UniqueID - set at runtime.
	UniqueID = "0"
)

Functions

func NewVersion added in v0.15.0

func NewVersion(version, downloadURL string)

NewVersion is called to expose new version information to /api

func RegisterControlRoutes

func RegisterControlRoutes(router *mux.Router, cr ControlRouter)

RegisterControlRoutes registers the various control routes with a http mux.

func RegisterPipeRoutes

func RegisterPipeRoutes(router *mux.Router, pr PipeRouter)

RegisterPipeRoutes registers the pipe routes

func RegisterReportPostHandler

func RegisterReportPostHandler(a Adder, router *mux.Router)

RegisterReportPostHandler registers the handler for report submission

func RegisterTopologyRoutes

func RegisterTopologyRoutes(router *mux.Router, r Reporter)

RegisterTopologyRoutes registers the various topology routes with a http mux.

func URLMatcher

func URLMatcher(pattern string) mux.MatcherFunc

URLMatcher uses request.RequestURI (the raw, unparsed request) to attempt to match pattern. It does this as go's URL.Parse method is broken, and mistakenly unescapes the Path before parsing it. This breaks %2F (encoded forward slashes) in the paths.

Types

type APINode

type APINode struct {
	Node detailed.Node `json:"node"`
}

APINode is returned by the /api/topology/{name}/{id} handler.

type APITopology

type APITopology struct {
	Nodes detailed.NodeSummaries `json:"nodes"`
}

APITopology is returned by the /api/topology/{name} handler.

type APITopologyDesc

type APITopologyDesc struct {
	Name        string                   `json:"name"`
	Rank        int                      `json:"rank"`
	HideIfEmpty bool                     `json:"hide_if_empty"`
	Options     []APITopologyOptionGroup `json:"options"`

	URL           string            `json:"url"`
	SubTopologies []APITopologyDesc `json:"sub_topologies,omitempty"`
	Stats         topologyStats     `json:"stats,omitempty"`
	// contains filtered or unexported fields
}

APITopologyDesc is returned in a list by the /api/topology handler.

type APITopologyOption

type APITopologyOption struct {
	Value string `json:"value"`
	Label string `json:"label"`
	// contains filtered or unexported fields
}

APITopologyOption describes a &param=value to a given topology.

type APITopologyOptionGroup added in v0.14.0

type APITopologyOptionGroup struct {
	ID      string              `json:"id"`
	Default string              `json:"defaultValue,omitempty"`
	Options []APITopologyOption `json:"options,omitempty"`
}

APITopologyOptionGroup describes a group of APITopologyOptions

type Adder

type Adder interface {
	Add(context.Context, report.Report, []byte) error
}

Adder is something that can accept reports. It's a convenient interface for parts of the app, and several experimental components. It takes the following arguments: - context.Context: the request context - report.Report: the deserialised report - []byte: the serialised report (as gzip'd msgpack)

type Collector

type Collector interface {
	Reporter
	Adder
}

A Collector is a Reporter and an Adder

func NewCollector

func NewCollector(window time.Duration) Collector

NewCollector returns a collector ready for use.

func NewFileCollector added in v0.16.1

func NewFileCollector(path string) (Collector, error)

NewFileCollector reads and parses the given path, returning a collector which always returns that report.

type ControlRouter added in v0.13.0

type ControlRouter interface {
	Handle(ctx context.Context, probeID string, req xfer.Request) (xfer.Response, error)
	Register(ctx context.Context, probeID string, handler xfer.ControlHandlerFunc) (int64, error)
	Deregister(ctx context.Context, probeID string, id int64) error
}

ControlRouter is a thing that can route control requests and responses between the UI and a probe.

func NewLocalControlRouter added in v0.13.0

func NewLocalControlRouter() ControlRouter

NewLocalControlRouter creates a new ControlRouter that does everything locally, in memory.

type CtxHandlerFunc added in v0.13.0

type CtxHandlerFunc func(context.Context, http.ResponseWriter, *http.Request)

CtxHandlerFunc is a http.HandlerFunc, with added contexts

type DockerClient added in v0.13.0

type DockerClient interface {
	ListContainers(fsouza.ListContainersOptions) ([]fsouza.APIContainers, error)
}

DockerClient is the little bit of the docker client we need.

type End added in v0.13.0

type End int

End is an enum for either end of the pipe.

func (End) String added in v0.14.0

func (e End) String() string

type Interface added in v0.13.0

type Interface struct {
	Name  string
	Addrs []net.Addr
}

Interface is because net.Interface isn't mockable.

func Interfaces added in v0.13.0

func Interfaces() ([]Interface, error)

Interfaces returns the list of Interfaces on the machine.

type InterfaceFunc added in v0.13.0

type InterfaceFunc func() ([]Interface, error)

InterfaceFunc is the type of Interfaces()

type Merger added in v0.15.0

type Merger interface {
	Merge([]report.Report) report.Report
}

Merger is the type for a thing that can merge reports.

func MakeDumbMerger added in v0.15.0

func MakeDumbMerger() Merger

MakeDumbMerger makes a Merger which merges together reports in the simplest possible way.

func NewSmartMerger added in v0.15.0

func NewSmartMerger() Merger

NewSmartMerger makes a Merger which merges reports in parallel. Speed up comes from the fact that a) most merges are between small reports, and b) we take advantage of available cores.

type PipeRouter

type PipeRouter interface {
	Exists(context.Context, string) (bool, error)
	Get(context.Context, string, End) (xfer.Pipe, io.ReadWriter, error)
	Release(context.Context, string, End) error
	Delete(context.Context, string) error
	Stop()
}

PipeRouter stores pipes and allows you to connect to either end of them.

func NewLocalPipeRouter added in v0.13.0

func NewLocalPipeRouter() PipeRouter

NewLocalPipeRouter returns a new local (in-memory) pipe router.

type Reporter

type Reporter interface {
	Report(context.Context) (report.Report, error)
	WaitOn(context.Context, chan struct{})
	UnWait(context.Context, chan struct{})
}

Reporter is something that can produce reports on demand. It's a convenient interface for parts of the app, and several experimental components.

type StaticCollector added in v0.16.1

type StaticCollector report.Report

StaticCollector always returns the given report.

func (StaticCollector) Add added in v0.16.1

Add adds a report to the collector's internal state. It implements Adder.

func (StaticCollector) Report added in v0.16.1

Report returns a merged report over all added reports. It implements Reporter.

func (StaticCollector) UnWait added in v0.16.1

func (c StaticCollector) UnWait(context.Context, chan struct{})

UnWait lets other components stop waiting on a new report being received. It implements Reporter.

func (StaticCollector) WaitOn added in v0.16.1

func (c StaticCollector) WaitOn(context.Context, chan struct{})

WaitOn lets other components wait on a new report being received. It implements Reporter.

type WeaveClient added in v0.13.0

type WeaveClient interface {
	AddDNSEntry(hostname, containerid string, ip net.IP) error
	Expose() error
}

WeaveClient is the little bit of the weave clent we need.

type WeavePublisher added in v0.13.0

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

WeavePublisher is a thing which periodically registers this app with WeaveDNS.

func NewWeavePublisher added in v0.13.0

func NewWeavePublisher(weaveClient WeaveClient, dockerClient DockerClient, interfaces InterfaceFunc, hostname, containerName string) *WeavePublisher

NewWeavePublisher makes a new Weave.

func (*WeavePublisher) Stop added in v0.13.0

func (w *WeavePublisher) Stop()

Stop the Weave.

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