import "github.com/wallyworld/juju/apiserver"
admin.go allfacades.go apiserver.go apiservermetrics.go backup.go charms.go config.go debuglog.go debuglog_db.go gui.go httpcontext.go introspection.go leadership.go localofferauth.go logsink.go logstream.go logtransfer.go pinger.go pubsub.go registration.go resources.go resources_mig.go resources_unit.go rest.go restrict_anonymous.go restrict_caasmodel.go restrict_controller.go restrict_migrations.go restrict_model.go restrict_restore.go restrict_upgrades.go restricted_root.go root.go shared.go tools.go watcher.go
const MetricLabelEndpoint = "endpoint"MetricLabelEndpoint defines a constant for the APIConnections abd PingFailureCount Labels
const MetricLabelModelUUID = "model_uuid"MetricLabelModelUUID defines a constant for the PingFailureCount and LogWriteCount Labels Note: prometheus doesn't allow hyphens only underscores
const MetricLabelState = "state"MetricLabelState defines a constant for the LogWriteCount Label
var MetricAPIConnectionsLabelNames = []string{ MetricLabelEndpoint, }
MetricAPIConnectionsLabelNames defines a series of labels for the APIConnections metric.
var MetricLogLabelNames = []string{ MetricLabelModelUUID, MetricLabelState, }
MetricLogLabelNames defines a series of labels for the LogWrite and LogRead metric
var MetricPingFailureLabelNames = []string{ MetricLabelModelUUID, MetricLabelEndpoint, }
MetricPingFailureLabelNames defines a series of labels for the PingFailure metric.
AdminFacadeDetails returns information on the Admin facade provided at login time. The Facade field of the returned slice elements will be nil.
AllFacades returns a registry containing all known API facades.
This will panic if facade registration fails, but there is a unit test to guard against that.
func DescribeFacades(registry *facade.Registry) []params.FacadeVersions
DescribeFacades returns the list of available Facades and their Versions
IsAnonymousFacade reports whether the given facade name can be accessed using an anonymous connection.
IsControllerFacade reports whether the given facade name can be accessed using a controller connection.
IsModelFacade reports whether the given facade name can be accessed using a model connection.
NewAllWatcher returns a new API server endpoint for interacting with a watcher created by the WatchAll and WatchAllModels API calls.
type CharmsHTTPHandler struct {
PostHandler FailableHandlerFunc
GetHandler FailableHandlerFunc
}CharmsHTTPHandler creates is a http.Handler which serves POST requests to a PostHandler and GET requests to a GetHandler.
TODO(katco): This is the beginning of inverting the dependencies in this callstack by splitting out the serving mechanism from the modules that are processing the requests. The next step is to publically expose construction of a suitable PostHandler and GetHandler whose goals should be clearly called out in their names, (e.g. charmPersitAPI for POSTs).
To accomplish this, we'll have to make the httpContext type public so that we can pass it into these public functions.
After we do this, we can then test the individual funcs/structs without standing up an entire HTTP server. I.e. actual unit tests. If you're in this area and can, please chissle away at this problem and update this TODO as needed! Many thanks, hacker!
func (h *CharmsHTTPHandler) ServeHTTP(w http.ResponseWriter, r *http.Request)
type Collector struct {
TotalConnections prometheus.Counter
LoginAttempts prometheus.Gauge
APIConnections *prometheus.GaugeVec
APIRequestDuration *prometheus.SummaryVec
PingFailureCount *prometheus.CounterVec
LogWriteCount *prometheus.CounterVec
LogReadCount *prometheus.CounterVec
}Collector is a prometheus.Collector that collects metrics based on apiserver status.
NewMetricsCollector returns a new Collector.
func (c *Collector) Collect(ch chan<- prometheus.Metric)
Collect is part of the prometheus.Collector interface.
func (c *Collector) Describe(ch chan<- *prometheus.Desc)
Describe is part of the prometheus.Collector interface.
type EntitiesWatcher interface {
state.StringsWatcher
// MapChanges maps the received strings to their according tag strings.
// The EntityFinder interface representing state or a mock has to be
// upcasted into the needed sub-interface of state for the real mapping.
MapChanges(in []string) ([]string, error)
}EntitiesWatcher defines an interface based on the StringsWatcher but also providing a method for the mapping of the received strings to the tags of the according entities.
Hub defines the publish method that the handler uses to publish messages on the centralhub of the apiserver.
type LogSinkConfig struct {
// DBLoggerBufferSize is the capacity of the database logger's buffer.
DBLoggerBufferSize int
// DBLoggerFlushInterval is the amount of time to allow a log record
// to sit in the buffer before being flushed to the database.
DBLoggerFlushInterval time.Duration
// RateLimitBurst defines the number of log messages that will be let
// through before we start rate limiting.
RateLimitBurst int64
// RateLimitRefill defines the rate at which log messages will be let
// through once the initial burst amount has been depleted.
RateLimitRefill time.Duration
}LogSinkConfig holds parameters to control the API server's logsink endpoint behaviour.
func DefaultLogSinkConfig() LogSinkConfig
DefaultLogSinkConfig returns a LogSinkConfig with default values.
func (cfg LogSinkConfig) Validate() error
Validate validates the logsink endpoint configuration.
pinger describes a resource that can be pinged and stopped.
func NewPinger(st *state.State, resources facade.Resources, authorizer facade.Authorizer) (Pinger, error)
NewPinger returns an object that can be pinged by calling its Ping method. If this method is not called frequently enough, the connection will be dropped.
type ResourcesBackend interface {
// OpenResource returns the identified resource and its content.
OpenResource(applicationID, name string) (resource.Resource, io.ReadCloser, error)
// GetResource returns the identified resource.
GetResource(applicationID, name string) (resource.Resource, error)
// GetPendingResource returns the identified resource.
GetPendingResource(applicationID, name, pendingID string) (resource.Resource, error)
// SetResource adds the resource to blob storage and updates the metadata.
SetResource(applicationID, userID string, res charmresource.Resource, r io.Reader) (resource.Resource, error)
// UpdatePendingResource adds the resource to blob storage and updates the metadata.
UpdatePendingResource(applicationID, pendingID, userID string, res charmresource.Resource, r io.Reader) (resource.Resource, error)
}ResourcesBackend is the functionality of Juju's state needed for the resources API.
type ResourcesHandler struct {
StateAuthFunc func(*http.Request, ...string) (ResourcesBackend, state.PoolHelper, names.Tag, error)
ChangeAllowedFunc func(*http.Request) error
}ResourcesHandler is the HTTP handler for client downloads and uploads of resources.
func (h *ResourcesHandler) ServeHTTP(resp http.ResponseWriter, req *http.Request)
ServeHTTP implements http.Handler.
type RestHTTPHandler struct {
GetHandler FailableHandlerFunc
}RestHTTPHandler creates is a http.Handler which serves ReST requests.
func (h *RestHTTPHandler) ServeHTTP(w http.ResponseWriter, r *http.Request)
ServeHTTP is defined on handler.Handler.
type Server struct {
// contains filtered or unexported fields
}Server holds the server side of the API.
func NewServer(cfg ServerConfig) (*Server, error)
NewServer serves API requests using the given configuration.
Dead returns a channel that signals when the server has exited.
GetAuditConfig returns a copy of the current audit logging configuration.
Kill implements worker.Worker.Kill.
Report is shown in the juju_engine_report.
Stop stops the server and returns when all running requests have completed.
Wait implements worker.Worker.Wait.
type ServerConfig struct {
Clock clock.Clock
PingClock clock.Clock
Tag names.Tag
DataDir string
LogDir string
Hub *pubsub.StructuredHub
Presence presence.Recorder
Mux *apiserverhttp.Mux
Authenticator httpcontext.LocalMacaroonAuthenticator
// MultiwatcherFactory is used by the API server to create
// multiwatchers. The real factory is managed by the multiwatcher
// worker.
MultiwatcherFactory multiwatcher.Factory
// StatePool is the StatePool used for looking up State
// to pass to facades. StatePool will not be closed by the
// server; it is the callers responsibility to close it
// after the apiserver has exited.
StatePool *state.StatePool
// Controller is the in-memory representation of the models
// in the controller. It is kept up to date with an all model
// watcher and the modelcache worker.
Controller *cache.Controller
// UpgradeComplete is a function that reports whether or not
// the if the agent running the API server has completed
// running upgrade steps. This is used by the API server to
// limit logins during upgrades.
UpgradeComplete func() bool
// RestoreStatus is a function that reports the restore
// status most recently observed by the agent running the
// API server. This is used by the API server to limit logins
// during a restore.
RestoreStatus func() state.RestoreStatus
// PublicDNSName is reported to the API clients who connect.
PublicDNSName string
// AllowModelAccess holds whether users will be allowed to
// access models that they have access rights to even when
// they don't have access to the controller.
AllowModelAccess bool
// NewObserver is a function which will return an observer. This
// is used per-connection to instantiate a new observer to be
// notified of key events during API requests.
NewObserver observer.ObserverFactory
// RegisterIntrospectionHandlers is a function that will
// call a function with (path, http.Handler) tuples. This
// is to support registering the handlers underneath the
// "/introspection" prefix.
RegisterIntrospectionHandlers func(func(string, http.Handler))
// LogSinkConfig holds parameters to control the API server's
// logsink endpoint behaviour. If this is nil, the values from
// DefaultLogSinkConfig() will be used.
LogSinkConfig *LogSinkConfig
// GetAuditConfig holds a function that returns the current audit
// logging config. The function may return updated values, so
// should be called every time a new login is handled.
GetAuditConfig func() auditlog.Config
// LeaseManager gives access to leadership and singular claimers
// and checkers for use in API facades.
LeaseManager lease.Manager
// MetricsCollector defines all the metrics to be collected for the
// apiserver
MetricsCollector *Collector
}ServerConfig holds parameters required to set up an API server.
func (c ServerConfig) Validate() error
Validate validates the API server configuration.
type SharedHub interface {
(topic string, data interface{}) (<-chan struct{}, error)
(topic string, handler interface{}) (func(), error)
}SharedHub represents the methods of the pubsub.StructuredHub that are used. The context uses an interface to allow mocking of the hub.
type SrvAllWatcher struct {
// contains filtered or unexported fields
}SrvAllWatcher defines the API methods on a state.Multiwatcher. which watches any changes to the state. Each client has its own current set of watchers, stored in resources. It is used by both the AllWatcher and AllModelWatcher facades.
func (aw *SrvAllWatcher) Next() (params.AllWatcherNextResults, error)
Next will return the current state of everything on the first call and subsequent calls will
Stop stops the watcher.
type SrvModelSummaryWatcher struct {
// contains filtered or unexported fields
}SrvModelSummaryWatcher defines the API methods on a ModelSummaryWatcher.
func NewModelSummaryWatcher(context facade.Context) (*SrvModelSummaryWatcher, error)
NewModelSummaryWatcher returns a new API server endpoint for interacting with a watcher created by the WatchModelSummaries and WatchAllModelSummaries API calls.
func (w *SrvModelSummaryWatcher) Next() (params.SummaryWatcherNextResults, error)
Next will return the current state of everything on the first call and subsequent calls will return just those model summaries that have changed.
Stop stops the watcher.
type UnitResourcesHandler struct {
NewOpener func(*http.Request, ...string) (resource.Opener, state.PoolHelper, error)
}UnitResourcesHandler is the HTTP handler for unit agent downloads of resources.
func (h *UnitResourcesHandler) ServeHTTP(resp http.ResponseWriter, req *http.Request)
ServeHTTP implements http.Handler.
| Path | Synopsis |
|---|---|
| apiserverhttp | |
| authentication | |
| bakeryutil | |
| common | |
| common/apihttp | |
| common/cloudspec | |
| common/credentialcommon | |
| common/crossmodel | |
| common/firewall | |
| common/imagecommon | |
| common/mocks | Package mocks is a generated GoMock package. |
| common/networkingcommon | |
| common/networkingcommon/mocks | Package mocks is a generated GoMock package. |
| common/storagecommon | Package storagecommon provides common storage-related services for API server facades. |
| common/testing | |
| errors | |
| facade | |
| facade/facadetest | |
| facade/mocks | Package mocks is a generated GoMock package. |
| httpattachment | Package httpattachment provides facilities for attaching a streaming blob of data and associated metadata to an HTTP API request, and for reading that blob on the server side. |
| httpcontext | |
| logsink | |
| logsink/mocks | Package mocks is a generated GoMock package. |
| observer | |
| observer/fakeobserver | |
| observer/metricobserver | Package metricobserver provides an implementation of apiserver/observer.ObserverFactory that maintains Prometheus metrics. |
| observer/metricobserver/mocks | Package mocks is a generated GoMock package. |
| params | |
| stateauthenticator | |
| testing | |
| testserver | |
| websocket | |
| websocket/websockettest |
Package apiserver imports 191 packages (graph). Updated 2020-08-06. Refresh now. Tools for package owners.