control

package
v0.15.0-beta Latest Latest
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 Go to latest Published: Jul 15, 2016 License: Apache-2.0 Imports: 37 Imported by: 0

Documentation

Overview

Package control PluginManger manages loading, unloading, and swapping of plugins

Index

Constants

View Source 
const (
	// DefaultClientTimeout - default timeout for a client connection attempt
	DefaultClientTimeout = time.Second * 3
	// DefaultHealthCheckTimeout - default timeout for a health check
	DefaultHealthCheckTimeout = time.Second * 1
	// DefaultHealthCheckFailureLimit - how any consecutive health check timeouts must occur to trigger a failure
	DefaultHealthCheckFailureLimit = 3
)
View Source 
const (
	// PluginTrustDisabled - enum representing plugin trust disabled
	PluginTrustDisabled int = iota
	// PluginTrustEnabled - enum representing plugin trust enabled
	PluginTrustEnabled
	// PluginTrustWarn - enum representing plugin trust warning
	PluginTrustWarn
)
View Source 
const (
	// MonitorStopped - enum representation of monitor stopped state
	MonitorStopped monitorState = iota - 1 // default is stopped
	// MonitorStarted - enum representation of monitor started state
	MonitorStarted

	// DefaultMonitorDuration - the default monitor duration.
	DefaultMonitorDuration = time.Second * 1
)
View Source 
const (
	// DetectedState is the detected state of a plugin
	DetectedState pluginState = "detected"
	// LoadingState is the loading state of a plugin
	LoadingState pluginState = "loading"
	// LoadedState is the loaded state of a plugin
	LoadedState pluginState = "loaded"
	// UnloadedState is the unloaded state of a plugin
	UnloadedState pluginState = "unloaded"
)
View Source 
const (
	// HandlerRegistrationName is the registered name of the control runner
	HandlerRegistrationName = "control.runner"

	// PluginRunning is the running state of a plugin
	PluginRunning availablePluginState = iota - 1 // Default value (0) is Running
	// PluginStopped is the stopped state of a plugin
	PluginStopped
	// PluginDisabled is the disabled state of a plugin
	PluginDisabled

	// MaximumRestartOnDeadPluginEvent is the maximum count of restarting a plugin
	// after the event of control_event.DeadAvailablePluginEvent
	MaxPluginRestartCount = 3
)
View Source 
const (
	CONFIG_CONSTRAINTS = `` /* 700-byte string literal not displayed */

)

Variables

View Source 
var (
	ErrPoolNotFound = errors.New("plugin pool not found")
	ErrBadKey       = errors.New("bad key")
)
View Source 
var (

	// ErrLoadedPluginNotFound - error message when a loaded plugin is not found
	ErrLoadedPluginNotFound = errors.New("Loaded plugin not found")

	// ErrControllerNotStarted - error message when the Controller was not started
	ErrControllerNotStarted = errors.New("Must start Controller before use")
)
View Source 
var (
	// ErrPluginNotFound - error message when a plugin is not found
	ErrPluginNotFound = errors.New("plugin not found")
	// ErrPluginAlreadyLoaded - error message when a plugin is already loaded
	ErrPluginAlreadyLoaded = errors.New("plugin is already loaded")
	// ErrPluginNotInLoadedState - error message when a plugin must ne in a loaded state
	ErrPluginNotInLoadedState = errors.New("Plugin must be in a LoadedState")
)
View Source 
var ErrNotFound = errors.New("metric not found")

ErrNotFound is returned when Get cannot find the given namespace

View Source 
var (
	Flags = []cli.Flag{flNumberOfPLs, flAutoDiscover, flPluginTrust, flKeyringPaths, flCache, flControlRpcPort, flControlRpcAddr}
)

Functions

func MonitorDurationOption 

func MonitorDurationOption(v time.Duration) monitorOption

MonitorDurationOption sets monitor's duration to v.

func New 

func New(cfg *Config) *pluginControl

New returns a new pluginControl instance

func NewPluginConfigItem 

func NewPluginConfigItem() *pluginConfigItem

NewPluginConfigItem returns a *pluginConfigItem.

func NewPluginsConfig 

func NewPluginsConfig() map[string]*pluginConfigItem

NewPluginsConfig returns a map of *pluginConfigItems where the key is the plugin name.

func OptSetPluginConfig 

func OptSetPluginConfig(cf *pluginConfig) pluginManagerOpt

OptSetPluginConfig sets the config on the plugin manager

Types

type Config 

type Config struct {
	MaxRunningPlugins int               `json:"max_running_plugins"yaml:"max_running_plugins"`
	PluginTrust       int               `json:"plugin_trust_level"yaml:"plugin_trust_level"`
	AutoDiscoverPath  string            `json:"auto_discover_path"yaml:"auto_discover_path"`
	KeyringPaths      string            `json:"keyring_paths"yaml:"keyring_paths"`
	CacheExpiration   jsonutil.Duration `json:"cache_expiration"yaml:"cache_expiration"`
	Plugins           *pluginConfig     `json:"plugins"yaml:"plugins"`
	ListenAddr        string            `json:"listen_addr,omitempty"yaml:"listen_addr"`
	ListenPort        int               `json:"listen_port,omitempty"yaml:"listen_port"`
}

holds the configuration passed in through the SNAP config file 

Note: if this struct is modified, then the switch statement in the
      UnmarshalJSON method in this same file needs to be modified to
      match the field mapping that is defined here

func GetDefaultConfig 

func GetDefaultConfig() *Config

get the default snapd configuration

func (*Config) DeletePluginConfigDataNodeField 

func (p *Config) DeletePluginConfigDataNodeField(pluginType core.PluginType, name string, ver int, fields ...string) cdata.ConfigDataNode

func (*Config) DeletePluginConfigDataNodeFieldAll 

func (p *Config) DeletePluginConfigDataNodeFieldAll(fields ...string) cdata.ConfigDataNode

func (*Config) GetPluginConfigDataNode 

func (p *Config) GetPluginConfigDataNode(pluginType core.PluginType, name string, ver int) cdata.ConfigDataNode

func (*Config) GetPluginConfigDataNodeAll 

func (p *Config) GetPluginConfigDataNodeAll() cdata.ConfigDataNode

func (*Config) MergePluginConfigDataNode 

func (p *Config) MergePluginConfigDataNode(pluginType core.PluginType, name string, ver int, cdn *cdata.ConfigDataNode) cdata.ConfigDataNode

func (*Config) MergePluginConfigDataNodeAll 

func (p *Config) MergePluginConfigDataNodeAll(cdn *cdata.ConfigDataNode) cdata.ConfigDataNode

func (*Config) UnmarshalJSON 

func (c *Config) UnmarshalJSON(data []byte) error

UnmarshalJSON unmarshals valid json into a Config. An example Config can be found at github.com/intelsdi-x/snap/blob/master/examples/configs/snap-config-sample.json

type ControlGRPCServer 

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

func (*ControlGRPCServer) CollectMetrics 

func (pc *ControlGRPCServer) CollectMetrics(ctx context.Context, r *rpc.CollectMetricsRequest) (*rpc.CollectMetricsResponse, error)

func (*ControlGRPCServer) ExpandWildcards 

func (pc *ControlGRPCServer) ExpandWildcards(ctx context.Context, r *rpc.ExpandWildcardsRequest) (*rpc.ExpandWildcardsReply, error)

func (*ControlGRPCServer) GetAutodiscoverPaths 

func (pc *ControlGRPCServer) GetAutodiscoverPaths(ctx context.Context, _ *common.Empty) (*rpc.GetAutodiscoverPathsReply, error)

func (*ControlGRPCServer) GetPluginContentTypes 

func (pc *ControlGRPCServer) GetPluginContentTypes(ctx context.Context, r *rpc.GetPluginContentTypesRequest) (*rpc.GetPluginContentTypesReply, error)

func (*ControlGRPCServer) MatchQueryToNamespaces 

func (pc *ControlGRPCServer) MatchQueryToNamespaces(ctx context.Context, r *rpc.ExpandWildcardsRequest) (*rpc.ExpandWildcardsReply, error)

func (*ControlGRPCServer) ProcessMetrics 

func (pc *ControlGRPCServer) ProcessMetrics(ctx context.Context, r *rpc.PubProcMetricsRequest) (*rpc.ProcessMetricsReply, error)

func (*ControlGRPCServer) PublishMetrics 

func (pc *ControlGRPCServer) PublishMetrics(ctx context.Context, r *rpc.PubProcMetricsRequest) (*rpc.ErrorReply, error)

func (*ControlGRPCServer) SubscribeDeps 

func (pc *ControlGRPCServer) SubscribeDeps(ctx context.Context, r *rpc.SubscribeDepsRequest) (*rpc.SubscribeDepsReply, error)

func (*ControlGRPCServer) UnsubscribeDeps 

func (pc *ControlGRPCServer) UnsubscribeDeps(ctx context.Context, r *rpc.SubscribeDepsRequest) (*rpc.SubscribeDepsReply, error)

func (*ControlGRPCServer) ValidateDeps 

func (pc *ControlGRPCServer) ValidateDeps(ctx context.Context, r *rpc.ValidateDepsRequest) (*rpc.ValidateDepsReply, error)

type MTTrie 

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

MTTrie struct representing the root in the trie

func NewMTTrie 

func NewMTTrie() *MTTrie

NewMTTrie returns an empty trie

func (MTTrie) Add 

func (mtt MTTrie) Add(mt *metricType)

Add adds a node with the given namespace with the given MetricType

func (*MTTrie) DeleteByPlugin 

func (m *MTTrie) DeleteByPlugin(lp *loadedPlugin)

DeleteByPlugin removes all metrics from the catalog if they match a loadedPlugin

func (MTTrie) Fetch 

func (mtt MTTrie) Fetch(ns []string) ([]*metricType, error)

Fetch collects all children below a given namespace and concatenates their metric types into a single slice

func (MTTrie) Get 

func (mtt MTTrie) Get(ns []string) ([]*metricType, error)

Get works like fetch, but only returns the MT at the given node and does not gather the node's children.

func (MTTrie) Remove 

func (mtt MTTrie) Remove(ns []string) error

Remove removes all children below a given namespace

func (*MTTrie) RemoveMetric 

func (m *MTTrie) RemoveMetric(mt metricType)

RemoveMetric removes a specific metric by namespace and version from the tree

func (*MTTrie) String 

func (m *MTTrie) String() string

String prints out of the tr(i)e

type PluginControlOpt 

type PluginControlOpt func(*pluginControl)

PluginControlOpt is used to set optional parameters on the pluginControl struct

func CacheExpiration 

func CacheExpiration(t time.Duration) PluginControlOpt

CacheExpiration is the PluginControlOpt which sets the global metric cache TTL

func MaxRunningPlugins 

func MaxRunningPlugins(m int) PluginControlOpt

MaxRunningPlugins sets the maximum number of plugins to run per pool

func OptSetConfig 

func OptSetConfig(cfg *Config) PluginControlOpt

OptSetConfig sets the plugin control configuration.

Source Files

View all Source files

Directories

Path Synopsis
client
cpolicy
encoding
encrypter
rpc
Package rpc is a generated protocol buffer package.
 Package rpc is a generated protocol buffer package.
Package strategy provides basic interfaces for routing to available plugins and caching metric data.
 Package strategy provides basic interfaces for routing to available plugins and caching metric data.
fixtures

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