amqp

package
v2.3.0+incompatible Latest Latest
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 Go to latest Published: Jan 30, 2017 License: MIT Imports: 10 Imported by: 15

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var (
	// ConnectRetries says how many times the client should retry a failed connection
	ConnectRetries = 10
	// ConnectRetryDelay says how long the client should wait between retries
	ConnectRetryDelay = time.Second
)
View Source 
var (
	// PrefetchCount represents the number of messages to prefetch before the AMQP server requires acknowledgment
	PrefetchCount = 3
	// PrefetchSize represents the number of bytes to prefetch before the AMQP server requires acknowledgment
	PrefetchSize = 0
)

Functions

This section is empty.

Types

type ApplicationKey 

type ApplicationKey struct {
	AppID string
	Type  ApplicationKeyType
	Field string
}

ApplicationKey represents an AMQP topic for applications

func ParseApplicationKey 

func ParseApplicationKey(key string) (*ApplicationKey, error)

ParseApplicationKey parses an AMQP application routing key string to an ApplicationKey struct

func (ApplicationKey) String 

func (t ApplicationKey) String() string

String implements the Stringer interface

type ApplicationKeyType 

type ApplicationKeyType string

ApplicationKeyType represents an AMQP application routing key 

const (
	AppEvents ApplicationKeyType = "events"
)

Topic types for Applications

type ChannelClient 

type ChannelClient interface {
	Open() error
	io.Closer
}

ChannelClient represents an AMQP channel client

type Client 

type Client interface {
	Connect() error
	Disconnect()
	IsConnected() bool

	NewPublisher(exchange string) Publisher
	NewSubscriber(exchange, name string, durable, autoDelete bool) Subscriber
}

Client connects to an AMQP server

func NewClient 

func NewClient(ctx log.Interface, username, password, host string) Client

NewClient creates a new DefaultClient

type DefaultChannelClient 

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

DefaultChannelClient represents the default client of an AMQP channel

func (*DefaultChannelClient) Close 

func (p *DefaultChannelClient) Close() error

Close closes the channel

func (*DefaultChannelClient) Open 

func (p *DefaultChannelClient) Open() error

Open opens a new channel and declares the exchange

type DefaultClient 

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

DefaultClient is the default AMQP client for The Things Network

func (*DefaultClient) Connect 

func (c *DefaultClient) Connect() error

Connect to the AMQP server. It will retry for ConnectRetries times with a delay of ConnectRetryDelay between retries

func (*DefaultClient) Disconnect 

func (c *DefaultClient) Disconnect()

Disconnect from the AMQP server

func (*DefaultClient) IsConnected 

func (c *DefaultClient) IsConnected() bool

IsConnected returns true if there is a connection to the AMQP server.

func (*DefaultClient) NewPublisher 

func (c *DefaultClient) NewPublisher(exchange string) Publisher

NewPublisher returns a new topic publisher on the specified exchange

func (*DefaultClient) NewSubscriber 

func (c *DefaultClient) NewSubscriber(exchange, name string, durable, autoDelete bool) Subscriber

NewSubscriber returns a new topic subscriber on the specified exchange

type DefaultPublisher 

type DefaultPublisher struct {
	DefaultChannelClient
}

DefaultPublisher represents the default AMQP publisher 

func (c *DefaultPublisher) PublishDownlink(dataDown types.DownlinkMessage) error

PublishDownlink publishes a downlink message to the AMQP broker 

func (c *DefaultPublisher) PublishUplink(dataUp types.UplinkMessage) error

PublishUplink publishes an uplink message to the AMQP broker

type DefaultSubscriber 

type DefaultSubscriber struct {
	DefaultChannelClient
	// contains filtered or unexported fields
}

DefaultSubscriber represents the default AMQP subscriber 

func (s *DefaultSubscriber) ConsumeUplink(queue string, handler UplinkHandler) error

ConsumeUplink consumes uplink messages in a specific queue

func (*DefaultSubscriber) QueueBind 

func (s *DefaultSubscriber) QueueBind(name, key string) error

QueueBind binds the routing key to the specified queue

func (*DefaultSubscriber) QueueDeclare 

func (s *DefaultSubscriber) QueueDeclare() (string, error)

QueueDeclare declares the queue on the AMQP broker

func (*DefaultSubscriber) QueueUnbind 

func (s *DefaultSubscriber) QueueUnbind(name, key string) error

QueueUnbind unbinds the routing key from the specified queue 

func (s *DefaultSubscriber) SubscribeAppDownlink(appID string, handler DownlinkHandler) error

SubscribeAppDownlink subscribes to all downlink messages for the given application 

func (s *DefaultSubscriber) SubscribeAppUplink(appID string, handler UplinkHandler) error

SubscribeAppUplink subscribes to all uplink messages for the given application 

func (s *DefaultSubscriber) SubscribeDeviceDownlink(appID, devID string, handler DownlinkHandler) error

SubscribeDeviceDownlink subscribes to all downlink messages for the given application and device 

func (s *DefaultSubscriber) SubscribeDeviceUplink(appID, devID string, handler UplinkHandler) error

SubscribeDeviceUplink subscribes to all uplink messages for the given application and device 

func (s *DefaultSubscriber) SubscribeDownlink(handler DownlinkHandler) error

SubscribeDownlink subscribes to all downlink messages that the current user has access to 

func (s *DefaultSubscriber) SubscribeUplink(handler UplinkHandler) error

SubscribeUplink subscribes to all uplink messages that the current user has access to

type DeviceKey 

type DeviceKey struct {
	AppID string
	DevID string
	Type  DeviceKeyType
	Field string
}

DeviceKey represents an AMQP routing key for devices

func ParseDeviceKey 

func ParseDeviceKey(key string) (*DeviceKey, error)

ParseDeviceKey parses an AMQP device routing key string to a DeviceKey struct

func (DeviceKey) String 

func (t DeviceKey) String() string

String implements the Stringer interface

type DeviceKeyType 

type DeviceKeyType string

DeviceKeyType represents the type of a device topic 

const (
	DeviceEvents   DeviceKeyType = "events"
	DeviceUplink   DeviceKeyType = "up"
	DeviceDownlink DeviceKeyType = "down"
)

Topic types for Devices

type DownlinkHandler 

type DownlinkHandler func(subscriber Subscriber, appID string, devID string, req types.DownlinkMessage)

DownlinkHandler is called for downlink messages

type Publisher 

type Publisher interface {
	ChannelClient

	PublishUplink(dataUp types.UplinkMessage) error
	PublishDownlink(dataDown types.DownlinkMessage) error
}

Publisher represents a publisher for uplink messages

type Subscriber 

type Subscriber interface {
	ChannelClient

	QueueDeclare() (string, error)
	QueueBind(name, key string) error
	QueueUnbind(name, key string) error

	SubscribeDeviceUplink(appID, devID string, handler UplinkHandler) error
	SubscribeAppUplink(appID string, handler UplinkHandler) error
	SubscribeUplink(handler UplinkHandler) error
	ConsumeUplink(queue string, handler UplinkHandler) error

	SubscribeDeviceDownlink(appID, devID string, handler DownlinkHandler) error
	SubscribeAppDownlink(appID string, handler DownlinkHandler) error
	SubscribeDownlink(handler DownlinkHandler) error
}

Subscriber represents a subscriber for uplink messages

type UplinkHandler 

type UplinkHandler func(subscriber Subscriber, appID string, devID string, req types.UplinkMessage)

UplinkHandler is called for uplink messages

Source Files

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