messaging

package
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 Go to latest Published: Jan 18, 2015 License: MIT Imports: 24 Imported by: 0

Documentation

Overview

Package messaging provides the implemetation to connect to pubnub api on google appengine. Build Date: Sep 4, 2014 Version: 3.6

Index

Constants

This section is empty.

Variables

View Source 
var Store *sessions.CookieStore

Store for storing a ref of CookieStore

Functions

func DecryptString 

func DecryptString(cipherKey string, message string) (retVal interface{}, err error)

DecryptString decodes encrypted string using the cipherKey

It accepts the following parameters: cipherKey: cipher key to use to decrypt. message: to encrypted.

returns the unencoded encrypted string, error if any.

func DeleteSession 

func DeleteSession(context appengine.Context, w http.ResponseWriter, r *http.Request, secKey string)

DeleteSession deletes the session that stores the pubInstance it accepts 

appengine.Context
http.ResponseWriter
*http.Request
secret Key

func EncryptString 

func EncryptString(cipherKey string, message string) string

EncryptString creates the base64 encoded encrypted string using the cipherKey. It accepts the following parameters: cipherKey: cipher key to use to encrypt. message: to encrypted.

returns the base64 encoded encrypted string.

func GenUuid 

func GenUuid() (string, error)

GenUuid generates a unique UUID returns the unique UUID or error.

func GetNonSubscribeTimeout 

func GetNonSubscribeTimeout() uint16

GetNonSubscribeTimeout gets the value of nonSubscribeTimeout

func GetSessionsOptionsObject 

func GetSessionsOptionsObject(age int) *sessions.Options

GetSessionsOptionsObject sets common Path, Age and HttpOnly options for the sessions. It returns the *sessions.Options object

func GetSubscribeTimeout 

func GetSubscribeTimeout() uint16

GetSubscribeTimeout gets the value of subscribeTimeout

func ParseInterfaceData 

func ParseInterfaceData(myInterface interface{}) string

ParseInterfaceData formats the data to string as per the type of the data.

It accepts the following parameters: myInterface: the interface data to parse and convert to string.

returns: the data in string format.

func ParseJSON 

func ParseJSON(contents []byte, cipherKey string) (string, string, string, error)

ParseJSON parses the json data. It extracts the actual data (value 0), Timetoken/from time in case of detailed history (value 1), pubnub channelname/timetoken/to time in case of detailed history (value 2).

It accepts the following parameters: contents: the contents to parse. cipherKey: the key to decrypt the messages (can be empty).

returns: data: as string. Timetoken/from time in case of detailed history as string. pubnub channelname/timetoken/to time in case of detailed history (value 2). error if any.

func SetConnectTimeout 

func SetConnectTimeout(val uint16)

SetConnectTimeout sets the value of connectTimeout.

func SetIV 

func SetIV(val string)

SetIV sets the value of valIV.

func SetMaxRetries 

func SetMaxRetries(val int)

SetMaxRetries sets the value of maxRetries.

func SetNonSubscribeTimeout 

func SetNonSubscribeTimeout(val uint16)

SetNonSubscribeTimeout sets the value of nonsubscribeTimeout.

func SetOrigin 

func SetOrigin(val string)

SetOrigin sets the value of _origin. Should be called before PubnubInit

func SetResumeOnReconnect 

func SetResumeOnReconnect(val bool)

SetResumeOnReconnect sets the value of resumeOnReconnect.

func SetRetryInterval 

func SetRetryInterval(val uint16)

SetRetryInterval sets the value of retryInterval.

func SetSessionKeys 

func SetSessionKeys(context appengine.Context, w http.ResponseWriter, r *http.Request, pubKey string, subKey string, secKey string, cipher string, ssl bool, uuid string)

SetSessionKeys initializes the Pubnub instance using the new Pubnub key. This is similar to New but in used to change the keys once the pubnub instance has been initialized it accepts 

appengine.Context
http.ResponseWriter
*http.Request
publishKey
subscribeKey
secretKey
cipher
ssl
uuid

func SetSubscribeTimeout 

func SetSubscribeTimeout(val uint16)

SetSubscribeTimeout sets the value of subscribeTimeout.

func VersionInfo 

func VersionInfo() string

VersionInfo returns the version of the this code along with the build date.

Types

type Pubnub 

type Pubnub struct {
	Origin            string
	PublishKey        string
	SubscribeKey      string
	SecretKey         string
	CipherKey         string
	AuthenticationKey string
	IsSSL             bool
	Uuid              string

	TimeToken      string
	SentTimeToken  string
	ResetTimeToken bool
	UserState      map[string]map[string]interface{}
	// contains filtered or unexported fields
}

Pubnub structure. origin stores the root url value of pubnub api in the current instance. publishKey stores the user specific Publish Key in the current instance. subscribeKey stores the user specific Subscribe Key in the current instance. secretKey stores the user specific Secret Key in the current instance. cipherKey stores the user specific Cipher Key in the current instance. authenticationKey stores the Authentication Key in the current instance. isSSL is true if enabled, else is false for the current instance. uuid is the unique identifier, it can be a custom value or is automatically generated. subscribedChannels keeps a list of subscribed Pubnub channels by the user in the a comma separated string. timeToken is the current value of the servertime. This will be used to appened in each request. sentTimeToken: This is the timetoken sent to the server with the request resetTimeToken: In case of a new request or an error this variable is set to true so that the timeToken will be set to 0 in the next request. presenceChannels: All the presence responses will be routed to this channel. It stores the response channels for each pubnub channel as map using the pubnub channel name as the key. subscribeChannels: All the subscribe responses will be routed to this channel. It stores the response channels for each pubnub channel as map using the pubnub channel name as the key. presenceErrorChannels: All the presence error responses will be routed to this channel. It stores the response channels for each pubnub channel as map using the pubnub channel name as the key. subscribeErrorChannels: All the subscribe error responses will be routed to this channel. It stores the response channels for each pubnub channel as map using the pubnub channel name as the key. newSubscribedChannels keeps a list of the new subscribed Pubnub channels by the user in the a comma separated string, before they are appended to the Pubnub SubscribedChannels. isPresenceHeartbeatRunning a variable to keep a check on the presence heartbeat's status Mutex to lock the operations on the instance

func New 

func New(context appengine.Context, uuid string, w http.ResponseWriter, r *http.Request, publishKey string, subscribeKey string, secretKey string, cipher string, ssl bool) *Pubnub

New initializes the Session and the Pubnub instance. It accepts: 

appengine.Context
uuid
http.ResponseWriter
*http.Request
publishKey
subscribeKey
secretKey
cipher
ssl

It returns the Pubnub Instance

func NewPubnub 

func NewPubnub(context appengine.Context, w http.ResponseWriter, r *http.Request, publishKey string, subscribeKey string, secretKey string, cipherKey string, sslOn bool, customUuid string) *Pubnub

NewPubnub initializes pubnub struct with the user provided values. And then initiates the origin by appending the protocol based upon the sslOn argument. Then it uses the customuuid or generates the uuid.

It accepts the following parameters: publishKey is the user specific Publish Key. Mandatory. subscribeKey is the user specific Subscribe Key. Mandatory. secretKey is the user specific Secret Key. Accepts empty string if not used. cipherKey stores the user specific Cipher Key. Accepts empty string if not used. sslOn is true if enabled, else is false. customUuid is the unique identifier, it can be a custom value or sent as empty for automatic generation.

returns the pointer to Pubnub instance.

func (*Pubnub) AuditPresence 

func (pub *Pubnub) AuditPresence(context appengine.Context, w http.ResponseWriter, r *http.Request, channel string, callbackChannel chan []byte, errorChannel chan []byte)

AuditPresence will make a call to display the permissions for a channel or subkey

channel is options and if not provided will set the permissions at subkey level

Both callbackChannel and errorChannel are mandatory. If either is nil the code will panic

func (*Pubnub) AuditSubscribe 

func (pub *Pubnub) AuditSubscribe(context appengine.Context, w http.ResponseWriter, r *http.Request, channel string, callbackChannel chan []byte, errorChannel chan []byte)

AuditSubscribe will make a call to display the permissions for a channel or subkey

channel is options and if not provided will set the permissions at subkey level

Both callbackChannel and errorChannel are mandatory. If either is nil the code will panic

func (*Pubnub) CloseExistingConnection 

func (pub *Pubnub) CloseExistingConnection()

CloseExistingConnection closes the open subscribe/presence connection.

func (*Pubnub) GetAuthenticationKey 

func (pub *Pubnub) GetAuthenticationKey() string

GetAuthenticationKey gets the value of authentication key

func (*Pubnub) GetPresenceHeartbeatInterval 

func (pub *Pubnub) GetPresenceHeartbeatInterval() uint16

GetPresenceHeartbeatInterval gets the value of presenceHeartbeatInterval

func (*Pubnub) GetTime 

func (pub *Pubnub) GetTime(context appengine.Context, w http.ResponseWriter, r *http.Request, callbackChannel chan []byte, errorChannel chan []byte)

GetTime is the struct Pubnub's instance method that calls the ExecuteTime method to process the time request. . It accepts the following parameters: callbackChannel on which to send the response. errorChannel on which to send the error response.

Both callbackChannel and errorChannel are mandatory. If either is nil the code will panic

func (*Pubnub) GetUUID 

func (pub *Pubnub) GetUUID() string

GetUUID returns the value of UUID

func (*Pubnub) GetUserState 

func (pub *Pubnub) GetUserState(context appengine.Context, w http.ResponseWriter, r *http.Request, channel string, callbackChannel chan []byte, errorChannel chan []byte)

GetUserState is the struct Pubnub's instance method which creates and posts the GetUserState request to get the connected users details.

It accepts the following parameters: channel: a single value of the pubnub channel. callbackChannel on which to send the response. errorChannel on which the error response is sent.

Both callbackChannel and errorChannel are mandatory. If either is nil the code will panic

func (*Pubnub) GlobalHereNow 

func (pub *Pubnub) GlobalHereNow(context appengine.Context, w http.ResponseWriter, r *http.Request, showUuid bool, includeUserState bool, callbackChannel chan []byte, errorChannel chan []byte)

GlobalHereNow is the struct Pubnub's instance method which creates and posts the globalherenow request to get the connected users details.

It accepts the following parameters: showUuid: if true uuids of devices will be fetched in the respose includeUserState: if true the user states of devices will be fetched in the respose callbackChannel on which to send the response. errorChannel on which the error response is sent.

Both callbackChannel and errorChannel are mandatory. If either is nil the code will panic

func (*Pubnub) GrantPresence 

func (pub *Pubnub) GrantPresence(context appengine.Context, w http.ResponseWriter, r *http.Request, channel string, read bool, write bool, ttl int, callbackChannel chan []byte, errorChannel chan []byte)

GrantPresence is used to give a presence channel read, write permissions and set TTL values for it. To grant a permission set read or write as true to revoke all perms set read and write false and ttl as -1

channel is options and if not provided will set the permissions at subkey level

Both callbackChannel and errorChannel are mandatory. If either is nil the code will panic

func (*Pubnub) GrantSubscribe 

func (pub *Pubnub) GrantSubscribe(context appengine.Context, w http.ResponseWriter, r *http.Request, channel string, read bool, write bool, ttl int, callbackChannel chan []byte, errorChannel chan []byte)

GrantSubscribe is used to give a subscribe channel read, write permissions and set TTL values for it. To grant a permission set read or write as true to revoke all perms set read and write false and ttl as -1

channel is options and if not provided will set the permissions at subkey level

Both callbackChannel and errorChannel are mandatory. If either is nil the code will panic

func (*Pubnub) HereNow 

func (pub *Pubnub) HereNow(context appengine.Context, w http.ResponseWriter, r *http.Request, channel string, showUuid bool, includeUserState bool, callbackChannel chan []byte, errorChannel chan []byte)

HereNow is the struct Pubnub's instance method which creates and posts the herenow request to get the connected users details.

It accepts the following parameters: channel: a single value of the pubnub channel. callbackChannel on which to send the response. errorChannel on which the error response is sent.

Both callbackChannel and errorChannel are mandatory. If either is nil the code will panic

func (*Pubnub) History 

func (pub *Pubnub) History(context appengine.Context, w http.ResponseWriter, r *http.Request, channel string, limit int, start int64, end int64, reverse bool, callbackChannel chan []byte, errorChannel chan []byte)

History is the struct Pubnub's instance method which creates and post the History request for a single pubnub channel.

It parses the response to get the data and return it to the channel.

It accepts the following parameters: channel: a single value of the pubnub channel. limit: number of history messages to return. start: start time from where to begin the history messages. end: end time till where to get the history messages. reverse: to fetch the messages in ascending order callbackChannel on which to send the response. errorChannel on which the error response is sent.

Both callbackChannel and errorChannel are mandatory. If either is nil the code will panic

func (*Pubnub) Publish 

func (pub *Pubnub) Publish(context appengine.Context, w http.ResponseWriter, r *http.Request, channel string, message interface{}, callbackChannel chan []byte, errorChannel chan []byte)

Publish is the struct Pubnub's instance method that creates a publish request and calls SendPublishRequest to post the request.

It calls the InvalidChannel and InvalidMessage methods to validate the Pubnub channels and message. Calls the GetHmacSha256 to generate a signature if a secretKey is to be used. Creates the publish url Calls json marshal Calls the EncryptString method is the cipherkey is used and calls json marshal Closes the channel after the response is received

It accepts the following parameters: channel: The Pubnub channel to which the message is to be posted. message: message to be posted. callbackChannel: Channel on which to send the response back. errorChannel on which the error response is sent.

Both callbackChannel and errorChannel are mandatory. If either is nil the code will panic

func (*Pubnub) SetAuthenticationKey 

func (pub *Pubnub) SetAuthenticationKey(context appengine.Context, w http.ResponseWriter, r *http.Request, val string)

SetAuthenticationKey sets the value of authentication key

func (*Pubnub) SetUUID 

func (pub *Pubnub) SetUUID(context appengine.Context, w http.ResponseWriter, r *http.Request, val string)

SetUUID sets the value of UUID

func (*Pubnub) SetUserStateJSON 

func (pub *Pubnub) SetUserStateJSON(context appengine.Context, w http.ResponseWriter, r *http.Request, channel string, jsonString string, callbackChannel chan []byte, errorChannel chan []byte)

SetUserStateJSON is the struct Pubnub's instance method which creates and posts the User state request using JSON as input

It accepts the following parameters: channel: a single value of the pubnub channel. jsonString: the user state in JSON format. If invalid an error will be thrown callbackChannel on which to send the response. errorChannel on which the error response is sent.

Both callbackChannel and errorChannel are mandatory. If either is nil the code will panic

func (*Pubnub) SetUserStateKeyVal 

func (pub *Pubnub) SetUserStateKeyVal(context appengine.Context, w http.ResponseWriter, r *http.Request, channel string, key string, val string, callbackChannel chan []byte, errorChannel chan []byte)

SetUserStateKeyVal is the struct Pubnub's instance method which creates and posts the userstate request using a key/val map

It accepts the following parameters: channel: a single value of the pubnub channel. key: user states key value: user stated value callbackChannel on which to send the response. errorChannel on which the error response is sent.

Both callbackChannel and errorChannel are mandatory. If either is nil the code will panic

func (*Pubnub) WhereNow 

func (pub *Pubnub) WhereNow(context appengine.Context, w http.ResponseWriter, r *http.Request, uuid string, callbackChannel chan []byte, errorChannel chan []byte)

WhereNow is the struct Pubnub's instance method which creates and posts the wherenow request to get the connected users details.

It accepts the following parameters: uuid: devcie uuid to pass to the wherenow query callbackChannel on which to send the response. errorChannel on which the error response is sent.

Both callbackChannel and errorChannel are mandatory. If either is nil the code will panic

type PubnubUnitTest 

type PubnubUnitTest struct {
}

PubnubUnitTest structure used to expose some data for unit tests.

func (*PubnubUnitTest) GetSentTimeToken 

func (pubtest *PubnubUnitTest) GetSentTimeToken(pub *Pubnub) string

GetSentTimeToken returns the timetoken sent to the server, is used only for unit tests

func (*PubnubUnitTest) GetTimeToken 

func (pubtest *PubnubUnitTest) GetTimeToken(pub *Pubnub) string

GetTimeToken returns the latest timetoken received from the server, is used only for unit tests

Source Files

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