transforms

package
v2.0.2-dev.22 Latest Latest
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 Go to latest Published: Oct 6, 2021 License: Apache-2.0 Imports: 27 Imported by: 2

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Index

Constants

View Source 
const (
	BatchByCountOnly = iota
	BatchByTimeOnly
	BatchByTimeAndCount
)

Variables

This section is empty.

Functions

This section is empty.

Types

type BatchConfig 

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

BatchConfig ...

func NewBatchByCount 

func NewBatchByCount(batchThreshold int) (*BatchConfig, error)

NewBatchByCount create, initializes and returns a new instance for BatchConfig

func NewBatchByTime 

func NewBatchByTime(timeInterval string) (*BatchConfig, error)

NewBatchByTime create, initializes and returns a new instance for BatchConfig

func NewBatchByTimeAndCount 

func NewBatchByTimeAndCount(timeInterval string, batchThreshold int) (*BatchConfig, error)

NewBatchByTimeAndCount create, initializes and returns a new instance for BatchConfig

func (*BatchConfig) Batch 

func (batch *BatchConfig) Batch(ctx interfaces.AppFunctionContext, data interface{}) (bool, interface{})

Batch ...

type BatchMode 

type BatchMode int

BatchMode Enum for choosing behavior of Batch. Default is CountAndTime.

type Compression 

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

func NewCompression 

func NewCompression() Compression

NewCompression creates, initializes and returns a new instance of Compression

func (*Compression) CompressWithGZIP 

func (compression *Compression) CompressWithGZIP(ctx interfaces.AppFunctionContext, data interface{}) (bool, interface{})

CompressWithGZIP compresses data received as either a string,[]byte, or json.Marshaller using gzip algorithm and returns a base64 encoded string as a []byte.

func (*Compression) CompressWithZLIB 

func (compression *Compression) CompressWithZLIB(ctx interfaces.AppFunctionContext, data interface{}) (bool, interface{})

CompressWithZLIB compresses data received as either a string,[]byte, or json.Marshaller using zlib algorithm and returns a base64 encoded string as a []byte.

type Conversion 

type Conversion struct {
}

Conversion houses various built in conversion transforms (XML, JSON, CSV)

func NewConversion 

func NewConversion() Conversion

NewConversion creates, initializes and returns a new instance of Conversion

func (Conversion) TransformToJSON 

func (f Conversion) TransformToJSON(ctx interfaces.AppFunctionContext, data interface{}) (continuePipeline bool, stringType interface{})

TransformToJSON transforms an EdgeX event to JSON. It will return an error and stop the pipeline if a non-edgex event is received or if no data is received.

func (Conversion) TransformToXML 

func (f Conversion) TransformToXML(ctx interfaces.AppFunctionContext, data interface{}) (continuePipeline bool, stringType interface{})

TransformToXML transforms an EdgeX event to XML. It will return an error and stop the pipeline if a non-edgex event is received or if no data is received.

type CoreData 

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

func NewCoreDataBinaryReading 

func NewCoreDataBinaryReading(profileName string, deviceName string, resourceName string, mediaType string) *CoreData

NewCoreDataBinaryReading Is provided to interact with CoreData to add a binary reading

func NewCoreDataSimpleReading 

func NewCoreDataSimpleReading(profileName string, deviceName string, resourceName string, valueType string) *CoreData

NewCoreDataSimpleReading Is provided to interact with CoreData to add a simple reading

func (*CoreData) PushToCoreData 

func (cdc *CoreData) PushToCoreData(ctx interfaces.AppFunctionContext, data interface{}) (bool, interface{})

PushToCoreData pushes the provided value as an event to CoreData using the device name and reading name that have been set. If validation is turned on in CoreServices then your deviceName and readingName must exist in the CoreMetadata and be properly registered in EdgeX.

type Encryption 

type Encryption struct {
	SecretPath           string
	SecretName           string
	EncryptionKey        string
	InitializationVector string
}

func NewEncryption 

func NewEncryption(encryptionKey string, initializationVector string) Encryption

NewEncryption creates, initializes and returns a new instance of Encryption

func NewEncryptionWithSecrets 

func NewEncryptionWithSecrets(secretPath string, secretName string, initializationVector string) Encryption

NewEncryptionWithSecrets creates, initializes and returns a new instance of Encryption configured to retrieve the encryption key from the Secret Store

func (Encryption) EncryptWithAES 

func (aesData Encryption) EncryptWithAES(ctx interfaces.AppFunctionContext, data interface{}) (bool, interface{})

EncryptWithAES encrypts a string, []byte, or json.Marshaller type using AES encryption. It will return a Base64 encode []byte of the encrypted data.

type Filter 

type Filter struct {
	FilterValues []string
	FilterOut    bool
	// contains filtered or unexported fields
}

Filter houses various the parameters for which filter transforms filter on

func NewFilterFor 

func NewFilterFor(filterValues []string) Filter

NewFilterFor creates, initializes and returns a new instance of Filter that defaults FilterOut to false, so it is filtering for specified values

func NewFilterOut 

func NewFilterOut(filterValues []string) Filter

NewFilterOut creates, initializes and returns a new instance of Filter that defaults FilterOut to true, so it is filtering out specified values

func (Filter) FilterByDeviceName 

func (f Filter) FilterByDeviceName(ctx interfaces.AppFunctionContext, data interface{}) (continuePipeline bool, result interface{})

FilterByDeviceName filters based on the specified Device Names, aka Instance of a Device. If FilterOut is false, it filters out those Events not associated with the specified Device Names listed in FilterValues. If FilterOut is true, it out those Events that are associated with the specified Device Names listed in FilterValues.

func (Filter) FilterByProfileName 

func (f Filter) FilterByProfileName(ctx interfaces.AppFunctionContext, data interface{}) (continuePipeline bool, result interface{})

FilterByProfileName filters based on the specified Device Profile, aka Class of Device. If FilterOut is false, it filters out those Events not associated with the specified Device Profile listed in FilterValues. If FilterOut is true, it out those Events that are associated with the specified Device Profile listed in FilterValues.

func (Filter) FilterByResourceName 

func (f Filter) FilterByResourceName(ctx interfaces.AppFunctionContext, data interface{}) (continuePipeline bool, result interface{})

FilterByResourceName filters based on the specified Reading resource names, aka Instance of a Device. If FilterOut is false, it filters out those Event Readings not associated with the specified Resource Names listed in FilterValues. If FilterOut is true, it out those Event Readings that are associated with the specified Resource Names listed in FilterValues. This function will return an error and stop the pipeline if a non-edgex event is received or if no data is received.

func (Filter) FilterBySourceName 

func (f Filter) FilterBySourceName(ctx interfaces.AppFunctionContext, data interface{}) (continuePipeline bool, result interface{})

FilterBySourceName filters based on the specified Source for the Event, aka resource or command name. If FilterOut is false, it filters out those Events not associated with the specified Source listed in FilterValues. If FilterOut is true, it out those Events that are associated with the specified Source listed in FilterValues.

type HTTPSender 

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

HTTPSender ...

func NewHTTPSender 

func NewHTTPSender(url string, mimeType string, persistOnError bool) HTTPSender

NewHTTPSender creates, initializes and returns a new instance of HTTPSender

func NewHTTPSenderWithOptions 

func NewHTTPSenderWithOptions(options HTTPSenderOptions) HTTPSender

NewHTTPSenderWithOptions creates, initializes and returns a new instance of HTTPSender configured with provided options

func NewHTTPSenderWithSecretHeader 

func NewHTTPSenderWithSecretHeader(url string, mimeType string, persistOnError bool, headerName string, secretPath string, secretName string) HTTPSender

NewHTTPSenderWithSecretHeader creates, initializes and returns a new instance of HTTPSender configured to use a secret header

func (HTTPSender) HTTPPost 

func (sender HTTPSender) HTTPPost(ctx interfaces.AppFunctionContext, data interface{}) (bool, interface{})

HTTPPost will send data from the previous function to the specified Endpoint via http POST. If no previous function exists, then the event that triggered the pipeline will be used. An empty string for the mimetype will default to application/json.

func (HTTPSender) HTTPPut 

func (sender HTTPSender) HTTPPut(ctx interfaces.AppFunctionContext, data interface{}) (bool, interface{})

HTTPPut will send data from the previous function to the specified Endpoint via http PUT. If no previous function exists, then the event that triggered the pipeline will be used. An empty string for the mimetype will default to application/json.

type HTTPSenderOptions 

type HTTPSenderOptions struct {
	// URL of destination
	URL string
	// MimeType to send to destination
	MimeType string
	// PersistOnError enables use of store & forward loop if true
	PersistOnError bool
	// HTTPHeaderName to use for passing configured secret
	HTTPHeaderName string
	// SecretPath to search for configured secret
	SecretPath string
	// SecretName for configured secret
	SecretName string
	// URLFormatter specifies custom formatting behavior to be applied to configured URL.
	// If nothing specified, default behavior is to attempt to replace placeholders in the
	// form '{some-context-key}' with the values found in the context storage.
	URLFormatter StringValuesFormatter
	// ContinueOnSendError allows execution of subsequent chained senders after errors if true
	ContinueOnSendError bool
	// ReturnInputData enables chaining multiple HTTP senders if true
	ReturnInputData bool
}

HTTPSenderOptions contains all options available to the sender

type JSONLogic 

type JSONLogic struct {
	Rule string
}

JSONLogic ...

func NewJSONLogic 

func NewJSONLogic(rule string) JSONLogic

NewJSONLogic creates, initializes and returns a new instance of HTTPSender

func (JSONLogic) Evaluate 

func (logic JSONLogic) Evaluate(ctx interfaces.AppFunctionContext, data interface{}) (bool, interface{})

Evaluate ...

type MQTTSecretConfig 

type MQTTSecretConfig struct {
	// BrokerAddress should be set to the complete broker address i.e. mqtts://mosquitto:8883/mybroker
	BrokerAddress string
	// ClientId to connect with the broker with.
	ClientId string
	// The name of the path in secret provider to retrieve your secrets
	SecretPath string
	// AutoReconnect indicated whether or not to retry connection if disconnected
	AutoReconnect bool
	// KeepAlive is the interval duration between client sending keepalive ping to broker
	KeepAlive string
	// ConnectTimeout is the duration for timing out on connecting to the broker
	ConnectTimeout string
	// Topic that you wish to publish to
	Topic string
	// QoS for MQTT Connection
	QoS byte
	// Retain setting for MQTT Connection
	Retain bool
	// SkipCertVerify
	SkipCertVerify bool
	// AuthMode indicates what to use when connecting to the broker. Options are "none", "cacert" , "usernamepassword", "clientcert".
	// If a CA Cert exists in the SecretPath then it will be used for all modes except "none".
	AuthMode string
}

MQTTSecretConfig ...

type MQTTSecretSender 

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

MQTTSecretSender ...

func NewMQTTSecretSender 

func NewMQTTSecretSender(mqttConfig MQTTSecretConfig, persistOnError bool) *MQTTSecretSender

NewMQTTSecretSender ...

func NewMQTTSecretSenderWithTopicFormatter 

func NewMQTTSecretSenderWithTopicFormatter(mqttConfig MQTTSecretConfig, persistOnError bool, topicFormatter StringValuesFormatter) *MQTTSecretSender

NewMQTTSecretSenderWithTopicFormatter allows passing a function to build a final publish topic from the combination of the configured topic and the input parameters passed to MQTTSend

func (*MQTTSecretSender) MQTTSend 

func (sender *MQTTSecretSender) MQTTSend(ctx interfaces.AppFunctionContext, data interface{}) (bool, interface{})

MQTTSend sends data from the previous function to the specified MQTT broker. If no previous function exists, then the event that triggered the pipeline will be used.

type ResponseData 

type ResponseData struct {
	ResponseContentType string
}

ResponseData houses transform for outputting data to configured trigger response, i.e. message bus

func NewResponseData 

func NewResponseData() ResponseData

NewResponseData creates, initializes and returns a new instance of ResponseData

func (ResponseData) SetResponseData 

func (f ResponseData) SetResponseData(ctx interfaces.AppFunctionContext, data interface{}) (bool, interface{})

SetResponseData sets the response data to that passed in from the previous function. It will return an error and stop the pipeline if the input data is not of type []byte, string or json.Marshaller

type StringValuesFormatter 

type StringValuesFormatter func(string, interfaces.AppFunctionContext, interface{}) (string, error)

StringValuesFormatter defines a function signature to perform string formatting operations using an AppFunction payload.

type Tags 

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

Tags contains the list of Tag key/values

func NewTags 

func NewTags(tags map[string]string) Tags

NewTags creates, initializes and returns a new instance of Tags

func (*Tags) AddTags 

func (t *Tags) AddTags(ctx interfaces.AppFunctionContext, data interface{}) (bool, interface{})

AddTags adds the pre-configured list of tags to the Event's tags collection.

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