org.apache.nifi.processors.standard

Class JoltTransformJSON

java.lang.Object

org.apache.nifi.components.AbstractConfigurableComponent

org.apache.nifi.processor.AbstractSessionFactoryProcessor

org.apache.nifi.processor.AbstractProcessor

org.apache.nifi.processors.standard.JoltTransformJSON

All Implemented Interfaces:

ConfigurableComponent, Processor

@EventDriven
 @SideEffectFree
 @SupportsBatching
 @Tags(value={"json","jolt","transform","shiftr","chainr","defaultr","removr","cardinality","sort"})
 @InputRequirement(value=INPUT_REQUIRED)
 @WritesAttribute(attribute="mime.type",
                 description="Always set to application/json")
 @CapabilityDescription(value="Applies a list of Jolt specifications to the flowfile JSON payload. A new FlowFile is created with transformed content and is routed to the \'success\' relationship. If the JSON transform fails, the original FlowFile is routed to the \'failure\' relationship.")
 @RequiresInstanceClassLoading
public class JoltTransformJSON
extends AbstractProcessor

Field Summary

Fields

Modifier and Type	Field and Description
static AllowableValue	CARDINALITY
static AllowableValue	CHAINR
static PropertyDescriptor	CUSTOM_CLASS
private ClassLoader	customClassLoader
static AllowableValue	CUSTOMR
private static String	DEFAULT_CHARSET
static AllowableValue	DEFAULTR
static PropertyDescriptor	JOLT_SPEC
static PropertyDescriptor	JOLT_TRANSFORM
static AllowableValue	MODIFIER_DEFAULTR
static AllowableValue	MODIFIER_DEFINER
static AllowableValue	MODIFIER_OVERWRITER
static PropertyDescriptor	MODULES
static PropertyDescriptor	PRETTY_PRINT
private static List<PropertyDescriptor>	properties
static Relationship	REL_FAILURE
static Relationship	REL_SUCCESS
private static Set<Relationship>	relationships
static AllowableValue	REMOVR
static AllowableValue	SHIFTR
static AllowableValue	SORTR
(package private) static PropertyDescriptor	TRANSFORM_CACHE_SIZE
private com.github.benmanes.caffeine.cache.Cache<Optional<String>,com.bazaarvoice.jolt.JoltTransform>	transformCache It is a cache for transform objects.

Constructor Summary

Constructors

Constructor and Description
JoltTransformJSON()

Method Summary

Modifier and Type	Method and Description
private com.bazaarvoice.jolt.JoltTransform	createTransform(ProcessContext context, FlowFile flowFile)
protected Collection<ValidationResult>	customValidate(ValidationContext validationContext)
protected FilenameFilter	getJarFilenameFilter()
Set<Relationship>	getRelationships()
protected List<PropertyDescriptor>	getSupportedPropertyDescriptors()
private com.bazaarvoice.jolt.JoltTransform	getTransform(ProcessContext context, FlowFile flowFile)
void	onTrigger(ProcessContext context, ProcessSession session)
private String	readTransform(PropertyValue propertyValue)
private String	readTransform(PropertyValue propertyValue, FlowFile flowFile)
void	setup(ProcessContext context)

Methods inherited from class org.apache.nifi.processor.AbstractProcessor

onTrigger

Methods inherited from class org.apache.nifi.processor.AbstractSessionFactoryProcessor

getControllerServiceLookup, getIdentifier, getLogger, getNodeTypeProvider, init, initialize, isConfigurationRestored, isScheduled, toString, updateConfiguredRestoredTrue, updateScheduledFalse, updateScheduledTrue

Methods inherited from class org.apache.nifi.components.AbstractConfigurableComponent

equals, getPropertyDescriptor, getPropertyDescriptors, getSupportedDynamicPropertyDescriptor, hashCode, onPropertyModified, validate

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.nifi.processor.Processor

isStateful

Methods inherited from interface org.apache.nifi.components.ConfigurableComponent

getPropertyDescriptor, getPropertyDescriptors, onPropertyModified, validate

Field Detail

SHIFTR

public static final AllowableValue SHIFTR

CHAINR

public static final AllowableValue CHAINR

DEFAULTR

public static final AllowableValue DEFAULTR

REMOVR

public static final AllowableValue REMOVR

CARDINALITY

public static final AllowableValue CARDINALITY

SORTR

public static final AllowableValue SORTR

CUSTOMR

public static final AllowableValue CUSTOMR

MODIFIER_DEFAULTR

public static final AllowableValue MODIFIER_DEFAULTR

MODIFIER_OVERWRITER

public static final AllowableValue MODIFIER_OVERWRITER

MODIFIER_DEFINER

public static final AllowableValue MODIFIER_DEFINER

JOLT_TRANSFORM

public static final PropertyDescriptor JOLT_TRANSFORM

JOLT_SPEC

public static final PropertyDescriptor JOLT_SPEC

CUSTOM_CLASS

public static final PropertyDescriptor CUSTOM_CLASS

MODULES

public static final PropertyDescriptor MODULES

TRANSFORM_CACHE_SIZE

static final PropertyDescriptor TRANSFORM_CACHE_SIZE

PRETTY_PRINT

public static final PropertyDescriptor PRETTY_PRINT

REL_SUCCESS

public static final Relationship REL_SUCCESS

REL_FAILURE

public static final Relationship REL_FAILURE

properties

private static final List<PropertyDescriptor> properties

relationships

private static final Set<Relationship> relationships

customClassLoader

private volatile ClassLoader customClassLoader

DEFAULT_CHARSET

private static final String DEFAULT_CHARSET

See Also:

Constant Field Values

transformCache

private com.github.benmanes.caffeine.cache.Cache<Optional<String>,com.bazaarvoice.jolt.JoltTransform> transformCache

It is a cache for transform objects. It keep values indexed by jolt specification string. For some cases the key could be empty. It means that it represents default transform (e.g. for custom transform when there is no jolt-record-spec specified).

Constructor Detail

JoltTransformJSON

public JoltTransformJSON()

Method Detail

getRelationships

public Set<Relationship> getRelationships()

Specified by:

getRelationships in interface Processor

Overrides:

getRelationships in class AbstractSessionFactoryProcessor

getSupportedPropertyDescriptors

protected List<PropertyDescriptor> getSupportedPropertyDescriptors()

Overrides:

getSupportedPropertyDescriptors in class AbstractConfigurableComponent

customValidate

protected Collection<ValidationResult> customValidate(ValidationContext validationContext)

Overrides:

customValidate in class AbstractConfigurableComponent

onTrigger

public void onTrigger(ProcessContext context,
                      ProcessSession session)
               throws ProcessException

Specified by:

onTrigger in class AbstractProcessor

Throws:

ProcessException

getTransform

private com.bazaarvoice.jolt.JoltTransform getTransform(ProcessContext context,
                                                        FlowFile flowFile)

setup

@OnScheduled
public void setup(ProcessContext context)

createTransform

private com.bazaarvoice.jolt.JoltTransform createTransform(ProcessContext context,
                                                           FlowFile flowFile)
                                                    throws Exception

Throws:

Exception

readTransform

private String readTransform(PropertyValue propertyValue,
                             FlowFile flowFile)

readTransform

private String readTransform(PropertyValue propertyValue)

getJarFilenameFilter

protected FilenameFilter getJarFilenameFilter()