org.apache.nifi.avro

Class AvroReader

java.lang.Object

org.apache.nifi.components.AbstractConfigurableComponent

org.apache.nifi.controller.AbstractControllerService

org.apache.nifi.serialization.SchemaRegistryService

org.apache.nifi.avro.AvroReader

All Implemented Interfaces:

ConfigurableComponent, ControllerService, RecordReaderFactory

@Tags(value={"avro","parse","record","row","reader","delimited","comma","separated","values"})
 @CapabilityDescription(value="Parses Avro data and returns each Avro record as an separate Record object. The Avro data may contain the schema itself, or the schema can be externalized and accessed by one of the methods offered by the \'Schema Access Strategy\' property.")
public class AvroReader
extends SchemaRegistryService
implements RecordReaderFactory

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static PropertyDescriptor	CACHE_SIZE
private com.github.benmanes.caffeine.cache.LoadingCache<String,org.apache.avro.Schema>	compiledAvroSchemaCache
private AllowableValue	EMBEDDED_AVRO_SCHEMA

Fields inherited from class org.apache.nifi.serialization.SchemaRegistryService

schemaAccessStrategy

Constructor Summary

Constructors

Constructor and Description
AvroReader()

Method Summary

Modifier and Type	Method and Description
RecordReader	createRecordReader(Map<String,String> variables, InputStream in, long inputLength, ComponentLog logger)
protected AllowableValue	getDefaultSchemaAccessStrategy()
protected SchemaAccessStrategy	getSchemaAccessStrategy(String strategy, SchemaRegistry schemaRegistry, PropertyContext context)
protected List<AllowableValue>	getSchemaAccessStrategyValues()
protected List<PropertyDescriptor>	getSupportedPropertyDescriptors()
void	onEnabled(ConfigurationContext context)

Methods inherited from class org.apache.nifi.serialization.SchemaRegistryService

buildStrategyProperty, customValidate, getConfigurationContext, getSchema, getSchema, getSchemaAccessStrategy, getSchemaAcessStrategyDescriptor, getSuppliedSchemaFields, storeSchemaAccessStrategy

Methods inherited from class org.apache.nifi.controller.AbstractControllerService

abstractClearConfigContext, abstractStoreConfigContext, disabled, enabled, getControllerServiceLookup, getIdentifier, getLogger, getNodeTypeProvider, getProperty, getStateManager, init, initialize, isEnabled

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

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.nifi.serialization.RecordReaderFactory

createRecordReader

Methods inherited from interface org.apache.nifi.controller.ControllerService

initialize, isStateful

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

getIdentifier, getPropertyDescriptor, getPropertyDescriptors, onPropertyModified, validate

Field Detail

EMBEDDED_AVRO_SCHEMA

private final AllowableValue EMBEDDED_AVRO_SCHEMA

CACHE_SIZE

static final PropertyDescriptor CACHE_SIZE

compiledAvroSchemaCache

private com.github.benmanes.caffeine.cache.LoadingCache<String,org.apache.avro.Schema> compiledAvroSchemaCache

Constructor Detail

AvroReader

public AvroReader()

Method Detail

getSupportedPropertyDescriptors

protected List<PropertyDescriptor> getSupportedPropertyDescriptors()

Overrides:

getSupportedPropertyDescriptors in class SchemaRegistryService

onEnabled

@OnEnabled
public void onEnabled(ConfigurationContext context)

getSchemaAccessStrategyValues

protected List<AllowableValue> getSchemaAccessStrategyValues()

Overrides:

getSchemaAccessStrategyValues in class SchemaRegistryService

getSchemaAccessStrategy

protected SchemaAccessStrategy getSchemaAccessStrategy(String strategy,
                                                       SchemaRegistry schemaRegistry,
                                                       PropertyContext context)

Overrides:

getSchemaAccessStrategy in class SchemaRegistryService

createRecordReader

public RecordReader createRecordReader(Map<String,String> variables,
                                       InputStream in,
                                       long inputLength,
                                       ComponentLog logger)
                                throws IOException,
                                       SchemaNotFoundException

Specified by:

createRecordReader in interface RecordReaderFactory

Throws:

IOException

SchemaNotFoundException

getDefaultSchemaAccessStrategy

protected AllowableValue getDefaultSchemaAccessStrategy()

Overrides:

getDefaultSchemaAccessStrategy in class SchemaRegistryService