org.apache.nifi.schemaregistry.services

Class AvroSchemaRegistry

java.lang.Object

org.apache.nifi.components.AbstractConfigurableComponent

org.apache.nifi.controller.AbstractControllerService

org.apache.nifi.schemaregistry.services.AvroSchemaRegistry

All Implemented Interfaces:

ConfigurableComponent, ControllerService, SchemaRegistry

@Tags(value={"schema","registry","avro","json","csv"})
 @CapabilityDescription(value="Provides a service for registering and accessing schemas. You can register a schema as a dynamic property where \'name\' represents the schema name and \'value\' represents the textual representation of the actual schema following the syntax and semantics of Avro\'s Schema format.")
 @DynamicProperty(name="Schema name",
                 value="Schema Content",
                 description="Adds a named schema using the JSON string representation of an Avro schema",
                 expressionLanguageScope=NONE)
public class AvroSchemaRegistry
extends AbstractControllerService
implements SchemaRegistry

Field Summary

Fields

Modifier and Type	Field and Description
private List<PropertyDescriptor>	propertyDescriptors
private ConcurrentMap<String,RecordSchema>	recordSchemas
private static Set<SchemaField>	schemaFields
(package private) static PropertyDescriptor	VALIDATE_FIELD_NAMES

Constructor Summary

Constructors

Constructor and Description
AvroSchemaRegistry()

Method Summary

Modifier and Type	Method and Description
protected Collection<ValidationResult>	customValidate(ValidationContext validationContext)
Set<SchemaField>	getSuppliedSchemaFields()
protected PropertyDescriptor	getSupportedDynamicPropertyDescriptor(String propertyDescriptorName)
protected List<PropertyDescriptor>	getSupportedPropertyDescriptors()
protected void	init(ControllerServiceInitializationContext config)
void	onPropertyModified(PropertyDescriptor descriptor, String oldValue, String newValue)
RecordSchema	retrieveSchema(SchemaIdentifier schemaIdentifier)
private RecordSchema	retrieveSchemaByName(String schemaName)

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

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

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

equals, getPropertyDescriptor, getPropertyDescriptors, hashCode, toString, validate

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.nifi.schemaregistry.services.SchemaRegistry

retrieveSchema, retrieveSchema, retrieveSchemaText, retrieveSchemaText

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

initialize, isStateful

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

getIdentifier, getPropertyDescriptor, getPropertyDescriptors, validate

Field Detail

schemaFields

private static final Set<SchemaField> schemaFields

recordSchemas

private final ConcurrentMap<String,RecordSchema> recordSchemas

VALIDATE_FIELD_NAMES

static final PropertyDescriptor VALIDATE_FIELD_NAMES

propertyDescriptors

private List<PropertyDescriptor> propertyDescriptors

Constructor Detail

AvroSchemaRegistry

public AvroSchemaRegistry()

Method Detail

init

protected void init(ControllerServiceInitializationContext config)
             throws InitializationException

Overrides:

init in class AbstractControllerService

Throws:

InitializationException

onPropertyModified

public void onPropertyModified(PropertyDescriptor descriptor,
                               String oldValue,
                               String newValue)

Specified by:

onPropertyModified in interface ConfigurableComponent

Overrides:

onPropertyModified in class AbstractConfigurableComponent

customValidate

protected Collection<ValidationResult> customValidate(ValidationContext validationContext)

Overrides:

customValidate in class AbstractConfigurableComponent

retrieveSchemaByName

private RecordSchema retrieveSchemaByName(String schemaName)
                                   throws SchemaNotFoundException

Throws:

SchemaNotFoundException

retrieveSchema

public RecordSchema retrieveSchema(SchemaIdentifier schemaIdentifier)
                            throws IOException,
                                   SchemaNotFoundException

Specified by:

retrieveSchema in interface SchemaRegistry

Throws:

IOException

SchemaNotFoundException

getSupportedPropertyDescriptors

protected List<PropertyDescriptor> getSupportedPropertyDescriptors()

Overrides:

getSupportedPropertyDescriptors in class AbstractConfigurableComponent

getSupportedDynamicPropertyDescriptor

protected PropertyDescriptor getSupportedDynamicPropertyDescriptor(String propertyDescriptorName)

Overrides:

getSupportedDynamicPropertyDescriptor in class AbstractConfigurableComponent

getSuppliedSchemaFields

public Set<SchemaField> getSuppliedSchemaFields()

Specified by:

getSuppliedSchemaFields in interface SchemaRegistry