Package com.sap.cds.services.messaging.utils

Class CloudEventUtils

java.lang.Object

com.sap.cds.services.messaging.utils.CloudEventUtils

public class CloudEventUtils
extends Object

Utilities for CloudEvents according to SAP standards

Field Summary

Fields

Modifier and Type	Field	Description
static final String	KEY_DATA
static final String	KEY_DATACONTENTTYPE
static final String	KEY_ID
static final String	KEY_SOURCE
static final String	KEY_SPECVERSION
static final String	KEY_TIME
static final String	KEY_TYPE

Constructor Summary

Constructors

Constructor	Description
CloudEventUtils()

Method Summary

Modifier and Type	Method	Description
static String	toCloudEvent(String message, String defaultType, String namespace)	Enriches the given message with cloudevents headers if not yet present
static Map<String,Object>	toCloudEvent(Map<String,Object> headers, String defaultType, String namespace)	Enriches the given headers map with cloudevents headers if not yet present
static CloudEventMessageEventContext	toCloudEventMessageContext(TopicMessageEventContext context, String eventName)	Creates the cloud event message event context from the messaging context.
static String	toJson(Map<String,Object> map)	Serializes the specified map to a JSON string.
static Map<String,Object>	toMap(String jsonString)	Deserializes the specified JSON string to a map.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

KEY_ID

public static final String KEY_ID

See Also:

• Constant Field Values

KEY_SPECVERSION

public static final String KEY_SPECVERSION

See Also:

• Constant Field Values

KEY_DATACONTENTTYPE

public static final String KEY_DATACONTENTTYPE

See Also:

• Constant Field Values

KEY_TIME

public static final String KEY_TIME

See Also:

• Constant Field Values

KEY_TYPE

public static final String KEY_TYPE

See Also:

• Constant Field Values

KEY_SOURCE

public static final String KEY_SOURCE

See Also:

• Constant Field Values

KEY_DATA

public static final String KEY_DATA

See Also:

• Constant Field Values

Constructor Details

CloudEventUtils

public CloudEventUtils()

Method Details

toCloudEvent

public static String toCloudEvent(String message,
 String defaultType,
 String namespace)

Enriches the given message with cloudevents headers if not yet present

Parameters:

message - the message to enrich

defaultType - the default type

namespace - the namespace to try to be interpreted as source

Returns:

enriched cloudevents message string

toCloudEvent

public static Map<String,Object> toCloudEvent(Map<String,Object> headers,
 String defaultType,
 String namespace)

Enriches the given headers map with cloudevents headers if not yet present

Parameters:

headers - the headers to enrich

defaultType - the default type

namespace - the namespace to try to be interpreted as source

Returns:

enriched cloudevents headers

toCloudEventMessageContext

public static CloudEventMessageEventContext toCloudEventMessageContext(TopicMessageEventContext context,
 String eventName)

Creates the cloud event message event context from the messaging context.

Parameters:

context - messaging context

eventName - CDS event name

Returns:

the CloudEventMessageEventContext

toJson

public static String toJson(Map<String,Object> map)

Serializes the specified map to a JSON string.

Parameters:

map - map to be serialized in a JSON string

Returns:

the JSON string

toMap

public static Map<String,Object> toMap(String jsonString)

Deserializes the specified JSON string to a map.

Parameters:

jsonString - JSON string to be deserialized to a map

Returns:

the map or null, if the JSON string is invalid