Common Event Manager

Common Event Manager (cem) provides the common event debugging and testing capabilities that enable you to print common event information such as all common event subscribers, sent common events, and recipients, and publish common events.

Environment Requirements

Before using this tool, you need to obtain hdc and run the hdc shell command.

cem Commands

Command	Description
help	Displays the cem help information.
publish	Publishes a common event.
dump	Dumps information about common events.

help

# Display the cem help information.
cem help

publish

# Publish a common event.
cem publish [<options>]

Parameters

Name	Description
-e/--event	Name of the common event to publish. This parameter is mandatory.
-o/--ordered	Indicates that the common event to publish is ordered. By default, non-ordered events are published. This parameter is optional.
-c/--code	Result code of the common event. This parameter is optional.
-d/--data	Data carried in the common event. This parameter is optional.
-h/--help	Help information.

Example

# Publish a common event named testevent.
cem publish --event "testevent"

# Publish an ordered common event named testevent. The result code of the event is 100 and the data carried is "this is data".
cem publish -e "testevent" -o -c 100 -d "this is data"

dump

NOTE

Common Event Manager has two editions: eng and user. The dump command can be used only in the eng edition. If it is used in the user edition, the message error: user version cannot use dump is reported.

# Dumps information about common events.
cem dump [<options>]

Parameters

Name	Description
-a/--all	Information about all common events that have been sent since system startup.
-e/--event	Information about a specific event.
-h/--help	Help information.

Example

# Display details of a common event named testevent.
cem dump -e "testevent"