com.apama.cumulocity
Event SharedConnection
A connection to Cumulocity IoT which is configured to handle all requests using a shared client.
It is most useful for applications in multi-tenant deployment to get tenant-specific channels using the default per-tenant connections.
For example:
// Starting a connection
SharedConnection connection := SharedConnection.create();
// Or alternatively for multi-tenant deployments, use a tenant-specific connection object
// Uses a TenantDetails object as input parameter. TenantDetails can be retrieved using TenantSubscriptionNotifier or ApplicationSubscribedForTenant
// SharedConnection connection := SharedConnection.createForTenant(tenantDetails);
// Subscribing to a response channel
monitor.subscribe(connection.getChannel(FindManagedObjectResponse.SUBSCRIBE_CHANNEL));
// Requesting via a send channel
FindManagedObject findManagedObject := new FindManagedObject;
findManagedObject.reqId := Util.generateReqId();
send findManagedObject to connection.getChannel(FindManagedObject.SEND_CHANNEL);
- See Also:
- com.apama.cumulocity.TenantSubscriptionNotifier - to retrieve the TenantDetails object for a given tenant.
- com.apama.cumulocity.FullyConcurrentConnection - to create a connection configured to handle all requests concurrently.
- com.apama.cumulocity.SerialConnection - to create a connection configured to handle all requests using a single client.
- com.apama.cumulocity.AutoConcurrentConnection - to create a connection configured to handle requests concurrently unless this could result in getting and setting occurring in the wrong order.
create
com.apama.cumulocity.SharedConnection static create()
Returns a new SharedConnection.
This action must only be used when the application needs to work only with the per-tenant deployment. Use the createForTenant action when the application also needs to work with the multi-tenant deployment.- Returns:
- The new SharedConnection.
- See Also:
- com.apama.cumulocity.SharedConnection#createForTenant() - to create a connection when the application also needs to work with multi-tenant deployment.
createForTenant
com.apama.cumulocity.SharedConnection static createForTenant(com.apama.cumulocity.TenantDetails tenant)
Returns a new SharedConnection for a specific tenant.- Parameters:
- tenant
- Returns:
- The new SharedConnection.
destroy
void destroy()
Destroys this connection to Cumulocity IoT.
You should invoke this action on every connection after you have finished using it. Invoking this action on a connection that has already been destroyed does nothing. For example:
action ondie() {
connection.destroy();
}
getChannel
string getChannel(string channel)
Returns the channel to which events should be sent for processing.- Parameters:
- channel - The corresponding standard Cumulocity IoT channel.
- Returns:
- The channel to which events should be sent for processing.