StreamBase and LiveView URIs

If you run multiple EventFlow fragments in StreamBase Studio, or if you explicitly specify using Any available for the listening port in a Run Configuration, the fragment launches but you may not know what StreamBase port each fragment is using.

To determine the StreamBase listening ports in use, run this epadmin command:

epadmin display services --servicetype=eventflow

This returns three lines of information about each running fragment, with the StreamBase URI on the last line. For example:

Service Name = eventflow.com_tibco_sb_sample_bestbidsandasks_BestBidsAsks0_BestBidsAsks.sbuser
Service Type = eventflow
Network Address = sb://Graemsay.local:13596

Similarly, to determine the LiveView ports in use, use the liveview service type:

epadmin display services --servicetype=liveview

This returns:

Service Name = liveview.liveview0.sample_lv_sample_helloliveview.sbuser
Service Type = liveview
Network Address = sb://Graemsay.local:10000 lv://Graemsay.local:10080

In this case, the third line shows the URI of the StreamBase server that is running the LiveView application itself, as well as the LiveView URI.

On a busy subnet with many nodes running, the output of these commands can be more than you want to see. To narrow the results to the nodes running on a single machine, use grep on macOS and Linux or the find or findstr commands on Windows to narrow the results based on the machine name of interest. For example, a command like the following:

epadmin display services servicetype=eventflow | grep Graemsay

might return these results:

Network Address = sb://Graemsay.local:46279
Network Address = sb://Graemsay.local:43254
Network Address = sb://Graemsay.local:11493
Network Address = sb://Graemsay.local:62475

When using an epadmin command to connect to a running EventFlow fragment's ports, you only need to know the node's admin port, or its node name.

However, when using a legacy client access command such as sbc, or when using the StreamBase Client API, you must know the StreamBase URI in the form sb://hostname:port, where the default hostname and port are sb://localhost:10000. For access to an TLS-enabled StreamBase server, clients must use sbs://hostname:port.

For example, the StreamBase client command sbc with its list option returns a report of the StreamBase objects in the running fragment. For example:

sbc -u sb://sbserver.example.com/nnnnn list

If the machine hosting the server is the current machine, only the port needs to be specified:

sbc -p nnnnn list

If the machine is localhost, and the port number is the traditional default, 10000, then neither host nor port need to be stated. Thus:

sbc list

A running LiveView server uses two ports: one for the StreamBase server that is running the LiveView application itself, and the second port for the LiveView URI. The default port for a LiveView server's StreamBase server instance is 10000, while the default LiveView port is 10080. For a security-enabled LiveView server, the default port is 10443.

The primary method for accessing a running LiveView server is through its embedded web server using a standard browser. For a LiveView server running on the default port, point your browser to, for example, http://localhost:10080. When a LiveView project is configured to provide access to a custom JavaScript interface, access the server with a URL such as http://localhost:10080/customname. If your LiveView project is configured to provide access to TIBCO LiveView Web™ clients, access those servers with a URL like http://localhost:10080/lvweb. In either case, use https and the 10443 port for security-enabled LiveView servers.

If you are running multiple LiveView server instances, each instance must have its own port. Determine the ports in use as described in What Port Am I Using? above.

When using TIBCO LiveView Desktop™ or the LiveView Client API, you must use a LiveView URI in the form lv://hostname:port, where the default hostname and port are lv://localhost:10080. When connecting to an TLS-enabled LiveView server, clients must use lvs://hostname:port, where the default security-enabled port is 10443.

You can edit the Run Configuration for EventFlow fragments to specify using a particular listener port.

There is a chicken and egg problem here. You must run the fragment at least once with default settings in order to create and store a Run Configuration. When that is done, open the Run Configuration for the fragment you just ran with Run>Run Configurations from Studio's top-level menu (or by using the drop-down menu to the right of the Run button in the Studio toolbar).

In the Run Configurations dialog, open EventFlow Fragment in the contents panel on the left, and select the name of the EventFlow module you just ran. The Main tab of that module's run configuration shows the port selection options.

Learn more about using the Run Configurations dialog on Editing EventFlow Run Configurations.

You can use a HOCON configuration file to specify a StreamBase listening port. Create such a configuration file using Studio's StreamBase HOCON Configuration Editor, and save the file to the src/main/configurations folder of your Studio project. The port specification is then used when the fragment is both by Studio (with the Configuration or default option selected) and when run with epadmin as part of running a StreamBase Application archive.

Specify a HOCON configuration file of type sbclientapilistener. The following shows an example of such a file that sets the listener port to an explicit value of zero, which tells the Runtime to use any available port over 1024:

name    = sbportzero
version = 1.0.0
type    = com.tibco.ep.streambase.configuration.sbclientapilistener

configuration = {
  ClientAPIListener {
    apiListenerAddress = {
      portNumber = 0
    }
  }
}

The following version sets the listener port to the value of a variable named SBPORT with a default value of 10011. You must specify a default value when specifying variable names.

name    = sbportzero
version = 1.0.0
type    = com.tibco.ep.streambase.configuration.sbclientapilistener

configuration = {
  ClientAPIListener {
    apiListenerAddress = {
      portNumber = ${SBPORT:-10011}
    }
  }
}

You then specify a value for SBPORT on the epadmin node install command line using the substitutions parameter as shown in the following example. (This command is shown on multiple lines, but must be entered as one long command.)

epadmin install node 
  --application=target/deploy_firstapp-0.0.1-SNAPSHOT-ep-application.zip 
  --nodename=B.sbuser --nodedirectory=~/tmp/Nodedirs 
  --substitutions="SBPORT=10025"

If you use a port-setting configuration file with a default value, and then forget to include the substitutions parameter, the fragment loads using the default port.

Studio reports the StreamBase listening port in four locations:

The following image shows the approximate location in the SB Test/Debug perspective of the four reporting locations, numbered as in the list above.

The methods of setting and determining the client API listening port for LiveView servers are analogous to the methods for StreamBase servers described in the previous sections.