streamtool chappconfig

Usage

chappconfig [-d,--domain-id <did>] [-i,--instance-id <instance>] [--description <description>] [--property <name=value>] ... [-U,--User <user>] [-h,--help] [--trace <level>] [-v,--verbose <level>] [--zkconnect {<host>:<port>},... | --embeddedzk] <config-name>

The streamtool chappconfig command updates a configuration that enables connection to an external application.

Authority

To run this command, you must have write authority on the application configuration security element that you want to update.

For more information about access control lists, see streamtool lsacl and streamtool lsjobpermission.

Description

Use this command to change the configuration properties that are used to make a connection to an external application, such as an Internet Of Things application. You can change the values of properties or add new properties.

Options

-d,--domain-id <did>
Specifies the domain identifier.

If you do not specify this option, Streams uses the domain name that is set in the STREAMS_DOMAIN_ID environment variable. By default, that domain name is StreamsDomain. If you are using the interactive streamtool interface, it uses the name of the active domain for the current streamtool session or else it prompts you for the domain name.

The active domain for the current streamtool session is set every time that you successfully run a streamtool command with a -d or --domain-id option. Alternatively, you can run the streamtool domain command in the interactive interface.

--description <description>
Specifies a description for the application configuration. The description can be 1024 characters in length. If the description contains blank characters, it must be enclosed in single or double quotation marks. Quotation marks within the description must be preceded by a backslash (\).
--embeddedzk

Specifies to use the embedded copy of ZooKeeper. This option is not supported within the interactive streamtool interface.

If you are not using the interactive streamtool interface and you do not specify either this option or the --zkconnect option, Streams uses the ZooKeeper connection that is associated with the active domain or the domain that is specified in the --domain-id option. Streams determines which connection maps to the domain by using cached information about the domains. In this scenario, if the domain identifier is not unique in the Streams configuration cache, the command fails.

-h,--help
Specifies to show the command syntax.
-i,--instance-id <instance>
Specifies the instance identifier.

If you do not specify this option, Streams runs the command by using the current domain settings.

--property <name=value>
Specifies a property name and value pair to add to or change in the configuration. This option can be specified multiple times and has an additive effect.
--trace <level>
Specifies the trace setting. The following valid levels are listed in order of increasing verbosity, which is to say that the first level in the list generates the least amount of information:
  • off
  • error
  • warn
  • info
  • debug
  • trace
The default value is off.
-U,--User <user>
Specifies an Streams user ID that has authority to run the command.
-v,--verbose <level>
Specifies to provide more detailed command output. The verbosity level can be 0-3, where 0 disables detailed reporting and each increment provides more detailed output.
--zkconnect <{<host>:<port>},...>

The name of one or more host and port pairs that specify the configured ZooKeeper servers. This option is not supported within the interactive streamtool interface.

If you are not using the interactive streamtool interface and you do not specify this option, Streams tries to use:

  1. The --embeddedzk option
  2. The value from the STREAMS_ZKCONNECT environment variable
  3. A ZooKeeper connection string that is derived from cached information about the current domain.

Arguments

config-name
Specifies the name of the application configuration.