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• env( string: <environment-variable>, string: <default> )
  • The function reads the value of an existing OS environment variable. The name has to be specified in correct uppercase/lowercase spelling.
  • If the environment variable does not exist then an error is raised and the Order fails. Alternatively an optional default value can be specified.

  • Examples:

    Expression	env( ('JS7_AGENT_CONFIG_DIR')
    JSON	"env( 'JS7_AGENT_CONFIG_DIR' )"
    Sample Value	/var/sos-berlin.com/js7/agent/var_4445/config

    Expression	env( 'JAVA_HOME', '/usr/lib/jvm/java-1.8-openjdk' )
    JSON	"env( 'JAVA_HOME', '/usr/lib/jvm/java-1.8-openjdk' )"
    Sample Value	/usr/lib/jvm/java-1.8-openjdk

    Expression	env( 'HOSTNAME', env( 'COMPUTERNAME', ' ' ) )
    JSON	"env( 'HOSTNAME', env( 'COMPUTERNAME', ' ' ) )"
    Sample Value	2021-05-03 07:30:42

    This example assumes the $HOSTNAME environment variable to be available for Agents running on Unix or the %COMPUTERNAME% environment variable to be available for Agents with Windows.
    
    
    

• now( format='yyyy-MM-dd hh:mm:ss', timezone='Europe/Berlin' )
  • The job start date. This date can be formatted using Java date qualifiers. Optionally a time zone can be specified, by default the UTC time zone is used.

  • Examples:

    Expression	now( format='yyyy-MM-dd' )
    JSON	"now( format='yyyy-MM-dd' )"
    Sample Value	2021-05-03

    Expression	now( format='yyyy-MM-dd hh:mm:ss' )
    JSON	"now( format='yyyy-MM-dd hh:mm:ss' )"
    Sample Value	2021-05-03 07:30:42

    Expression	now( format='yyyy-MM-dd hh:mm:ssZ', timezone="Europe/Berlin" )
    JSON	"now( format='yyyy-MM-dd hh:mm:ssZ', timezone=\"Europe/Berlin\" )"
    Sample Value	2021-05-03 09:30:42+02:00

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• JobResource:<JobResource>:<Variable>
  • The function returns the value of the specified <Variable> from the given <JobResource>.
  • Consider the shorthand syntax that does not use brackets

  • Examples:

    Expression	JobResource:database_uk:db_user
    JSON	"JobResource:database_uk:db_user"
    Sample Value	scott

    Expression	JobResource:database_uk:db_user orElse 'scott'
    JSON	"JobResource:database_uk:db_user orElse 'scott'"
    Sample Value	scott

    This example reads the db_user variable from the database_uk Job Resource. If the variable does not exist then the default value 'scott' is used.

• toFile( string: <Content>, string: <FileSpecification>
  • The function returns the absolute path to a temporary file that holds the value of the specified <Content> which can be a constant string or a variable of type string.
  • The file path is determined by the Agent that makes use of its JS7_AGENT_DATA/work/values directory and a temporary sub-directory.
  • The <FileSpecification>. is used to determine the file extension, for example *.xml.
  • The function can only be used with JS7 - Job Resources and JS7 - Jobs.
  • Typical use cases include a situation when longer values for job resource variables or order variables are used that would be truncated when exposed as environment variables in shell jobs. In this situation the variable's value can be written to a temporary file and the job's environment variables receives the path to the temporary file that can be processed for example with OS commands.

  • Examples:

    Expression	toFile( 'some long string value', '*.txt' )
    JSON	"toFile( 'some long string value', '*.txt' )"
    Sample Value	/home/sos/agent/var_4445/work/values/0/32.txt

Further Resources

• JS7 - Assignment of Variables
• JS7 - Job Resources

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