jscript, jtool script

A platform agent tool used to execute RedwoodScript commands from the command line. This tool uses a connection file, and operation is synchronous: the script is executed the moment it receives an execute command.

Commands are always read from standard input. If standard input is a terminal and the silent option has not been set, a prompt will be shown. If standard input is a (redirected) file, pipe or stream, no prompt is shown. If you use the -s option, the only output given will be that sent by the server. This consists of user-created output via jcsOut and jcsErr as well as errors thrown by the interpreter (which go to stderr).

Syntax

jscript  [-h|-?|-help] [-l <loglevel>] [-f <logfile>] -j|-job-context|<connfile> [-i|-interactive] [-s|-silent] [-m|-message-server]
         [-t|-timeout <seconds>] [-protect]

Argument	Description
-h, -?, -help	Show this help and exit.
-l <loglevel>	Set the logging level.
-f <logfile>	Log to file instead of stdout/stderr.
-j, -job-context	Obtain environment from job-context.
-i	Interactive, execution will not stop on successful execution of the first command.
-s	Silent, suppress prompts and feedback (but not error messages).
-t, -timeout	Timeout in seconds that jscript waits; default is set to 600 seconds (10 minutes)
<connfile>	A file containing connection details, like host, port, username, and password. Required when -job-context is not specified. You generate this file with jsecret -c.

TLS Arguments

The arguments require the -protect argument.

Argument	Environment Variable	Description
-tlsv1_3, -tls13	JCS_SSL_METHOD=tlsv1_3	Use TLS v1.3 secured connection.
-tlsv1_2, -tls12	JCS_SSL_METHOD=tlsv1_2	Use TLS v1.2 secured connection.
-tlsv1_1, -tls11	JCS_SSL_METHOD=tlsv1_1	Use TLS v1.1 or better secured connection.
-tlsv1, -tls	JCS_SSL_METHOD=tlsv1	Use TLS v1.0 or better secured connection (default).
-sslv3, -ssl	JCS_SSL_METHOD=sslv3	Use SSL v3 or better secured connection.
-cipherlist <text>	JCS_SSL_CIPHERLIST	Set list of available ciphers.
-passphrase <text>	JCS_SSL_PASSPHRASE	Set passphrase for private key.
-key <file>	JCS_SSL_KEYPATH	Set private key.
-cert <file>	JCS_SSL_CERTIFICATE_PATH	Set public certificate.
-ca <file_path>	JCS_SSL_TRUSTED_CERTIFICATE_FILE	Trusted CA certificates path or file.
-[no]verify	JCS_SSL_VERIFY_CERT	(Do not) verify peer (server or client) certificate.
-verify-names <namelist>	JCS_SSL_VERIFY_SERVER_NAMES, JCS_SSL_VERIFY_CLIENT_NAMES	Verify peer (server or client) certificate hostname against list.

Proxy Settings

The following environment variables are used to retrieve proxy server connection details:

• HTTP_PROXY - The URL to the proxy server, https://proxy.example.com:3128
• PROXY_USER - The user for the proxy server, ignored if HTTP_PROXY is not set
• PROXY_PASSWORD - The password for the proxy user, ignored if HTTP_PROXY is not set
• NO_PROXY - Enforce a direct connection

note

These environment variables override the settings in the connection file.

Setting the Return Code

The jcsShell.setReturnCode(int) method is used to set the return code of the script. You throw an exception if you want to terminate processing; the last effective call to jcsShell.setReturnCode() will set the return code.

Buit-in Commands

The following built-in commands are available in jscript:

• query - Perform an SQL query against the data model:
  • Supports formats xml, csv, and html.
  • Bind parameters are specified using the following syntax bind <position> <dataType> <value>.
• submit - Submit a process:
  • Parameters are filled using the following syntax parameter <parameter_name> <value>.
  • Optionnally, you can set a timeout and status or final, for any final state; once either is reached jscript stops waiting. Accepts the following syntaxes: wait <milliseconds_to_wait> final or wait <milliseconds_to_wait> status <status>.

Query Example

jscript> query
set format csv
bind 1 BigDecimal 5
bind 2 String '%Test%'
select count(*) from Job where JobId > ? and Description like ?

Submit Example

jscript> submit System_Sleep
parameter MilliSeconds 10000
wait 60000 final

Example

The following shows how we submit a process from a UNIX shell. In this example, the Redwood Server is named pr1.example.com, its port is 50000, and the context is /redwood. Note, that when you enter your password for the connection file, no text is displayed as you type; this improves the security of your password.

$ jsecret -c ../../net/instance/default/example.conn https://pr1.example.com:50000/redwood
Username:jdoe
Password:

$ jscript ../../net/instance/default/example.conn <<EOF
{
  JobDefinition jDefinition = jcsSession.getJobDefinitionByName("System_Info");
  Job process = jDefinition.prepare();
  jcsSession.persist();
}
/
EOF

The jscript program can also read commands from a file as follows:

$ cat script.rws
{
  JobDefinition jDefinition = jcsSession.getJobDefinitionByName("System_Info");
  Job process = jDefinition.prepare();
  jcsSession.persist();
}
/
$ jscript ../../net/instance/default/example.conn < script.rws

If you perform the same but use the terminal to supply input you will see prompts:

$ jscript../../net/instance/default/example.conn
Connected to example
jscript> {
      2>   JobDefinition jDefinition = jcsSession.getJobDefinitionByName("System_Info");
      3>   Job process = jDefinition.prepare();
      4>   jcsSession.persist();
      5> }
      6> /
Result: OK
$

See Also

• Command Line System Tools