Maarten Smeets, 06-12-2015

WebLogic Scripting Tool made Cool!

Introduction

• About AMIS– Located in the Netherlands– Oracle Award winning partner

• Maarten Smeets– Senior Oracle Integration Consultant– Experience with Oracle SOA Suite since 2007– Well certified (SOA, BPM, Java, SQL,

PL/SQL among others)– Author of 100+ blog articles (http://javaoraclesoa.blogspot.com)– Working @ AMIS since 2014

@MaartenSmeetsNL

https://nl.linkedin.com/in/smeetsm

Agenda

• Introduction

• Using Java within WLST

• Using WLST as Jython module

• A look into the future

• Summary

Agenda

• Introduction

• Using Java within WLST

• Using WLST as Jython module

• A look into the future

• Summary

IntroductionWebLogic Scripting Tool

http://www.oracle.com/technetwork/middleware/weblogic/overview/weblogic-server-12-1-3-datasheet-2227036.pdf

IntroductionBased on popular languages

• WLST is based on Jython. Jython is an implementation of the Python language for the Java platform

Python ranks as 5th most popular programming

languageJava ranks as most popular programming language

TIOBE index 2015

Introduction3 interaction modes

Interactive

WLST

Script Embedded

IntroductionMbean trees

• domainConfig– configuration hierarchy of the entire domain; represents the configuration MBeans in

RuntimeMBeanServer– read only

• serverConfig– configuration hierarchy (configuration MBeans) of the server your are connected to– read only

• domainRuntime– hierarchy of runtime MBeans for the entire domain– read only

• serverRuntime– hierarchy of runtime MBeans for the server you are connected to– read only

• edit– writable domain configuration with pending changes; represents the configuration MBeans in the

EditMBeanServer• jndi

– read-only JNDI tree for the server you are connected to• custom

– list of custom MBeans– can be hierarchical/grouped if MBeans use namespaces appropriately

http://www.slideshare.net/jambay/weblogic-scripting-tool-overview

9

IntroductionWhat can you do with WLST?

Configuration DeploymentManagement Monitoring

IntroductionWLST Configuration

http://stackoverflow.com/questions/18105396/wlst-command-to-update-jdbc-datasource-url

IntroductionWLST Management

http://wlstbyexamples.blogspot.nl/2009/10/dynamic-domain-creation-with-wlst.html#.VmGRnnYvdD8

IntroductionWLST Deployment

IntroductionWLST Monitoring

http://wlstbyexamples.blogspot.nl/2010/02/server-state-using-wlst.html#.VmGYinYvdD8

Agenda

• Introduction

• Using Java within WLST

• Using WLST as Jython module

• A look into the future

• Summary

Using Java within WLSTWhy?

• Extend WLST with Java API’s– Unleash the power of Java API’s on your WLST scripts!

• Rewrite Java as WLST– WLST can easily be executed by operations on an application server

Using Java with WLSTSome differences

Import ArrayMethodInstance

Using Java with WLSTImports

Java WLST

import java.util.Hashtable; from java.util import Hashtable

Using Java with WLSTCreating instances

Java WLST

Hashtable jndiProps = new Hashtable(); jndiProps = Hashtable()

Types are determined by inference

Using Java with WLSTMethods

Java WLST

private String getDNToUndeploy(CompositeData[] compositeData) throws Exception

def getDNToUndeploy(compositeData):

Python has no true private methodsExceptions are determined by inference

Using Java with WLSTArrays

Java WLST

int[] intArray = { 1, 2, 3}; from jarray import array intArray = array ([1, 2, 3],’i’)

Java primitives arrays can be created in Jython with the jarray module

Using Java with WLSTExample: Java

http://javaoraclesoa.blogspot.co.uk/2015/05/unleash-power-of-java-apis-on-your-wlst.html

Using Java with WLSTExample: WLST

Agenda

• Introduction

• Using Java with WLST

• Using WLST as Jython module

• A look into the future

• Summary

Using WLST as Jython moduleWhy?

• WLST uses Jython 2.2.1 (2007)

• Current version of Jython is 2.7 (2015)

• Jython 2.7 has many nice things, for example;– Package management: pip install logging– XML API’s: ElementTree– Easy multithreading: multiprocessing– Easy argument parsing: argparse

Using WLST as Jython moduleArgument parsing in WLST

import getopturl = Noneuser = Nonepassword = None

opts, args = getopt.getopt(sys.argv[1:], "e:u:p:")for opt, arg in opts: print opt, arg if opt in "-e": env = arg if opt in "-p": password = arg if opt in "-u": user = arg

print "URL: "+urlprint "Username: "+usernameprint "Password: "+password

import sys;print "URL: "+sys.argv[1]print "Username: "+sys.argv[2]print "Password: "+sys.argv[3]

Manual argument checking and processing!

Using WLST as Jython moduleArgument parsing in Jython 2.7

import argparseparser = argparse.ArgumentParser()parser.add_argument("username", type=string, help="username")parser.add_argument("password", type=string, help="password")parser.add_argument("url", type=string, help="url")args = parser.parse_args()

print "URL: "+args.urlprint "Username: "+args.usernameprint "Password: "+args.password

Type checkingOptional/required argumentsHelp generationMinimal coding

Using WLST as Jython moduleModule installation

WLST (Jython 2.2.1) Jython 2.7Find and download aJython 2.2.1 compatible module

Copy the module to WL_HOME/common/wlst/modules

pip install <module name>

Using WLST as Jython moduleHow?

• You need the classpath

• You need the Jython module path

• You need a WLST Jython module

Using WLST as Jython moduleHow?

• You need the classpath

• You need the Jython module path

• You need a WLST Jython module

Using WLST as Jython moduleClasspath

• Start wlst.sh / wlst.cmd– import os– print os.environ[‘CLASSPATH’]

• Add the wlfullclient.jar and <WLS_HOME>/oracle_common/modules/* 

• Done

Using WLST as Jython moduleHow?

• You need the classpath

• You need the Jython module path

• You need a WLST Jython module

Using WLST as Jython moduleJython module path

• Start wlst.sh or wlst.cmd– print sys.path

• Done

Using WLST as Jython moduleHow?

• You need the classpath

• You need the Jython module path

• You need a WLST Jython module

Using WLST as Jython module

• Start wlst.sh or wlst.cmd– writeIniFile("wl.py") 

• Replace ‘origPrompt = sys.ps1’ with ‘origPrompt = ">>>“’

• Done

Using WLST as Jython module

• Create a startjython.sh script to set the CLASSPATH and JYTHONPATH

• Ready to roll!

import wl wl.connect("weblogic","Welcome01", "t3://localhost:7101") mbServers= wl.getMBean("Servers") servers= mbServers.getServers() for server in servers : print( "Server Name: " + server.getName() ) print( "Done." )

Agenda

• Introduction

• Using Java with WLST

• Using WLST as Jython module

• A look into the future

• Summary

A look into the futureCloud Application Foundation

A look into the futureNew WLST features in 12c

• WLST 12c introduces Jline integration – use up and down arrows to browse command history

• WebLogic Server 12c provides a Maven plugin to allow execution of WLST scripts in for example Continuous Delivery pipelines– https://docs.oracle.com/cd/E24329_01/web.1211/e24368/maven.htm#WLPRG700

• SOA Suite 12.2.1 instance patching only supported with WLST (not Ant or Maven)

• WLST 12.2.1 offline mode does not support partitions (yet?) . WLST 12.2.1 online does support partitions (multitenancy)

A look into the futureHowever…

• wlfullclient.jar is deprecated since 12.2.1 (related to multitenancy?)– http://docs.oracle.com/middleware/1221/wls/NOTES/whatsnew.htm#NOTES155

• RESTful Management Services replacing WLST in the cloud?– http://docs.oracle.com/middleware/1221/wls/NOTES/whatsnew.htm#NOTES353

• WLST has not seen a new Jython version since 11g

Agenda

• Introduction

• Using Java with WLST

• Using WLST as Jython module

• A look into the future

• Summary

Summary

• WebLogic Scripting Tool is based on popular programming languages

• WebLogic Scripting Tool has many uses

• WebLogic Scripting Tool is very flexible– can be extended with Java API’s– can be used as Jython module

• WebLogic Server is changing because of Oracle Cloud requirements

Questions

@MaartenSmeetsNL

https://nl.linkedin.com/in/smeetsm Download the presentation at http://bit.ly/1jH5ywP