Automation using-phing

Automation Using
Phing
rajat_pandit@ipcmedia.com

Sunday, 20 June 2010

What is phing
• Phing Is Not Gnumake
• Its a project build tool
• Based on Apache Ant
• Cross Platform (Runs everywhere php
works)
• Lots of projects using it (Propel, Xinc,
symfony, prada)


No compiling involved,
so what does it build?
• Automation of non-development tasks
• Conﬁguring
• Packaging
• Uploading to remote servers
• Testing


More automation...
• Run unit tests for you and publish
reports

• Build API Docs
• Package and / or install PEAR
packages
• Environment Setup
• App Conﬁguration


More automation...

• setting up permissions
• environment setup
• app conﬁg
• basically anywhere you can script,
you can use phing


Other Alternatives
available
• Quite a few options available:
• ANT, Rake, NAnt
• Why Phing then?
• Dev already familiar with the language
• You can embed php straight in your build
script

• Custom extensions are easy to write
• Works across platforms, small footprint


Phing: Basics

• Task: Built in custom piece of code to
perform a speciﬁc function

• Target: Grouping of tasks to perform
a more general function

• Project: Root node of build ﬁles
containing one or more targets


Phing: Sample Build File
<project name="trustedreviews" default="main">
<property name="ver" value="1.0.1"
<property file="build.properties" />
<target name="main">
<mkdir dir="./build/${ver}">
<copy todir="./build/${veer}">
<fileset dir="." includes="*.txt" />
</copy>
</target>
</project>


Phing: Selecting a bunch
of ﬁles
• <fileset> is used to represent a
bunch of ﬁles to do stuff with

• Many tasks support <fileset>
<fileset dir="/foo"
includes="**/*.html"
excludes="**/test-*" />

<fileset dir="/bla">
<includes name="img/${theme}/*.jpg" />
<includes name="js/*.js" />
• </fileset>


Phing: Fine tuning the
selection
• You might need to fine tune your file
selection further:
• Filter on date range?
• Filter on file size
• Type (File or Directory)
• At a particular depth


Phing: Fine tuning the
selection
<fileset dir="${htdocs.dir}">
<includes name="**/*.html" />
<containsregexp expression="/prodd+.php" />
</fileset>

<fileset dir="${dist}" includes="**">
<or>
<present targetdir="${htdocs}" />
<date datetime="01/01/2010" when="before" />
</or>
</fileset>


Phing: Filesystem
Transformation

• <mapper> element adds ﬁlesystem
transformation capabilities for tasks
that support it e.g. <copy>, <move> etc
<copy todir="/tmp">
<mapper type="glob" from="*.php" to="*.php.bak" />
<fileset dir="./app" includes="**/*.php" />
• </copy>


Phing: Filesystem
Transformation
• Other kind of mappers present:
• Flatten Mapper: Gets base filename
• Regex Mapper: Changes filenames
based on regular expressions
• Merge Mapper: change all source
filenames to the same name


Phing: Data
Transformation
• <filterchain> is used to transform the
contents of the file. Supported by many tasks
like <copy>, <move> etc

• Can perform various actions:
• Strip comments from your files
• Replace values in your file
• Perform XSLT Transformations
• Above all your chain these transformations


Phing: Data
Transformation
<copy todir="${build}/htdocs">
<fileset includes="*.html" />
<filterchain>
<replaceregexp>
<regexp pattern="rn" replace="n" />
</replaceregexp>
<tidyfilter encoding="utf8">
<config name="indent" value="true" />
</tidyfilter>
</filterchain>
</copy>


Phing: Data
Transformation
• <headfilter> Reads only the first n lines of the file
• <linecontains> Filters out lines that contain a
specific word
• <linecontainsregexp> Filters out lines that
contain a specific regular expression

• <prefixlines> Adds stuff to the lines of the
selected files
• <tabtospaces> Converts tabs to spaces
(HURRAH!!)


Phing: More Data
Transformations

• <StripPHPComments> Takes out php
comments
• <replaceregexp>
• <replacetokens> This can particularly
be handy for spec ﬁles


Phing: Data
Transformations
• Consider a ﬁle that contains:
The current user is ##current_user##
• Use this build target to replace the
token
<property environment="env" />
<filterchain>
<replacetokens begintoken="##" endtoken="##">
<token key="CURRENT" value="${env.LOGNAME}" />
<replacetoken>
</filterchain>


Phing: Packaging

• Tasks like <tar> <zip> can compress
and package the set of ﬁles you want
to compress

• <pearpkg> and <pearpkg2> allows you
to build pear package using phing


Phing: Version Control
and Deployment
• <svn*> tasks provide support for subversion:
• <svncheckout>
• <svncommit>
• <svnexport>
• <svnlastrevision>
• <scp> to move ﬁles to another server
• Support for CSV also present


Phing: Support for DB
Migration
• <pdosqlexec> and <creole> provides
execution of database statements
• <dbdeploy> can take care of db
migrations
http://dbdeploy.com/documentation/getting-started/rules-for-
using-dbdeploy/

• Drupal Deployment solution anyone?


Phing: Validating Code

• <jslint> using an external utility jsl
• <xmllint> uses internal DOM support
for validating against given schema
ﬁle

• <phplint> just uses php -l
• <tidy> can be use to validate markup
and cleanup html


Phing: Php API Docs

• Support for phpDocumentor
<phpdoc title="API Documentation"
destdir="apidocs" sourcecode="no"
output="HTML:Smarty:PHP">
<fileset dir="./classes">
<include name="**/*.php" />
</fileset>
</phpdoc>


Phing: Extending
Functionalities
• Two ways to extend Phing:
• Embed PHP in the build ﬁle itself (not the cleanest
solution)

• Write your own class to provide any of the following
functioanlity:
• Task
• Type
• Selector
• Filter
• and more...


Phing: Extending
Functionality
• <phpevaltask> lets you set a property
to the results of evaluating a PHP
Expression or the results by a
function call.
<php function="crypt" returnProperty="enc_passwd">
<param value="${auth.root_passwd}"/>
</php>

<php expression="3 + 4" returnProperty="sum"/>
<php expression="echo 'test';">


Phing: Extending
Functionality

• <adhoc-task> allows you to deﬁne a
task within your build ﬁle.


Phing: Extending
Functionality
<target name="main"
description="==>test AdhocTask ">

<adhoc-task name="foo"><![CDATA[
class FooTest extends Task {
private $bar;

function setBar($bar) {
$this->bar = $bar;
}

function main() {
$this->log("In FooTest: " . $this->bar);
}
}
]]></adhoc-task>

<foo bar="B.L.I.N.G"/>
</target>


Phing: Scripting & Logic
• Phing also supports conditional tags
<if>
<equals arg1="${foo}" arg2="bar" />
<then>
<echo message="The value of property foo is
'bar'" />
</then>
</elseif>
<else>
<echo message="The value of property foo is not
'foo' or 'bar'" />
</else>
</if>


Phing: Writing a custom
task
require_once "phing/Task.php";
class MyEchoTask extends Task {
/**
* The message passed in the buildfile.
*/
private $message = null;
/**
* The setter for the attribute "message"
*/
public function setMessage($str) {
$this->message = $str;
}
/**
* The init method: Do init steps.
*/
public function init() {
// nothing to do here
}
/**
* The main entry point method.
*/
public function main() {
print($this->message);
Sunday, 20 June 2010 }

Phing: Using the
<myecho> task
<?xml version="1.0" ?>
<project name="test" basedir="." default="myecho">
<taskdef name="myecho"
classname="phing.tasks.my.MyEcho" />

<target name="test.myecho">
<myecho message="Hello World" />
</target>
</project>


What Next?
F P C I
P


Questions?


Automation using-phing

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