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Services, tools &practices for a software houseor...how to make your development team effective and happy Paris Apostolopoulos
About me ...● Met Java back in 1999..fell in love!Java career started 2001 (intern)● 2003 co-founding JHUG / Administrator● Focus on J2EE and BPM-N (lately)● I enjoy team work, envy developers, dislike incompetent management :P● I love effective procedures and keeping things in order!● @javapapo (twitter)● javapapo.blogspot.com (blog)● www.linkedin.com/in/javaneze● email@example.com
Agenda● Why?● Lets talk about us - the developers● The software development house ○ Code repository versioning system ○ Issue / Bug Tracker ○ Wiki / Knowledge base ○ Build Server / Continuous Integration ○ Testing ○ Code Quality ○ Training developers● Other important things ○ Project structure and build tools ○ The issue of security
Why? ..2● Why companies still ignore basic tools and practises of moden software development methodologies?● Is it rocket science or difficult to implement? ○ I dont think so...● Why developers do not push things towards improvement? (lazy?dissapointed?)● Why developers get used of an inefficient software development cycle? They embrace it at the end of the day.
Why? ..3● Dont we have enough books about modern software development?● Is it software developers the case or IT managers? Is there a disconnect?● We want faster, safer, robust and flexible software but..do we really work towards this goal?● Who to blame? Do we need to blame anyone?
Do we fit into this category?"One category of profession isdriven by the mediocre, theaverage, and the middle-of-the-road. In it, the mediocre iscollectively consequential."Nassim Nicholas Taleb, The BlackSwan
What I really want from you today● It is not only about a listing several tools and techniques, that I am sure many of you know.● It is not about blaming managers, developers or anyone else.● Ask yourself, I am really working in the most effective and proper way?● Can I introduce change? Have I tried?● Do I want to change? Use proper tools, become more effective?● Is there any check list of things? (yes follow up)
Code repository / VersioningSystem● Do you have one? ....(hope so)● Select the appropriate type depending on your needs ○ VSS, CVS, SVN, Git, Merculiar● $$ - Some of them are completely free!● Its 2011, do we still need to talk about why we need one??
Code repository / VersioningSystem● Do you Back up? ○ A code repository with no proper backup is just like a skydiver with no back up parachute! #fact● Consider remote access?● Have you invested enough time to learn about your versioning system? ○ no matter if you have the most advanced tool if you dont how to proplery use it you will not make much out of it. #fact
Issue / Bug Tracker● How dissapointing ...not to have one.● People still use their heads, emails or their log books to note, remember and handle issues. ○ A tracker does it better! #fact● How many times you have heard the following.. ○ Send me an email about that
Issue / Bug Tracker● Which one? ($) ○ Many choices, free and commercial ○ JIRA, Trac, Bugzzilla,YouTrack, Redmine etc.● Back up ○ Yes, you need to have a proper back up too.● Invest some time or even force your people to use it - there great managerial advantages over that!● Try to reduce the amount of project related information floating through emails!
Issue / Bug Tracker● Developers & Managers get a system where they can track the past ,monitor the present and plan effectively for the future.● Metrics regarding work allocation and performance can be derived.● Increase flexibility and dynamics of the development team to address sudden changes or problems.● Learn from your...tracked mistakes ;) #fact● We usually forget issues resolved a week ago. #fact
Wiki - Knowledge Base● We assume that there is some sort of analysis + documentation about your software (?)..is it? ○ Saying we are agile and we dont waste our time with such stuff IS NOT cool! #fact● Where do you store, develop and maintain this information?● Unfortunately many companies/teams still use emails/ oral communication or Word documents.● We live in the internet + collaboration era - wake up!!
Wiki - Knowledge Base● There are many free or paid products or event services plain wiki installations, MediaWiki, Confluence● Make them available and open to your team.● Dont reside on closed standards or systems.● Keep it simple.● Try to capture all related documentation and information regarding a project.● Inter connect your Issue Tracker with your wiki● Remote access : )
Wiki - Knowledge Base● + You dont need so many licenses for word editing software.● You can still share information with outsiders.● You can bring in your customers to their specific island on your knowledge base.● Try to apply it on a company level- not only on software development teams.
Build Server - ContinuousIntegration geeks Code Repository Watch/Pull/Monitor Customers Code Release Build. Provide Identify Build Updates Builder Errors Server Test Run Tests
Build Server - ContinuousIntegrationIn essense, Continuous Integration is about reducingrisk, providing faster feedback.It is designed to helpidentify and fix integration and regression issues faster,resulting in smoother, quicker delivery and fewer bugs.Jenkins,The Definite Guide,Chapter 1J.Ferguson Smart,Oreilly
Build Server - ContinuousIntegration● Potential solutions ○ Hudson/Jenkins,CruiseControl,Contunuum, ○ TeamCity, Bamboo● Eventually a build server does things behind the curtains - you just have to make sure it works and configure it properly.● It is the real implementation of Cont.Integration as a practise.● Beware of hardware requirements.● Potential services in the cloud-internet.
Testing..unit testing● There are many types of testing, unit, functional, cross cutting, integration.● We will focus on unit tests.● It is not the holy grail. A pragmatic approach.● We cant ignore it!● For the managers: Learn to properly add testing on project estimates.● For Developers: We get lazy sometimes, lets face it.
Code Quality● Another sad story... (#fail)● It is still considered as a nice to have/ nice to check practise by many managers and even developers.● There are tools that can help you tackle time, effort and estimate problems in order to monitor and preserve the quality of the code.● Tools that scan your code base and identify many basic or advanced problems, sometimes perfomance problems or potential concurrency bugs.
Code Quality..for Java Developers● FindBugs● PMD● CheckStyle● JDepend● Sonar● Prevent● EclEmmaMost of them can be easily integrated to your IDE. It isjust a click away!
Training● Training should be encouraged in an personal level + promoted company wise.● Skills need to be updated.● Companies need to leverage the benefits of training their development teams¨ ○ Internal ○ Conferences ○ Support local communities
Training● Introduce a company library ○ Buy at least one or two books every month and add them to the library. ○ Encourage people to read.● Engage developers internally with coding sessions and presentations.● Give space to those that are willing to experiment with something new, let them bring back their experience.● Promote the do-ers.● Teach young developers...the power of the force ;)
Project structure / Building tools● Please stop - creating and building projects using your IDE as a building tool!● You introduce a technical dependency - increase maintenance effort and your build system may be become obsolete at any time.
Project structure / Building tools● Java developers are lucky enough to have a variety of tools that handle buidling, structure and library dependencies.● We have some sort of standards● The main goals for your project must be ○ to be complete IDE un-aware ○ can be built in any platform easily ○ building activitity to be easily maintained or changed● Keep it simple
Project structure / Building tools● Tools and frameworks to consider ○ Apache Ant ○ Apache Maven ○ Apache Ivy ○ Gradle ○ Gant ○ Buildr
Project structure / Building tools● Java developers are lucky enough to have a variety of tools that handle build, structure and library dependencies.● We have some sort of standards.● The main goals for your project must be ○ to be complete IDE un-aware ○ can be built in any platform easily ○ building activitity to be easily maintained or changed● Keep it simple
Secure...coding● Unfortunately it is one of our lowest priorities.● It is obvious, since security threats appear in all sorts of software- all the time.We still suffer from them.● We need to embrace the principles of security in our architecture and actual software development activity.
Secure...coding● OWASP (owasp.org) ○ free and open application security community● Think and introduce security requirements for your project - before implementation.● Resources for Security testing ○ OWASP Top 10 Wev Application Security Issues ○ OWASP Testing Guide v3.v4
Secure...coding● Tools (static) ○ Peer review: Check each others code. ○ Static Code Analysis (http://en.wikipedia. ) org/wiki/List_of_tools_for_static_code_analysis ○ Commercial Static code analysis ■ IBM (Ounce Labs) ■ HP (Fortify) - in the cloud as well ■ Veracode
References● This talk was based on the following posts ○ Part 1:http://javapapo.blogspot.com/2011/06/services-practises-and-tools-that.html ○ Part 2:http://javapapo.blogspot.com/2011/06/services-practices-and-tools-that.html ○ Part 3:http://javapapo.blogspot.com/2011/06/services-practices-and-tools-that_27.html ○ Part 4:http://javapapo.blogspot.com/2011/06/services-practises-and-tools-that_27.htm
References - books● Jenkins, The Definite Guide, J.Ferguson Smart, Oreilly● Agile ALM, Leighweight tools, Agile strategies, M.Huttermann, Manning● Git (Communit Book) -book.git-scm.com● Version Control with Subversion, svnbook.red-bean.com● Continuous Integration,Improving software quality and reducing risk, Martin Fowler.● Ant in Action, Manning● Maven the Complete reference, ○ http://www.sonatype.com/books/mvnref-book/reference/● JUnit in Action, Manning● Maven -the definite guide, Oreilly