agile oracle bi development - · pdf fileagile oracle bi development for multiple users with...
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Agile Oracle BI Development for Multiple Users with Git
Yes, it can be done
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Harvard UniversityFounded 163620,000 active students7,500 degrees awarded/year2,475 faculty 18,000 total employees
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Eric Brown
Eric is a Senior Business Intelligence Engineer on Harvard University's new Student Information Systems/BI Apps implementation.
In addition to ETL development and day-to-day administrative tasks, he in charge of the development lifecycle and release process for all OBIEE and ETL work.
He's been with Harvard since 2014 and holds a degree from Dartmouth College in pure mathematics.
His favorite food is pizza.
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• Where We Were• Where We Wanted to Be• How We Got There: Overview• The Process in Action• How We Got There: Detail• Where We Are Going from Here
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Agenda
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OBIEE Development DomainsCatalog RPD
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Where We Were
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• Single DEV environment
• Concurrent online development by many developers
• Catalog development straightforward but...
Where We Were
Developer 2
Developer 5 Developer 4
DEVDeveloper 6
Developer 1Developer 3
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• Single DEV environment
• Concurrent online development by many developers
• Catalog development straightforward but...
• Difficult to coordinate RPD work
Where We Were
Developer 2
Developer 5 Developer 4
DEVDeveloper 6
Developer 1Developer 3
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• Single DEV environment
• Concurrent online development by many developers
• Catalog development straightforward but...
• Difficult to coordinate RPD work
• Disappearing development
Where We Were
Developer 2
Developer 5 Developer 4
DEVDeveloper 6
Developer 1Developer 3
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• Single DEV environment
• Concurrent online development by many developers
• Catalog development straightforward but...
• Difficult to coordinate RPD work
• Disappearing development
• Fear of trying new things
Where We Were
Developer 2
Developer 5 Developer 4
DEVDeveloper 6
Developer 1Developer 3
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• Single DEV environment
• Concurrent online development by many developers
• Catalog development straightforward but...
• Difficult to coordinate RPD work
• Disappearing development
• Fear of trying new things
• Impossible to audit changes
Where We Were
Developer 2
Developer 5 Developer 4
DEVDeveloper 6
Developer 1Developer 3
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• Single DEV environment
• Concurrent online development by many developers
• Catalog development straightforward but...
• Difficult to coordinate RPD work
• Disappearing development
• Fear of trying new things
• Impossible to audit changes
• Merging with the Admin tool is a nightmare
Where We Were
Developer 2
Developer 5 Developer 4
DEVDeveloper 6
Developer 1Developer 3
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• Single DEV environment
• Concurrent online development by many developers
• Catalog development straightforward but...
• Difficult to coordinate RPD work
• Disappearing development
• Fear of trying new things
• Impossible to audit changes
• Merging with the Admin tool is a nightmare
• Un-Agile—promoting changes is all-or-nothing
Where We Were
Developer 2
Developer 5 Developer 4
DEVDeveloper 6
Developer 1Developer 3
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Where We Were
This… …is *not* source control.
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Where We Wanted to Be
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Where We Wanted to Be
S• Simple
• The development process must not get in the way of development
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Where We Wanted to Be
SA• Simple
• The development process must not get in the way of development• Agile
• We’re an Agile shop
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Where We Wanted to Be
SAS• Simple
• The development process must not get in the way of development• Agile
• We’re an Agile shop • Safe
• Developers must feel safe to experiment
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Where We Wanted to Be
SAS• Simple
• The development process must not get in the way of development• Agile
• We’re an Agile shop • Safe
• Developers must feel safe to experiment• Development must be safe, i.e. it doesn’t mystically disappear
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Where We Wanted to Be
SASA• Simple
• The development process must not get in the way of development• Agile
• We’re an Agile shop • Safe
• Developers must feel safe to experiment• Development must be safe, i.e. it doesn’t mystically disappear
• Auditable• Must be able to track who, what, when & why for each change
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How We Got There: Overview
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I’ve got two two words for you:
Version Control Sand Boxes
How We Got There: Overview
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About Version Control• “Version control is a system that records changes to a file or set of
files over time so that you can recall specific versions later.”* • Works well for text files; not so well for binariesAbout Git• Git is a version control system created by Linus Torvalds to maintain
the Linux kernel• It has many fans• Why Git? lmgtfy.com/?q=why+git• Vocabulary:
• branch – a version, or line of development• commit – a save point along a branch• merge – to bring two or more branches together
How We Got There: Overview
*from Pro Git by Scott Chacon and Ben Straub
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Branching and Merging in a Nutshell
How We Got There: Overview
1.0
master
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Branching and Merging in a Nutshell
How We Got There: Overview
1.0 1.1
master
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Branching and Merging in a Nutshell
How We Got There: Overview
1.0 1.1 1.2 1.3
master
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Branching and Merging in a Nutshell
How We Got There: Overview
58bbb6 a41b82 a51e56 f52ea7
master
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Branching and Merging in a Nutshell
How We Got There: Overview
58bbb6
master
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Branching and Merging in a Nutshell
How We Got There: Overview
58bbb6
8416d1master
jira123
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Branching and Merging in a Nutshell
How We Got There: Overview
58bbb6
8416d1master
jira123
27decc
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How We Got There: Overview
58bbb6
8416d1
27decc
354e84
8b710b
a03e27 327db3
master
Branching and Merging in a Nutshell
jira123
jira345
jira456
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Ok so how do we apply this to OBIEE?
How We Got There: Overview
?
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• Fortunately, the catalog consists primarily of text files so we can essentially just go ahead and put the catalog, or a least parts of the catalog, in Git
How We Got There: Overview
• Unfortunately, the RPD doesn’t, so it has to be converted to XML first
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Now that we’ve got that figured out…
Lets talk Sandboxes
Many of the pain points we had were due to concurrent online development by multiple developers, or CODBMD
To resolve them each developer must have her own play space
How We Got There: Overview
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How We Got There: OverviewSandbox Rig
SBX1 SBX2 SBX3 SBX4
DEV1 DEV2 DEV3 DEV4 DEV5 DEV6
• Each SBXn is a distinct OBIEE instance • All SBX point to a shared data warehouse• Each DEVn is a developer’s Git repository with RPD and Catalog• A developer can deploy to any SBX
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The Process in Action
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The Development Process in ActionDevelopment Lifecycle
1. Develop
2. Peer Review
3. Merge to master
4. PO/Manager Review
5. Release to Test
6. Release to Prod
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The Development Process in ActionDevelopment Lifecycle
1. Develop
2. Peer Review
3. Merge to master
4. PO/Manager Review
5. Release to Test
6. Release to Prod
1. Log in to server
2. Checkout or create branch
3. Deploy
4. Develop
5. Pre-commit
6. Commit
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The Development Process in ActionDevelopment Process Steps
1. Log in to server
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The Development Process in ActionDevelopment Process Steps
2. Checkout or create branch
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The Development Process in ActionDevelopment Process Steps
3. Deploy
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The Development Process in ActionDevelopment Process Steps
4. Develop
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The Development Process in ActionDevelopment Process Steps
5. Pre-commit
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The Development Process in ActionDevelopment Process Steps
6. Commit
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The Development Process in ActionIn Short:
1. Login, branch, deploy
2. Develop
3. Pre-commit, commit
#FTW
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The Development Process in ActionLet’s do a practical example together.
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The Development Process in ActionDevelopment Lifecycle
1. Develop
2. Peer Review
3. Merge to master
4. PO/Manager Review
5. Release to Test
6. Release to Prod
1. Log in to server
2. Checkout or create branch
3. Deploy
4. Develop
5. Pre-commit
6. Commit
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The Development Process in ActionDevelopment Lifecycle
1. Develop
2. Peer Review
3. Merge to master
4. PO/Manager Review
5. Release to Test
6. Release to Prod
1. Log in to server
2. Checkout branch
3. Deploy
4. Review
5. Approve/reject in Jira
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The Development Process in ActionDevelopment Lifecycle
1. Develop
2. Peer Review
3. Merge to master
4. PO/Manager Review
5. Release to Test
6. Release to Prod
1. Log in to server
2. git merge
3. git push
#FTW
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The Development Process in ActionDevelopment Lifecycle
1. Develop
2. Peer Review
3. Merge to master
4. PO/Manager Review
5. Release to Test
6. Release to Prod
1. Log in to OBIEE Dev
2. Review
3. Approve/reject in Jira
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The Development Process in ActionDevelopment Lifecycle
1. Develop
2. Peer Review
3. Merge to master
4. PO/Manager Review
5. Release to Test
6. Release to Prod
1. Log in to server
2. git pull
3. Deploy
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The Development Process in ActionDevelopment Lifecycle
1. Develop
2. Peer Review
3. Merge to master
4. PO/Manager Review
5. Release to Test
6. Release to Prod
1. Log in to server
2. git pull
3. Deploy
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The Development Process in ActionIs it Agile?
• Development is incremental• Facilitates code review/feedback • Branches organize development
with Jira stories• Release is a non-event
Hi, I’m Jira
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The Development Process in ActionIs it Auditable?Yes, absolutely.
Every single change to the code base is tagged with date, developer, ticket number, comment. Every single change can be inspected.
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How We Got There: Detail
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How We Got There: DetailThe magic is in the scripts• deploy• precommit
…and in a bit of configuration.
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How We Got There: DetailConfiguration neededSteps:1. Copy three catalog directories Git repo
root/sharedroot/system/metadataroot/system/privs
2. Replace these directories in MW Home with links to Git3. Set environment variables (e.g. path to Git repo)
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How We Got There: Detaildeploy
Steps:1. Convert XML to RPD using biserverxmlexec2. Point catalog links to my Git repo*3. Deploy the RPD using WLST
*only needed on sandbox
precommitSteps:1. Convert RPD to XML using biserverxmlgen2. Update catalog file permissions and ownership*3. Add changes to Git staging area
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How We Got There: DetailOK, yes there’s a bit more1. Git2. Utilities: ogstatus, clearreorders, rxq, …3. MY_LOGO4. ODI…5. Release process
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Where We Are Going from Here
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Where We Are Going from HereBetter utilities to examine diffsBitbucketPort to Windows (maybe)Automate environment configuration
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Questions
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