From 3903b622dd56abff0d45c2c616ee5cead93582ef Mon Sep 17 00:00:00 2001
From: Alex Soul <alexander.soul@computacenter.com>
Date: Mon, 25 Jan 2021 15:46:17 +0000
Subject: [PATCH] Initial Setup and deploy to Cloud Functions

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@@ -102,14 +102,100 @@ _"If you deploy into production one extra automated capability you should consid
 
 #### Bringing CI and CD (and CD) Together
 
-### Continuous Integration on Google Cloud
+|---- "CI" From "Codebase" to "Deployable Build" ----|
 
+Codebase --{Integrate i.e. "Build" (v.)}--> Build (n.) / Artifacts, Containers, compiled code --{Deliver}--> Deployable Build --{Deploy}--> Running System
+
+|---- "CD" From "Build" to "Running System" ----|
+
+
+- Continuation From "Running System":
+
+Running System --{Reflag}--> Released Feature --{Ask}--> Feedback --{Triage}--> Idea on Backlog --{Code (v.)}--> Code Change & Pull Request (PR) --{Approve}--> Return to "Codebase"
+
+Whole system has come full circle
+
+### Continuous Integration on Google Cloud
 #### GCP Continuous Integration Concepts
 
-### Cloud Source Repositories
+Challenges of Team-based Software Development
 
+- Multiple Developers working on a single code base and/or related systems:
+  - Difficult to coordinate updates between multiple developers
+  - Incompatible updates from different developers = bugs and problems
+  - Large + infrequent updates = many bugs to fix
+
+Solution: Continuous Integration!
+
+- The 'CI' of CI/CD process
+- DevOps culture of submitting smaller code changes, more often:
+  - Multiple submissions per day
+  - "Continuously" update code
+
+Benefits:
+- Smaller changes = fewer bugs to troubleshoot
+- Fast changes = rapid fedback loop
+- Rapid feedback loops = quickly resolve issues
+- Result: Improved productivity and Return On Investment(ROI)!!
+
+The CI Process - 5x Main components
+
+- Source
+- Build
+- Test
+- Report
+- Release
+
+CI Components - How to we make this work?
+
+- Single Shared code repository
+  - Single source of truth
+- Automated Build and Test tool:
+  - Key word: **AUTOMATION**
+  - Feedback loop for bugs
+- Artifact Repository
+  - Release destination for built and tested code for future development
+
+Continuous Integration Tools
+
+|           | Source Control            | Build & Test      | Artifact Storage      |
+| --------- | ------------------------- | ----------------- | --------------------- |
+| GCP       | Cloud Source Repositories | Cloud Build       | Container Registry    |
+| 3rd Party | Github, Bitbucket         | CircleCI, Jenkins | docker hub, Maven etc |
+
+
+Developer (Commits) > Source Control (Cloud Source Repositories) > {Trigger Build} > Build & Test (Cloud Build) > {Publish Build & Security Scan} > Artifact Management (Container Registry) > Release
+
+> Only manual step is the actual "Commit", everything else is automated through tooling
+
+### Cloud Source Repositories
 #### Cloud Source Repository Concepts
 
+| Fully Managed Private Git Repository | Build, test, deploy and debug code right away |
+| Native GCP Integration | Integrate with Cloud Build, Cloud Functions, Cloud Operations (formerly Stackdriver) and more |
+| Sync/mirror third party repos | One-way mirror from GitHub/Bitbucket to CSR |
+| Powerful code search | Google search for your code |
+
+Development Environments and Cross-project access
+
+- Google best practice = separate projects for each environment
+  - 'prod-project', 'dev-project', 'staging-project', etc
+- CSR hosted in single project
+  - How to access single repo from multiple projects?
+  - Solution: grant IAM roles to <u>members</u> in other projects
+
+Example: CSR in 'prod-project', accessible by 'John' in 'dev-project'
+
+- Grant IAM access to John in either host project or host repo
+  - Project level = access to all repos in project
+  - Repo level = access to individual repo
+
+IAM Roles
+- Source repository Admin/Writer/Reader
+  - Admin: Full access (add roles, create/delete repo)
+  - Writer: Edit and commit code
+  - Reader: View only
+
 #### CSR Hands On - Initial Setup and Deploy to Cloud Functions
 
 #### CSR Hands On - Mirror Github and Cross-Project Access