DevOps in

Flutter Development 

Majid Hajian

mhadaily

 Beautiful

Fast

Open

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Productive

 Beautiful

Fast

Open

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Zapp.run

Continuous Planning and Integration

Continuous Testing and Monitoring

Continuous Delivery and Deployment

mhadaily

What we will learn today

Branching Flow

1

CD/CI

1

Deployment Flow

1

job Automation

1

mhadaily

ME.dart

import 'package:flutter/material.dart';
MaterialApp(
   ThemeData(
        name: "Majid Hajian",
        location: "Oslo, Norway",
        description: '''
                Google Developer Expert
        	Passionate Software engineer, 
	        Community Leader, Author and international Speaker
         ''',
        main: "Head of DevRel at Invertase.io",
        homepage: "https://www.majidhajian.com",
        socials: {
          twitter: "https://www.twitter.com/mhadaily",
          github: "https://www.github.com/mhadaily"
        },
        author: {
          Pluralsight: "www.pluralsight.com/authors/majid-hajian",
          Apress: "Progressive Web App with Angular, Book",
          PacktPub: "PWA development",
          Udemy: "PWA development",
        }
        founder: "Softiware As (www.Softiware.com)"
        devDependencies: {
          tea: "Ginger", 
          mac: "10.14+",
        },
        community: {
          MobileEraConference: "Orginizer",
          FlutterVikings: "Orginizer", 
          FlutterDartOslo: "Orginizer",
          GDGOslo: "Co-Orginizer",
          DevFestNorway: "Orginizer",
          ...more
        }));

mhadaily

Find me on the internet by

Head of DevRel at Invertase

From Code to User

The Flow

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Company Testers 

Internal Testers 

External Testers / Beta 

Production

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Git Flow

Scrum

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mhadaily

Company Testers 

Internal Testers 

External Testers / Beta 

Production

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if [[ "$FH_BRANCH" == "master" ]]; then
  export DEPLOYMENT_LANE="production" 
  
elif [[ "$FH_BRANCH" == "develop" ]]; then
  export DEPLOYMENT_LANE="internal"
  
elif [[ "$FH_BRANCH" =~ ^release\/.*$ ]]; then
  export DEPLOYMENT_LANE="beta"
  
else
  export DEPLOYMENT_LANE="feature"
fi

Production

Beta

Production

Alpha

Internal

Production

App Store

TestFlight

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Production

Beta

Production

Alpha

Internal

App Store

TestFlight

End Users

Internal Testers

Beta Testers

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Code Quality

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void main(List<String> arguments) {
  analyze.main();
  format.main();
  test.main();
}

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void main(List<String> arguments) {
  analyze.main();
  format.main();
  test.main();
}
void main() {
  stdout.write('Start Analyzing...\n');
  final ProcessResult result = Process.runSync(
    'flutter',
    <String>['analyze', '--no-pub'],
    runInShell: true,
  );
  checkResult(result);
}

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Git Hooks

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#!/bin/bash
# Created For Majid's App 
if [ ! -f /Users/majid/Projects/app/scripts/git_hooks/pre_commit.dart ]; then
    # Dart script not found, skipping hook"
    exit 0
fi
echo "> Running pre_commit hook..."
DART_EXIT_CODE=0
dart /Users/majid/Projects/app/scripts/git_hooks/pre_commit.dart "$@"
DART_EXIT_CODE=$?
if [[ ${DART_EXIT_CODE} -ne 0 ]]; then
  echo ""
  echo "> Error detected in pre_commit hook."
        exit 1
fi
> cat .git/hooks/pre-commit

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void main(List<String> arguments) {
  analyze.main();
  format.main();
  test.main();
}

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CI / CD

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Why Should we start doing this?

 

1- Improve speed to market and our internal testers

2-  Ensure quality

3- Deploying is seamless

4- improves disaster recovery 

5- improve business agility

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mhadaily

  1. Capture screenshots automatically
  2. Distribute beta builds
  3. publish your app with the push of a button
  4. automate code signing for iOS
  5. Handle your build by code (code as infrastructure)  
  6. Open source / Written in Ruby / Gem
  7. Handle push notificaiton certificates out of the box

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fastlane is an open source platform aimed at simplifying Android and iOS deployment.
fastlane lets you automate every aspect of your development and release workflow.

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.
├── Appfile
├── Deliverfile
├── Fastfile
├── Matchfile
├── Pluginfile
├── android
│   ├── icons
│   ├── metadata
│   └── screenshots
├── devices.txt
├── ios
│   ├── metadata
│   ├── push_certificates
│   └── screenshots
└── report.xml
.
├── CHANGELOG.md
├── Gemfile
├── Gemfile.lock
├── README.md
├── analysis_options.yaml
├── android
├── assets
├── build
├── build.yaml
├── dartdoc_options.yaml
├── docs
├── fastlane
├── gen
├── github_action.sh
├── ios
├── lib
├── local_packages
├── pubspec.lock
├── pubspec.yaml
├── res
├── scripts
├── setup.dart
├── test
├── travis_before_script.sh
├── travis_script.sh
└── web

mhadaily

require 'aws-sdk'
app_name = "ENV["APP_NAME"]" #{app_name}
username = "ENV["USERNAME"]" #{username} // Apple ID
slack_url = ENV["SLACK_DEPLOY_WEBHOOK"]
raw_version = Psych.load_file('../pubspec.yaml')['version']
# Only major, minor, patch digits and dots.
version_number = /\d+\.\d+\.\d+/.match(raw_version)[0]
build_number = 1
codesigning_identity = "ENV["CODESIGNING_IDENTITY"]"
app_identifier = CredentialsManager::AppfileConfig.try_fetch_value(:app_identifier)
package_name = CredentialsManager::AppfileConfig.try_fetch_value(:package_name)
export_team_id = CredentialsManager::AppfileConfig.try_fetch_value(:team_id)
changelog = ''
emojified_changelog = ''
# Prevent Fastlane from overwriting README.md
skip_docs
# xcversion(version: "11.2.1")
# Get an Amazon S3 resource
if (ENV["AWS_ACCESS_KEY_ID"])
  s3 = Aws::S3::Resource.new(region: 'eu-central-1')
# Get the bucket by name
  push_certificate_bucket = s3.bucket('papp-app-push-notification-certificates')
end
default_platform(:ios)

Fastfile

platform :android do

# your lanes for Android here 

end


platform :ios do

# your lanes for iOS here 

end

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Fastfile

platform :android do

  desc "Build and release to beta"
  lane :beta_internal_release do
    prepare(release: false)
    setup_new_changelog
    release_to_store(track: 'internal')
  end
  
end

mhadaily

platform :ios do

  desc "Push a new release to TestFlight"
  lane :build_and_deploy_testflight do |options|
    puts "Build and Deploy TestFlight started..."
    prepare(environment: options[:environment])
    setup_new_changelog
    upload_to_testflight(
        skip_waiting_for_build_processing: true,
        ipa: "Runner.ipa",
        username: username,
    #changelog: changelog, # it's possible to 
    #add AppInfo, BuildInfo and more, also localize it.
    )
    slack(
        message: "#{version_number}+#{build_number}: iOS beta released to 
        TestFlight #{options[:channel]} \n Changelog: \n #{emojified_changelog}",
        slack_url: slack_url,
    )
    # git_actions(release: false)
  end
end

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platform :ios do

  desc "Prepare and archive app"
  lane :prepare do |options|
    puts "Building and deploying version #{version_number}, current build #{latest_testflight_build_number}"
    if (ENV["AWS_ACCESS_KEY_ID"])
      push_notification_certificates
    end
    handle_versioning
    flutter_build_no_sign
    generate_icons
    beta_badge(hide: options[:release])
    code_signing
    build_ios_app(
        workspace: workspace_path,
        configuration: "Release",
        scheme: "Runner",
        export_team_id: export_team_id,
        export_method: "app-store",
        # Verify that the right signing identity is used for publishing.
        codesigning_identity: codesigning_identity,
        xcargs: "DEVELOPMENT_TEAM='#{export_team_id}'"
    )
  end
end

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Share one code signing identity across your development team to simplify your codesigning setup and prevent code signing issues.

 

codesigning.guide

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match

🔄 Automatically sync your iOS keys and profiles across all your team members using git
📦 Handle all the heavy lifting of creating and storing your certificates and profiles
💻 Setup codesigning on a new machine in under a minute
🎯 Designed to work with apps with multiple targets and bundle identifiers
🔒 You have full control over your files and Git repo, no third party service involved
Provisioning profile will always match the correct certificate
💥 Easily reset your existing profiles and certificates if your current account has expired or invalid profiles
♻️ Automatically renew your provisioning profiles to include all your devices using the --force option
👥 Support for multiple Apple accounts and multiple teams
Tightly integrated with fastlane to work seamlessly with gym and other build tools

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#Matchfile

git_url(ENV['REPO'])
storage_mode("git")
type("appstore") # The default type, can be: appstore, adhoc, enterprise or development
app_identifier(["com.your.app"])
username(ENV['USERNAME']) # Your Apple Developer Portal username

Google Cloud Storage

or

Github

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platform :ios do
  desc "Sing code using Match and fastlane"
  lane :code_signing do
    # Stop fastlane from echoing back ENV var.
    # Doesn't matter too much since Travis doesn't echo back encrypted variables
    # anyway :D
    suppress_output {
      # Retrieves all the necessary certs and provisioning profiles.
      # match   # alias for "sync_code_signing"
      sync_code_signing(readonly: true)
    }
    puts 'Certificates and profiles installed'
    # Modify the Xcode project to use the new team and profile.
    # It will put the git state to dirty but Travis will be wiped after
    # then run session.
    disable_automatic_code_signing
    update_project_provisioning(
        build_configuration: 'Release',
        profile: ENV["sigh_#{app_identifier}_appstore_profile-path"]
    )
  end
end

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platform :ios do
  desc "Handle version and build number"
  lane :handle_versioning do
    build_number = latest_testflight_build_number + 1
    puts "new build number now is 
    #{build_number} and build 
    version is #{version_number}"
  end
end

platform :android do
  desc "Handle version and build number"
  lane :handle_versioning do
    internal_number = google_play_track_version_codes(track: 'internal')[0].to_i
    beta_number = google_play_track_version_codes(track: 'beta')[0].to_i
    alpha_number = google_play_track_version_codes(track: 'alpha')[0].to_i
    production_number = google_play_track_version_codes(track: 'production')[0].to_i
    # make sure we know all release number and bump latest version
    build_number = [internal_number, beta_number, production_number, alpha_number].max + 1
    puts "new build number now is #{build_number} and build version is #{raw_version}"
  end
end

Build  Number / Version

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platform :ios do
  desc "Build app with no signing for ios and increase build number or version number"
  lane :flutter_build_no_sign do
    Dir.chdir "../#{project_ios_path}" do
      sh("flutter", "doctor")
      sh("flutter", "packages", "get")
      sh("flutter", "clean")
      sh("flutter", "test")
    end
  end
end

Run Test / other commands

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platform :android do
  desc "Create change log and make it ready for both slack and google play"
  lane :setup_new_changelog do
    changelog = read_changelog(
        changelog_path: "../CHANGELOG.md",
        section_identifier: "[Build: #{version_number}]", # Specify what section to read
        excluded_markdown_elements: ['-', '###'] # Specify which markdown elements should be excluded
    )
    emojified_changelog = emojify_changelog

    # write for Google store at the moment we have only no-NO
    path = "./metadata/android/no-NO/changelogs"
    dir = File.dirname(path)
    unless File.directory?(dir)
      FileUtils.mkdir_p(dir)
    end
    path << "/#{build_number}.txt"
    File.new(path, 'w')
    File.write(path, changelog)

    puts "Changelog for version #{version_number}+#{build_number}: #{changelog}"
  end
end

Change Log / Metadata

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platform :android do
  
  desc "update git"
  lane :git_actions do
    # Ensure that your git status is not dirty
    ensure_git_status_clean
    #add git tag
    add_git_tag(build_number: version_number)
    # Commit the version bump
    commit_version_bump
    # Push the new commit and tag back to your git remote
    push_to_git_remote
  end
  
  # and many more 
  # capture screenshots for android
  # upload to Google Play
  # Run tests
  # generate icons
  # add beta badge 
  # lots of other plugins 
end

more Lanes

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  desc "Build and release to internal tester"
  lane :internal do
    prepare(release: false, environment: 'development')
    setup_new_changelog
    release_to_store(track: 'internal')
  end

  desc "Deploy a new version to the Google Play production / First to beta and then we can promote to Production Manually"
  lane :prod do
    prepare(release: true, environment: 'production')
    setup_new_changelog
    release_to_store(track: "beta")
  end

  desc "Deploy a new version to the Google Play Beta"
  lane :beta do
    prepare(release: true, environment: 'production')
    setup_new_changelog
    release_to_store(track: "alpha")
  end

Deployment Lanes

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if [[ "$1" == "ios" ]] || [[ "$1" == "android" ]]; then
  bundle exec fastlane "$1" "$DEPLOYMENT_LANE"
fi

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Summary

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Git Flow

1

Fastlane / CD - CI

1

Branching + Release flow

1

What we have learned

mhadaily

Majid Hajian

@mhadaily

Slides and link to source code

slides.com/mhadaily

SVG icons credited to undraw.co

Applying DevOps in Flutter Mobile Development

By Majid Hajian

Applying DevOps in Flutter Mobile Development

  • 2,844