Module: Percy::Client::Environment

Defined in:
lib/percy/client/environment.rb

Defined Under Namespace

Classes: Error, RepoNotFoundError

Constant Summary collapse

GIT_FORMAT_LINES = 
[
  'COMMIT_SHA:%H',
  'AUTHOR_NAME:%an',
  'AUTHOR_EMAIL:%ae',
  'COMMITTER_NAME:%cn',
  'COMMITTER_EMAIL:%ce',
  'COMMITTED_DATE:%ai',
  # Note: order is important, this must come last because the regex is a multiline match.
  'COMMIT_MESSAGE:%B',
].freeze

Class Method Summary collapse

Class Method Details

._commit_sha ⇒ Object 



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# File 'lib/percy/client/environment.rb', line 79

def self._commit_sha
  return ENV['PERCY_COMMIT'] if ENV['PERCY_COMMIT']

  case current_ci
  when :jenkins
    # Pull Request Builder Plugin OR Git Plugin.
    ENV['ghprbActualCommit'] || ENV['GIT_COMMIT']
  when :travis
    ENV['TRAVIS_COMMIT']
  when :circle
    ENV['CIRCLE_SHA1']
  when :codeship
    ENV['CI_COMMIT_ID']
  when :drone
    ENV['DRONE_COMMIT']
  when :semaphore
    ENV['REVISION']
  when :buildkite
    # Buildkite mixes SHAs and non-SHAs in BUILDKITE_COMMIT, so we return null if non-SHA.
    return if ENV['BUILDKITE_COMMIT'] == 'HEAD'
    ENV['BUILDKITE_COMMIT']
  when :gitlab
    ENV['CI_COMMIT_SHA']
  end
end

._get_origin_url ⇒ Object 



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# File 'lib/percy/client/environment.rb', line 240

def self._get_origin_url
  `git config --get remote.origin.url`
end

._git_commit_output ⇒ Object 



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# File 'lib/percy/client/environment.rb', line 69

def self._git_commit_output
  raw_git_output = _raw_commit_output(_commit_sha) if _commit_sha
  raw_git_output ||= _raw_commit_output('HEAD')
  if raw_git_output && raw_git_output.encoding.to_s == 'US-ASCII'
    raw_git_output = raw_git_output.force_encoding('UTF-8')
  end
  raw_git_output
end

._raw_branch_output ⇒ Object 



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# File 'lib/percy/client/environment.rb', line 163

def self._raw_branch_output
  # Discover from local git repo branch name.
  if Gem.win_platform?
    `git rev-parse --abbrev-ref HEAD 2> NUL`.strip
  else
    `git rev-parse --abbrev-ref HEAD 2> /dev/null`.strip
  end
end

._raw_commit_output(commit_sha) ⇒ Object 



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# File 'lib/percy/client/environment.rb', line 106

def self._raw_commit_output(commit_sha)
  format = GIT_FORMAT_LINES.join('%n') # "git show" format uses %n for newlines.
  output = if Gem.win_platform?
    `git show --quiet #{commit_sha} --format="#{format}" 2> NUL`.strip
  else
    `git show --quiet #{commit_sha} --format="#{format}" 2> /dev/null`.strip
  end
  return if $CHILD_STATUS.to_i != 0
  output
end

.branch ⇒ Object

The name of the current branch.



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# File 'lib/percy/client/environment.rb', line 122

def self.branch
  return ENV['PERCY_BRANCH'] if ENV['PERCY_BRANCH']

  result = case current_ci
  when :jenkins
    ENV['ghprbSourceBranch']
  when :travis
    if pull_request_number
      ENV['TRAVIS_PULL_REQUEST_BRANCH']
    else
      ENV['TRAVIS_BRANCH']
    end
  when :circle
    ENV['CIRCLE_BRANCH']
  when :codeship
    ENV['CI_BRANCH']
  when :drone
    ENV['DRONE_BRANCH']
  when :semaphore
    ENV['BRANCH_NAME']
  when :buildkite
    ENV['BUILDKITE_BRANCH']
  when :gitlab
    ENV['CI_COMMIT_REF_NAME']
  else
    _raw_branch_output
  end

  if result == ''
    STDERR.puts '[percy] Warning: not in a git repo, no branch detected.'
    result = nil
  end
  result
end

.ci_info ⇒ Object 



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# File 'lib/percy/client/environment.rb', line 34

def self.ci_info
  [current_ci, ci_version].compact.join('/')
end

.ci_version ⇒ Object 



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# File 'lib/percy/client/environment.rb', line 29

def self.ci_version
  return unless current_ci == :gitlab
  ENV['CI_SERVER_VERSION']
end

.commit ⇒ Hash

not be found.

Returns:

  • (Hash) —

    All commit data from the current commit. Might be empty if commit data could



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# File 'lib/percy/client/environment.rb', line 40

def self.commit
  # Try getting data from git itself.
  # If this has a result, it means git is present in the system.
  git_data_from_git = _git_commit_output

  parse = ->(regex) { (git_data_from_git && git_data_from_git.match(regex) || [])[1] }

  commit_sha = _commit_sha || parse.call(/COMMIT_SHA:(.*)/)

  {
    # The only required attribute:
    branch: branch,
    # An optional but important attribute:
    sha: commit_sha,

    # Optional attributes:
    # If we have the git information, read from those rather than env vars.
    # The GIT_ environment vars are from the Jenkins Git Plugin, but could be
    # used generically. This behavior may change in the future.
    message: parse.call(/COMMIT_MESSAGE:(.*)/),
    committed_at: parse.call(/COMMITTED_DATE:(.*)/),
    author_name: parse.call(/AUTHOR_NAME:(.*)/) || ENV['GIT_AUTHOR_NAME'],
    author_email: parse.call(/AUTHOR_EMAIL:(.*)/) || ENV['GIT_AUTHOR_EMAIL'],
    committer_name: parse.call(/COMMITTER_NAME:(.*)/) || ENV['GIT_COMMITTER_NAME'],
    committer_email: parse.call(/COMMITTER_EMAIL:(.*)/) || ENV['GIT_COMMITTER_EMAIL'],
  }
end

.current_ci ⇒ Object 



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# File 'lib/percy/client/environment.rb', line 18

def self.current_ci
  return :travis if ENV['TRAVIS_BUILD_ID']
  return :jenkins if ENV['JENKINS_URL'] && ENV['ghprbPullId'] # Pull Request Builder plugin.
  return :circle if ENV['CIRCLECI']
  return :codeship if ENV['CI_NAME'] && ENV['CI_NAME'] == 'codeship'
  return :drone if ENV['DRONE'] == 'true'
  return :semaphore if ENV['SEMAPHORE'] == 'true'
  return :buildkite if ENV['BUILDKITE'] == 'true'
  return :gitlab if ENV['GITLAB_CI'] == 'true'
end

.parallel_nonce ⇒ Object

A nonce which will be the same for all nodes of a parallel build, used to identify shards of the same CI build. This is usually just the CI environment build ID.



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# File 'lib/percy/client/environment.rb', line 200

def self.parallel_nonce
  return ENV['PERCY_PARALLEL_NONCE'] if ENV['PERCY_PARALLEL_NONCE']

  case current_ci
  when :travis
    ENV['TRAVIS_BUILD_NUMBER']
  when :circle
    ENV['CIRCLE_WORKFLOW_WORKSPACE_ID'] || ENV['CIRCLE_BUILD_NUM']
  when :jenkins
    ENV['BUILD_NUMBER']
  when :codeship
    ENV['CI_BUILD_NUMBER'] || ENV['CI_BUILD_ID']
  when :semaphore
    "#{ENV['SEMAPHORE_BRANCH_ID']}/#{ENV['SEMAPHORE_BUILD_NUMBER']}"
  when :buildkite
    ENV['BUILDKITE_BUILD_ID']
  when :gitlab
    ENV['CI_JOB_ID']
  end
end

.parallel_total_shards ⇒ Object 



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# File 'lib/percy/client/environment.rb', line 221

def self.parallel_total_shards
  return Integer(ENV['PERCY_PARALLEL_TOTAL']) if ENV['PERCY_PARALLEL_TOTAL']

  var = case current_ci
  when :circle
    'CIRCLE_NODE_TOTAL'
  when :travis
    'CI_NODE_TOTAL'
  when :codeship
    'CI_NODE_TOTAL'
  when :semaphore
    'SEMAPHORE_THREAD_COUNT'
  when :buildkite
    'BUILDKITE_PARALLEL_JOB_COUNT'
  end
  Integer(ENV[var]) if var && ENV[var] && !ENV[var].empty?
end

.pull_request_number ⇒ Object 



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# File 'lib/percy/client/environment.rb', line 173

def self.pull_request_number
  return ENV['PERCY_PULL_REQUEST'] if ENV['PERCY_PULL_REQUEST']

  case current_ci
  when :jenkins
    # GitHub Pull Request Builder plugin.
    ENV['ghprbPullId']
  when :travis
    ENV['TRAVIS_PULL_REQUEST'] if ENV['TRAVIS_PULL_REQUEST'] != 'false'
  when :circle
    if ENV['CI_PULL_REQUESTS'] && ENV['CI_PULL_REQUESTS'] != ''
      ENV['CI_PULL_REQUESTS'].split('/')[-1]
    end
  when :codeship
    # Unfortunately, codeship always returns 'false' for CI_PULL_REQUEST. For now, return nil.
    nil
  when :drone
    ENV['CI_PULL_REQUEST']
  when :semaphore
    ENV['PULL_REQUEST_NUMBER']
  when :buildkite
    ENV['BUILDKITE_PULL_REQUEST'] if ENV['BUILDKITE_PULL_REQUEST'] != 'false'
  end
end

.target_branch ⇒ Object

The target branch to compare against (if unset, Percy will pick master).



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# File 'lib/percy/client/environment.rb', line 158

def self.target_branch
  return ENV['PERCY_TARGET_BRANCH'] if ENV['PERCY_TARGET_BRANCH']
end

.target_commit_sha ⇒ Object 



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# File 'lib/percy/client/environment.rb', line 117

def self.target_commit_sha
  return ENV['PERCY_TARGET_COMMIT'] if ENV['PERCY_TARGET_COMMIT']
end