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:%an',
  'COMMITTER_EMAIL:%ae',
  '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 57

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']
  end
end

._get_origin_url ⇒ Object 



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

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

._raw_branch_output ⇒ Object 



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# File 'lib/percy/client/environment.rb', line 113

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

._raw_commit_output(commit_sha) ⇒ Object 



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# File 'lib/percy/client/environment.rb', line 78

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

.branch ⇒ Object

The name of the current branch.



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# File 'lib/percy/client/environment.rb', line 86

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

  result = case current_ci
  when :jenkins
    ENV['ghprbTargetBranch']
  when :travis
    ENV['TRAVIS_BRANCH']
  when :circle
    ENV['CIRCLE_BRANCH']
  when :codeship
    ENV['CI_BRANCH']
  when :drone
    ENV['DRONE_BRANCH']
  when :semaphore
    ENV['BRANCH_NAME']
  else
    _raw_branch_output
  end
  if result == ''
    STDERR.puts '[percy] Warning: not in a git repo, setting PERCY_BRANCH to "master".'
    result = 'master'
  end
  result
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 29

def self.commit
  output = _raw_commit_output(_commit_sha) if _commit_sha
  output = _raw_commit_output('HEAD') if !output

  # Use the specified SHA or, if not given, the parsed SHA at HEAD.
  commit_sha = _commit_sha || output && output.match(/COMMIT_SHA:(.*)/)[1]

  # If not running in a git repo, allow nils for certain commit attributes.
  extract_or_nil = lambda { |regex| (output && output.match(regex) || [])[1] }
  data = {
    # The only required attribute:
    branch: branch,
    # An optional but important attribute:
    sha: commit_sha,

    # Optional attributes:
    message: extract_or_nil.call(/COMMIT_MESSAGE:(.*)/m),
    committed_at: extract_or_nil.call(/COMMITTED_DATE:(.*)/),
    # These GIT_ environment vars are from the Jenkins Git Plugin, but could be
    # used generically. This behavior may change in the future.
    author_name: extract_or_nil.call(/AUTHOR_NAME:(.*)/) || ENV['GIT_AUTHOR_NAME'],
    author_email: extract_or_nil.call(/AUTHOR_EMAIL:(.*)/)  || ENV['GIT_AUTHOR_EMAIL'],
    committer_name: extract_or_nil.call(/COMMITTER_NAME:(.*)/) || ENV['GIT_COMMITTER_NAME'],
    committer_email: extract_or_nil.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'
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 170

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

  case current_ci
  when :circle
    ENV['CIRCLE_BUILD_NUM']
  when :travis
    ENV['TRAVIS_BUILD_NUMBER']
  when :semaphore
    ENV['SEMAPHORE_BUILD_NUMBER']
  end
end

.parallel_total_shards ⇒ Object 



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# File 'lib/percy/client/environment.rb', line 183

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

  case current_ci
  when :circle
    var = 'CIRCLE_NODE_TOTAL'
    Integer(ENV[var]) if ENV[var] && !ENV[var].empty?
  when :travis
    # Support for https://github.com/ArturT/knapsack
    var = 'CI_NODE_TOTAL'
    Integer(ENV[var]) if ENV[var] && !ENV[var].empty?
  when :semaphore
    Integer(ENV['SEMAPHORE_THREAD_COUNT'])
  end
end

.pull_request_number ⇒ Object 



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# File 'lib/percy/client/environment.rb', line 146

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.
  when :drone
    ENV['CI_PULL_REQUEST']
  when :semaphore
    ENV['PULL_REQUEST_NUMBER']
  end
end

.repo ⇒ Object 



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# File 'lib/percy/client/environment.rb', line 119

def self.repo
  return ENV['PERCY_REPO_SLUG'] if ENV['PERCY_REPO_SLUG']

  case current_ci
  when :travis
    ENV['TRAVIS_REPO_SLUG']
  when :circle
    "#{ENV['CIRCLE_PROJECT_USERNAME']}/#{ENV['CIRCLE_PROJECT_REPONAME']}"
  when :semaphore
    ENV['SEMAPHORE_REPO_SLUG']
  else
    origin_url = _get_origin_url.strip
    if origin_url == ''
      raise Percy::Client::Environment::RepoNotFoundError.new(
        'No local git repository found. ' +
        'You can manually set PERCY_REPO_SLUG to fix this.')
    end
    match = origin_url.match(Regexp.new('[:/]([^/]+\/[^/]+?)(\.git)?\Z'))
    if !match
      raise Percy::Client::Environment::RepoNotFoundError.new(
        "Could not determine repository name from URL: #{origin_url.inspect}\n" +
        "You can manually set PERCY_REPO_SLUG to fix this.")
    end
    match[1]
  end
end