gitlab-org--gitlab-foss/app/services/git_push_service.rb

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class GitPushService
attr_accessor :project, :user, :push_data, :push_commits
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# This method will be called after each git update
# and only if the provided user and project is present in GitLab.
#
# All callbacks for post receive action should be placed here.
#
# Next, this method:
# 1. Creates the push event
# 2. Ensures that the project satellite exists
# 3. Updates merge requests
# 4. Recognizes cross-references from commit messages
# 5. Executes the project's web hooks
# 6. Executes the project's services
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#
def execute(project, user, oldrev, newrev, ref)
@project, @user = project, user
# Collect data for this git push
@push_commits = project.repository.commits_between(oldrev, newrev)
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@push_data = post_receive_data(oldrev, newrev, ref)
create_push_event
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project.ensure_satellite_exists
project.repository.expire_cache
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if push_to_existing_branch?(ref, oldrev)
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project.update_merge_requests(oldrev, newrev, ref, @user)
process_commit_messages(ref)
end
if push_to_branch?(ref)
project.execute_hooks(@push_data.dup, :push_hooks)
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project.execute_services(@push_data.dup)
end
if push_to_new_branch?(ref, oldrev)
# Re-find the pushed commits.
if is_default_branch?(ref)
# Initial push to the default branch. Take the full history of that branch as "newly pushed".
@push_commits = project.repository.commits(newrev)
else
# Use the pushed commits that aren't reachable by the default branch
# as a heuristic. This may include more commits than are actually pushed, but
# that shouldn't matter because we check for existing cross-references later.
@push_commits = project.repository.commits_between(project.default_branch, newrev)
end
process_commit_messages(ref)
end
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end
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# This method provide a sample data
# generated with post_receive_data method
# for given project
#
def sample_data(project, user)
@project, @user = project, user
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@push_commits = project.repository.commits(project.default_branch, nil, 3)
post_receive_data(@push_commits.last.id, @push_commits.first.id, "refs/heads/#{project.default_branch}")
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end
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protected
def create_push_event
Event.create!(
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project: project,
action: Event::PUSHED,
data: push_data,
author_id: push_data[:user_id]
)
end
# Extract any GFM references from the pushed commit messages. If the configured issue-closing regex is matched,
# close the referenced Issue. Create cross-reference Notes corresponding to any other referenced Mentionables.
def process_commit_messages ref
is_default_branch = is_default_branch?(ref)
@push_commits.each do |commit|
# Close issues if these commits were pushed to the project's default branch and the commit message matches the
# closing regex. Exclude any mentioned Issues from cross-referencing even if the commits are being pushed to
# a different branch.
issues_to_close = commit.closes_issues(project)
author = commit_user(commit)
if !issues_to_close.empty? && is_default_branch
Thread.current[:current_user] = author
Thread.current[:current_commit] = commit
issues_to_close.each { |i| i.close && i.save }
end
# Create cross-reference notes for any other references. Omit any issues that were referenced in an
# issue-closing phrase, or have already been mentioned from this commit (probably from this commit
# being pushed to a different branch).
refs = commit.references(project) - issues_to_close
refs.reject! { |r| commit.has_mentioned?(r) }
refs.each do |r|
Note.create_cross_reference_note(r, commit, author, project)
end
end
end
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# Produce a hash of post-receive data
#
# data = {
# before: String,
# after: String,
# ref: String,
# user_id: String,
# user_name: String,
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# project_id: String,
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# repository: {
# name: String,
# url: String,
# description: String,
# homepage: String,
# },
# commits: Array,
# total_commits_count: Fixnum
# }
#
def post_receive_data(oldrev, newrev, ref)
# Total commits count
push_commits_count = push_commits.size
# Get latest 20 commits ASC
push_commits_limited = push_commits.last(20)
# Hash to be passed as post_receive_data
data = {
before: oldrev,
after: newrev,
ref: ref,
user_id: user.id,
user_name: user.name,
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project_id: project.id,
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repository: {
name: project.name,
url: project.url_to_repo,
description: project.description,
homepage: project.web_url,
},
commits: [],
total_commits_count: push_commits_count
}
# For performance purposes maximum 20 latest commits
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# will be passed as post receive hook data.
#
push_commits_limited.each do |commit|
data[:commits] << {
id: commit.id,
message: commit.safe_message,
timestamp: commit.committed_date.xmlschema,
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url: "#{Gitlab.config.gitlab.url}/#{project.path_with_namespace}/commit/#{commit.id}",
author: {
name: commit.author_name,
email: commit.author_email
}
}
end
data
end
def push_to_existing_branch? ref, oldrev
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ref_parts = ref.split('/')
# Return if this is not a push to a branch (e.g. new commits)
ref_parts[1] =~ /heads/ && oldrev != "0000000000000000000000000000000000000000"
end
def push_to_new_branch? ref, oldrev
ref_parts = ref.split('/')
ref_parts[1] =~ /heads/ && oldrev == "0000000000000000000000000000000000000000"
end
def push_to_branch? ref
ref =~ /refs\/heads/
end
def is_default_branch? ref
ref == "refs/heads/#{project.default_branch}"
end
def commit_user commit
User.where(email: commit.author_email).first ||
User.where(name: commit.author_name).first ||
user
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end
end