gitlab-org--gitlab-foss/lib/gitlab/gitaly_client/remote_service.rb
Zeger-Jan van de Weg 11a483649e
Test if remote repository exists before cloning
When a repository does not exist on a remote, Gitaly won't be able to
clone it. This is correct behaviour, but from the clients perspective a
change in behaviour.

This change implements the client side changes that allows Gitaly to
execute a `git ls-remote <remote-url> HEAD`. This way the client has no
need to shell out to Git.

In the situation where multiple Gitalies are available, one is chosen at
random.

This commit closes https://gitlab.com/gitlab-org/gitlab-ce/issues/43929,
while its also a part of https://gitlab.com/gitlab-org/gitaly/issues/1084
2018-03-27 14:43:21 +02:00

81 lines
2.4 KiB
Ruby

module Gitlab
module GitalyClient
class RemoteService
MAX_MSG_SIZE = 128.kilobytes.freeze
def self.exists?(remote_url)
request = Gitaly::FindRemoteRepositoryRequest.new(remote: remote_url)
response = GitalyClient.call(GitalyClient.random_storage,
:remote_service,
:find_remote_repository, request,
timeout: GitalyClient.medium_timeout)
response.exists
end
def initialize(repository)
@repository = repository
@gitaly_repo = repository.gitaly_repository
@storage = repository.storage
end
def add_remote(name, url, mirror_refmaps)
request = Gitaly::AddRemoteRequest.new(
repository: @gitaly_repo,
name: name,
url: url,
mirror_refmaps: Array.wrap(mirror_refmaps).map(&:to_s)
)
GitalyClient.call(@storage, :remote_service, :add_remote, request)
end
def remove_remote(name)
request = Gitaly::RemoveRemoteRequest.new(repository: @gitaly_repo, name: name)
response = GitalyClient.call(@storage, :remote_service, :remove_remote, request)
response.result
end
def fetch_internal_remote(repository)
request = Gitaly::FetchInternalRemoteRequest.new(
repository: @gitaly_repo,
remote_repository: repository.gitaly_repository
)
response = GitalyClient.call(@storage, :remote_service,
:fetch_internal_remote, request,
remote_storage: repository.storage)
response.result
end
def update_remote_mirror(ref_name, only_branches_matching)
req_enum = Enumerator.new do |y|
y.yield Gitaly::UpdateRemoteMirrorRequest.new(
repository: @gitaly_repo,
ref_name: ref_name
)
current_size = 0
slices = only_branches_matching.slice_before do |branch_name|
current_size += branch_name.bytesize
next false if current_size < MAX_MSG_SIZE
current_size = 0
end
slices.each do |slice|
y.yield Gitaly::UpdateRemoteMirrorRequest.new(only_branches_matching: slice)
end
end
GitalyClient.call(@storage, :remote_service, :update_remote_mirror, req_enum)
end
end
end
end