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# frozen_string_literal: true
module BulkImports
module Clients
class HTTP
API_VERSION = 'v4'
DEFAULT_PAGE = 1
DEFAULT_PER_PAGE = 30
def initialize(url:, token:, page: DEFAULT_PAGE, per_page: DEFAULT_PER_PAGE, api_version: API_VERSION)
@url = url
@token = token&.strip
@page = page
@per_page = per_page
@api_version = api_version
@compatible_instance_version = false
end
def get(resource, query = {})
request(:get, resource, query: query.reverse_merge(request_query))
end
def post(resource, body = {})
request(:post, resource, body: body)
end
def head(resource)
request(:head, resource)
end
def stream(resource, &block)
request(:get, resource, stream_body: true, &block)
end
def each_page(method, resource, query = {}, &block)
return to_enum(__method__, method, resource, query) unless block_given?
next_page = @page
while next_page
@page = next_page.to_i
response = self.public_send(method, resource, query) # rubocop: disable GitlabSecurity/PublicSend
collection = response.parsed_response
next_page = response.headers['x-next-page'].presence
yield collection
end
end
def resource_url(resource)
Gitlab::Utils.append_path(api_url, resource)
end
def validate_instance_version!
return if @compatible_instance_version
response = with_error_handling do
Gitlab::HTTP.get(resource_url(:version), default_options)
end
version = Gitlab::VersionInfo.parse(response.parsed_response['version'])
if version.major < BulkImport::MINIMUM_GITLAB_MAJOR_VERSION
raise ::BulkImports::Error.unsupported_gitlab_version
else
@compatible_instance_version = true
end
end
private
# rubocop:disable GitlabSecurity/PublicSend
def request(method, resource, options = {}, &block)
validate_instance_version!
with_error_handling do
Gitlab::HTTP.public_send(
method,
resource_url(resource),
request_options(options),
&block
)
end
end
# rubocop:enable GitlabSecurity/PublicSend
def request_options(options)
default_options.merge(options)
end
def default_options
{
headers: request_headers,
follow_redirects: false
}
end
def request_query
{
page: @page,
per_page: @per_page
}
end
def request_headers
{
'Content-Type' => 'application/json',
'Authorization' => "Bearer #{@token}"
}
end
def with_error_handling
response = yield
raise(::BulkImports::Error, "Error #{response.code}") unless response.success?
response
rescue *Gitlab::HTTP::HTTP_ERRORS => e
raise(::BulkImports::Error, e)
end
def api_url
Gitlab::Utils.append_path(@url, "/api/#{@api_version}")
end
end
end
end
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