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# Call an API with given options.
#
# @return [Array<(Object, Integer, Hash)>] an array of 3 elements:
# the data deserialized from response body (could be nil), response status code and response headers.
def call_api(http_method, path, opts = {})
stream = nil
begin
response = connection(opts).public_send(http_method.to_sym.downcase) do |req|
build_request(http_method, path, req, opts)
stream = download_file(request) if opts[:return_type] == 'File' || opts[:return_type] == 'Binary'
end
if config.debugging
config.logger.debug "HTTP response body ~BEGIN~\n#{response.body}\n~END~\n"
end
unless response.success?
if response.status == 0 && response.respond_to?(:return_message)
# Errors from libcurl will be made visible here
fail ApiError.new(code: 0,
message: response.return_message)
else
fail ApiError.new(code: response.status,
response_headers: response.headers,
response_body: response.body),
response.reason_phrase
end
end
rescue Faraday::TimeoutError
fail ApiError.new('Connection timed out')
rescue Faraday::ConnectionFailed
fail ApiError.new('Connection failed')
end
if opts[:return_type] == 'File' || opts[:return_type] == 'Binary'
data = deserialize_file(stream)
elsif opts[:return_type]
data = deserialize(response, opts[:return_type])
else
data = nil
end
return data, response.status, response.headers
end
# Builds the HTTP request
#
# @param [String] http_method HTTP method/verb (e.g. POST)
# @param [String] path URL path (e.g. /account/new)
# @option opts [Hash] :header_params Header parameters
# @option opts [Hash] :query_params Query parameters
# @option opts [Hash] :form_params Query parameters
# @option opts [Object] :body HTTP body (JSON/XML)
# @return [Faraday::Request] A Faraday Request
def build_request(http_method, path, request, opts = {})
url = build_request_url(path, opts)
http_method = http_method.to_sym.downcase
header_params = @default_headers.merge(opts[:header_params] || {})
query_params = opts[:query_params] || {}
form_params = opts[:form_params] || {}
update_params_for_auth! header_params, query_params, opts[:auth_names]
if [:post, :patch, :put, :delete].include?(http_method)
req_body = build_request_body(header_params, form_params, opts[:body])
if config.debugging
config.logger.debug "HTTP request body param ~BEGIN~\n#{req_body}\n~END~\n"
end
end
request.headers = header_params
request.body = req_body
# Overload default options only if provided
request.options.params_encoder = config.params_encoder if config.params_encoder
request.options.timeout = config.timeout if config.timeout
request.url url
request.params = query_params
request
end
# Builds the HTTP request body
#
# @param [Hash] header_params Header parameters
# @param [Hash] form_params Query parameters
# @param [Object] body HTTP body (JSON/XML)
# @return [String] HTTP body data in the form of string
def build_request_body(header_params, form_params, body)
# http form
if header_params['Content-Type'] == 'application/x-www-form-urlencoded'
data = URI.encode_www_form(form_params)
elsif header_params['Content-Type'] == 'multipart/form-data'
data = {}
form_params.each do |key, value|
case value
when ::File, ::Tempfile
# TODO hardcode to application/octet-stream, need better way to detect content type
data[key] = Faraday::FilePart.new(value.path, 'application/octet-stream', value.path)
when ::Array, nil
# let Faraday handle Array and nil parameters
data[key] = value
else
data[key] = value.to_s
end
end
elsif body
data = body.is_a?(String) ? body : body.to_json
else
data = nil
end
data
end
def download_file(request)
stream = []
# handle streaming Responses
request.options.on_data = Proc.new do |chunk, overall_received_bytes|
stream << chunk
end
stream
end
def deserialize_file(response, stream)
body = response.body
if @config.return_binary_data == true
# return byte stream
encoding = body.encoding
stream.join.force_encoding(encoding)
else
# return file instead of binary data
content_disposition = response.headers['Content-Disposition']
if content_disposition && content_disposition =~ /filename=/i
filename = content_disposition[/filename=['"]?([^'"\s]+)['"]?/, 1]
prefix = sanitize_filename(filename)
else
prefix = 'download-'
end
prefix = prefix + '-' unless prefix.end_with?('-')
encoding = body.encoding
tempfile = Tempfile.open(prefix, @config.temp_folder_path, encoding: encoding)
tempfile.write(stream.join.force_encoding(encoding))
tempfile.close
config.logger.info "Temp file written to #{tempfile.path}, please copy the file to a proper folder "\
"with e.g. `FileUtils.cp(tempfile.path, '/new/file/path')` otherwise the temp file "\
"will be deleted automatically with GC. It's also recommended to delete the temp file "\
"explicitly with `tempfile.delete`"
tempfile
end
end
def connection(opts)
opts[:header_params]['Content-Type'] == 'multipart/form-data' ? connection_multipart : connection_regular
end
def connection_multipart
@connection_multipart ||= build_connection do |conn|
conn.request :multipart
conn.request :url_encoded
end
end
def connection_regular
@connection_regular ||= build_connection
end
def build_connection
Faraday.new(url: config.base_url, ssl: ssl_options, proxy: config.proxy) do |conn|
basic_auth(conn)
config.configure_middleware(conn)
yield(conn) if block_given?
conn.adapter(Faraday.default_adapter)
config.configure_connection(conn)
end
end
def ssl_options
{
ca_file: config.ssl_ca_file,
verify: config.ssl_verify,
verify_mode: config.ssl_verify_mode,
client_cert: config.ssl_client_cert,
client_key: config.ssl_client_key
}
end
def basic_auth(conn)
if config.username && config.password
if Gem::Version.new(Faraday::VERSION) >= Gem::Version.new('2.0')
conn.request(:authorization, :basic, config.username, config.password)
else
conn.request(:basic_auth, config.username, config.password)
end
end
end
