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require "net/http"
require "zlib"
module InfluxDB # :nodoc:
Error = Class.new StandardError
AuthenticationError = Class.new Error
ConnectionError = Class.new Error
LineProtocolError = Class.new Error
SeriesNotFound = Class.new Error
JSONParserError = Class.new Error
QueryError = Class.new Error
# When executing queries via HTTP, some errors can more or less safely
# be ignored and we can retry the query again. This following
# exception classes shall be deemed as "safe".
#
# Taken from: https://github.com/lostisland/faraday/blob/master/lib/faraday/adapter/net_http.rb
RECOVERABLE_EXCEPTIONS = [
Errno::ECONNABORTED,
Errno::ECONNREFUSED,
Errno::ECONNRESET,
Errno::EHOSTUNREACH,
Errno::EINVAL,
Errno::ENETUNREACH,
Net::HTTPBadResponse,
Net::HTTPHeaderSyntaxError,
Net::ProtocolError,
SocketError,
(OpenSSL::SSL::SSLError if defined?(OpenSSL)),
].compact.freeze
# Exception classes which hint to a larger problem on the server side,
# like insuffient resources. If we encouter on of the following, wo
# _don't_ retry a query but escalate it upwards.
NON_RECOVERABLE_EXCEPTIONS = [
EOFError,
Zlib::Error,
].freeze
NON_RECOVERABLE_MESSAGE = "The server has sent incomplete data" \
" (insufficient resources are a possible cause).".freeze
end
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