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|
# frozen_string_literal: true
# rubocop:todo all
require_relative './adds_diagnostics'
module PerformsModernRetries
shared_examples 'it performs modern retries' do
context 'for connection error' do
before do
client.use('admin').command(
configureFailPoint: 'failCommand',
mode: { times: times },
data: {
failCommands: [command_name],
closeConnection: true,
}
)
end
context 'when error occurs once' do
let(:times) { 1 }
it 'retries and the operation succeeds' do
expect(Mongo::Logger.logger).to receive(:warn).once.with(/modern.*attempt 1/).and_call_original
perform_operation
expect(actual_result).to eq(expected_successful_result)
end
end
context 'when error occurs twice' do
let(:times) { 2 }
it 'retries and the operation and fails' do
expect(Mongo::Logger.logger).to receive(:warn).once.with(/modern.*attempt 1/).and_call_original
expect do
perform_operation
end.to raise_error(Mongo::Error::SocketError)
expect(actual_result).to eq(expected_failed_result)
end
it_behaves_like 'it adds diagnostics'
end
end
context 'for ETIMEDOUT' do
# blockConnection option in failCommand was introduced in
# server version 4.4
min_server_fcv '4.4'
# shorten socket timeout so these tests take less time to run
let(:socket_timeout) { 1 }
before do
client.use('admin').command(
configureFailPoint: 'failCommand',
mode: { times: times },
data: {
failCommands: [command_name],
blockConnection: true,
blockTimeMS: 1100,
}
)
end
context 'when error occurs once' do
let(:times) { 1 }
it 'retries and the operation succeeds' do
expect(Mongo::Logger.logger).to receive(:warn).once.with(/modern.*attempt 1/).and_call_original
perform_operation
expect(actual_result).to eq(expected_successful_result)
end
end
context 'when error occurs twice' do
let(:times) { 2 }
it 'retries and the operation and fails' do
expect(Mongo::Logger.logger).to receive(:warn).once.with(/modern.*attempt 1/).and_call_original
expect do
perform_operation
end.to raise_error(Mongo::Error::SocketTimeoutError)
end
it_behaves_like 'it adds diagnostics'
after do
# Assure that the server has completed the operation before moving
# on to the next test.
sleep 1
end
end
end
context 'on server versions >= 4.4' do
min_server_fcv '4.4'
context 'for OperationFailure with RetryableWriteError label' do
before do
client.use('admin').command(
configureFailPoint: 'failCommand',
mode: { times: times },
data: {
failCommands: [command_name],
errorCode: 5, # normally NOT a retryable error code
errorLabels: ['RetryableWriteError']
}
)
end
context 'when error occurs once' do
let(:times) { 1 }
it 'retries and the operation and succeeds' do
expect(Mongo::Logger.logger).to receive(:warn).once.with(/modern.*attempt 1/).and_call_original
perform_operation
expect(actual_result).to eq(expected_successful_result)
end
end
context 'when error occurs twice' do
let(:times) { 2 }
it 'retries the operation and fails' do
expect(Mongo::Logger.logger).to receive(:warn).once.with(/modern.*attempt 1/).and_call_original
expect do
perform_operation
end.to raise_error(Mongo::Error::OperationFailure, /5/)
expect(actual_result).to eq(expected_failed_result)
end
it_behaves_like 'it adds diagnostics'
end
end
context 'for OperationFailure without RetryableWriteError label' do
before do
client.use('admin').command(
configureFailPoint: 'failCommand',
mode: { times: 1 },
data: {
failCommands: [command_name],
errorCode: 91, # normally a retryable error code
errorLabels: [],
}
)
end
it 'raises the error' do
expect(Mongo::Logger.logger).not_to receive(:warn)
expect do
perform_operation
end.to raise_error(Mongo::Error::OperationFailure, /91/)
expect(actual_result).to eq(expected_failed_result)
end
end
end
context 'on server versions < 4.4' do
max_server_fcv '4.2'
context 'for OperationFailure with retryable code' do
before do
client.use('admin').command(
configureFailPoint: 'failCommand',
mode: { times: times },
data: {
failCommands: [command_name],
errorCode: 91, # a retryable error code
}
)
end
context 'when error occurs once' do
let(:times) { 1 }
it 'retries and the operation succeeds' do
expect(Mongo::Logger.logger).to receive(:warn).once.with(/modern.*attempt 1/).and_call_original
perform_operation
expect(actual_result).to eq(expected_successful_result)
end
end
context 'when error occurs twice' do
let(:times) { 2 }
it 'retries and the operation and fails' do
expect(Mongo::Logger.logger).to receive(:warn).once.with(/modern.*attempt 1/).and_call_original
expect do
perform_operation
end.to raise_error(Mongo::Error::OperationFailure, /91/)
expect(actual_result).to eq(expected_failed_result)
end
it_behaves_like 'it adds diagnostics'
end
end
context 'for OperationFailure with non-retryable code' do
before do
client.use('admin').command(
configureFailPoint: 'failCommand',
mode: { times: times },
data: {
failCommands: [command_name],
errorCode: 5, # a non-retryable error code
}
)
end
let(:times) { 1 }
it 'raises the error' do
expect(Mongo::Logger.logger).not_to receive(:warn)
expect do
perform_operation
end.to raise_error(Mongo::Error::OperationFailure, /5/)
expect(actual_result).to eq(expected_failed_result)
end
end
end
end
end
|
