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require 'spec_helper'
describe Mongo::Server::Monitor do
let(:address) do
default_address
end
let(:listeners) do
Mongo::Event::Listeners.new
end
describe '#scan!' do
context 'when calling multiple times in succession' do
let(:monitor) do
described_class.new(address, listeners, TEST_OPTIONS)
end
it 'throttles the scans to minimum 500ms' do
start = Time.now
monitor.scan!
monitor.scan!
expect(Time.now - start).to be >= 0.5
end
end
context 'when the ismaster fails the first time' do
let(:monitor) do
described_class.new(address, listeners, TEST_OPTIONS)
end
let(:socket) do
monitor.connection.connect!
monitor.connection.__send__(:socket)
end
before do
expect(socket).to receive(:write).once.and_raise(Mongo::Error::SocketError)
expect(socket).to receive(:write).and_call_original
monitor.scan!
end
it 'retries the ismaster', if: standalone? do
expect(monitor.description).to be_standalone
end
it 'retries the ismaster', if: replica_set? do
expect(monitor.description).to be_primary
end
it 'retries the ismaster', if: sharded? do
expect(monitor.description).to be_mongos
end
end
context 'when the ismaster command succeeds' do
let(:monitor) do
described_class.new(address, listeners, TEST_OPTIONS)
end
before do
monitor.scan!
end
it 'updates the server description', if: standalone? do
expect(monitor.description).to be_standalone
end
it 'updates the server description', if: replica_set? do
expect(monitor.description).to be_primary
end
it 'updates the server description', if: sharded? do
expect(monitor.description).to be_mongos
end
end
context 'when the ismaster command fails' do
context 'when no server is running on the address' do
let(:bad_address) do
Mongo::Address.new('127.0.0.1:27050')
end
let(:monitor) do
described_class.new(bad_address, listeners)
end
before do
monitor.scan!
end
it 'keeps the server unknown' do
expect(monitor.description).to be_unknown
end
end
context 'when the socket gets an exception' do
let(:bad_address) do
default_address
end
let(:monitor) do
described_class.new(bad_address, listeners)
end
let(:socket) do
monitor.connection.connect!
monitor.connection.__send__(:socket)
end
before do
expect(socket).to receive(:write).twice.and_raise(Mongo::Error::SocketError)
monitor.scan!
end
it 'keeps the server unknown' do
expect(monitor.description).to be_unknown
end
it 'disconnects the connection' do
expect(monitor.connection).to_not be_connected
end
end
end
end
describe '#heartbeat_frequency' do
context 'when an option is provided' do
let(:monitor) do
described_class.new(address, listeners, :heartbeat_frequency => 5)
end
it 'returns the option' do
expect(monitor.heartbeat_frequency).to eq(5)
end
end
context 'when no option is provided' do
let(:monitor) do
described_class.new(address, listeners)
end
it 'defaults to 10' do
expect(monitor.heartbeat_frequency).to eq(10)
end
end
end
describe '#run!' do
let(:monitor) do
described_class.new(address, listeners, :heartbeat_frequency => 1)
end
before do
monitor.run!
sleep(1)
end
it 'refreshes the server on the provided interval' do
expect(monitor.description).to_not be_nil
end
end
describe '#restart!' do
let(:monitor) do
described_class.new(address, listeners, TEST_OPTIONS)
end
let!(:thread) do
monitor.run!
end
context 'when the monitor is already running' do
it 'does not create a new thread' do
expect(monitor.restart!).to be(thread)
end
end
context 'when the monitor is not already running' do
before do
monitor.stop!
sleep(1)
end
it 'creates a new thread' do
expect(monitor.restart!).not_to be(thread)
end
end
end
describe '#stop' do
let(:monitor) do
described_class.new(address, listeners, TEST_OPTIONS)
end
let!(:thread) do
monitor.run!
end
before do
expect(monitor.connection).to receive(:disconnect!).and_call_original
monitor.stop!
sleep(1)
end
it 'kills the monitor thread' do
expect(thread.stop?).to be(true)
end
end
describe '#connection' do
context 'when there is a connect_timeout option set' do
let(:connect_timeout) do
1
end
let(:monitor) do
described_class.new(address, listeners, TEST_OPTIONS.merge(connect_timeout: connect_timeout))
end
it 'sets the value as the timeout on the connection' do
expect(monitor.connection.timeout).to eq(connect_timeout)
end
it 'set the value as the timeout on the socket' do
monitor.connection.connect!
expect(monitor.connection.send(:socket).timeout).to eq(connect_timeout)
end
end
end
end
|
