logstash-output-jdbc/spec/jdbc_spec_helper.rb

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require 'logstash/devutils/rspec/spec_helper'
require 'logstash/outputs/jdbc'
require 'stud/temporary'
require 'java'
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require 'securerandom'
RSpec.shared_context 'rspec setup' do
it 'ensure jar is available' do
expect(ENV[jdbc_jar_env]).not_to be_nil, "#{jdbc_jar_env} not defined, required to run tests"
expect(File.exist?(ENV[jdbc_jar_env])).to eq(true), "#{jdbc_jar_env} defined, but not valid"
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end
end
RSpec.shared_context 'when initializing' do
it 'shouldn\'t register with a missing jar file' do
jdbc_settings['driver_jar_path'] = nil
plugin = LogStash::Plugin.lookup('output', 'jdbc').new(jdbc_settings)
expect { plugin.register }.to raise_error(LogStash::ConfigurationError)
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end
end
RSpec.shared_context 'when outputting messages' do
let(:logger) { double("logger") }
let(:jdbc_test_table) do
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'logstash_output_jdbc_test'
end
let(:jdbc_drop_table) do
"DROP TABLE #{jdbc_test_table}"
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end
let(:jdbc_create_table) do
"CREATE table #{jdbc_test_table} (created_at datetime not null, message varchar(512) not null)"
end
let(:systemd_database_service) do
nil
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end
let(:event_fields) do
{ message: "test-message #{SecureRandom.uuid}" }
end
let(:event) { LogStash::Event.new(event_fields) }
let(:plugin) do
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# Setup plugin
output = LogStash::Plugin.lookup('output', 'jdbc').new(jdbc_settings)
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output.register
output.logger = logger
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# Setup table
c = output.instance_variable_get(:@pool).getConnection
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# Derby doesn't support IF EXISTS.
# Seems like the quickest solution. Bleurgh.
begin
stmt = c.createStatement
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stmt.executeUpdate(jdbc_drop_table)
rescue
# noop
ensure
stmt.close
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stmt = c.createStatement
stmt.executeUpdate(jdbc_create_table)
stmt.close
c.close
end
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output
end
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it 'should save a event' do
expect { plugin.multi_receive([event]) }.to_not raise_error
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# Verify the number of items in the output table
c = plugin.instance_variable_get(:@pool).getConnection
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stmt = c.prepareStatement("select count(*) as total from #{jdbc_test_table} where message = ?")
stmt.setString(1, event.get('message'))
rs = stmt.executeQuery
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count = 0
count = rs.getInt('total') while rs.next
stmt.close
c.close
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expect(count).to eq(1)
end
it 'should not save event, and log an unretryable exception' do
e = event
original_event = e.get('message')
e.set('message', nil)
expect(logger).to receive(:error).once.with(/JDBC - Exception. Not retrying/, Hash)
expect { plugin.multi_receive([event]) }.to_not raise_error
e.set('message', original_event)
end
it 'it should retry after a connection loss, and log a warning' do
skip "does not run as a service" if systemd_database_service.nil?
p = plugin
# Check that everything is fine right now
expect { p.multi_receive([event]) }.not_to raise_error
# Start a thread to stop and restart the service.
t = Thread.new(systemd_database_service) { |systemd_database_service|
`sudo systemctl stop #{systemd_database_service}`
sleep 10
`sudo systemctl start #{systemd_database_service}`
}
# Wait a few seconds to the service to stop
sleep 5
expect(logger).to receive(:warn).at_least(:once).with(/JDBC - Exception. Retrying/, Hash)
expect { p.multi_receive([event]) }.to_not raise_error
t.join
end
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end