First pass at making it a bit quicker to add more tests.

lib/logstash/outputs/jdbc.rb

@@ -269,7 +269,7 @@ class LogStash::Outputs::Jdbc < LogStash::Outputs::Base
 
   def add_statement_event_params(statement, event)
     @statement[1..-1].each_with_index do |i, idx|
-      if @enable_event_as_json_keyword and i.is_a? String and i == @event_as_json_keyword
+      if @enable_event_as_json_keyword == true and i.is_a? String and i == @event_as_json_keyword
         value = event.to_json
       elsif i.is_a? String
         value = event.get(i)
@@ -300,7 +300,8 @@ class LogStash::Outputs::Jdbc < LogStash::Outputs::Base
           statement.setInt(idx + 1, value)
         end
       when BigDecimal
-        statement.setBigDecimal(idx + 1, value)
+        # TODO: There has to be a better way than this. Find it.
+        statement.setBigDecimal(idx + 1, java.math.BigDecimal.new(value.to_s))
       when Float
         statement.setFloat(idx + 1, value)
       when String
@@ -326,16 +327,14 @@ class LogStash::Outputs::Jdbc < LogStash::Outputs::Base
 
   def log_jdbc_exception(exception, retrying, event)
     current_exception = exception
-    log_text = 'JDBC - Exception. ' + (retrying ? 'Retrying' : 'Not retrying') + '.'
+    log_text = 'JDBC - Exception. ' + (retrying ? 'Retrying' : 'Not retrying') 
-    
-    if(event != nil)
-        log_text += ' event: "' + event + '".'
-    end
     
     log_method = (retrying ? 'warn' : 'error')
 
     loop do
-      @logger.send(log_method, log_text, :exception => current_exception)
+      # TODO reformat event output so that it only shows the fields necessary.
+
+      @logger.send(log_method, log_text, :exception => current_exception, :statement => @statement[0], :event => event)
 
       if current_exception.respond_to? 'getNextException'
         current_exception = current_exception.getNextException()

scripts/travis-before_script.sh

@@ -1,8 +1,10 @@
 #!/bin/bash
 wget http://search.maven.org/remotecontent?filepath=org/apache/derby/derby/10.12.1.1/derby-10.12.1.1.jar -O /tmp/derby.jar
 
-sudo apt-get install mysql-server -qq -y
+sudo apt-get install mysql-server postgresql-client postgresql -qq -y
-echo "create database logstash_output_jdbc_test;" | mysql -u root
+echo "create database logstash; grant all privileges on logstash.* to 'logstash'@'localhost' identified by 'logstash'; flush privileges;" | sudo -u root mysql
+echo "create user logstash PASSWORD 'logstash'; create database logstash; grant all privileges on database logstash to logstash;" | sudo -u postgres psql
 
 wget http://search.maven.org/remotecontent?filepath=mysql/mysql-connector-java/5.1.38/mysql-connector-java-5.1.38.jar -O /tmp/mysql.jar
 wget http://search.maven.org/remotecontent?filepath=org/xerial/sqlite-jdbc/3.8.11.2/sqlite-jdbc-3.8.11.2.jar -O /tmp/sqlite.jar
+wget http://central.maven.org/maven2/org/postgresql/postgresql/42.1.4/postgresql-42.1.4.jar -O /tmp/postgres.jar

scripts/travis-variables.sh

@@ -1,3 +1,5 @@
 export JDBC_DERBY_JAR=/tmp/derby.jar
 export JDBC_MYSQL_JAR=/tmp/mysql.jar
 export JDBC_SQLITE_JAR=/tmp/sqlite.jar
+export JDBC_POSTGRES_JAR=/tmp/postgres.jar
+

spec/jdbc_spec_helper.rb

@@ -4,6 +4,8 @@ require 'stud/temporary'
 require 'java'
 require 'securerandom'
 
+RSpec::Support::ObjectFormatter.default_instance.max_formatted_output_length = 80000
+
 RSpec.configure do |c|
 
   def start_service(name)
@@ -58,24 +60,53 @@ RSpec.shared_context 'when outputting messages' do
     "DROP TABLE #{jdbc_test_table}"
   end
 
+  let(:jdbc_statement_fields) do
+    [
+      {db_field: "created_at",       db_type: "datetime",      db_value: '?',  event_field: '@timestamp'},
+      {db_field: "message",          db_type: "varchar(512)",  db_value: '?',  event_field: 'message'},
+      {db_field: "message_sprintf",  db_type: "varchar(512)",  db_value: '?',  event_field: 'sprintf-%{message}'},
+      {db_field: "static_int",       db_type: "int",           db_value: '?',  event_field: 'int'},
+      {db_field: "static_bigint",    db_type: "bigint",        db_value: '?',  event_field: 'bigint'},
+      {db_field: "static_float",     db_type: "float",         db_value: '?',  event_field: 'float'},
+      {db_field: "static_bool",      db_type: "boolean",       db_value: '?',  event_field: 'bool'},
+      {db_field: "static_bigdec",    db_type: "bigdecimal",    db_value: '?',  event_field: 'bigdec'}
+    ]
+  end
+
   let(:jdbc_create_table) do
-    "CREATE table #{jdbc_test_table} (created_at datetime not null, message varchar(512) not null, message_sprintf varchar(512) not null, static_int int not null, static_bit bit not null, static_bigint bigint not null, static_float float not null)"
+    fields = jdbc_statement_fields.collect { |entry| "#{entry[:db_field]} #{entry[:db_type]} not null" }.join(", ")
+
+    "CREATE table #{jdbc_test_table} (#{fields})"
+  end
+
+  let(:jdbc_drop_table) do
+    "DROP table #{jdbc_test_table}"
   end
 
   let(:jdbc_statement) do
-    ["insert into #{jdbc_test_table} (created_at, message, message_sprintf, static_int, static_bit, static_bigint, static_float) values(?, ?, ?, ?, ?, ?, ?)", '@timestamp', 'message', 'sprintf-%{message}', 1, true, 4000881632477184, 12.1]
+    fields = jdbc_statement_fields.collect { |entry| "#{entry[:db_field]}" }.join(", ")
+    values = jdbc_statement_fields.collect { |entry| "#{entry[:db_value]}" }.join(", ")
+    statement = jdbc_statement_fields.collect { |entry| entry[:event_field] }
+
+    statement.insert(0, "insert into #{jdbc_test_table} (#{fields}) values(#{values})")
   end
 
   let(:systemd_database_service) do
     nil
   end
 
-  let(:event_fields) do
+  let(:event) do
-    { message: "test-message #{SecureRandom.uuid}" }
+    # TODO: Auto generate fields from jdbc_statement_fields
+    LogStash::Event.new({ 
+      message: "test-message #{SecureRandom.uuid}",
+      float: 12.1,
+      bigint: 4000881632477184,
+      bool: true,
+      int: 1,
+      bigdec: BigDecimal.new("123.123")
+    })
   end
 
-  let(:event) { LogStash::Event.new(event_fields) }
-
   let(:plugin) do
     # Setup logger
     allow(LogStash::Outputs::Jdbc).to receive(:logger).and_return(logger)
@@ -93,8 +124,12 @@ RSpec.shared_context 'when outputting messages' do
     output = LogStash::Plugin.lookup('output', 'jdbc').new(jdbc_settings)
     output.register
 
+    output
+  end
+
+  before :each do
     # Setup table
-    c = output.instance_variable_get(:@pool).getConnection
+    c = plugin.instance_variable_get(:@pool).getConnection
 
     # Derby doesn't support IF EXISTS. 
     # Seems like the quickest solution. Bleurgh.
@@ -111,8 +146,16 @@ RSpec.shared_context 'when outputting messages' do
       stmt.close
       c.close
     end
+  end
 
-    output
+  # Delete table after each
+  after :each do
+    c = plugin.instance_variable_get(:@pool).getConnection
+
+    stmt = c.createStatement
+    stmt.executeUpdate(jdbc_drop_table)
+    stmt.close
+    c.close
   end
 
   it 'should save a event' do
@@ -120,6 +163,9 @@ RSpec.shared_context 'when outputting messages' do
 
     # Verify the number of items in the output table
     c = plugin.instance_variable_get(:@pool).getConnection
+
+    # TODO replace this simple count with a check of the actual contents
+
     stmt = c.prepareStatement("select count(*) as total from #{jdbc_test_table} where message = ?")
     stmt.setString(1, event.get('message'))
     rs = stmt.executeQuery
@@ -143,7 +189,7 @@ RSpec.shared_context 'when outputting messages' do
   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?
+    skip "does not run as a service, or known issue with test" if systemd_database_service.nil?
 
     p = plugin
 

spec/outputs/jdbc_derby_spec.rb

@@ -2,15 +2,23 @@ require_relative '../jdbc_spec_helper'
 
 describe 'logstash-output-jdbc: derby', if: ENV['JDBC_DERBY_JAR'] do
   include_context 'rspec setup'
-  include_context 'when initializing'
   include_context 'when outputting messages'
 
   let(:jdbc_jar_env) do
     'JDBC_DERBY_JAR'
   end
 
-  let(:jdbc_create_table) do
+  let(:jdbc_statement_fields) do
-    "CREATE table #{jdbc_test_table} (created_at timestamp not null, message varchar(512) not null, message_sprintf varchar(512) not null, static_int int not null, static_bit boolean not null, static_bigint bigint not null, static_float float not null)"
+    [
+      {db_field: "created_at",       db_type: "timestamp",     db_value: 'CAST(? as timestamp)',  event_field: '@timestamp'},
+      {db_field: "message",          db_type: "varchar(512)",  db_value: '?',                     event_field: 'message'},
+      {db_field: "message_sprintf",  db_type: "varchar(512)",  db_value: '?',                     event_field: 'sprintf-%{message}'},
+      {db_field: "static_int",       db_type: "int",           db_value: '?',                     event_field: 'int'},
+      {db_field: "static_bigint",    db_type: "bigint",        db_value: '?',                     event_field: 'bigint'},
+      {db_field: "static_float",     db_type: "float",         db_value: '?',                     event_field: 'float'},
+      {db_field: "static_bool",      db_type: "boolean",       db_value: '?',                     event_field: 'bool'},
+      {db_field: "static_bigdec",    db_type: "decimal",       db_value: '?',                     event_field: 'bigdec'}      
+    ]
   end
 
   let(:jdbc_settings) do

spec/outputs/jdbc_mysql_spec.rb

@@ -2,7 +2,6 @@ require_relative '../jdbc_spec_helper'
 
 describe 'logstash-output-jdbc: mysql', if: ENV['JDBC_MYSQL_JAR'] do
   include_context 'rspec setup'
-  include_context 'when initializing'
   include_context 'when outputting messages'
 
   let(:jdbc_jar_env) do
@@ -16,7 +15,7 @@ describe 'logstash-output-jdbc: mysql', if: ENV['JDBC_MYSQL_JAR'] do
   let(:jdbc_settings) do
     {
       'driver_class' => 'com.mysql.jdbc.Driver',
-      'connection_string' => 'jdbc:mysql://localhost/logstash_output_jdbc_test?user=root',
+      'connection_string' => 'jdbc:mysql://localhost/logstash?user=logstash&password=logstash',
       'driver_jar_path' => ENV[jdbc_jar_env],
       'statement' => jdbc_statement,
       'max_flush_exceptions' => 1

spec/outputs/jdbc_postgres_spec.rb

@@ -0,0 +1,41 @@
+require_relative '../jdbc_spec_helper'
+
+describe 'logstash-output-jdbc: postgres', if: ENV['JDBC_POSTGRES_JAR'] do
+  include_context 'rspec setup'
+  include_context 'when outputting messages'
+
+  let(:jdbc_jar_env) do
+    'JDBC_POSTGRES_JAR'
+  end
+
+  # TODO: Postgres doesnt kill connections fast enough for the test to pass
+  # Investigate options.
+
+  #let(:systemd_database_service) do
+  #  'postgresql'
+  #end
+
+  let(:jdbc_statement_fields) do
+    [
+      {db_field: "created_at",       db_type: "timestamp",     db_value: 'CAST(? as timestamp)',  event_field: '@timestamp'},
+      {db_field: "message",          db_type: "varchar(512)",  db_value: '?',                     event_field: 'message'},
+      {db_field: "message_sprintf",  db_type: "varchar(512)",  db_value: '?',                     event_field: 'sprintf-%{message}'},
+      {db_field: "static_int",       db_type: "int",           db_value: '?',                     event_field: 'int'},
+      {db_field: "static_bigint",    db_type: "bigint",        db_value: '?',                     event_field: 'bigint'},
+      {db_field: "static_float",     db_type: "float",         db_value: '?',                     event_field: 'float'},
+      {db_field: "static_bool",      db_type: "boolean",       db_value: '?',                     event_field: 'bool'},
+      {db_field: "static_bigdec",    db_type: "decimal",       db_value: '?',                     event_field: 'bigdec'}
+
+    ]
+  end
+
+  let(:jdbc_settings) do
+    {
+      'driver_class' => 'org.postgresql.Driver',
+      'connection_string' => 'jdbc:postgresql://localhost/logstash?user=logstash&password=logstash',
+      'driver_jar_path' => ENV[jdbc_jar_env],
+      'statement' => jdbc_statement,
+      'max_flush_exceptions' => 1
+    }
+  end
+end

spec/outputs/jdbc_sqlite_spec.rb

@@ -8,7 +8,6 @@ describe 'logstash-output-jdbc: sqlite', if: ENV['JDBC_SQLITE_JAR'] do
   end
 
   include_context 'rspec setup'
-  include_context 'when initializing'
   include_context 'when outputting messages'
 
   let(:jdbc_jar_env) do