temporarily revert rubocop version. Unsupported under v5's java env.

Apparently MySQL on travis doesnt have the BigDecimal type?

CHANGELOG.md

@@ -1,6 +1,11 @@
 # Change Log
 All notable changes to this project will be documented in this file, from 0.2.0.
 
+## [5.3.0] - 2017-11-08
+  - Adds configuration options `enable_event_as_json_keyword` and `event_as_json_keyword`
+  - Adds BigDecimal support
+  - Adds additional logging for debugging purposes (with thanks to @mlkmhd's work)
+
 ## [5.2.1] - 2017-04-09
   - Adds Array and Hash to_json support for non-sprintf syntax
 

README.md

@@ -37,25 +37,27 @@ For development:
 
 ## Configuration options
 
-| Option | Type | Description | Required? | Default |
-| ------ | ---- | ----------- | --------- | ------- |
-| driver_class | String | Specify a driver class if autoloading fails | No | |
-| driver_auto_commit | Boolean | If the driver does not support auto commit, you should set this to false | No | True |
-| driver_jar_path | String | File path to jar file containing your JDBC driver. This is optional, and all JDBC jars may be placed in $LOGSTASH_HOME/vendor/jar/jdbc instead. | No | |
-| connection_string | String | JDBC connection URL | Yes | |
-| connection_test | Boolean | Run a JDBC connection test. Some drivers do not function correctly, and you may need to disable the connection test to supress an error. Cockroach with the postgres JDBC driver is such an example. | No | Yes |
-| connection_test_query | String | Connection test and init query string, required for some JDBC drivers that don't support isValid(). Typically you'd set to this "SELECT 1" | No |  |
-| username | String | JDBC username - this is optional as it may be included in the connection string, for many drivers | No | |
-| password | String | JDBC password - this is optional as it may be included in the connection string, for many drivers | No | |
-| statement | Array | An array of strings representing the SQL statement to run. Index 0 is the SQL statement that is prepared, all other array entries are passed in as parameters (in order). A parameter may either be a property of the event (i.e. "@timestamp", or "host") or a formatted string (i.e. "%{host} - %{message}" or "%{message}"). If a key is passed then it will be automatically converted as required for insertion into SQL. If it's a formatted string then it will be passed in verbatim. | Yes |  |
-| unsafe_statement | Boolean | If yes, the statement is evaluated for event fields - this allows you to use dynamic table names, etc. **This is highly dangerous** and you should **not** use this unless you are 100% sure that the field(s) you are passing in are 100% safe. Failure to do so will result in possible SQL injections. Example statement: [ "insert into %{table_name_field} (column) values(?)", "fieldname" ] | No | False |
-| max_pool_size | Number | Maximum number of connections to open to the SQL server at any 1 time | No | 5 |
-| connection_timeout | Number | Number of seconds before a SQL connection is closed | No | 2800 |
-| flush_size | Number | Maximum number of entries to buffer before sending to SQL - if this is reached before idle_flush_time | No | 1000 |
-| max_flush_exceptions | Number | Number of sequential flushes which cause an exception, before the set of events are discarded. Set to a value less than 1 if you never want it to stop. This should be carefully configured with respect to retry_initial_interval and retry_max_interval, if your SQL server is not highly available | No | 10 |
-| retry_initial_interval | Number | Number of seconds before the initial retry in the event of a failure. On each failure it will be doubled until it reaches retry_max_interval | No | 2 |
-| retry_max_interval | Number | Maximum number of seconds between each retry | No | 128 |
-| retry_sql_states | Array of strings | An array of custom SQL state codes you wish to retry until `max_flush_exceptions`. Useful if you're using a JDBC driver which returns retry-able, but non-standard SQL state codes in it's exceptions. | No | [] |
+| Option                       | Type             | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | Required? | Default |
+| ------                       | ----             | -----------                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | --------- | ------- |
+| driver_class                 | String           | Specify a driver class if autoloading fails                                                                                                                                                                                                                                                                                                                                                                                                                                                   | No        |         |
+| driver_auto_commit           | Boolean          | If the driver does not support auto commit, you should set this to false                                                                                                                                                                                                                                                                                                                                                                                                                      | No        | True    |
+| driver_jar_path              | String           | File path to jar file containing your JDBC driver. This is optional, and all JDBC jars may be placed in $LOGSTASH_HOME/vendor/jar/jdbc instead.                                                                                                                                                                                                                                                                                                                                               | No        |         |
+| connection_string            | String           | JDBC connection URL                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | Yes       |         |
+| connection_test              | Boolean          | Run a JDBC connection test. Some drivers do not function correctly, and you may need to disable the connection test to supress an error. Cockroach with the postgres JDBC driver is such an example.                                                                                                                                                                                                                                                                                          | No        | Yes     |
+| connection_test_query        | String           | Connection test and init query string, required for some JDBC drivers that don't support isValid(). Typically you'd set to this "SELECT 1"                                                                                                                                                                                                                                                                                                                                                    | No        |         |
+| username                     | String           | JDBC username - this is optional as it may be included in the connection string, for many drivers                                                                                                                                                                                                                                                                                                                                                                                             | No        |         |
+| password                     | String           | JDBC password - this is optional as it may be included in the connection string, for many drivers                                                                                                                                                                                                                                                                                                                                                                                             | No        |         |
+| statement                    | Array            | An array of strings representing the SQL statement to run. Index 0 is the SQL statement that is prepared, all other array entries are passed in as parameters (in order). A parameter may either be a property of the event (i.e. "@timestamp", or "host") or a formatted string (i.e. "%{host} - %{message}" or "%{message}"). If a key is passed then it will be automatically converted as required for insertion into SQL. If it's a formatted string then it will be passed in verbatim. | Yes       |         |
+| unsafe_statement             | Boolean          | If yes, the statement is evaluated for event fields - this allows you to use dynamic table names, etc. **This is highly dangerous** and you should **not** use this unless you are 100% sure that the field(s) you are passing in are 100% safe. Failure to do so will result in possible SQL injections. Example statement: [ "insert into %{table_name_field} (column) values(?)", "fieldname" ]                                                                                            | No        | False   |
+| max_pool_size                | Number           | Maximum number of connections to open to the SQL server at any 1 time                                                                                                                                                                                                                                                                                                                                                                                                                         | No        | 5       |
+| connection_timeout           | Number           | Number of seconds before a SQL connection is closed                                                                                                                                                                                                                                                                                                                                                                                                                                           | No        | 2800    |
+| flush_size                   | Number           | Maximum number of entries to buffer before sending to SQL - if this is reached before idle_flush_time                                                                                                                                                                                                                                                                                                                                                                                         | No        | 1000    |
+| max_flush_exceptions         | Number           | Number of sequential flushes which cause an exception, before the set of events are discarded. Set to a value less than 1 if you never want it to stop. This should be carefully configured with respect to retry_initial_interval and retry_max_interval, if your SQL server is not highly available                                                                                                                                                                                         | No        | 10      |
+| retry_initial_interval       | Number           | Number of seconds before the initial retry in the event of a failure. On each failure it will be doubled until it reaches retry_max_interval                                                                                                                                                                                                                                                                                                                                                  | No        | 2       |
+| retry_max_interval           | Number           | Maximum number of seconds between each retry                                                                                                                                                                                                                                                                                                                                                                                                                                                  | No        | 128     |
+| retry_sql_states             | Array of strings | An array of custom SQL state codes you wish to retry until `max_flush_exceptions`. Useful if you're using a JDBC driver which returns retry-able, but non-standard SQL state codes in it's exceptions.                                                                                                                                                                                                                                                                                        | No        | []      |
+| event_as_json_keyword        | String           | The magic key word that the plugin looks for to convert the entire event into a JSON object. As Logstash does not support this out of the box with it's `sprintf` implementation, you can use whatever this field is set to in the statement parameters                                                                                                                                                                                                                                       | No        | @event  |
+| enable_event_as_json_keyword | Boolean          | Enables the magic keyword set in the configuration option `event_as_json_keyword`. Without this enabled the plugin will not convert the `event_as_json_keyword` into JSON encoding of the entire event.                                                                                                                                                                                                                                                                                       | No        | False   |
 
 ## Example configurations
 Example logstash configurations, can now be found in the examples directory. Where possible we try to link every configuration with a tested jar.

THANKS.md

@@ -0,0 +1,18 @@
+logstash-output-jdbc is a project originally created by Karl Southern 
+(the_angry_angel), but there are a number of people that have contributed 
+or implemented key features over time. We do our best to keep this list 
+up-to-date, but you can also have a look at the nice contributor graphs
+produced by GitHub: https://github.com/theangryangel/logstash-output-jdbc/graphs/contributors
+
+ * [hordijk](https://github.com/hordijk)
+ * [dmitryakadiamond](https://github.com/dmitryakadiamond)
+ * [MassimoSporchia](https://github.com/MassimoSporchia)
+ * [ebuildy](https://github.com/ebuildy)
+ * [kushtrimjunuzi](https://github.com/kushtrimjunuzi)
+ * [josemazo](https://github.com/josemazo)
+ * [aceoliver](https://github.com/aceoliver)
+ * [roflmao](https://github.com/roflmao)
+ * [onesuper](https://github.com/onesuper)
+ * [phr0gz](https://github.com/phr0gz)
+ * [jMonsinjon](https://github.com/jMonsinjon)
+ * [mlkmhd](https://github.com/mlkmhd)

Vagrantfile

@@ -1,20 +1,19 @@
 # -*- mode: ruby -*-
 # vi: set ft=ruby :
 
+JRUBY_VERSION = "jruby-1.7"
+
 Vagrant.configure(2) do |config|
 
   config.vm.define "debian" do |deb|
-    deb.vm.box = 'debian/jessie64'
+    deb.vm.box = 'debian/stretch64'
     deb.vm.synced_folder '.', '/vagrant', type: :virtualbox
 
     deb.vm.provision 'shell', inline: <<-EOP
-      echo "deb http://ftp.debian.org/debian jessie-backports main" | tee --append /etc/apt/sources.list > /dev/null
-      sed -i 's/main/main contrib non-free/g' /etc/apt/sources.list
       apt-get update
-      apt-get remove openjdk-7-jre-headless -y -q
-      apt-get install git openjdk-8-jre curl -y -q
-      gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
-      curl -sSL https://get.rvm.io | bash -s stable --ruby=jruby-1.7
+      apt-get install openjdk-8-jre ca-certificates-java git curl -y -q
+      curl -sSL https://rvm.io/mpapis.asc | sudo gpg --import -
+      curl -sSL https://get.rvm.io | bash -s stable --ruby=#{JRUBY_VERSION}
       usermod -a -G rvm vagrant
     EOP
   end
@@ -27,8 +26,8 @@ Vagrant.configure(2) do |config|
     centos.vm.provision 'shell', inline: <<-EOP
       yum update
       yum install java-1.7.0-openjdk
-      gpg2 --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
-      curl -sSL https://get.rvm.io | bash -s stable --ruby=jruby-1.7
+      curl -sSL https://rvm.io/mpapis.asc | sudo gpg --import -
+      curl -sSL https://get.rvm.io | bash -s stable --ruby=#{JRUBY_VERSION}
       usermod -a -G rvm vagrant
     EOP
   end

examples/sql-server.md

@@ -8,8 +8,25 @@ input
 }
 output {
 	jdbc {
+		driver_jar_path => '/opt/sqljdbc42.jar'
 		connection_string => "jdbc:sqlserver://server:1433;databaseName=databasename;user=username;password=password"
 		statement => [ "INSERT INTO log (host, timestamp, message) VALUES(?, ?, ?)", "host", "@timestamp", "message" ]
 	}
+	
+}
+```
+
+Another example, with mixed static strings and parameters, with thanks to [@MassimoSporchia](https://github.com/MassimoSporchia)
+```
+input
+{
+	stdin { }
+}
+output {
+jdbc {
+		driver_jar_path => '/opt/sqljdbc42.jar'
+		connection_string => "jdbc:sqlserver://server:1433;databaseName=databasename;user=username;password=password"
+		statement => [ "INSERT INTO log (host, timestamp, message, comment) VALUES(?, ?, ?, 'static string')", "host", "@timestamp", "message" ]
+	}
 }
 ```

lib/logstash/outputs/jdbc.rb

@@ -6,6 +6,7 @@ require 'stud/interval'
 require 'java'
 require 'logstash-output-jdbc_jars'
 require 'json'
+require 'bigdecimal'
 
 # Write events to a SQL engine, using JDBC.
 #
@@ -64,7 +65,7 @@ class LogStash::Outputs::Jdbc < LogStash::Outputs::Base
   config :unsafe_statement, validate: :boolean, default: false
 
   # Number of connections in the pool to maintain
-  config :max_pool_size, validate: :number, default: 24
+  config :max_pool_size, validate: :number, default: 5
 
   # Connection timeout
   config :connection_timeout, validate: :number, default: 10000
@@ -99,6 +100,12 @@ class LogStash::Outputs::Jdbc < LogStash::Outputs::Base
   config :max_repeat_exceptions, obsolete: 'This has been replaced by max_flush_exceptions - which behaves slightly differently. Please check the documentation.'
   config :max_repeat_exceptions_time, obsolete: 'This is no longer required'
   config :idle_flush_time, obsolete: 'No longer necessary under Logstash v5'
+  
+  # Allows the whole event to be converted to JSON
+  config :enable_event_as_json_keyword, validate: :boolean, default: false
+  
+  # The magic key used to convert the whole event to JSON. If you need this, and you have the default in your events, you can use this to change your magic keyword.
+  config :event_as_json_keyword, validate: :string, default: '@event'
 
   def register
     @logger.info('JDBC - Starting up')
@@ -201,7 +208,7 @@ class LogStash::Outputs::Jdbc < LogStash::Outputs::Base
     begin
       connection = @pool.getConnection
     rescue => e
-      log_jdbc_exception(e, true)
+      log_jdbc_exception(e, true, nil)
       # If a connection is not available, then the server has gone away
       # We're not counting that towards our retry count.
       return events, false
@@ -215,7 +222,7 @@ class LogStash::Outputs::Jdbc < LogStash::Outputs::Base
         statement = add_statement_event_params(statement, event) if @statement.length > 1
         statement.execute
       rescue => e
-        if retry_exception?(e)
+        if retry_exception?(e, event.to_json())
           events_to_retry.push(event)
         end
       ensure
@@ -262,7 +269,9 @@ class LogStash::Outputs::Jdbc < LogStash::Outputs::Base
 
   def add_statement_event_params(statement, event)
     @statement[1..-1].each_with_index do |i, idx|
-      if i.is_a? String 
+      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)
         if value.nil? and i =~ /%\{/
           value = event.sprintf(i)
@@ -290,6 +299,9 @@ class LogStash::Outputs::Jdbc < LogStash::Outputs::Base
         else
           statement.setInt(idx + 1, value)
         end
+      when BigDecimal
+        # 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
@@ -306,20 +318,23 @@ class LogStash::Outputs::Jdbc < LogStash::Outputs::Base
     statement
   end
 
-  def retry_exception?(exception)
+  def retry_exception?(exception, event)
     retrying = (exception.respond_to? 'getSQLState' and (RETRYABLE_SQLSTATE_CLASSES.include?(exception.getSQLState.to_s[0,2]) or @retry_sql_states.include?(exception.getSQLState)))
-    log_jdbc_exception(exception, retrying)
+    log_jdbc_exception(exception, retrying, event)
 
     retrying
   end
 
-  def log_jdbc_exception(exception, retrying)
+  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') 
+    
     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()

logstash-output-jdbc.gemspec

@@ -1,6 +1,6 @@
 Gem::Specification.new do |s|
   s.name = 'logstash-output-jdbc'
-  s.version = '5.2.0'
+  s.version = '5.3.0'
   s.licenses = ['Apache License (2.0)']
   s.summary = 'This plugin allows you to output to SQL, via JDBC'
   s.description = "This gem is a logstash plugin required to be installed on top of the Logstash core pipeline using $LS_HOME/bin/logstash-plugin install 'logstash-output-jdbc'. This gem is not a stand-alone program"
@@ -26,13 +26,13 @@ Gem::Specification.new do |s|
   s.add_runtime_dependency 'stud'
   s.add_runtime_dependency 'logstash-codec-plain'
 
-  s.requirements << "jar 'com.zaxxer:HikariCP', '2.6.1'"
+  s.requirements << "jar 'com.zaxxer:HikariCP', '2.7.2'"
   s.requirements << "jar 'org.apache.logging.log4j:log4j-slf4j-impl', '2.6.2'"
 
   s.add_development_dependency 'jar-dependencies'
   s.add_development_dependency 'ruby-maven', '~> 3.3'
 
-  s.add_development_dependency 'logstash-devutils'
+  s.add_development_dependency "logstash-devutils", "~> 1.3", ">= 1.3.1"
 
   s.add_development_dependency 'rubocop', '0.41.2'
 end

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
-echo "create database logstash_output_jdbc_test;" | mysql -u root
+sudo apt-get install mysql-server postgresql-client postgresql -qq -y
+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)
@@ -58,28 +60,57 @@ 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: "decimal",       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)"
+    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) values(?, ?, ?, ?, ?, ?)", '@timestamp', 'message', 'sprintf-%{message}', 1, true, 4000881632477184]
+    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
-    { message: "test-message #{SecureRandom.uuid}" }
+  let(:event) do
+    # 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)
-    
+
     # XXX: Suppress reflection logging. There has to be a better way around this.
     allow(logger).to receive(:debug).with(/config LogStash::/)
 
@@ -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
 
@@ -155,12 +201,12 @@ RSpec.shared_context 'when outputting messages' do
     # Start a thread to restart the service after the fact.
     t = Thread.new(systemd_database_service) { |systemd_database_service|
       sleep 20
-    
+
       start_service(systemd_database_service)
     }
 
     t.run
-    
+
     expect(logger).to receive(:warn).at_least(:once).with(/JDBC - Exception. Retrying/, Hash)
     expect { p.multi_receive([event]) }.to_not raise_error
 

spec/outputs/jdbc_derby_spec.rb

@@ -2,17 +2,25 @@ 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
-    "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)"
+  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.apache.derby.jdbc.EmbeddedDriver',

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