database.driverClassName=org.postgresql.Driver database.url=jdbc:postgresql://127.0.0.1:5432/james database.username=james database.password=*** vendorAdapter.database=POSTGRESQL openjpa.streaming=true
Purchased book list in O'Reilly's 60% off sale
TweetPosted on Thursday May 07, 2015 at 05:34PM in Technology
Total: $170.38 USD
-
SQL and Relational Theory, 2nd Edition
-
CSS Secrets
-
Professional Java EE Design Patterns
-
Java Performance: The Definitive Guide
-
Java 8 Lambdas
-
Java Cookbook, 3rd Edition
-
Learning Java, 4th Edition
-
RESTful Java with JAX-RS 2.0, 2nd Edition
-
Continuous Enterprise Development in Java
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Head First Servlets and JSP, 2nd Edition
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Head First HTML and CSS, 2nd Edition
Configuring Apache James to use PostgreSQL as the backend
TweetPosted on Sunday Apr 19, 2015 at 09:37PM in Technology
UPDATE: I’m running into a strange problem of using PostgreSQL as backend with Thunderbird. I recommend to use an other database as the backend at the moment. http://www.mail-archive.com/server-user%40james.apache.org/msg14715.html
UPDATE2: I created a patch to solve the issue and it seems fine. for detail and download the patch see: https://issues.apache.org/jira/browse/MAILBOX-228
I have been used Apache James with Embedded Derby, but its CPU/IO consumption is increasing day by day. I’m not sure where is the bottleneck but I decided to move to PostgreSQL as its backend anyway.
-
Put JDBC driver (I used
postgresql-9.3-1100.jdbc41.jar
) into$JAMES_HOME/conf/lib
-
Create
james-database.properties
from template, and put it into$JAMES_HOME/conf
as follows -
Restart James instance
-
Create domains, addresses and aliases:
./james-cli.sh -h localhost -p 9999 adddomain example.org ./james-cli.sh -h localhost -p 9999 adduser kyle@example.org *** ./james-cli.sh -p 9999 -h localhost addaddressmapping postmaster example.org kyle@example.org
Note
This guide claims that setting standard_conforming_strings=off
is needed, but I guess this issue may address this problem, so I don’t use this setting at the moment. my James installation is shipped with openjpa-2.2.1.jar
and the issue was fixed in 2.2.0
.
java.util.logging: Programmatic configuration and logging with Java8 lambdas
TweetPosted on Monday Mar 30, 2015 at 06:24PM in Technology
Configuration
We can put configurations in following places (ordered by priority):
-
java.util.logging.config.class
system property. specify FQCN of a class here -
java.util.logging.config.file
system property. specify the path to a property file here -
$JAVA_HOME/lib/logging.properties
file. put JRE-wide configuration here
Use of java.util.logging.config.class
is most flexible. in that way we can simply put a config class under src/test/java
for unit tests. we need to put configuration procedures in the default constructor. an implementation would be something like following:
package testutil; import java.util.logging.*; public class LoggingConfig { public LoggingConfig() { try { // Load a properties file from class path that way can't be achieved with java.util.logging.config.file /* final LogManager logManager = LogManager.getLogManager(); try (final InputStream is = getClass().getResourceAsStream("/logging.properties")) { logManager.readConfiguration(is); } */ // Programmatic configuration System.setProperty("java.util.logging.SimpleFormatter.format", "%1$tY-%1$tm-%1$td %1$tH:%1$tM:%1$tS.%1$tL %4$-7s [%3$s] (%2$s) %5$s %6$s%n"); final ConsoleHandler consoleHandler = new ConsoleHandler(); consoleHandler.setLevel(Level.FINEST); consoleHandler.setFormatter(new SimpleFormatter()); final Logger app = Logger.getLogger("app"); app.setLevel(Level.FINEST); app.addHandler(consoleHandler); } catch (Exception e) { // The runtime won't show stack traces if the exception is thrown e.printStackTrace(); } } }
If you prefer configuration in a property file rather than a config class, following will work as the same to config class:
handlers=java.util.logging.ConsoleHandler java.util.logging.ConsoleHandler.formatter=java.util.logging.SimpleFormatter java.util.logging.SimpleFormatter.format=%1$tY-%1$tm-%1$td %1$tH:%1$tM:%1$tS.%1$tL %4$-7s [%3$s] (%2$s) %5$s %6$s%n java.util.logging.ConsoleHandler.level=FINEST app.level=FINEST
To set system property for every test execution, put following plugin
definition to your pom.xml
. note that IntelliJ IDEA respects this configuration in its test execution.
<plugin> <artifactId>maven-surefire-plugin</artifactId> <version>2.18.1</version> <configuration> <systemPropertyVariables> <java.util.logging.config.class> testutil.LoggingConfig </java.util.logging.config.class> <!-- If you prefer a file this will work too --> <!--<java.util.logging.config.file>--> <!--src/test/resources/logging.properties--> <!--</java.util.logging.config.file>--> </systemPropertyVariables> </configuration> </plugin>
Logging examples
Application class:
public class MyClass { private static final Logger log = Logger.getLogger(MyClass.class.getName()); public String hello(String greetings, String name) { // entering will be logged as FINER log.entering(MyClass.class.getName(), "hello", new Object[]{greetings, name}); // lambdas log.finest(() -> "finest: " + LocalDateTime.now()); log.finer(() -> "finer: " + LocalDateTime.now()); log.fine(() -> "fine: " + LocalDateTime.now()); log.info(() -> "info: " + LocalDateTime.now()); log.warning(() -> "warning: " + LocalDateTime.now()); log.severe(() -> "severe: " + LocalDateTime.now()); // exception logging // throwing will be logged as FINER log.throwing(MyClass.class.getName(), "hello", new Exception("test")); // exception + message logging with lambda log.log(Level.FINEST, new Exception("test"), () -> String.format("arg=%s", name)); // exception + parameter logging with LogRecord final LogRecord record = new LogRecord(Level.FINEST, "arg={0}"); record.setThrown(new Exception("test")); record.setLoggerName(log.getName()); // logger name will be null unless this record.setParameters(new Object[]{name}); log.log(record); final String rc = greetings + ", " + name; // exiting will be logged as FINER log.exiting(MyClass.class.getName(), "hello", rc); return rc; } }
Test:
public class MyClassTest { @org.junit.Test public void testHello() throws Exception { MyClass sut = new MyClass(); Assert.assertEquals("Hello, Kyle", sut.hello("Hello", "Kyle")); } }
Output:
2015-03-30 18:01:19.362 FINER [app.MyClass] (app.MyClass hello) ENTRY Hello Kyle 2015-03-30 18:01:19.425 FINEST [app.MyClass] (app.MyClass hello) finest: 2015-03-30T18:01:19.425 2015-03-30 18:01:19.427 FINER [app.MyClass] (app.MyClass hello) finer: 2015-03-30T18:01:19.427 2015-03-30 18:01:19.428 FINE [app.MyClass] (app.MyClass hello) fine: 2015-03-30T18:01:19.428 2015-03-30 18:01:19.429 INFO [app.MyClass] (app.MyClass hello) info: 2015-03-30T18:01:19.429 2015-03-30 18:01:19.431 WARNING [app.MyClass] (app.MyClass hello) warning: 2015-03-30T18:01:19.430 2015-03-30 18:01:19.433 SEVERE [app.MyClass] (app.MyClass hello) severe: 2015-03-30T18:01:19.433 2015-03-30 18:01:19.434 FINER [app.MyClass] (app.MyClass hello) THROW java.lang.Exception: test at app.MyClass.hello(MyClass.java:27) at app.MyClassTest.testHello(MyClassTest.java:10) ... 2015-03-30 18:01:19.439 FINEST [app.MyClass] (app.MyClass hello) arg=Kyle java.lang.Exception: test at app.MyClass.hello(MyClass.java:30) at app.MyClassTest.testHello(MyClassTest.java:10) ... 2015-03-30 18:01:19.442 FINEST [app.MyClass] (app.MyClass hello) arg=Kyle java.lang.Exception: test at app.MyClass.hello(MyClass.java:34) at app.MyClassTest.testHello(MyClassTest.java:10) ... 2015-03-30 18:01:19.447 FINER [app.MyClass] (app.MyClass hello) RETURN Hello, Kyle
Tags: logging
Modifying persistence.xml to execute drop-and-create dynamically
TweetPosted on Monday Mar 23, 2015 at 03:19PM in JPA
I need that for Arquillian testing so I created an utility method for that.
Tags: arquillian jpa
Enabling RequestDumpingHandler of Undertow
TweetPosted on Friday Mar 20, 2015 at 05:01PM in WildFly
Tested with WildFly 8.2.0.Final. Issue following command via jboss-cli and restart the server:
/subsystem=undertow/configuration=filter/custom-filter=request-dumper:add(class-name=io.undertow.server.handlers.RequestDumpingHandler, module=io.undertow.core) /subsystem=undertow/server=default-server/host=default-host/filter-ref=request-dumper:add
Following log will be dumped to the console:
----------------------------REQUEST--------------------------- URI=/batcheetest/jbatch/batchee/execution/start/myjob characterEncoding=null contentLength=95 contentType=[application/json] header=Accept=*/* header=Content-Type=application/json header=Content-Length=95 header=User-Agent=curl/7.30.0 header=Host=localhost:8080 locale=[] method=POST protocol=HTTP/1.1 queryString= remoteAddr=/127.0.0.1:57668 remoteHost=localhost scheme=http host=localhost:8080 serverPort=8080 --------------------------RESPONSE-------------------------- contentLength=-1 contentType=application/json header=Connection=keep-alive header=X-Powered-By=Undertow/1 header=Server=WildFly/8 header=Transfer-Encoding=chunked header=Content-Type=application/json header=Date=Fri, 20 Mar 2015 07:58:13 GMT status=200 ==============================================================
I’m disappointed that there is no dump of request body :(