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Add parent directory creation 

Also tidied a few other things up (like not needing
SmartApplicationListener).

Fixes gh-550
This commit is contained in:
Dave Syer 2014-04-11 06:31:17 +01:00
parent f6488c7f66
commit 41cdb7b48d
2 changed files with 88 additions and 60 deletions
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103
spring-boot-actuator/src/main/java/org/springframework/boot/actuate/system/ApplicationPidListener.java
View File

@ -16,30 +16,30 @@
package org.springframework.boot.actuate.system;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.context.event.ApplicationStartedEvent;
import org.springframework.boot.util.SystemUtils;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.event.SmartApplicationListener;
import org.springframework.core.Ordered;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.concurrent.atomic.AtomicBoolean;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.boot.context.event.ApplicationStartedEvent;
import org.springframework.boot.util.SystemUtils;
import org.springframework.context.ApplicationListener;
import org.springframework.core.Ordered;
/**
* An {@link org.springframework.context.ApplicationListener} that saves
* application PID into file
* An {@link org.springframework.context.ApplicationListener} that saves application PID
* into file
*
* @since 1.0.2
*
* @author Jakub Kubrynski
* @author Dave Syer
*/
public class ApplicationPidListener implements SmartApplicationListener {
private static Class<?>[] EVENT_TYPES = {ApplicationStartedEvent.class};
public class ApplicationPidListener implements
ApplicationListener<ApplicationStartedEvent>, Ordered {
private static final String DEFAULT_PID_FILE_NAME = "application.pid";
@ -47,27 +47,24 @@ public class ApplicationPidListener implements SmartApplicationListener {
private int order = Ordered.HIGHEST_PRECEDENCE + 13;
private final Log log = LogFactory.getLog(getClass());
private static final Log logger = LogFactory.getLog(ApplicationPidListener.class);
private String pidFileName = DEFAULT_PID_FILE_NAME;
@Override
public boolean supportsEventType(Class<? extends ApplicationEvent> eventType) {
for (Class<?> type : EVENT_TYPES) {
if (type.isAssignableFrom(eventType)) {
return true;
}
}
return false;
/**
* Sets the pid file name. This file will contain current process id.
*
* @param pidFileName the name of file containing pid
*/
public ApplicationPidListener(String pidFileName) {
this.pidFileName = pidFileName;
}
public ApplicationPidListener() {
}
@Override
public boolean supportsSourceType(Class<?> sourceType) {
return SpringApplication.class.isAssignableFrom(sourceType);
}
@Override
public void onApplicationEvent(ApplicationEvent applicationEvent) {
public void onApplicationEvent(ApplicationStartedEvent event) {
if (pidFileCreated.get()) {
return;
}
@ -75,48 +72,58 @@ public class ApplicationPidListener implements SmartApplicationListener {
String applicationPid;
try {
applicationPid = SystemUtils.getApplicationPid();
} catch (IllegalStateException ignore) {
}
catch (IllegalStateException ignore) {
return;
}
if (pidFileCreated.compareAndSet(false, true)) {
File file = new File(pidFileName);
File file = new File(this.pidFileName);
FileOutputStream fileOutputStream = null;
try {
File parent = file.getParentFile();
if (parent != null) {
parent.mkdirs();
}
fileOutputStream = new FileOutputStream(file);
fileOutputStream.write(applicationPid.getBytes());
} catch (FileNotFoundException e) {
log.warn(String.format("Cannot create pid file %s !", pidFileName));
} catch (IOException e) {
log.warn(String.format("Cannot write to pid file %s!", pidFileName));
} finally {
}
catch (FileNotFoundException e) {
logger.warn(String
.format("Cannot create pid file %s !", this.pidFileName));
}
catch (Exception e) {
logger.warn(String.format("Cannot write to pid file %s!",
this.pidFileName));
}
finally {
if (fileOutputStream != null) {
try {
fileOutputStream.close();
} catch (IOException e) {
log.warn(String.format("Cannot close pid file %s!", pidFileName));
}
catch (IOException e) {
logger.warn(String.format("Cannot close pid file %s!",
this.pidFileName));
}
}
}
}
}
/**
* Allow pid file to be re-written
*/
public static void reset() {
pidFileCreated.set(false);
}
public void setOrder(int order) {
this.order = order;
}
@Override
public int getOrder() {
return order;
}
/**
* Sets the pid file name. This file will contains current process id.
*
* @param pidFileName the name of file containing pid
*/
public void setPidFileName(String pidFileName) {
this.pidFileName = pidFileName;
return this.order;
}
}

45
spring-boot-actuator/src/test/java/org/springframework/boot/actuate/system/ApplicationPidListenerTest.java
View File

@ -16,35 +16,56 @@
package org.springframework.boot.actuate.system;
import java.io.File;
import org.junit.After;
import org.junit.Test;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.context.event.ApplicationStartedEvent;
import java.io.File;
import static org.junit.Assert.assertTrue;
/**
* Created by jkubrynski@gmail.com / 2014-03-25
* @author Jakub Kubrynski
* @author Dave Syer
*/
public class ApplicationPidListenerTest {
private static final String[] NO_ARGS = {};
public static final String PID_FILE_NAME = "test.pid";
@After
public void init() {
ApplicationPidListener.reset();
}
@Test
public void shouldCreatePidFile() {
//given
ApplicationPidListener sut = new ApplicationPidListener();
sut.setPidFileName(PID_FILE_NAME);
// given
String pidFileName = "test.pid";
ApplicationPidListener sut = new ApplicationPidListener(pidFileName);
//when
sut.onApplicationEvent(new ApplicationStartedEvent(
new SpringApplication(), NO_ARGS));
// when
sut.onApplicationEvent(new ApplicationStartedEvent(new SpringApplication(),
NO_ARGS));
//then
File pidFile = new File(PID_FILE_NAME);
// then
File pidFile = new File(pidFileName);
assertTrue(pidFile.exists());
pidFile.delete();
}
@Test
public void shouldCreatePidFileParentDirectory() {
// given
String pidFileName = "target/pid/test.pid";
ApplicationPidListener sut = new ApplicationPidListener(pidFileName);
// when
sut.onApplicationEvent(new ApplicationStartedEvent(new SpringApplication(),
NO_ARGS));
// then
File pidFile = new File(pidFileName);
assertTrue(pidFile.exists());
pidFile.delete();
}