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ScriptFileWatcher fixes for entire directories (#3185)

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* handle entire directories being moved in and out of a watched script path
* ensure sorted scripts when ScriptFileWatcher restarts or new directories are added

Signed-off-by: Cody Cutrer <cody@cutrer.us>
This commit is contained in:
Cody Cutrer 2022-12-06 11:01:49 -07:00 committed by GitHub
parent e90811cfd7
commit ac7378d1bb
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2 changed files with 109 additions and 22 deletions
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66
bundles/org.openhab.core.automation.module.script.rulesupport/src/main/java/org/openhab/core/automation/module/script/rulesupport/loader/AbstractScriptFileWatcher.java
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@ -24,9 +24,11 @@ import java.nio.charset.StandardCharsets;
import java.nio.file.Path;
import java.nio.file.WatchEvent;
import java.nio.file.WatchEvent.Kind;
import java.util.Collection;
import java.util.List;
import java.util.Optional;
import java.util.Set;
import java.util.TreeSet;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
@ -138,41 +140,52 @@ public abstract class AbstractScriptFileWatcher extends AbstractWatchService imp
if (rootDirectory.exists()) {
File[] files = rootDirectory.listFiles();
if (files != null) {
Collection<ScriptFileReference> resources = new TreeSet<>();
for (File f : files) {
if (!f.isHidden()) {
importResources(f);
resources.addAll(collectResources(f));
}
}
resources.forEach(this::importFileWhenReady);
}
}
}
/**
* Imports resources from the specified file or directory.
* Collects all resources from the specified file or directory,
* possibly including subdirectories.
*
* The results will be sorted.
*
* @param file the file or directory to import resources from
*/
private void importResources(File file) {
if (file.exists()) {
File[] files = file.listFiles();
if (files != null) {
if (watchSubDirectories()) {
private Collection<ScriptFileReference> collectResources(File file) {
Collection<ScriptFileReference> resources = new TreeSet<>();
if (!file.exists()) {
return resources;
}
if (file.isDirectory()) {
if (watchSubDirectories()) {
File[] files = file.listFiles();
if (files != null) {
for (File f : files) {
if (!f.isHidden()) {
importResources(f);
resources.addAll(collectResources(f));
}
}
}
} else {
try {
URL url = file.toURI().toURL();
importFileWhenReady(new ScriptFileReference(url));
} catch (MalformedURLException e) {
// can't happen for the 'file' protocol handler with a correctly formatted URI
logger.debug("Can't create a URL", e);
}
}
} else {
try {
URL url = file.toURI().toURL();
resources.add(new ScriptFileReference(url));
} catch (MalformedURLException e) {
// can't happen for the 'file' protocol handler with a correctly formatted URI
logger.debug("Can't create a URL", e);
}
}
return resources;
}
@Override
@ -190,13 +203,24 @@ public abstract class AbstractScriptFileWatcher extends AbstractWatchService imp
File file = path.toFile();
if (!file.isHidden()) {
try {
URL fileUrl = file.toURI().toURL();
if (ENTRY_DELETE.equals(kind)) {
removeFile(new ScriptFileReference(fileUrl));
if (file.isDirectory()) {
if (watchSubDirectories()) {
synchronized (this) {
String prefix = file.toString() + File.separator;
var toRemove = loaded.stream()
.filter(f -> f.getScriptFileURL().getFile().startsWith(prefix))
.collect(Collectors.toList());
toRemove.forEach(this::removeFile);
}
}
} else {
removeFile(new ScriptFileReference(file.toURI().toURL()));
}
}
if (file.canRead() && (ENTRY_CREATE.equals(kind) || ENTRY_MODIFY.equals(kind))) {
importFileWhenReady(new ScriptFileReference(fileUrl));
collectResources(file).forEach(this::importFileWhenReady);
}
} catch (MalformedURLException e) {
logger.error("malformed", e);
@ -289,9 +313,7 @@ public abstract class AbstractScriptFileWatcher extends AbstractWatchService imp
pending.removeAll(newlySupported);
}
for (ScriptFileReference ref : newlySupported) {
importFileWhenReady(ref);
}
newlySupported.forEach(this::importFileWhenReady);
}
private synchronized void onStartLevelChanged(int newLevel) {

65
bundles/org.openhab.core.automation.module.script.rulesupport/src/test/java/org/openhab/core/automation/module/script/rulesupport/loader/AbstractScriptFileWatcherTest.java
View File

@ -363,4 +363,69 @@ class AbstractScriptFileWatcherTest {
verify(scriptEngineManagerMock, timeout(10000).times(2)).createScriptEngine("js",
p.toFile().toURI().toString());
}
@Test
public void testDirectoryAdded() {
when(scriptEngineManagerMock.isSupported("js")).thenReturn(true);
ScriptEngineContainer scriptEngineContainer = mock(ScriptEngineContainer.class);
when(scriptEngineContainer.getScriptEngine()).thenReturn(mock(ScriptEngine.class));
when(scriptEngineManagerMock.createScriptEngine(anyString(), anyString())).thenReturn(scriptEngineContainer);
updateStartLevel(100);
Path p1 = getFile("dir/script.js");
Path p2 = getFile("dir/script2.js");
Path d = p1.getParent();
scriptFileWatcher.processWatchEvent(null, ENTRY_CREATE, d);
verify(scriptEngineManagerMock, timeout(10000)).createScriptEngine("js", p1.toFile().toURI().toString());
verify(scriptEngineManagerMock, timeout(10000)).createScriptEngine("js", p2.toFile().toURI().toString());
}
@Test
public void testSortsAllFilesInNewDirectory() {
when(scriptEngineManagerMock.isSupported("js")).thenReturn(true);
ScriptEngineContainer scriptEngineContainer = mock(ScriptEngineContainer.class);
when(scriptEngineContainer.getScriptEngine()).thenReturn(mock(ScriptEngine.class));
when(scriptEngineManagerMock.createScriptEngine(anyString(), anyString())).thenReturn(scriptEngineContainer);
updateStartLevel(100);
Path p20 = getFile("dir/script.sl20.js");
Path p10 = getFile("dir/script2.sl10.js");
Path d = p10.getParent();
scriptFileWatcher.processWatchEvent(null, ENTRY_CREATE, d);
InOrder inOrder = inOrder(scriptEngineManagerMock);
inOrder.verify(scriptEngineManagerMock, timeout(10000).times(1)).createScriptEngine("js",
p10.toFile().toURI().toString());
inOrder.verify(scriptEngineManagerMock, timeout(10000).times(1)).createScriptEngine("js",
p20.toFile().toURI().toString());
}
@Test
public void testDirectoryRemoved() {
when(scriptEngineManagerMock.isSupported("js")).thenReturn(true);
ScriptEngineContainer scriptEngineContainer = mock(ScriptEngineContainer.class);
when(scriptEngineContainer.getScriptEngine()).thenReturn(mock(ScriptEngine.class));
when(scriptEngineManagerMock.createScriptEngine(anyString(), anyString())).thenReturn(scriptEngineContainer);
updateStartLevel(100);
Path p1 = getFile("dir/script.js");
Path p2 = getFile("dir/script2.js");
Path d = p1.getParent();
scriptFileWatcher.processWatchEvent(null, ENTRY_CREATE, p1);
scriptFileWatcher.processWatchEvent(null, ENTRY_CREATE, p2);
scriptFileWatcher.processWatchEvent(null, ENTRY_DELETE, d);
verify(scriptEngineManagerMock, timeout(10000)).createScriptEngine("js", p1.toFile().toURI().toString());
verify(scriptEngineManagerMock, timeout(10000)).createScriptEngine("js", p2.toFile().toURI().toString());
verify(scriptEngineManagerMock, timeout(10000)).removeEngine(p1.toFile().toURI().toString());
verify(scriptEngineManagerMock, timeout(10000)).removeEngine(p2.toFile().toURI().toString());
}
}