import java.io.File;
import java.io.IOException;
import java.net.URL;
+import java.util.ArrayList;
import java.util.List;
+import java.util.TreeSet;
import be.nikiroo.fanfix.Instance;
import be.nikiroo.fanfix.bundles.UiConfig;
+import be.nikiroo.fanfix.bundles.UiConfigBundle;
import be.nikiroo.fanfix.data.MetaData;
import be.nikiroo.fanfix.data.Story;
+import be.nikiroo.fanfix.output.BasicOutput.OutputType;
import be.nikiroo.utils.Image;
import be.nikiroo.utils.Progress;
* @author niki
*/
public class CacheLibrary extends BasicLibrary {
- private List<MetaData> metas;
+ private List<MetaData> metasReal;
+ private List<MetaData> metasMixed;
+ private Object metasLock = new Object();
+
private BasicLibrary lib;
private LocalLibrary cacheLib;
* the cache directory where to save the files to disk
* @param lib
* the original library to wrap
+ * @param config
+ * the configuration used to know which kind of default
+ * {@link OutputType} to use for images and non-images stories
*/
- public CacheLibrary(File cacheDir, BasicLibrary lib) {
- this.cacheLib = new LocalLibrary(cacheDir, Instance.getUiConfig()
- .getString(UiConfig.GUI_NON_IMAGES_DOCUMENT_TYPE), Instance
- .getUiConfig().getString(UiConfig.GUI_IMAGES_DOCUMENT_TYPE),
- true);
+ public CacheLibrary(File cacheDir, BasicLibrary lib,
+ UiConfigBundle config) {
+ this.cacheLib = new LocalLibrary(cacheDir, //
+ config.getString(UiConfig.GUI_NON_IMAGES_DOCUMENT_TYPE),
+ config.getString(UiConfig.GUI_IMAGES_DOCUMENT_TYPE), true);
this.lib = lib;
}
pg = new Progress();
}
- if (metas == null) {
- metas = lib.getMetas(pg);
- }
+ List<MetaData> copy;
+ synchronized (metasLock) {
+ // We make sure that cached metas have precedence
+ if (metasMixed == null) {
+ if (metasReal == null) {
+ metasReal = lib.getMetas(pg);
+ }
- pg.done();
- return metas;
- }
+ metasMixed = new ArrayList<MetaData>();
+ TreeSet<String> cachedLuids = new TreeSet<String>();
+ for (MetaData cachedMeta : cacheLib.getMetas(null)) {
+ metasMixed.add(cachedMeta);
+ cachedLuids.add(cachedMeta.getLuid());
+ }
+ for (MetaData realMeta : metasReal) {
+ if (!cachedLuids.contains(realMeta.getLuid())) {
+ metasMixed.add(realMeta);
+ }
+ }
+ }
- @Override
- public synchronized MetaData getInfo(String luid) throws IOException {
- MetaData info = cacheLib.getInfo(luid);
- if (info == null) {
- info = lib.getInfo(luid);
+ copy = new ArrayList<MetaData>(metasMixed);
}
- return info;
+ pg.done();
+ return copy;
}
@Override
if (!isCached(luid)) {
try {
cacheLib.imprt(lib, luid, pgImport);
- updateInfo(cacheLib.getInfo(luid));
+ updateMetaCache(metasMixed, cacheLib.getInfo(luid));
pgImport.done();
} catch (IOException e) {
- Instance.getTraceHandler().error(e);
+ Instance.getInstance().getTraceHandler().error(e);
}
pgImport.done();
cacheLib.setAuthorCover(author, getCover(luid));
}
+ /**
+ * Invalidate the {@link Story} cache (when the content has changed, but we
+ * already have it) with the new given meta.
+ * <p>
+ * <b>Make sure to always use {@link MetaData} from the cached library in
+ * priority, here.</b>
+ *
+ * @param meta
+ * the {@link Story} to clear from the cache
+ *
+ * @throws IOException
+ * in case of IOException
+ */
@Override
+ @Deprecated
protected void updateInfo(MetaData meta) throws IOException {
+ throw new IOException(
+ "This method is not supported in a CacheLibrary, please use updateMetaCache");
+ }
+
+ // relplace the meta in Metas by Meta, add it if needed
+ // return TRUE = added
+ private boolean updateMetaCache(List<MetaData> metas, MetaData meta) {
if (meta != null && metas != null) {
- boolean changed = false;
- for (int i = 0; i < metas.size(); i++) {
- if (metas.get(i).getLuid().equals(meta.getLuid())) {
- metas.set(i, meta);
- changed = true;
+ synchronized (metasLock) {
+ boolean changed = false;
+ for (int i = 0; i < metas.size(); i++) {
+ if (metas.get(i).getLuid().equals(meta.getLuid())) {
+ metas.set(i, meta);
+ changed = true;
+ }
}
- }
- if (!changed) {
- metas.add(meta);
+ if (!changed) {
+ metas.add(meta);
+ return true;
+ }
}
}
- cacheLib.updateInfo(meta);
- lib.updateInfo(meta);
+ return false;
}
@Override
protected void invalidateInfo(String luid) {
if (luid == null) {
- metas = null;
- } else if (metas != null) {
- for (int i = 0; i < metas.size(); i++) {
- if (metas.get(i).getLuid().equals(luid)) {
- metas.remove(i--);
- }
+ synchronized (metasLock) {
+ metasReal = null;
+ metasMixed = null;
}
+ } else {
+ invalidateInfo(metasReal, luid);
+ invalidateInfo(metasMixed, luid);
}
cacheLib.invalidateInfo(luid);
lib.invalidateInfo(luid);
}
+ // luid cannot be null
+ private void invalidateInfo(List<MetaData> metas, String luid) {
+ if (metas != null) {
+ synchronized (metasLock) {
+ for (int i = 0; i < metas.size(); i++) {
+ if (metas.get(i).getLuid().equals(luid)) {
+ metas.remove(i--);
+ }
+ }
+ }
+ }
+ }
+
@Override
public synchronized Story save(Story story, String luid, Progress pg)
throws IOException {
pg.addProgress(pgCacheLib, 1);
story = lib.save(story, luid, pgLib);
- story = cacheLib.save(story, story.getMeta().getLuid(), pgCacheLib);
+ updateMetaCache(metasReal, story.getMeta());
- updateInfo(story.getMeta());
+ story = cacheLib.save(story, story.getMeta().getLuid(), pgCacheLib);
+ updateMetaCache(metasMixed, story.getMeta());
return story;
}
meta.setAuthor(newAuthor);
pg.done();
- invalidateInfo(luid);
+ if (isCached(luid)) {
+ updateMetaCache(metasMixed, meta);
+ updateMetaCache(metasReal, lib.getInfo(luid));
+ } else {
+ updateMetaCache(metasReal, meta);
+ }
}
- /**
- * Check if the {@link Story} denoted by this Library UID is present in the
- * cache.
- *
- * @param luid
- * the Library UID
- *
- * @return TRUE if it is
- */
+ @Override
public boolean isCached(String luid) {
try {
return cacheLib.getInfo(luid) != null;
}
}
- /**
- * Clear the {@link Story} from the cache.
- * <p>
- * The next time we try to retrieve the {@link Story}, it may be required to
- * cache it again.
- *
- * @param luid
- * the story to clear
- *
- * @throws IOException
- * in case of I/O error
- */
+ @Override
public void clearFromCache(String luid) throws IOException {
if (isCached(luid)) {
cacheLib.delete(luid);
pg.addProgress(pgCache, 3);
MetaData meta = lib.imprt(url, pgImprt);
- updateInfo(meta);
-
+ updateMetaCache(metasReal, meta);
+ metasMixed = null;
+
clearFromCache(meta.getLuid());
-
+
pg.done();
return meta;
}
// BasicLibrary:
@Override
- protected int getNextId() {
+ protected String getNextId() {
throw new java.lang.InternalError("Should not have been called");
}
git://git.nikiroo.be / nikiroo-utils.git / blobdiff