X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsone%2Fcore%2FSoneDownloader.java;h=94f2b632219cd7bec49322a8f2f9964d2652dff7;hb=544c75a3b539a2948d08f688e7c367baa3dac28b;hp=4dd634cc32defcd8dd519ce9c5bd198b2c07aeb8;hpb=94041feaf2a141b8c75725301f06d7e4bc617a12;p=Sone.git diff --git a/src/main/java/net/pterodactylus/sone/core/SoneDownloader.java b/src/main/java/net/pterodactylus/sone/core/SoneDownloader.java index 4dd634c..94f2b63 100644 --- a/src/main/java/net/pterodactylus/sone/core/SoneDownloader.java +++ b/src/main/java/net/pterodactylus/sone/core/SoneDownloader.java @@ -19,17 +19,20 @@ package net.pterodactylus.sone.core; import java.io.IOException; import java.io.InputStream; +import java.net.MalformedURLException; import java.util.HashSet; import java.util.Set; import java.util.logging.Level; import java.util.logging.Logger; +import net.pterodactylus.sone.core.Core.SoneStatus; import net.pterodactylus.sone.data.Post; import net.pterodactylus.sone.data.Profile; import net.pterodactylus.sone.data.Reply; import net.pterodactylus.sone.data.Sone; import net.pterodactylus.util.io.Closer; import net.pterodactylus.util.logging.Logging; +import net.pterodactylus.util.number.Numbers; import net.pterodactylus.util.service.AbstractService; import net.pterodactylus.util.xml.SimpleXML; import net.pterodactylus.util.xml.XML; @@ -37,6 +40,7 @@ import net.pterodactylus.util.xml.XML; import org.w3c.dom.Document; import freenet.client.FetchResult; +import freenet.keys.FreenetURI; import freenet.support.api.Bucket; /** @@ -67,7 +71,7 @@ public class SoneDownloader extends AbstractService { * The Freenet interface */ public SoneDownloader(Core core, FreenetInterface freenetInterface) { - super("Sone Downloader"); + super("Sone Downloader", false); this.core = core; this.freenetInterface = freenetInterface; } @@ -89,6 +93,18 @@ public class SoneDownloader extends AbstractService { } /** + * Removes the given Sone from the downloader. + * + * @param sone + * The Sone to stop watching + */ + public void removeSone(Sone sone) { + if (sones.remove(sone)) { + freenetInterface.unregisterUsk(sone); + } + } + + /** * Fetches the updated Sone. This method is a callback method for * {@link FreenetInterface#registerUsk(Sone, SoneDownloader)}. * @@ -96,86 +112,186 @@ public class SoneDownloader extends AbstractService { * The Sone to fetch */ public void fetchSone(Sone sone) { + if (core.getSoneStatus(sone) == SoneStatus.downloading) { + return; + } logger.log(Level.FINE, "Starting fetch for Sone “%s” from %s…", new Object[] { sone, sone.getRequestUri().setMetaString(new String[] { "sone.xml" }) }); - FetchResult fetchResult = freenetInterface.fetchUri(sone.getRequestUri().setMetaString(new String[] { "sone.xml" })); - logger.log(Level.FINEST, "Got %d bytes back.", fetchResult.size()); - updateSoneFromXml(sone, fetchResult); + FreenetURI requestUri = sone.getRequestUri().setMetaString(new String[] { "sone.xml" }); + core.setSoneStatus(sone, SoneStatus.downloading); + try { + FetchResult fetchResult = freenetInterface.fetchUri(requestUri); + if (fetchResult == null) { + /* TODO - mark Sone as bad. */ + return; + } + logger.log(Level.FINEST, "Got %d bytes back.", fetchResult.size()); + Sone parsedSone = parseSone(sone, fetchResult, requestUri); + if (parsedSone != null) { + core.addSone(parsedSone); + } + } finally { + core.setSoneStatus(sone, (sone.getTime() == 0) ? SoneStatus.unknown : SoneStatus.idle); + } } - // - // SERVICE METHODS - // - /** - * {@inheritDoc} + * Parses a Sone from a fetch result. + * + * @param originalSone + * The sone to parse, or {@code null} if the Sone is yet unknown + * @param fetchResult + * The fetch result + * @param requestUri + * The requested URI + * @return The parsed Sone, or {@code null} if the Sone could not be parsed */ - @Override - protected void serviceStop() { - for (Sone sone : sones) { - freenetInterface.unregisterUsk(sone); + public Sone parseSone(Sone originalSone, FetchResult fetchResult, FreenetURI requestUri) { + logger.log(Level.FINEST, "Persing FetchResult (%d bytes, %s) for %s…", new Object[] { fetchResult.size(), fetchResult.getMimeType(), originalSone }); + Bucket soneBucket = fetchResult.asBucket(); + InputStream soneInputStream = null; + try { + soneInputStream = soneBucket.getInputStream(); + Sone parsedSone = parseSone(originalSone, soneInputStream); + if (parsedSone != null) { + parsedSone.setRequestUri(requestUri.setMetaString(new String[0])); + } + return parsedSone; + } catch (IOException ioe1) { + logger.log(Level.WARNING, "Could not parse Sone from " + requestUri + "!", ioe1); + } finally { + Closer.close(soneInputStream); + soneBucket.free(); } + return null; } - // - // PRIVATE METHODS - // + /** + * Parses a Sone from the given input stream. + * + * @param soneInputStream + * The input stream to parse the Sone from + * @return The parsed Sone + */ + public Sone parseSone(InputStream soneInputStream) { + return parseSone(null, soneInputStream); + } /** - * Updates the contents of the given Sone from the given fetch result. + * Parses a Sone from the given input stream and updates the given Sone, or + * creates a new Sone. * - * @param sone - * The Sone to update - * @param fetchResult - * The fetch result + * @param originalSone + * The Sone to update (may be {@code null}) + * @param soneInputStream + * The input stream to parse the Sone from + * @return The parsed Sone */ - private void updateSoneFromXml(Sone sone, FetchResult fetchResult) { - logger.log(Level.FINEST, "Persing FetchResult (%d bytes, %s) for %s…", new Object[] { fetchResult.size(), fetchResult.getMimeType(), sone }); + public Sone parseSone(Sone originalSone, InputStream soneInputStream) { /* TODO - impose a size limit? */ - InputStream xmlInputStream = null; - Bucket xmlBucket = null; + Sone sone; + + Document document; + /* XML parsing is not thread-safe. */ + synchronized (this) { + document = XML.transformToDocument(soneInputStream); + } + if (document == null) { + /* TODO - mark Sone as bad. */ + logger.log(Level.WARNING, "Could not parse XML for Sone %s!", new Object[] { originalSone }); + return null; + } + SimpleXML soneXml; try { - xmlBucket = fetchResult.asBucket(); - xmlInputStream = xmlBucket.getInputStream(); - Document document = XML.transformToDocument(xmlInputStream); - SimpleXML soneXml = SimpleXML.fromDocument(document); - - /* check ID. */ - String soneId = soneXml.getValue("id", null); - if (!sone.getId().equals(soneId)) { - /* TODO - mark Sone as bad. */ - logger.log(Level.WARNING, "Downloaded ID for Sone %s (%s) does not match known ID (%s)!", new Object[] { sone, sone.getId(), soneId }); - return; - } + soneXml = SimpleXML.fromDocument(document); + } catch (NullPointerException npe1) { + /* for some reason, invalid XML can cause NPEs. */ + logger.log(Level.WARNING, "XML for Sone " + originalSone + " can not be parsed!", npe1); + return null; + } + + /* check ID. */ + String soneId = soneXml.getValue("id", null); + if ((originalSone != null) && !originalSone.getId().equals(soneId)) { + /* TODO - mark Sone as bad. */ + logger.log(Level.WARNING, "Downloaded ID for Sone %s (%s) does not match known ID (%s)!", new Object[] { originalSone, originalSone.getId(), soneId }); + return null; + } + + /* load Sone from core. */ + sone = originalSone; + if (sone == null) { + sone = core.getSone(soneId); + } + + String soneName = soneXml.getValue("name", null); + if (soneName == null) { + /* TODO - mark Sone as bad. */ + logger.log(Level.WARNING, "Downloaded name for Sone %s was null!", new Object[] { sone }); + return null; + } + sone.setName(soneName); + + String soneTime = soneXml.getValue("time", null); + if (soneTime == null) { + /* TODO - mark Sone as bad. */ + logger.log(Level.WARNING, "Downloaded time for Sone %s was null!", new Object[] { sone }); + return null; + } + try { + sone.setTime(Long.parseLong(soneTime)); + } catch (NumberFormatException nfe1) { + /* TODO - mark Sone as bad. */ + logger.log(Level.WARNING, "Downloaded Sone %s with invalid time: %s", new Object[] { sone, soneTime }); + return null; + } - String soneName = soneXml.getValue("name", null); - if (soneName == null) { + String soneRequestUri = soneXml.getValue("request-uri", null); + if (soneRequestUri != null) { + try { + sone.setRequestUri(new FreenetURI(soneRequestUri)); + } catch (MalformedURLException mue1) { /* TODO - mark Sone as bad. */ - logger.log(Level.WARNING, "Downloaded name for Sone %s was null!", new Object[] { sone }); - return; + logger.log(Level.WARNING, "Downloaded Sone " + sone + " has invalid request URI: " + soneRequestUri, mue1); + return null; } + } - SimpleXML profileXml = soneXml.getNode("profile"); - if (profileXml == null) { + String soneInsertUri = soneXml.getValue("insert-uri", null); + if ((soneInsertUri != null) && (sone.getInsertUri() == null)) { + try { + sone.setInsertUri(new FreenetURI(soneInsertUri)); + sone.updateUris(Math.max(sone.getRequestUri().getSuggestedEdition(), sone.getInsertUri().getSuggestedEdition())); + } catch (MalformedURLException mue1) { /* TODO - mark Sone as bad. */ - logger.log(Level.WARNING, "Downloaded Sone %s has no profile!", new Object[] { sone }); - return; + logger.log(Level.WARNING, "Downloaded Sone " + sone + " has invalid insert URI: " + soneInsertUri, mue1); + return null; } + } - /* parse profile. */ - String profileFirstName = profileXml.getValue("first-name", null); - String profileMiddleName = profileXml.getValue("middle-name", null); - String profileLastName = profileXml.getValue("last-name", null); - Profile profile = new Profile().setFirstName(profileFirstName).setMiddleName(profileMiddleName).setLastName(profileLastName); + SimpleXML profileXml = soneXml.getNode("profile"); + if (profileXml == null) { + /* TODO - mark Sone as bad. */ + logger.log(Level.WARNING, "Downloaded Sone %s has no profile!", new Object[] { sone }); + return null; + } - /* parse posts. */ - SimpleXML postsXml = soneXml.getNode("posts"); - if (postsXml == null) { - /* TODO - mark Sone as bad. */ - logger.log(Level.WARNING, "Downloaded Sone %s has no posts!", new Object[] { sone }); - return; - } + /* parse profile. */ + String profileFirstName = profileXml.getValue("first-name", null); + String profileMiddleName = profileXml.getValue("middle-name", null); + String profileLastName = profileXml.getValue("last-name", null); + Integer profileBirthDay = Numbers.safeParseInteger(profileXml.getValue("birth-day", null)); + Integer profileBirthMonth = Numbers.safeParseInteger(profileXml.getValue("birth-month", null)); + Integer profileBirthYear = Numbers.safeParseInteger(profileXml.getValue("birth-year", null)); + Profile profile = new Profile().setFirstName(profileFirstName).setMiddleName(profileMiddleName).setLastName(profileLastName); + profile.setBirthDay(profileBirthDay).setBirthMonth(profileBirthMonth).setBirthYear(profileBirthYear); - Set posts = new HashSet(); + /* parse posts. */ + SimpleXML postsXml = soneXml.getNode("posts"); + Set posts = new HashSet(); + if (postsXml == null) { + /* TODO - mark Sone as bad. */ + logger.log(Level.WARNING, "Downloaded Sone %s has no posts!", new Object[] { sone }); + } else { for (SimpleXML postXml : postsXml.getNodes("post")) { String postId = postXml.getValue("id", null); String postTime = postXml.getValue("time", null); @@ -183,26 +299,25 @@ public class SoneDownloader extends AbstractService { if ((postId == null) || (postTime == null) || (postText == null)) { /* TODO - mark Sone as bad. */ logger.log(Level.WARNING, "Downloaded post for Sone %s with missing data! ID: %s, Time: %s, Text: %s", new Object[] { sone, postId, postTime, postText }); - return; + return null; } try { posts.add(core.getPost(postId).setSone(sone).setTime(Long.parseLong(postTime)).setText(postText)); } catch (NumberFormatException nfe1) { /* TODO - mark Sone as bad. */ logger.log(Level.WARNING, "Downloaded post for Sone %s with invalid time: %s", new Object[] { sone, postTime }); - return; + return null; } } + } - /* parse replies. */ - SimpleXML repliesXml = soneXml.getNode("replies"); - if (repliesXml == null) { - /* TODO - mark Sone as bad. */ - logger.log(Level.WARNING, "Downloaded Sone %s has no replies!", new Object[] { sone }); - return; - } - - Set replies = new HashSet(); + /* parse replies. */ + SimpleXML repliesXml = soneXml.getNode("replies"); + Set replies = new HashSet(); + if (repliesXml == null) { + /* TODO - mark Sone as bad. */ + logger.log(Level.WARNING, "Downloaded Sone %s has no replies!", new Object[] { sone }); + } else { for (SimpleXML replyXml : repliesXml.getNodes("reply")) { String replyId = replyXml.getValue("id", null); String replyPostId = replyXml.getValue("post-id", null); @@ -211,29 +326,98 @@ public class SoneDownloader extends AbstractService { if ((replyId == null) || (replyPostId == null) || (replyTime == null) || (replyText == null)) { /* TODO - mark Sone as bad. */ logger.log(Level.WARNING, "Downloaded reply for Sone %s with missing data! ID: %s, Post: %s, Time: %s, Text: %s", new Object[] { sone, replyId, replyPostId, replyTime, replyText }); - return; + return null; } try { replies.add(core.getReply(replyId).setSone(sone).setPost(core.getPost(replyPostId)).setTime(Long.parseLong(replyTime)).setText(replyText)); } catch (NumberFormatException nfe1) { /* TODO - mark Sone as bad. */ logger.log(Level.WARNING, "Downloaded reply for Sone %s with invalid time: %s", new Object[] { sone, replyTime }); - return; + return null; } } + } - /* okay, apparently everything was parsed correctly. Now import. */ - /* atomic setter operation on the Sone. */ - synchronized (sone) { - sone.setProfile(profile); + /* parse liked post IDs. */ + SimpleXML likePostIdsXml = soneXml.getNode("post-likes"); + Set likedPostIds = new HashSet(); + if (likePostIdsXml == null) { + /* TODO - mark Sone as bad. */ + logger.log(Level.WARNING, "Downloaded Sone %s has no post likes!", new Object[] { sone }); + } else { + for (SimpleXML likedPostIdXml : likePostIdsXml.getNodes("post-like")) { + String postId = likedPostIdXml.getValue(); + likedPostIds.add(postId); } - } catch (IOException ioe1) { - logger.log(Level.WARNING, "Could not read XML file from " + sone + "!", ioe1); - } finally { - if (xmlBucket != null) { - xmlBucket.free(); + } + + /* parse liked reply IDs. */ + SimpleXML likeReplyIdsXml = soneXml.getNode("reply-likes"); + Set likedReplyIds = new HashSet(); + if (likeReplyIdsXml == null) { + /* TODO - mark Sone as bad. */ + logger.log(Level.WARNING, "Downloaded Sone %s has no reply likes!", new Object[] { sone }); + } else { + for (SimpleXML likedReplyIdXml : likeReplyIdsXml.getNodes("reply-like")) { + String replyId = likedReplyIdXml.getValue(); + likedReplyIds.add(replyId); } - Closer.close(xmlInputStream); + } + + /* parse known Sones. */ + SimpleXML knownSonesXml = soneXml.getNode("known-sones"); + Set knownSones = new HashSet(); + if (knownSonesXml == null) { + /* TODO - mark Sone as bad. */ + logger.log(Level.WARNING, "Downloaded Sone %s has no known Sones!", new Object[] { sone }); + } else { + for (SimpleXML knownSoneXml : knownSonesXml.getNodes("known-sone")) { + String knownSoneId = knownSoneXml.getValue("sone-id", null); + String knownSoneKey = knownSoneXml.getValue("sone-key", null); + String knownSoneName = knownSoneXml.getValue("sone-name", null); + if ((knownSoneId == null) || (knownSoneKey == null) || (knownSoneName == null)) { + /* TODO - mark Sone as bad. */ + logger.log(Level.WARNING, "Downloaded known Sone for Sone %s with missing data! ID: %s, Key: %s, Name: %s", new Object[] { sone, knownSoneId, knownSoneKey, knownSoneName }); + return null; + } + try { + knownSones.add(core.getSone(knownSoneId).setRequestUri(new FreenetURI(knownSoneKey)).setName(knownSoneName)); + } catch (MalformedURLException mue1) { + /* TODO - mark Sone as bad. */ + logger.log(Level.WARNING, "Downloaded known Sone for Sone %s with invalid key: %s", new Object[] { sone, knownSoneKey }); + return null; + } + } + } + + /* okay, apparently everything was parsed correctly. Now import. */ + /* atomic setter operation on the Sone. */ + synchronized (sone) { + sone.setProfile(profile); + sone.setPosts(posts); + sone.setReplies(replies); + sone.setLikePostIds(likedPostIds); + sone.setModificationCounter(0); + } + + /* add all known Sones to core for downloading. */ + for (Sone knownSone : knownSones) { + core.addSone(knownSone); + } + return sone; + } + + // + // SERVICE METHODS + // + + /** + * {@inheritDoc} + */ + @Override + protected void serviceStop() { + for (Sone sone : sones) { + freenetInterface.unregisterUsk(sone); } }