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/* Copyright 2013--2018 The Tor Project
* See LICENSE for licensing information */
package org.torproject.onionoo.updater;
import org.torproject.descriptor.Descriptor;
import org.torproject.descriptor.DescriptorCollector;
import org.torproject.onionoo.util.FormattingUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
public class DescriptorSource {
private static final Logger log = LoggerFactory.getLogger(
DescriptorSource.class);
private final String[] collecTorHosts = new String[] {
"collector.torproject.org", "collector2.torproject.org" };
private final File inDir = new File("in");
private final File inArchiveDir = new File(inDir, "archive");
private final File statusDir = new File("status");
private List<DescriptorQueue> descriptorQueues;
private DescriptorQueue archiveDescriptorQueue;
/** Instantiates a new descriptor source. */
public DescriptorSource() {
this.descriptorQueues = new ArrayList<>();
this.descriptorListeners = new HashMap<>();
}
private List<DescriptorQueue> getDescriptorQueues(
DescriptorType descriptorType,
DescriptorHistory descriptorHistory) {
List<DescriptorQueue> descriptorQueues = new ArrayList<>();
for (String collecTorHost : this.collecTorHosts) {
File inRecentDir = new File(inDir, collecTorHost + "/recent");
File historiesDir = new File(this.statusDir, collecTorHost);
DescriptorQueue descriptorQueue = new DescriptorQueue(
inRecentDir, descriptorType, historiesDir);
if (descriptorHistory != null) {
descriptorQueue.readHistoryFile(descriptorHistory);
}
descriptorQueues.add(descriptorQueue);
this.descriptorQueues.add(descriptorQueue);
}
return descriptorQueues;
}
private Map<DescriptorType, Set<DescriptorListener>>
descriptorListeners;
/** Registers a descriptor listener for a given descriptor type. */
public void registerDescriptorListener(DescriptorListener listener,
DescriptorType descriptorType) {
if (!this.descriptorListeners.containsKey(descriptorType)) {
this.descriptorListeners.put(descriptorType,
new HashSet<DescriptorListener>());
}
this.descriptorListeners.get(descriptorType).add(listener);
}
/** Downloads descriptors from CollecTor. */
public void downloadDescriptors() {
List<String> remoteDirectoriesList = new ArrayList<>();
for (DescriptorType descriptorType : DescriptorType.values()) {
remoteDirectoriesList.add("/recent/" + descriptorType.getDir());
}
for (String collecTorHost : this.collecTorHosts) {
String collecTorBaseUrl = "https://" + collecTorHost;
String[] remoteDirectories = remoteDirectoriesList.toArray(new String[0]);
long minLastModified = 0L;
File localDirectory = new File(inDir, collecTorHost);
boolean deleteExtraneousLocalFiles = true;
DescriptorCollector dc = org.torproject.descriptor.DescriptorSourceFactory
.createDescriptorCollector();
dc.collectDescriptors(collecTorBaseUrl, remoteDirectories,
minLastModified, localDirectory, deleteExtraneousLocalFiles);
}
}
/** Reads archived and recent descriptors from disk and feeds them into
* any registered listeners. */
public void readDescriptors() {
this.readArchivedDescriptors();
log.debug("Reading recent {} ...", DescriptorType.RELAY_SERVER_DESCRIPTORS);
this.readDescriptors(DescriptorType.RELAY_SERVER_DESCRIPTORS,
DescriptorHistory.RELAY_SERVER_HISTORY, true);
log.debug("Reading recent {} ...", DescriptorType.RELAY_EXTRA_INFOS);
this.readDescriptors(DescriptorType.RELAY_EXTRA_INFOS,
DescriptorHistory.RELAY_EXTRAINFO_HISTORY, true);
log.debug("Reading recent {} ...", DescriptorType.EXIT_LISTS);
this.readDescriptors(DescriptorType.EXIT_LISTS,
DescriptorHistory.EXIT_LIST_HISTORY, true);
log.debug("Reading recent {} ...", DescriptorType.RELAY_CONSENSUSES);
this.readDescriptors(DescriptorType.RELAY_CONSENSUSES,
DescriptorHistory.RELAY_CONSENSUS_HISTORY, true);
log.debug("Reading recent {} ...",
DescriptorType.BRIDGE_SERVER_DESCRIPTORS);
this.readDescriptors(DescriptorType.BRIDGE_SERVER_DESCRIPTORS,
DescriptorHistory.BRIDGE_SERVER_HISTORY, false);
log.debug("Reading recent {} ...", DescriptorType.BRIDGE_EXTRA_INFOS);
this.readDescriptors(DescriptorType.BRIDGE_EXTRA_INFOS,
DescriptorHistory.BRIDGE_EXTRAINFO_HISTORY, false);
log.debug("Reading recent {} ...", DescriptorType.BRIDGE_STATUSES);
this.readDescriptors(DescriptorType.BRIDGE_STATUSES,
DescriptorHistory.BRIDGE_STATUS_HISTORY, false);
}
private void readDescriptors(DescriptorType descriptorType,
DescriptorHistory descriptorHistory, boolean relay) {
if (!this.descriptorListeners.containsKey(descriptorType)) {
return;
}
Set<DescriptorListener> descriptorListeners =
this.descriptorListeners.get(descriptorType);
for (DescriptorQueue descriptorQueue
: this.getDescriptorQueues(descriptorType, descriptorHistory)) {
Descriptor descriptor;
while ((descriptor = descriptorQueue.nextDescriptor()) != null) {
for (DescriptorListener descriptorListener : descriptorListeners) {
descriptorListener.processDescriptor(descriptor, relay);
}
}
}
log.info("Read recent/{}.", descriptorType.getDir());
}
/** Reads archived descriptors from disk and feeds them into any
* registered listeners. */
public void readArchivedDescriptors() {
if (!this.inArchiveDir.exists()) {
return;
}
log.info("Reading archived descriptors...");
this.archiveDescriptorQueue = new DescriptorQueue(this.inArchiveDir,
null, this.statusDir);
this.archiveDescriptorQueue.readHistoryFile(
DescriptorHistory.ARCHIVED_HISTORY);
Descriptor descriptor;
while ((descriptor = this.archiveDescriptorQueue.nextDescriptor())
!= null) {
DescriptorType descriptorType = null;
boolean relay = false;
for (String annotation : descriptor.getAnnotations()) {
if (annotation.startsWith(
"@type network-status-consensus-3 1.")) {
descriptorType = DescriptorType.RELAY_CONSENSUSES;
relay = true;
} else if (annotation.startsWith("@type server-descriptor 1.")) {
descriptorType = DescriptorType.RELAY_SERVER_DESCRIPTORS;
relay = true;
} else if (annotation.startsWith("@type extra-info 1.")) {
descriptorType = DescriptorType.RELAY_EXTRA_INFOS;
relay = true;
} else if (annotation.startsWith("@type tordnsel 1.")) {
descriptorType = DescriptorType.EXIT_LISTS;
relay = true;
} else if (annotation.startsWith(
"@type bridge-network-status 1.")) {
descriptorType = DescriptorType.BRIDGE_STATUSES;
relay = false;
} else if (annotation.startsWith(
"@type bridge-server-descriptor 1.")) {
descriptorType = DescriptorType.BRIDGE_SERVER_DESCRIPTORS;
relay = false;
} else if (annotation.startsWith("@type bridge-extra-info 1.")) {
descriptorType = DescriptorType.BRIDGE_EXTRA_INFOS;
relay = false;
}
}
if (descriptorType == null) {
log.warn("Unrecognized descriptor in "
+ this.inArchiveDir.getAbsolutePath() + " with annotations "
+ descriptor.getAnnotations() + ". Skipping descriptor.");
continue;
}
for (DescriptorListener descriptorListener :
this.descriptorListeners.get(descriptorType)) {
descriptorListener.processDescriptor(descriptor, relay);
}
}
this.archiveDescriptorQueue.writeHistoryFile();
log.info("Read archived descriptors");
}
/** Writes parse histories for recent descriptors to disk. */
public void writeHistoryFiles() {
log.debug("Writing parse histories for recent descriptors...");
for (DescriptorQueue descriptorQueue : this.descriptorQueues) {
descriptorQueue.writeHistoryFile();
}
}
/** Returns a string with statistics on the number of processed
* descriptors during the current execution. */
public String getStatsString() {
StringBuilder sb = new StringBuilder();
sb.append(" ").append(this.descriptorQueues.size())
.append(" descriptor ").append("queues created for recent descriptors\n");
int historySizeBefore = 0;
int historySizeAfter = 0;
long descriptors = 0L;
long bytes = 0L;
for (DescriptorQueue descriptorQueue : this.descriptorQueues) {
historySizeBefore += descriptorQueue.getHistorySizeBefore();
historySizeAfter += descriptorQueue.getHistorySizeAfter();
descriptors += descriptorQueue.getReturnedDescriptors();
bytes += descriptorQueue.getReturnedBytes();
}
sb.append(" ").append(FormattingUtils.formatDecimalNumber(
historySizeBefore)).append(" recent descriptors excluded from this ")
.append("execution\n");
sb.append(" ").append(FormattingUtils.formatDecimalNumber(descriptors))
.append(" recent descriptors provided\n");
sb.append(" ").append(FormattingUtils.formatBytes(bytes))
.append(" of recent descriptors provided\n");
sb.append(" ").append(FormattingUtils.formatDecimalNumber(
historySizeAfter)).append(" recent descriptors excluded from next ")
.append("execution\n");
if (this.archiveDescriptorQueue != null) {
sb.append(" ").append(FormattingUtils.formatDecimalNumber(
this.archiveDescriptorQueue.getReturnedDescriptors()))
.append(" archived descriptors provided\n");
sb.append(" ").append(FormattingUtils.formatBytes(
this.archiveDescriptorQueue.getReturnedBytes())).append(" of ")
.append("archived descriptors provided\n");
}
return sb.toString();
}
}
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