commit 19572294cf53147693a41cf2cac3916f4bb2a633 Author: Karsten Loesing karsten.loesing@gmx.net Date: Thu Mar 17 13:58:41 2016 +0100

Add new module on disagreement among dirauths. --- .../org/torproject/metrics/collectdescs/Main.java | 1 + modules/disagreement/.gitignore | 2 + modules/disagreement/build.xml | 37 ++ .../org/torproject/metrics/disagreement/Main.java | 618 +++++++++++++++++++++ shared/bin/20-run-disagreement-stats.sh | 5 + shared/bin/99-copy-stats-files.sh | 1 + website/etc/metrics.json | 22 + website/etc/web.xml | 1 + .../metrics/web/research/ResearchStatsServlet.java | 1 + 9 files changed, 688 insertions(+)

diff --git a/modules/collectdescs/src/org/torproject/metrics/collectdescs/Main.java b/modules/collectdescs/src/org/torproject/metrics/collectdescs/Main.java index c95df18..dc6ef82 100644 --- a/modules/collectdescs/src/org/torproject/metrics/collectdescs/Main.java +++ b/modules/collectdescs/src/org/torproject/metrics/collectdescs/Main.java @@ -21,6 +21,7 @@ public class Main { "/recent/relay-descriptors/consensuses/", "/recent/relay-descriptors/extra-infos/", "/recent/relay-descriptors/server-descriptors/", + "/recent/relay-descriptors/votes/", "/recent/torperf/" }, 0L, new File("../../shared/in"), true); } } diff --git a/modules/disagreement/.gitignore b/modules/disagreement/.gitignore new file mode 100644 index 0000000..bb84c80 --- /dev/null +++ b/modules/disagreement/.gitignore @@ -0,0 +1,2 @@ +stats/ + diff --git a/modules/disagreement/build.xml b/modules/disagreement/build.xml new file mode 100644 index 0000000..ce1c022 --- /dev/null +++ b/modules/disagreement/build.xml @@ -0,0 +1,37 @@ +<project default="run" name="disagreement" basedir="."> + + <property name="disagreement-sources" value="src/main/java"/> + <property name="disagreement-classes" value="classes"/> + <path id="classpath"> + <pathelement path="${disagreement-classes}"/> + <fileset dir="../../shared/lib"> + <include name="descriptor-1.1.0.jar"/> + <include name="commons-compress-1.4.1.jar"/> + <include name="xz-1.0.jar"/> + </fileset> + </path> + + <target name="compile"> + <mkdir dir="${disagreement-classes}"/> + <javac destdir="${disagreement-classes}" + srcdir="${disagreement-sources}" + source="1.7" + target="1.7" + debug="true" + deprecation="true" + optimize="false" + failonerror="true" + includeantruntime="false"> + <classpath refid="classpath"/> + </javac> + </target> + + <target name="run" depends="compile"> + <java fork="true" + maxmemory="2g" + classname="org.torproject.metrics.disagreement.Main"> + <classpath refid="classpath"/> + </java> + </target> +</project> + diff --git a/modules/disagreement/src/main/java/org/torproject/metrics/disagreement/Main.java b/modules/disagreement/src/main/java/org/torproject/metrics/disagreement/Main.java new file mode 100644 index 0000000..b612c43 --- /dev/null +++ b/modules/disagreement/src/main/java/org/torproject/metrics/disagreement/Main.java @@ -0,0 +1,618 @@ +package org.torproject.metrics.disagreement; + +import java.io.BufferedReader; +import java.io.BufferedWriter; +import java.io.File; +import java.io.FileReader; +import java.io.FileWriter; +import java.io.IOException; +import java.io.LineNumberReader; +import java.text.DateFormat; +import java.text.SimpleDateFormat; +import java.util.ArrayList; +import java.util.Collections; +import java.util.HashMap; +import java.util.HashSet; +import java.util.Iterator; +import java.util.List; +import java.util.Locale; +import java.util.Map; +import java.util.Set; +import java.util.SortedMap; +import java.util.TimeZone; +import java.util.TreeMap; + +import org.torproject.descriptor.Descriptor; +import org.torproject.descriptor.DescriptorFile; +import org.torproject.descriptor.DescriptorReader; +import org.torproject.descriptor.DescriptorSourceFactory; +import org.torproject.descriptor.NetworkStatusEntry; +import org.torproject.descriptor.RelayNetworkStatusVote; + +/* Read all relay network status votes from the in/ subdirectory with a + * valid-after time of 12:00:00, extract attributes like relay flags or + * bandwidth measurements that the directory authorities assigned to + * relays, and output aggregate statistics on disagreement among the + * directory authorities. + * + * When initializing from descriptor archives, put tarballs in the in/ + * subdirectory, run this code, and then move the tarballs away. + * Otherwise, tarballs will be re-processed in each subsequent execution. + * + * Recent descriptors can stay in the in/ subdirectory and be re-processed + * in each execution. */ +public class Main { + + public static void main(String[] args) throws Exception { + new Main().run(); + } + + public void run() throws Exception { + readResults(); + readDescriptors(); + aggregate(); + writeResults(); + } + + /* We're processing a lot of strings, including authority identities, + * relay fingerprints, and attributes like relay flags. It would be + * wasteful to store more than one instance of these strings in memory. + * We also want to store them as part of long integers below. + * + * That's why we're resolving all strings to integers and keeping maps + * from string to integers. In case of authority identities and relay + * fingerprints we don't need to resolve integers back to strings, but + * in case of attributes we need to put attribute strings into the + * output file, so we're also keeping a list of attribute strings in + * insertion order. */ + private Map<String, Integer> authorityIndexes = + new HashMap<String, Integer>(); + private Map<String, Integer> fingerprintIndexes = + new HashMap<String, Integer>(); + private Map<String, Integer> attributeIndexes = + new HashMap<String, Integer>(); + private List<String> attributeStrings = new ArrayList<String>(); + + public Main() { + + /* Initialize maps from strings to integers and back by adding the + * empty string as 0-th element. This is necessary, because we want + * to be able to treat 0 as special case below. Once we add non-empty + * strings to maps, they'll be indexed starting at 1. */ + this.getAuthorityIndexForString(""); + this.getFingerprintIndexForString(""); + this.getAttributeIndexForString(""); + } + + /* Resolve the given authority string to its authority index, possibly + * after adding it to the mapping if it wasn't contained before. */ + protected int getAuthorityIndexForString(String authorityString) { + return putToMapsAndReturnIndex(this.authorityIndexes, null, + authorityString); + } + + /* Resolve the given fingerprint string to its fingerprint index, + * possibly after adding it to the mapping if it wasn't contained + * before. */ + protected int getFingerprintIndexForString(String fingerprintString) { + return putToMapsAndReturnIndex(this.fingerprintIndexes, null, + fingerprintString); + } + + /* Resolve the given attribute string to its attribute index, possibly + * after adding it to the mapping if it wasn't contained before. */ + protected int getAttributeIndexForString(String attributeString) { + return putToMapsAndReturnIndex(this.attributeIndexes, + this.attributeStrings, attributeString); + } + + /* Resolve the given attribute index to its attribute string, or return + * null if this attribute index doesn't exist. */ + protected String getAttributeStringForIndex(int attributeIndex) { + if (attributeIndex < 0 || attributeIndex >= attributeStrings.size()) { + return null; + } else { + return this.attributeStrings.get(attributeIndex); + } + } + + /* Helper method: Return an index for a given string and possibly put + * the string into the map and corresponding list if it was not + * contained before. */ + protected int putToMapsAndReturnIndex( + Map<String, Integer> stringToIntMap, List<String> strings, + String string) { + Integer index = stringToIntMap.get(string); + if (index == null) { + if (strings != null) { + strings.add(string); + } + stringToIntMap.put(string, stringToIntMap.size()); + } + return stringToIntMap.get(string); + } + + /* The following code is heavily optimized towards low memory usage, + * because we're potentially processing a lot of data, especially when + * initializing from descriptor archives. + * + * We need to be able to store weeks or even months of votes in memory, + * which is really a lot of data. The reason is that we need all votes + * published at the same hour to be present when running aggregations, + * but we cannot rely on the order of incoming votes. That's why we + * have to process votes in two steps: first, we extract everything we + * need from votes and store it in memory, and second, we aggregate what + * we have in memory and output aggregate results. + * + * We're going rather low-level here by converting each attribute that + * an authority assigned to a relay at a certain vote valid-after time + * into a single 64-bit signed long integer. We're doing this by + * subdividing (most of) the available bits into ranges for the + * different parts we want to store. As an added requirement we're + * arranging ranges in a way that we can later process long values in + * sorted order without keeping much state. Ranges are: + * - 22 bits for the valid-after time in half hours since 1970-01-01 + * 00:00:00 (which won't overflow until year 2209), + * - 8 bits for the attribute index (which allows up to 253 different + * relay flags in addition to reserved 0, "Listed", and + * "Measured"), + * - 24 bits for the fingerprint index (which allows over 16 million + * different relay fingerprints in the current execution), and + * - 6 bits for the authority index (which allows up to 63 different + * authorities in addition to the reserved 0). + * + * If any of these numbers overflows during the execution, we'll detect + * that, suggest to process less data at once, and exit with an error. + * Still, it should be possible to process months of data in a single + * execution. For example, one set of votes published at the same + * valid-after hour in December 2015 required to keep 420,000 long + * values in memory, which is roughly 3.2 MiB plus list overhead. */ + protected List<Long> assignments = new ArrayList<Long>(); + protected final static int VALIDAFTER_LEN = 22, ATTRIBUTE_LEN = 8, + FINGERPRINT_LEN = 24, AUTHORITY_LEN = 6; + protected final static int + VALIDAFTER_SHIFT = ATTRIBUTE_LEN + FINGERPRINT_LEN + AUTHORITY_LEN, + ATTRIBUTE_SHIFT = FINGERPRINT_LEN + AUTHORITY_LEN, + FINGERPRINT_SHIFT = AUTHORITY_LEN, + AUTHORITY_SHIFT = 0; + + /* Define some constants for timestamp math. */ + protected final static long HALF_HOUR = 30L * 60L * 1000L, + ONE_HOUR = 2L * HALF_HOUR, HALF_DAY = 12L * ONE_HOUR, + ONE_DAY = 2L * HALF_DAY; + + /* Convert the given valid-after time in milliseconds, attribute index, + * fingerprint index, and authority index to a long integer following + * the conversion rules stated above. Return -1 in case of + * overflows. */ + protected static long convertToLongValue(long validAfterMillis, + int attributeIndex, int fingerprintIndex, int authorityIndex) { + long validAfterHalfHours = validAfterMillis / HALF_HOUR; + if (validAfterHalfHours < 0L || + validAfterHalfHours >= (1L << VALIDAFTER_LEN)) { + return -1; + } + if (attributeIndex < 0 || attributeIndex >= (1 << ATTRIBUTE_LEN)) { + return -1; + } + if (fingerprintIndex < 0 || + fingerprintIndex >= (1 << FINGERPRINT_LEN)) { + return -1; + } + if (authorityIndex < 0 || authorityIndex >= (1 << AUTHORITY_LEN)) { + return -1; + } + long longValue = (validAfterHalfHours << VALIDAFTER_SHIFT) + + ((long) attributeIndex << ATTRIBUTE_SHIFT) + + ((long) fingerprintIndex << FINGERPRINT_SHIFT) + + ((long) authorityIndex << AUTHORITY_SHIFT); + return longValue; + } + + /* Extract the valid-after time in milliseconds from the given long + * integer value. */ + protected static long extractValidAfterMillisFromLongValue( + long longValue) { + return (longValue >> VALIDAFTER_SHIFT) * HALF_HOUR; + } + + /* Extract the attribute index from the given long integer value. */ + protected static int extractAttributeIndexFromLongValue( + long longValue) { + return (int) ((longValue >> ATTRIBUTE_SHIFT) % (1 << ATTRIBUTE_LEN)); + } + + /* Extract the fingerprint index from the given long integer value. */ + protected static int extractFingerprintIndexFromLongValue( + long longValue) { + return (int) ((longValue >> FINGERPRINT_SHIFT) % + (1 << FINGERPRINT_LEN)); + } + + /* Extract the authority index from the given long integer value. */ + protected static int extractAuthorityIndexFromLongValue( + long longValue) { + return (int) ((longValue >> AUTHORITY_SHIFT) % (1 << AUTHORITY_LEN)); + } + + /* Keep all aggregated results in memory, so that we easily merge new + * results obtained in the current execution. + * + * Another reason for keeping all results in memory is that we may have + * processed some votes from a given valid-after time before, and now we + * need to decide whether we keep old results or replace them with new + * results. We decide this by using results that are based on more + * votes, which could be old or new results. + * + * Map keys are valid-after times formatted as strings, map values are + * sorted lists of all subsequent columns starting with that valid-after + * time. */ + protected SortedMap<String, List<String>> results = + new TreeMap<String, List<String>>(); + + /* Store all results in this .csv file. */ + protected File resultsFile = new File("stats/disagreement.csv"); + + /* Use the following .csv header line for results. */ + protected String resultsHeaderLine = + "validafter,attribute,votes,required,max,relays"; + + /* Read results from the previous execution to memory and do some minor + * validation of the file format while doing so. Return immediately + * without error if the file does not exist (yet). */ + private void readResults() throws Exception { + if (!this.resultsFile.exists()) { + return; + } + LineNumberReader lnr = new LineNumberReader(new BufferedReader( + new FileReader(this.resultsFile))); + String line; + if ((line = lnr.readLine()) == null || + !line.equals(this.resultsHeaderLine)) { + lnr.close(); + throw new IOException("Unexpected line " + lnr.getLineNumber() + + " in " + this.resultsFile + "."); + } + while ((line = lnr.readLine()) != null) { + if (!line.contains(",")) { + lnr.close(); + throw new IOException("Cannot parse invalid line " + + lnr.getLineNumber() + " in " + this.resultsFile + "."); + } + int indexOfFirstComma = line.indexOf(","); + String validafter = line.substring(0, indexOfFirstComma); + String otherColumns = line.substring(indexOfFirstComma); + if (!this.results.containsKey(validafter)) { + this.results.put(validafter, new ArrayList<String>()); + } + this.results.get(validafter).add(otherColumns); + } + lnr.close(); + } + + /* Write results to the results file. More precisely, write them to a + * temporary file and rename it to the target file to avoid failing half + * way through and losing the previous results file. */ + private void writeResults() throws Exception { + this.resultsFile.getParentFile().mkdirs(); + File resultsTmpFile = new File(this.resultsFile + ".tmp"); + BufferedWriter bw = new BufferedWriter(new FileWriter( + resultsTmpFile)); + bw.write(this.resultsHeaderLine + "\n"); + for (Map.Entry<String, List<String>> e : this.results.entrySet()) { + String validafter = e.getKey(); + for (String otherColumns : e.getValue()) { + bw.write(validafter + otherColumns + "\n"); + } + } + bw.close(); + resultsTmpFile.renameTo(this.resultsFile); + } + + /* Read relay network status votes from this directory. */ + protected File[] inDirectories = new File[] { + new File("../../shared/in/archive/relay-descriptors/votes"), + new File("../../shared/in/recent/relay-descriptors/votes") + }; + + /* Read relay network status votes from disk and extract all relevant + * pieces from them. */ + protected void readDescriptors() throws Exception { + DescriptorReader descriptorReader = + DescriptorSourceFactory.createDescriptorReader(); + descriptorReader.setMaxDescriptorFilesInQueue(5); + for (File inDirectory : this.inDirectories) { + descriptorReader.addDirectory(inDirectory); + } + Iterator<DescriptorFile> descriptorFiles = + descriptorReader.readDescriptors(); + while (descriptorFiles.hasNext()) { + DescriptorFile descriptorFile = descriptorFiles.next(); + for (Descriptor descriptor : descriptorFile.getDescriptors()) { + if ((descriptor instanceof RelayNetworkStatusVote)) { + RelayNetworkStatusVote vote = + (RelayNetworkStatusVote) descriptor; + processVote(vote); + } + } + } + } + + private static final String LISTED_ATTRIBUTE = "Listed", + MEASURED_ATTRIBUTE = "Measured"; + + /* Process a single relay network status vote. */ + private void processVote(RelayNetworkStatusVote vote) throws Exception { + long validAfterMillis = vote.getValidAfterMillis(); + if (validAfterMillis % ONE_DAY != HALF_DAY) { + /* Only process votes with a valid-after time of 12:00:00 as a means + * to reduce the overall amount of data. */ + return; + } + + /* Use the authority's identity to distinguish votes. */ + String authorityIdentity = vote.getIdentity(); + + /* Collect a set of all attributes that the authority assigns in this + * vote, which includes all known flags, the general "Listed" + * attribute for listing relays, and possibly the "Measured" attribute + * for bandwidth-measured relays. */ + Set<String> knownAttributes = new HashSet<String>( + vote.getKnownFlags()); + knownAttributes.add(LISTED_ATTRIBUTE); + + /* Go through all status entries in this vote and remember which + * attributes this authority assigns to which relays. */ + for (NetworkStatusEntry entry : + vote.getStatusEntries().values()) { + + /* Use the relay's fingerprint to distinguish relays. */ + String fingerprint = entry.getFingerprint(); + + /* Compile a set of all attributes assigned to this relay, including + * all relay flags, "Listed", and possibly "Measured". */ + Set<String> attributes = new HashSet<String>(entry.getFlags()); + attributes.add(LISTED_ATTRIBUTE); + if (entry.getMeasured() >= 0L) { + attributes.add(MEASURED_ATTRIBUTE); + knownAttributes.add(MEASURED_ATTRIBUTE); + } + + /* Remember all attributes assigned to this relay. */ + this.addAssignedAttributes(validAfterMillis, attributes, + fingerprint, authorityIdentity); + } + + /* Remember all attributes assigned by the authority in this vote. */ + this.addKnownAttributes(validAfterMillis, knownAttributes, + authorityIdentity); + + /* Remember all fingerprints voted on by the authority at the given + * valid-after time. */ + this.addKnownFingerprints(validAfterMillis, + vote.getStatusEntries().keySet()); + } + + /* Remember all attributes assigned to a given relay by an authority at + * a given valid-after time. These are converted to long integers + * with all components being non-zero. */ + protected void addAssignedAttributes(long validAfterMillis, + Set<String> attributes, String fingerprint, + String authorityIdentity) throws Exception { + int fingerprintIndex = this.getFingerprintIndexForString(fingerprint); + int authorityIndex = this.getAuthorityIndexForString( + authorityIdentity); + for (String attribute : attributes) { + int attributeIndex = this.getAttributeIndexForString(attribute); + long longValue = convertToLongValue(validAfterMillis, + attributeIndex, fingerprintIndex, authorityIndex); + if (longValue < 0L) { + throw new Exception("Could not convert vote data to the internal " + + "format. Try processing fewer votes at once."); + } + this.assignments.add(longValue); + } + } + + /* Remember all attributes voted on by an authority at a given + * valid-after time. These are converted to long integers with + * fingerprint component being zero. */ + protected void addKnownAttributes(long validAfterMillis, + Set<String> knownAttributes, String authorityIdentity) + throws Exception { + int authorityIndex = this.getAuthorityIndexForString( + authorityIdentity); + for (String attribute : knownAttributes) { + int attributeIndex = this.getAttributeIndexForString(attribute); + long longValue = convertToLongValue(validAfterMillis, + attributeIndex, 0, authorityIndex); + if (longValue < 0L) { + throw new Exception("Could not convert vote data to the internal " + + "format. Try processing fewer votes at once."); + } + this.assignments.add(longValue); + } + } + + /* Remember all fingerprints known by an authority at a given + * valid-after time. These are converted to long integers with + * attribute and authority component being zero. */ + protected void addKnownFingerprints(long validAfterMillis, + Set<String> knownFingerprints) throws Exception { + for (String fingerprint : knownFingerprints) { + int fingerprintIndex = this.getFingerprintIndexForString( + fingerprint); + long longValue = convertToLongValue(validAfterMillis, 0, + fingerprintIndex, 0); + if (longValue < 0L) { + throw new Exception("Could not convert vote data to the internal " + + "format. Try processing fewer votes at once."); + } + this.assignments.add(longValue); + } + } + + /* Aggregate everything we extracted from votes earlier into statistics + * on disagreement among directory authorities. */ + protected void aggregate() { + + /* Initialize a date format for formatting valid-after times. */ + DateFormat dateTimeFormat = new SimpleDateFormat( + "yyyy-MM-dd HH:mm:ss", Locale.US); + dateTimeFormat.setTimeZone(TimeZone.getTimeZone("UTC")); + + /* Sort long integer values and append the largest possible long + * value, so that we can process values in the following order + * (columns are valid-after time, attribute, fingerprint, authority; + * + stands for a value > 0, 0 stands for 0): + * (+, 0, +, 0): all fingerprints known at a given valid-after time + * (+, +, 0, +): all attributes known by a given authority + * (+, +, +, +): attributes assigned to relays by authority + * ... + * (MAX_VALUE): end-of-list marker */ + Collections.sort(this.assignments); + this.assignments.add(Long.MAX_VALUE); + + /* Remember long value and some of its components from the last + * iteration. */ + long lastLongValue = -1L, lastValidAfterMillis = -1L; + int lastAttributeIndex = -1, lastFingerprintIndex = -1; + + /* Keep a list of all output lines for a single valid-after time. */ + List<String> outputLines = new ArrayList<String>(); + + /* Keep counters for the number of fingerprints seen at a valid-after + * time, the number of authorities voting on an attribute, and the + * number of votes that a relay received for a given attribute. */ + int knownFingerprintsByAllAuthorities = 0, + authoritiesVotingOnAttribute = 0, votesForAttribute = 0; + + /* Keep counters of relays receiving a given number of votes on an + * attribute. The number at element i is the number of relays + * receiving i votes. */ + int[] relays = new int[(1 << AUTHORITY_LEN)]; + + /* Go through all long values in ascending order. */ + for (long longValue : this.assignments) { + + /* Skip duplicate values. */ + if (lastLongValue == longValue) { + continue; + } + + /* If we're looking at attributes assigned to relays and just moved + * from one non-zero fingerprint to the next, we need to wrap up + * results for the last fingerprint before moving on. */ + int fingerprintIndex = extractFingerprintIndexFromLongValue( + longValue); + if (lastAttributeIndex > 0 && lastFingerprintIndex > 0 && + lastFingerprintIndex != fingerprintIndex) { + + /* This relay received at least one vote for the given attribute, + * or otherwise it wouldn't be contained in the list of long + * values. Increment the counter for the number of votes we + * counted for this attribute, and then reset that counter. */ + relays[0]--; + relays[votesForAttribute]++; + votesForAttribute = 0; + } + + /* If we're looking at attributes and just moved from one non-zero + * attribute to the next, we need to wrap up results for the last + * attribute before moving on. And if we just moved to the first + * attribute, initialize counters. */ + int attributeIndex = extractAttributeIndexFromLongValue(longValue); + if (lastAttributeIndex >= 0 && + lastAttributeIndex != attributeIndex) { + + /* If we just finished a non-zero attribute, wrap it up. + * Determine the number of votes required for getting into the + * consensus, which is typically the majority of votes, except for + * the "Measured" attribute, where it's set to 3. Format one + * output line for each possible number of votes, from 0 to the + * total number of authorities voting on the attribute. */ + if (lastAttributeIndex > 0) { + String lastAttribute = this.getAttributeStringForIndex( + lastAttributeIndex); + int required = lastAttribute.equals(MEASURED_ATTRIBUTE) ? 3 + : (authoritiesVotingOnAttribute / 2) + 1; + for (int i = 0; i <= authoritiesVotingOnAttribute; i++) { + outputLines.add(String.format(",%s,%d,%d,%d,%d", + lastAttribute, i, required, authoritiesVotingOnAttribute, + relays[i])); + } + } + + /* Reset counters and initialize the bucket at index 0 with the + * total number of fingerprints known at this valid-after time. */ + authoritiesVotingOnAttribute = 0; + relays = new int[(1 << AUTHORITY_LEN)]; + relays[0] = knownFingerprintsByAllAuthorities; + } + + /* If we just moved from one valid-after time to the next, we need + * to wrap up results for the last valid-after time before moving + * on. */ + long validAfterMillis = extractValidAfterMillisFromLongValue( + longValue); + if (lastValidAfterMillis >= 0L && + lastValidAfterMillis < validAfterMillis) { + + /* Check if results already contain lines for this valid-after + * time. If so, only replace them with new results lines if there + * are more new lines than old lines. The rationale is that more + * lines are very likely based on more votes, and we want to + * include as many votes as possible in the aggregation. */ + String validAfterString = dateTimeFormat.format( + lastValidAfterMillis); + if (!this.results.containsKey(validAfterString) || + this.results.get(validAfterString).size() < + outputLines.size()) { + + /* Sort results lines, and then put them in. */ + Collections.sort(outputLines); + this.results.put(validAfterString, outputLines); + } + + /* Prepare for aggregating votes from the next valid-after + * time. */ + outputLines = new ArrayList<String>(); + knownFingerprintsByAllAuthorities = 0; + } + + /* If we reached our end-of-list marker, stop here. */ + if (longValue == Long.MAX_VALUE) { + break; + } + + /* Look at the current indexes and increment one of the three + * counters. If this value doesn't contain an attribute index, it + * was put in for counting all known fingerprints at this + * valid-after time. */ + if (attributeIndex == 0) { + knownFingerprintsByAllAuthorities++; + } + + /* Otherwise, if this value doesn't contain a fingerprint index, it + * was put in for counting authorities voting on a given attribute + * at the current valid-after time. */ + else if (fingerprintIndex == 0) { + authoritiesVotingOnAttribute++; + } + + /* Otherwise, if both indexes are non-zero, this value was put in to + * count how many authorities assign the attribute to this relay at + * this valid-after time. */ + else { + votesForAttribute++; + } + + /* Prepare moving on to the next value. */ + lastLongValue = longValue; + lastValidAfterMillis = validAfterMillis; + lastAttributeIndex = attributeIndex; + lastFingerprintIndex = fingerprintIndex; + } + } +} + diff --git a/shared/bin/20-run-disagreement-stats.sh b/shared/bin/20-run-disagreement-stats.sh new file mode 100755 index 0000000..9abe1e2 --- /dev/null +++ b/shared/bin/20-run-disagreement-stats.sh @@ -0,0 +1,5 @@ +#!/bin/sh +cd modules/disagreement/ +ant | grep "[java]" +cd ../../ + diff --git a/shared/bin/99-copy-stats-files.sh b/shared/bin/99-copy-stats-files.sh index 22018ba..23d46cf 100755 --- a/shared/bin/99-copy-stats-files.sh +++ b/shared/bin/99-copy-stats-files.sh @@ -5,4 +5,5 @@ cp -a modules/connbidirect/stats/connbidirect2.csv shared/stats/ cp -a modules/advbwdist/stats/advbwdist.csv shared/stats/ cp -a modules/hidserv/stats/hidserv.csv shared/stats/ cp -a modules/clients/stats/clients.csv shared/stats/ +cp -a modules/disagreement/stats/disagreement.csv shared/stats/

diff --git a/website/etc/metrics.json b/website/etc/metrics.json index 2e1ee4f..03e8b85 100644 --- a/website/etc/metrics.json +++ b/website/etc/metrics.json @@ -834,5 +834,27 @@ "type": "Link", "level": "Basic", "description": "<p>Uncharted made a visualization of data flow in the Tor network where they place each <a href="about.html#relay">relay</a> on a world map and illustrate traffic exchanged between relays as animated dots. More details can be found on the <a href="https://torflow.uncharted.software/%5C%22%3EUncharted website</a>.</p><p><a href="https://torflow.uncharted.software/%5C%22%3E<img src="images/uncharted-data-flow.png" alt="Data flow in the Tor network"></a></p>" + }, + { + "id": "disagreement-data", + "title": "Disagreement among the directory authorities", + "tags": [ + "Relays" + ], + "type": "Data", + "level": "Advanced", + "description": "<p>The following data file contains statistics about agreement or disagreement among the <a href="about.html#directory-authority">directory authorities</a>. Once per hour the directory authorities exchange votes with their view of the <a href="about.html#relay">relays</a> in the network including attributes like <a href="about.html#relay-flag">relay flags</a> or bandwidth measurements. This data file includes counts of relays by number of directory authorities assigning them a given attribute.</p>", + "data_file": "stats/disagreement.csv", + "data_column_spec": [ + "<b>validafter:</b> UTC timestamp (YYYY-MM-DD HH:MM:SS) after which votes became valid, which may be used as the vote publication time.", + "<b>attribute:</b> Attribute assigned to relays by directory authorities, which includes relay flags like <b>"Exit"</b> or <b>"BadExit"</b> as well as <b>"Listed"</b> for relays being listed in a vote and <b>"Measured"</b> for relays being measured by the bandwidth authorities.", + "<b>votes:</b> Number of votes assigning the attribute to relays.", + "<b>required:</b> Required number of votes for the attribute to be assigned to a relay for being included in the consensus.", + "<b>max:</b> Maximum number of possible votes assigning the attribute to relays.", + "<b>relays:</b> Number of relays that got the given number of votes for the given attribute." + ], + "related": [ + "relayflags" + ] } ] diff --git a/website/etc/web.xml b/website/etc/web.xml index 674be4c..8587947 100644 --- a/website/etc/web.xml +++ b/website/etc/web.xml @@ -77,6 +77,7 @@ <url-pattern>/connbidirect-data.html</url-pattern> <url-pattern>/connbidirect2-data.html</url-pattern> <url-pattern>/hidserv-data.html</url-pattern> + <url-pattern>/disagreement-data.html</url-pattern> </servlet-mapping>

<servlet> diff --git a/website/src/org/torproject/metrics/web/research/ResearchStatsServlet.java b/website/src/org/torproject/metrics/web/research/ResearchStatsServlet.java index 1e045c1..a4194f2 100644 --- a/website/src/org/torproject/metrics/web/research/ResearchStatsServlet.java +++ b/website/src/org/torproject/metrics/web/research/ResearchStatsServlet.java @@ -36,6 +36,7 @@ public class ResearchStatsServlet extends HttpServlet { this.availableStatisticsFiles.add("connbidirect2"); this.availableStatisticsFiles.add("advbwdist"); this.availableStatisticsFiles.add("hidserv"); + this.availableStatisticsFiles.add("disagreement"); }

public long getLastModified(HttpServletRequest request) {