commit d1de2a89cd96c0f9dc6615042ac47c984fbbd590 Author: Karsten Loesing karsten.loesing@gmx.net Date: Thu Sep 1 15:56:56 2016 +0200

Process bridge network statuses from two authorities.

Fixes #20049. --- modules/legacy/build.xml | 2 +- .../cron/network/ConsensusStatsFileHandler.java | 160 ++++++++++++--------- 2 files changed, 96 insertions(+), 66 deletions(-)

diff --git a/modules/legacy/build.xml b/modules/legacy/build.xml index 6cacf50..1e4049b 100644 --- a/modules/legacy/build.xml +++ b/modules/legacy/build.xml @@ -12,7 +12,7 @@ <include name="commons-compress-1.9.jar"/> <include name="postgresql-jdbc3-9.2.jar"/> <include name="commons-lang-2.6.jar"/> - <include name="descriptor-1.2.0.jar"/> + <include name="descriptor-1.4.0.jar"/> </fileset> </path>

diff --git a/modules/legacy/src/org/torproject/ernie/cron/network/ConsensusStatsFileHandler.java b/modules/legacy/src/org/torproject/ernie/cron/network/ConsensusStatsFileHandler.java index 6222859..824e1eb 100644 --- a/modules/legacy/src/org/torproject/ernie/cron/network/ConsensusStatsFileHandler.java +++ b/modules/legacy/src/org/torproject/ernie/cron/network/ConsensusStatsFileHandler.java @@ -51,15 +51,16 @@ public class ConsensusStatsFileHandler { private File bridgeConsensusStatsRawFile;

/** - * Number of running bridges in a given bridge status. Map keys are - * bridge status times formatted as "yyyy-MM-dd HH:mm:ss", map values - * are lines as read from <code>stats/bridge-consensus-stats-raw</code>. + * Number of running bridges in a given bridge status. Map keys are the bridge + * status time formatted as "yyyy-MM-dd HH:mm:ss", a comma, and the bridge + * authority nickname, map values are lines as read from + * <code>stats/bridge-consensus-stats-raw</code>. */ private SortedMap<String, String> bridgesRaw;

/** * Average number of running bridges per day. Map keys are dates - * formatted as "yyyy-MM-dd", map values are the last column as written + * formatted as "yyyy-MM-dd", map values are the remaining columns as written * to <code>stats/consensus-stats</code>. */ private SortedMap<String, String> bridgesPerDay; @@ -132,17 +133,26 @@ public class ConsensusStatsFileHandler { continue; } String[] parts = line.split(","); - String dateTime = parts[0]; - if (parts.length == 2) { - this.bridgesRaw.put(dateTime, line + ",0"); - } else if (parts.length == 3) { - this.bridgesRaw.put(dateTime, line); - } else { + if (parts.length < 2 || parts.length > 4) { this.logger.warning("Corrupt line '" + line + "' in file " + this.bridgeConsensusStatsRawFile.getAbsolutePath() + "! Aborting to read this file!"); break; } + String key = parts[0] + "," + (parts.length < 4 ? "Tonga" : parts[1]); + String value = null; + if (parts.length == 2) { + value = key + "," + parts[1] + ",0"; + } else if (parts.length == 3) { + value = key + "," + parts[1] + "," + parts[2]; + } else if (parts.length == 4) { + value = key + "," + parts[2] + "," + parts[3]; + } else { + /* Impossible, we already checked the range above. */ + } + /* Assume that all lines without authority nickname are based on + * Tonga's network status, not Bifroest's. */ + this.bridgesRaw.put(key, value); } br.close(); this.logger.fine("Finished reading file " @@ -159,20 +169,21 @@ public class ConsensusStatsFileHandler { * Adds the intermediate results of the number of running bridges in a * given bridge status to the existing observations. */ - public void addBridgeConsensusResults(long publishedMillis, int running, - int runningEc2Bridges) { - String published = dateTimeFormat.format(publishedMillis); - String line = published + "," + running + "," + runningEc2Bridges; - if (!this.bridgesRaw.containsKey(published)) { + public void addBridgeConsensusResults(long publishedMillis, + String authorityNickname, int running, int runningEc2Bridges) { + String publishedAuthority = dateTimeFormat.format(publishedMillis) + "," + + authorityNickname; + String line = publishedAuthority + "," + running + "," + runningEc2Bridges; + if (!this.bridgesRaw.containsKey(publishedAuthority)) { this.logger.finer("Adding new bridge numbers: " + line); - this.bridgesRaw.put(published, line); + this.bridgesRaw.put(publishedAuthority, line); this.bridgeResultsAdded++; - } else if (!line.equals(this.bridgesRaw.get(published))) { + } else if (!line.equals(this.bridgesRaw.get(publishedAuthority))) { this.logger.warning("The numbers of running bridges we were just " + "given (" + line + ") are different from what we learned " - + "before (" + this.bridgesRaw.get(published) + ")! " + + "before (" + this.bridgesRaw.get(publishedAuthority) + ")! " + "Overwriting!"); - this.bridgesRaw.put(published, line); + this.bridgesRaw.put(publishedAuthority, line); } }

@@ -191,10 +202,24 @@ public class ConsensusStatsFileHandler { while (descriptorFiles.hasNext()) { DescriptorFile descriptorFile = descriptorFiles.next(); if (descriptorFile.getDescriptors() != null) { + String authority = null; + if (descriptorFile.getFileName().contains( + "4A0CCD2DDC7995083D73F5D667100C8A5831F16D")) { + authority = "Tonga"; + } else if (descriptorFile.getFileName().contains( + "1D8F3A91C37C5D1C4C19B1AD1D0CFBE8BF72D8E1")) { + authority = "Bifroest"; + } for (Descriptor descriptor : descriptorFile.getDescriptors()) { if (descriptor instanceof BridgeNetworkStatus) { + if (authority == null) { + this.logger.warning("Did not recognize the bridge authority " + + "that generated " + descriptorFile.getFileName() + + ". Skipping."); + continue; + } this.addBridgeNetworkStatus( - (BridgeNetworkStatus) descriptor); + (BridgeNetworkStatus) descriptor, authority); } } } @@ -203,7 +228,8 @@ public class ConsensusStatsFileHandler { } }

- private void addBridgeNetworkStatus(BridgeNetworkStatus status) { + private void addBridgeNetworkStatus(BridgeNetworkStatus status, + String authority) { int runningBridges = 0; int runningEc2Bridges = 0; for (NetworkStatusEntry statusEntry @@ -215,7 +241,7 @@ public class ConsensusStatsFileHandler { } } } - this.addBridgeConsensusResults(status.getPublishedMillis(), + this.addBridgeConsensusResults(status.getPublishedMillis(), authority, runningBridges, runningEc2Bridges); }

@@ -225,49 +251,51 @@ public class ConsensusStatsFileHandler { */ public void writeFiles() {

- /* Go through raw observations of numbers of running bridges in bridge - * statuses, calculate averages per day, and add these averages to - * final results. */ - if (!this.bridgesRaw.isEmpty()) { - String tempDate = null; + /* Go through raw observations and put everything into nested maps by day + * and bridge authority. */ + Map<String, Map<String, int[]>> bridgesPerDayAndAuthority = + new HashMap<String, Map<String, int[]>>(); + for (String bridgesRawLine : this.bridgesRaw.values()) { + String date = bridgesRawLine.substring(0, 10); + if (!bridgesPerDayAndAuthority.containsKey(date)) { + bridgesPerDayAndAuthority.put(date, new TreeMap<String, int[]>()); + } + String[] parts = bridgesRawLine.split(","); + String authority = parts[1]; + if (!bridgesPerDayAndAuthority.get(date).containsKey(authority)) { + bridgesPerDayAndAuthority.get(date).put(authority, new int[3]); + } + int[] bridges = bridgesPerDayAndAuthority.get(date).get(authority); + bridges[0] += Integer.parseInt(parts[2]); + bridges[1] += Integer.parseInt(parts[3]); + bridges[2]++; + } + + /* Sum up average numbers of running bridges per day reported by all bridge + * authorities and add these averages to final results. */ + for (Map.Entry<String, Map<String, int[]>> perDay + : bridgesPerDayAndAuthority.entrySet()) { + String date = perDay.getKey(); int brunning = 0; int brunningEc2 = 0; - int statuses = 0; - Iterator<String> it = this.bridgesRaw.values().iterator(); - boolean haveWrittenFinalLine = false; - while (it.hasNext() || !haveWrittenFinalLine) { - String next = it.hasNext() ? it.next() : null; - /* Finished reading a day or even all lines? */ - if (tempDate != null && (next == null - || !next.substring(0, 10).equals(tempDate))) { - /* Only write results if we have seen at least half of all - * statuses. */ - if (statuses >= 24) { - String line = "," + (brunning / statuses) + "," - + (brunningEc2 / statuses); - /* Are our results new? */ - if (!this.bridgesPerDay.containsKey(tempDate)) { - this.logger.finer("Adding new average bridge numbers: " - + tempDate + line); - this.bridgesPerDay.put(tempDate, line); - } else if (!line.equals(this.bridgesPerDay.get(tempDate))) { - this.logger.finer("Replacing existing average bridge " - + "numbers (" + this.bridgesPerDay.get(tempDate) - + " with new numbers: " + line); - this.bridgesPerDay.put(tempDate, line); - } - } - brunning = brunningEc2 = statuses = 0; - haveWrittenFinalLine = (next == null); - } - /* Sum up number of running bridges. */ - if (next != null) { - tempDate = next.substring(0, 10); - statuses++; - String[] parts = next.split(","); - brunning += Integer.parseInt(parts[1]); - brunningEc2 += Integer.parseInt(parts[2]); + for (int[] perAuthority : perDay.getValue().values()) { + int statuses = perAuthority[2]; + if (statuses < 12) { + /* Only write results if we have seen at least a dozen statuses. */ + continue; } + brunning += perAuthority[0] / statuses; + brunningEc2 += perAuthority[1] / statuses; + } + String line = "," + brunning + "," + brunningEc2; + /* Are our results new? */ + if (!this.bridgesPerDay.containsKey(date)) { + this.logger.finer("Adding new average bridge numbers: " + date + line); + this.bridgesPerDay.put(date, line); + } else if (!line.equals(this.bridgesPerDay.get(date))) { + this.logger.finer("Replacing existing average bridge numbers (" + + this.bridgesPerDay.get(date) + " with new numbers: " + line); + this.bridgesPerDay.put(date, line); } }

@@ -278,9 +306,11 @@ public class ConsensusStatsFileHandler { this.bridgeConsensusStatsRawFile.getParentFile().mkdirs(); BufferedWriter bw = new BufferedWriter( new FileWriter(this.bridgeConsensusStatsRawFile)); - bw.append("datetime,brunning,brunningec2\n"); + bw.append("datetime,authority,brunning,brunningec2"); + bw.newLine(); for (String line : this.bridgesRaw.values()) { - bw.append(line + "\n"); + bw.append(line); + bw.newLine(); } bw.close(); this.logger.fine("Finished writing file " @@ -376,7 +406,7 @@ public class ConsensusStatsFileHandler { + "old: " + this.bridgesRaw.lastKey()); } } catch (ParseException e) { - /* Can't parse the timestamp? Whatever. */ + logger.warning("Can't parse the timestamp? Reason: " + e); } } logger.info(dumpStats.toString());