[tor-commits] [exonerator/master] Use Java 8 date-time functionality.

commit 714862c3ecde23b44076c7dca42f8366714f8c11 Author: Karsten Loesing karsten.loesing@gmx.net Date: Sun Dec 16 11:39:42 2018 +0100

Use Java 8 date-time functionality.

Implements #28859. --- .../exonerator/ExoneraTorDatabaseImporter.java | 38 +++++---- .../metrics/exonerator/QueryServlet.java | 94 +++++++++++----------- 2 files changed, 63 insertions(+), 69 deletions(-)

diff --git a/src/main/java/org/torproject/metrics/exonerator/ExoneraTorDatabaseImporter.java b/src/main/java/org/torproject/metrics/exonerator/ExoneraTorDatabaseImporter.java index 3ed7c19..57eb5df 100644 --- a/src/main/java/org/torproject/metrics/exonerator/ExoneraTorDatabaseImporter.java +++ b/src/main/java/org/torproject/metrics/exonerator/ExoneraTorDatabaseImporter.java @@ -29,13 +29,14 @@ import java.sql.CallableStatement; import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException; -import java.sql.Timestamp; -import java.util.Calendar; +import java.time.Duration; +import java.time.Instant; +import java.time.LocalDateTime; +import java.time.ZoneOffset; import java.util.HashSet; import java.util.Map; import java.util.Set; import java.util.SortedMap; -import java.util.TimeZone; import java.util.TreeMap;

/* Import Tor descriptors into the ExoneraTor database. */ @@ -131,10 +132,11 @@ public class ExoneraTorDatabaseImporter { try { if (lockFile.exists()) { BufferedReader br = new BufferedReader(new FileReader(lockFile)); - long runStarted = Long.parseLong(br.readLine()); + Instant runStarted = Instant.ofEpochMilli(Long.parseLong( + br.readLine())); br.close(); - if (System.currentTimeMillis() - runStarted - < 6L * 60L * 60L * 1000L) { + if (runStarted.plus(Duration.ofHours(6L)) + .compareTo(Instant.now()) >= 0) { logger.warn("File 'exonerator-lock' is less than 6 " + "hours old. Exiting."); System.exit(1); @@ -223,7 +225,8 @@ public class ExoneraTorDatabaseImporter {

/* Parse a consensus. */ private static void parseConsensus(RelayNetworkStatusConsensus consensus) { - long validAfterMillis = consensus.getValidAfterMillis(); + LocalDateTime validAfter = LocalDateTime.ofInstant(Instant.ofEpochMilli( + consensus.getValidAfterMillis()), ZoneOffset.UTC); for (NetworkStatusEntry entry : consensus.getStatusEntries().values()) { if (entry.getFlags().contains("Running")) { String fingerprintBase64 = null; @@ -248,26 +251,21 @@ public class ExoneraTorDatabaseImporter { orAddresses.add(orAddressAndPort.substring(0, orAddressAndPort.lastIndexOf(":"))); } - importStatusentry(validAfterMillis, fingerprintBase64, nickname, + importStatusentry(validAfter, fingerprintBase64, nickname, exit, orAddresses); } } }

- /* UTC calendar for importing timestamps into the database. */ - private static Calendar calendarUTC = Calendar.getInstance( - TimeZone.getTimeZone("UTC")); - /* Import a status entry with one or more OR addresses into the * database. */ - private static void importStatusentry(long validAfterMillis, + private static void importStatusentry(LocalDateTime validAfter, String fingerprintBase64, String nickname, Boolean exit, Set<String> orAddresses) { try { for (String orAddress : orAddresses) { insertStatusentryStatement.clearParameters(); - insertStatusentryStatement.setTimestamp(1, - new Timestamp(validAfterMillis), calendarUTC); + insertStatusentryStatement.setObject(1, validAfter); insertStatusentryStatement.setString(2, fingerprintBase64); if (!orAddress.contains(":")) { insertStatusentryStatement.setString(3, orAddress); @@ -353,23 +351,23 @@ public class ExoneraTorDatabaseImporter { exitAddressParts[2]); String exitAddress24 = Hex.encodeHexString( exitAddress24Bytes); - long scannedMillis = e.getValue(); + LocalDateTime scanned = LocalDateTime.ofInstant( + Instant.ofEpochMilli(e.getValue()), ZoneOffset.UTC); importExitlistentry(fingerprintBase64, exitAddress24, exitAddress, - scannedMillis); + scanned); } } }

/* Import an exit list entry into the database. */ private static void importExitlistentry(String fingerprintBase64, - String exitAddress24, String exitAddress, long scannedMillis) { + String exitAddress24, String exitAddress, LocalDateTime scanned) { try { insertExitlistentryStatement.clearParameters(); insertExitlistentryStatement.setString(1, fingerprintBase64); insertExitlistentryStatement.setString(2, exitAddress); insertExitlistentryStatement.setString(3, exitAddress24); - insertExitlistentryStatement.setTimestamp(4, - new Timestamp(scannedMillis), calendarUTC); + insertExitlistentryStatement.setObject(4, scanned); insertExitlistentryStatement.execute(); } catch (SQLException e) { logger.error("Could not import exit list entry. Exiting.", e); diff --git a/src/main/java/org/torproject/metrics/exonerator/QueryServlet.java b/src/main/java/org/torproject/metrics/exonerator/QueryServlet.java index a807ad0..760e385 100644 --- a/src/main/java/org/torproject/metrics/exonerator/QueryServlet.java +++ b/src/main/java/org/torproject/metrics/exonerator/QueryServlet.java @@ -14,12 +14,15 @@ import java.sql.CallableStatement; import java.sql.Connection; import java.sql.ResultSet; import java.sql.SQLException; -import java.text.ParseException; import java.text.SimpleDateFormat; +import java.time.DateTimeException; +import java.time.Duration; +import java.time.Instant; +import java.time.LocalDate; +import java.time.LocalDateTime; import java.time.ZoneOffset; -import java.time.ZonedDateTime; +import java.time.format.DateTimeFormatter; import java.util.ArrayList; -import java.util.Calendar; import java.util.HashSet; import java.util.List; import java.util.Map; @@ -47,7 +50,9 @@ public class QueryServlet extends HttpServlet {

private DataSource ds;

- private static final long MILLISECONDS_IN_A_DAY = 24L * 60L * 60L * 1000L; + private static final DateTimeFormatter validAfterTimeFormatter + = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss") + .withZone(ZoneOffset.UTC);

@Override public void init() { @@ -88,7 +93,7 @@ public class QueryServlet extends HttpServlet { "Missing timestamp parameter."); return; } - Long timestamp = this.parseTimestampParameter(timestampParameter); + LocalDate timestamp = this.parseTimestampParameter(timestampParameter); if (null == timestamp) { response.sendError(HttpServletResponse.SC_BAD_REQUEST, "Invalid timestamp parameter."); @@ -216,9 +221,9 @@ public class QueryServlet extends HttpServlet { return address48; }

- private Long parseTimestampParameter( + private LocalDate parseTimestampParameter( String passedTimestampParameter) { - Long timestamp = null; + LocalDate timestamp = null; SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd"); dateFormat.setTimeZone(TimeZone.getTimeZone("UTC")); dateFormat.setLenient(false); @@ -226,8 +231,8 @@ public class QueryServlet extends HttpServlet { && passedTimestampParameter.length() > 0) { String timestampParameter = passedTimestampParameter.trim(); try { - timestamp = dateFormat.parse(timestampParameter).getTime(); - } catch (ParseException e) { + timestamp = LocalDate.parse(timestampParameter); + } catch (DateTimeException e) { timestamp = null; } } @@ -239,13 +244,13 @@ public class QueryServlet extends HttpServlet { * it matches the day before the current system date (in UTC) or is even * younger. */ private boolean checkTimestampTooRecent(String timestampParameter) { - return timestampParameter.compareTo(ZonedDateTime.now(ZoneOffset.UTC) - .toLocalDate().minusDays(1).toString()) >= 0; + return timestampParameter.compareTo(LocalDate.now(ZoneOffset.UTC) + .minusDays(1).toString()) >= 0; }

/* Helper methods for querying the database. */

- private QueryResponse queryDatabase(String relayIp, long timestamp) { + private QueryResponse queryDatabase(String relayIp, LocalDate timestamp) {

/* Convert address to hex. */ String addressHex = !relayIp.contains(":") @@ -255,23 +260,16 @@ public class QueryServlet extends HttpServlet { } String address24Hex = addressHex.substring(0, 6);

- /* Prepare formatting response items. */ - SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd"); - dateFormat.setTimeZone(TimeZone.getTimeZone("UTC")); - SimpleDateFormat validAfterTimeFormat = new SimpleDateFormat( - "yyyy-MM-dd HH:mm:ss"); - validAfterTimeFormat.setTimeZone(TimeZone.getTimeZone("UTC")); - /* Store all dates contained in the query response in order to populate the * {first|last}_date_in_database and relevant_statuses fields. */ - SortedSet<Long> allDates = new TreeSet<>(); + SortedSet<LocalDate> allDates = new TreeSet<>();

/* Store all possible matches for the results table by base64-encoded * fingerprint and valid-after time. This map is first populated by going * through the result set and adding or updating map entries, so that * there's one entry per fingerprint and valid-after time with one or more * addresses. In a second step, exit addresses are added to map entries. */ - SortedMap<String, SortedMap<Long, QueryResponse.Match>> + SortedMap<String, SortedMap<LocalDateTime, QueryResponse.Match>> matchesByFingerprintBase64AndValidAfter = new TreeMap<>();

/* Store all possible matches by address. This map has two purposes: First, @@ -289,53 +287,50 @@ public class QueryServlet extends HttpServlet { * result set and later added to the two maps above containing matches. The * reason for separating these steps is that the result set may contain * status entries and exit list entries in any specific order. */ - SortedMap<String, SortedMap<Long, String>> + SortedMap<String, SortedMap<LocalDateTime, String>> exitAddressesByFingeprintBase64AndScanned = new TreeMap<>();

/* Make the database query to populate the sets and maps above. */ - final long requestedConnection = System.currentTimeMillis(); - Calendar utcCalendar = Calendar.getInstance(TimeZone.getTimeZone("UTC")); + final Instant requestedConnection = Instant.now(); try (Connection conn = this.ds.getConnection()) { try (CallableStatement cs = conn.prepareCall( "{call search_by_date_address24(?, ?)}")) { - cs.setDate(1, new java.sql.Date(timestamp), utcCalendar); + cs.setObject(1, timestamp); cs.setString(2, address24Hex); try (ResultSet rs = cs.executeQuery()) { while (rs.next()) { - java.sql.Date date = rs.getDate(1, utcCalendar); + LocalDate date = rs.getObject(1, LocalDate.class); String fingerprintBase64 = rs.getString(2); - java.sql.Timestamp scanned = rs.getTimestamp(3, utcCalendar); + LocalDateTime scanned = rs.getObject(3, LocalDateTime.class); String exitAddress = rs.getString(4); - java.sql.Timestamp validAfter = rs.getTimestamp(5, utcCalendar); + LocalDateTime validAfter = rs.getObject(5, LocalDateTime.class); String nickname = rs.getString(6); Boolean exit = rs.getBoolean(7); String orAddress = rs.getString(8); if (null != date) { - allDates.add(date.getTime()); + allDates.add(date); } else if (null != scanned) { - long scannedMillis = scanned.getTime(); exitAddressesByFingeprintBase64AndScanned.putIfAbsent( fingerprintBase64, new TreeMap<>()); exitAddressesByFingeprintBase64AndScanned.get(fingerprintBase64) - .put(scannedMillis, exitAddress); + .put(scanned, exitAddress); } else if (null != validAfter) { - long validAfterMillis = validAfter.getTime(); matchesByFingerprintBase64AndValidAfter.putIfAbsent( fingerprintBase64, new TreeMap<>()); if (!matchesByFingerprintBase64AndValidAfter - .get(fingerprintBase64).containsKey(validAfterMillis)) { - String validAfterString = validAfterTimeFormat.format( - validAfterMillis); + .get(fingerprintBase64).containsKey(validAfter)) { + String validAfterString = validAfter.format( + validAfterTimeFormatter); String fingerprint = Hex.encodeHexString(Base64.decodeBase64( fingerprintBase64 + "=")).toUpperCase(); matchesByFingerprintBase64AndValidAfter.get(fingerprintBase64) - .put(validAfterMillis, new QueryResponse.Match( + .put(validAfter, new QueryResponse.Match( validAfterString, new TreeSet<>(), fingerprint, nickname, exit)); } QueryResponse.Match match = matchesByFingerprintBase64AndValidAfter - .get(fingerprintBase64).get(validAfterMillis); + .get(fingerprintBase64).get(validAfter); if (orAddress.contains(":")) { match.addresses.add("[" + orAddress + "]"); } else { @@ -349,8 +344,8 @@ public class QueryServlet extends HttpServlet { this.logger.warn("Result set error. Returning 'null'.", e); return null; } - this.logger.info("Returned a database connection to the pool after {}" - + " millis.", System.currentTimeMillis() - requestedConnection); + this.logger.info("Returned a database connection to the pool after {}.", + Duration.between(requestedConnection, Instant.now())); } catch (SQLException e) { this.logger.warn("Callable statement error. Returning 'null'.", e); return null; @@ -361,7 +356,7 @@ public class QueryServlet extends HttpServlet { }

/* Go through exit addresses and update possible matches. */ - for (Map.Entry<String, SortedMap<Long, String>> e + for (Map.Entry<String, SortedMap<LocalDateTime, String>> e : exitAddressesByFingeprintBase64AndScanned.entrySet()) { String fingerprintBase64 = e.getKey(); if (!matchesByFingerprintBase64AndValidAfter.containsKey( @@ -373,13 +368,12 @@ public class QueryServlet extends HttpServlet { * nearby matches. We'll just skip it. */ continue; } - for (Map.Entry<Long, String> e1 : e.getValue().entrySet()) { - long scannedMillis = e1.getKey(); + for (Map.Entry<LocalDateTime, String> e1 : e.getValue().entrySet()) { + LocalDateTime scanned = e1.getKey(); String exitAddress = e1.getValue(); for (QueryResponse.Match match : matchesByFingerprintBase64AndValidAfter.get(fingerprintBase64) - .subMap(scannedMillis, scannedMillis + MILLISECONDS_IN_A_DAY) - .values()) { + .subMap(scanned, scanned.plusDays(1L)).values()) { match.addresses.add(exitAddress); matchesByAddress.putIfAbsent(exitAddress, new HashSet<>()); matchesByAddress.get(exitAddress).add(match); @@ -390,13 +384,15 @@ public class QueryServlet extends HttpServlet { /* Write all results to a new QueryResponse object. */ final QueryResponse response = new QueryResponse(); response.queryAddress = relayIp; - response.queryDate = dateFormat.format(timestamp); + response.queryDate = timestamp.format(DateTimeFormatter.ISO_DATE); if (!allDates.isEmpty()) { - response.firstDateInDatabase = dateFormat.format(allDates.first()); - response.lastDateInDatabase = dateFormat.format(allDates.last()); + response.firstDateInDatabase = allDates.first() + .format(DateTimeFormatter.ISO_DATE); + response.lastDateInDatabase = allDates.last() + .format(DateTimeFormatter.ISO_DATE); response.relevantStatuses = allDates.contains(timestamp) - || allDates.contains(timestamp - MILLISECONDS_IN_A_DAY) - || allDates.contains(timestamp + MILLISECONDS_IN_A_DAY); + || allDates.contains(timestamp.minusDays(1L)) + || allDates.contains(timestamp.plusDays(1L)); } if (matchesByAddress.containsKey(relayIp)) { List<QueryResponse.Match> matchesList