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[tor-commits] [metrics-lib/master] Simplify logging configuration.



commit d7d5303e76a69f5fd0fe2b3b9f6be9f25f1fd824
Author: Karsten Loesing <karsten.loesing@xxxxxxx>
Date:   Tue Mar 31 09:44:06 2020 +0200

    Simplify logging configuration.
    
    Implements #33549.
---
 CHANGELOG.md                                       |  1 +
 src/build                                          |  2 +-
 .../descriptor/DescriptorSourceFactory.java        |  4 +--
 .../descriptor/impl/DescriptorParserImpl.java      |  4 +--
 .../descriptor/impl/DescriptorReaderImpl.java      | 20 ++++++-------
 .../descriptor/index/DescriptorIndexCollector.java | 34 ++++++++++++----------
 .../org/torproject/descriptor/index/FileNode.java  |  8 ++---
 .../org/torproject/descriptor/index/IndexNode.java |  5 ----
 .../descriptor/log/LogDescriptorImpl.java          |  6 ----
 .../descriptor/log/WebServerAccessLogImpl.java     |  6 ----
 .../descriptor/log/WebServerAccessLogLine.java     |  4 +--
 11 files changed, 39 insertions(+), 55 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4a5a49e..f0c9a63 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@
  * Minor changes
    - Avoid invoking overridable methods from constructors.
    - Make all descriptor instances serializable.
+   - Simplify logging configuration.
 
 
 # Changes in version 2.10.0 - 2020-01-15
diff --git a/src/build b/src/build
index 264e498..fd85646 160000
--- a/src/build
+++ b/src/build
@@ -1 +1 @@
-Subproject commit 264e498f54a20f7d299daaf2533d043f880e6a8b
+Subproject commit fd856466bcb260f53ef69a24c102d0e49d171cc3
diff --git a/src/main/java/org/torproject/descriptor/DescriptorSourceFactory.java b/src/main/java/org/torproject/descriptor/DescriptorSourceFactory.java
index 97f93cc..3dc8439 100644
--- a/src/main/java/org/torproject/descriptor/DescriptorSourceFactory.java
+++ b/src/main/java/org/torproject/descriptor/DescriptorSourceFactory.java
@@ -40,7 +40,7 @@ import org.slf4j.LoggerFactory;
  */
 public final class DescriptorSourceFactory {
 
-  private static Logger log = LoggerFactory.getLogger(
+  private static final Logger logger = LoggerFactory.getLogger(
       DescriptorSourceFactory.class);
 
   /**
@@ -147,7 +147,7 @@ public final class DescriptorSourceFactory {
       }
       object = ClassLoader.getSystemClassLoader().loadClass(clazzName)
           .getDeclaredConstructor().newInstance();
-      log.info("Serving implementation {} for {}.", clazzName, type);
+      logger.debug("Serving implementation {} for {}.", clazzName, type);
     } catch (ReflectiveOperationException ex) {
       throw new RuntimeException("Cannot load class "
           + clazzName + "for type " + type, ex);
diff --git a/src/main/java/org/torproject/descriptor/impl/DescriptorParserImpl.java b/src/main/java/org/torproject/descriptor/impl/DescriptorParserImpl.java
index 0a2444b..160baac 100644
--- a/src/main/java/org/torproject/descriptor/impl/DescriptorParserImpl.java
+++ b/src/main/java/org/torproject/descriptor/impl/DescriptorParserImpl.java
@@ -23,7 +23,7 @@ import java.util.List;
 
 public class DescriptorParserImpl implements DescriptorParser {
 
-  private static final Logger log
+  private static final Logger logger
       = LoggerFactory.getLogger(DescriptorParserImpl.class);
 
   @Override
@@ -33,7 +33,7 @@ public class DescriptorParserImpl implements DescriptorParser {
       return this.detectTypeAndParseDescriptors(rawDescriptorBytes,
           sourceFile, fileName);
     } catch (DescriptorParseException e) {
-      log.debug("Cannot parse descriptor file '{}'.", sourceFile, e);
+      logger.debug("Cannot parse descriptor file '{}'.", sourceFile, e);
       List<Descriptor> parsedDescriptors = new ArrayList<>();
       parsedDescriptors.add(new UnparseableDescriptorImpl(rawDescriptorBytes,
           new int[] { 0, rawDescriptorBytes.length }, sourceFile, e));
diff --git a/src/main/java/org/torproject/descriptor/impl/DescriptorReaderImpl.java b/src/main/java/org/torproject/descriptor/impl/DescriptorReaderImpl.java
index 08c82ec..8ec04a5 100644
--- a/src/main/java/org/torproject/descriptor/impl/DescriptorReaderImpl.java
+++ b/src/main/java/org/torproject/descriptor/impl/DescriptorReaderImpl.java
@@ -36,11 +36,9 @@ import java.util.TreeMap;
 
 public class DescriptorReaderImpl implements DescriptorReader {
 
-  private static Logger log = LoggerFactory.getLogger(
+  private static final Logger logger = LoggerFactory.getLogger(
       DescriptorReaderImpl.class);
 
-  private static Logger statisticsLog = LoggerFactory.getLogger("statistics");
-
   private boolean hasStartedReading = false;
 
   private File manualSaveHistoryFile;
@@ -161,8 +159,8 @@ public class DescriptorReaderImpl implements DescriptorReader {
         this.readTarballs();
         this.hasFinishedReading = true;
       } catch (Throwable t) {
-        log.error("Bug: uncaught exception or error while reading descriptors.",
-            t);
+        logger.error("Bug: uncaught exception or error while reading "
+            + "descriptors.", t);
       } finally {
         if (null != this.descriptorQueue) {
           this.descriptorQueue.setOutOfDescriptors();
@@ -180,7 +178,7 @@ public class DescriptorReaderImpl implements DescriptorReader {
             StandardCharsets.UTF_8);
         for (String line : lines) {
           if (!line.contains(" ")) {
-            log.warn("Unexpected line structure in old history: {}", line);
+            logger.warn("Unexpected line structure in old history: {}", line);
             continue;
           }
           long lastModifiedMillis = Long.parseLong(line.substring(0,
@@ -189,7 +187,7 @@ public class DescriptorReaderImpl implements DescriptorReader {
           this.excludedFilesBefore.put(absolutePath, lastModifiedMillis);
         }
       } catch (IOException | NumberFormatException e) {
-        log.warn("Trouble reading given history file {}.", historyFile, e);
+        logger.warn("Trouble reading given history file {}.", historyFile, e);
       }
     }
 
@@ -212,7 +210,7 @@ public class DescriptorReaderImpl implements DescriptorReader {
           bw.newLine();
         }
       } catch (IOException e) {
-        log.warn("Trouble writing new history file '{}'.",
+        logger.warn("Trouble writing new history file '{}'.",
             historyFile, e);
       }
     }
@@ -250,7 +248,7 @@ public class DescriptorReaderImpl implements DescriptorReader {
             }
             this.parsedFilesAfter.put(absolutePath, lastModifiedMillis);
           } catch (IOException e) {
-            log.warn("Unable to read descriptor file {}.", file, e);
+            logger.warn("Unable to read descriptor file {}.", file, e);
           }
         }
       }
@@ -271,13 +269,13 @@ public class DescriptorReaderImpl implements DescriptorReader {
           this.parsedFilesAfter.put(tarball.getAbsolutePath(),
               tarball.lastModified());
         } catch (IOException e) {
-          log.warn("Unable to read tarball {}.", tarball, e);
+          logger.warn("Unable to read tarball {}.", tarball, e);
         }
         long previousPercentDone = 100L * progress / total;
         progress += tarball.length();
         long percentDone = 100L * progress / total;
         if (percentDone > previousPercentDone) {
-          statisticsLog.info("Finished reading {}% of tarball bytes.",
+          logger.info("Finished reading {}% of tarball bytes.",
               percentDone);
         }
       }
diff --git a/src/main/java/org/torproject/descriptor/index/DescriptorIndexCollector.java b/src/main/java/org/torproject/descriptor/index/DescriptorIndexCollector.java
index b4aae59..b2f4e97 100644
--- a/src/main/java/org/torproject/descriptor/index/DescriptorIndexCollector.java
+++ b/src/main/java/org/torproject/descriptor/index/DescriptorIndexCollector.java
@@ -30,7 +30,7 @@ import java.util.TreeMap;
  */
 public class DescriptorIndexCollector implements DescriptorCollector {
 
-  private static Logger log = LoggerFactory
+  private static final Logger logger = LoggerFactory
       .getLogger(DescriptorIndexCollector.class);
 
   /**
@@ -44,7 +44,7 @@ public class DescriptorIndexCollector implements DescriptorCollector {
   public void collectDescriptors(String collecTorIndexUrlString,
       String[] remoteDirectories, long minLastModified,
       File localDirectory, boolean deleteExtraneousLocalFiles) {
-    log.info("Starting descriptor collection.");
+    logger.info("Starting descriptor collection.");
     if (minLastModified < 0) {
       throw new IllegalArgumentException("A negative minimum "
           + "last-modified time is not permitted.");
@@ -60,7 +60,8 @@ public class DescriptorIndexCollector implements DescriptorCollector {
           + "fetched files.  Move this file away or delete it.  Aborting "
           + "descriptor collection.");
     }
-    log.info("Indexing local directory {}.", localDirectory.getAbsolutePath());
+    logger.info("Indexing local directory {}.",
+        localDirectory.getAbsolutePath());
     SortedMap<String, Long> localFiles = statLocalDirectory(localDirectory);
     SortedMap<String, FileNode> remoteFiles;
     IndexNode index;
@@ -71,27 +72,27 @@ public class DescriptorIndexCollector implements DescriptorCollector {
       if (indexUrl.getPath().isEmpty()) {
         indexUrlString += "/index/index.json";
       }
-      log.info("Fetching remote index file {}.", indexUrlString);
+      logger.info("Fetching remote index file {}.", indexUrlString);
       index = IndexNode.fetchIndex(indexUrlString);
       remoteFiles = index.retrieveFilesIn(remoteDirectories);
     } catch (Exception ex) {
-      log.warn("Cannot fetch index file {} and hence cannot determine which "
+      logger.warn("Cannot fetch index file {} and hence cannot determine which "
           + "remote files to fetch.  Aborting descriptor collection.",
           indexUrlString, ex);
       return;
     }
-    log.info("Fetching remote files from {}.", index.path);
+    logger.info("Fetching remote files from {}.", index.path);
     if (!this.fetchRemoteFiles(index.path, remoteFiles, minLastModified,
         localDirectory, localFiles)) {
       return;
     }
     if (deleteExtraneousLocalFiles) {
-      log.info("Deleting extraneous files from local directory {}.",
+      logger.info("Deleting extraneous files from local directory {}.",
           localDirectory);
       deleteExtraneousLocalFiles(remoteDirectories, remoteFiles, localDirectory,
           localFiles);
     }
-    log.info("Finished descriptor collection.");
+    logger.info("Finished descriptor collection.");
   }
 
   boolean fetchRemoteFiles(String baseUrl, SortedMap<String, FileNode> remotes,
@@ -108,14 +109,15 @@ public class DescriptorIndexCollector implements DescriptorCollector {
         continue;
       }
       if (!filepath.exists() && !filepath.mkdirs()) {
-        log.warn("Cannot create local directory {} to store remote file {}.  "
+        logger.warn("Cannot create local directory {} to store remote file {}. "
             + "Aborting descriptor collection.", filepath, filename);
         return false;
       }
       File destinationFile = new File(filepath, filename);
       File tempDestinationFile = new File(filepath, "." + filename);
-      log.debug("Fetching remote file {} with expected size of {} bytes from "
-          + "{}, storing locally to temporary file {}, then renaming to {}.",
+      logger.debug("Fetching remote file {} with expected size of {} bytes "
+          + "from {}, storing locally to temporary file {}, then renaming to "
+          + "{}.",
           filepathname, entry.getValue().size, baseUrl,
           tempDestinationFile.getAbsolutePath(),
           destinationFile.getAbsolutePath());
@@ -127,14 +129,14 @@ public class DescriptorIndexCollector implements DescriptorCollector {
           tempDestinationFile.renameTo(destinationFile);
           destinationFile.setLastModified(lastModifiedMillis);
         } else {
-          log.warn("Fetched remote file {} from {} has a size of {} bytes "
+          logger.warn("Fetched remote file {} from {} has a size of {} bytes "
               + "which is different from the expected {} bytes.  Not storing "
               + "this file.",
               filename, baseUrl, tempDestinationFile.length(),
               entry.getValue().size);
         }
       } catch (IOException e) {
-        log.warn("Cannot fetch remote file {} from {}.  Skipping that file.",
+        logger.warn("Cannot fetch remote file {} from {}.  Skipping that file.",
             filename, baseUrl, e);
       }
     }
@@ -151,7 +153,7 @@ public class DescriptorIndexCollector implements DescriptorCollector {
         if (localPath.startsWith(remDir)) {
           if (!remoteFiles.containsKey(localPath)) {
             File extraneousLocalFile = new File(localDir, localPath);
-            log.debug("Deleting extraneous local file {}.",
+            logger.debug("Deleting extraneous local file {}.",
                 extraneousLocalFile.getAbsolutePath());
             extraneousLocalFile.delete();
           }
@@ -179,8 +181,8 @@ public class DescriptorIndexCollector implements DescriptorCollector {
             }
         });
     } catch (IOException ioe) {
-      log.warn("Cannot index local directory {} to skip any remote files that "
-          + "already exist locally.  Continuing with an either empty or "
+      logger.warn("Cannot index local directory {} to skip any remote files "
+          + "that already exist locally. Continuing with an either empty or "
           + "incomplete index of local files.", localDir, ioe);
     }
     return locals;
diff --git a/src/main/java/org/torproject/descriptor/index/FileNode.java b/src/main/java/org/torproject/descriptor/index/FileNode.java
index 6c35146..a433d59 100644
--- a/src/main/java/org/torproject/descriptor/index/FileNode.java
+++ b/src/main/java/org/torproject/descriptor/index/FileNode.java
@@ -21,7 +21,7 @@ import java.util.TimeZone;
  */
 public class FileNode implements Comparable<FileNode> {
 
-  private static Logger log = LoggerFactory.getLogger(FileNode.class);
+  private static final Logger logger = LoggerFactory.getLogger(FileNode.class);
 
   /** Path (i.e. file name) is exposed in JSON. */
   public final String path;
@@ -70,9 +70,9 @@ public class FileNode implements Comparable<FileNode> {
       try {
         lastModifiedMillis = dateTimeFormat.parse(this.lastModified).getTime();
       } catch (ParseException ex) {
-        log.warn("Cannot parse last-modified time {} of remote file entry {}.  "
-            + "Fetching remote file regardless of configured last-modified "
-            + "time.  The following error message provides more details.",
+        logger.warn("Cannot parse last-modified time {} of remote file entry "
+            + "{}. Fetching remote file regardless of configured last-modified "
+            + "time. The following error message provides more details.",
             this.lastModified, this.path, ex);
         this.lastModifiedMillis = -1L;
       }
diff --git a/src/main/java/org/torproject/descriptor/index/IndexNode.java b/src/main/java/org/torproject/descriptor/index/IndexNode.java
index ce3faa4..d5f62ad 100644
--- a/src/main/java/org/torproject/descriptor/index/IndexNode.java
+++ b/src/main/java/org/torproject/descriptor/index/IndexNode.java
@@ -14,9 +14,6 @@ import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.PropertyNamingStrategy;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
@@ -39,8 +36,6 @@ import java.util.TreeSet;
 @JsonPropertyOrder({ "created", "revision", "path", "directories", "files" })
 public class IndexNode {
 
-  private static Logger log = LoggerFactory.getLogger(IndexNode.class);
-
   private static final int READ_TIMEOUT = Integer.parseInt(System
       .getProperty("sun.net.client.defaultReadTimeout", "60000"));
 
diff --git a/src/main/java/org/torproject/descriptor/log/LogDescriptorImpl.java b/src/main/java/org/torproject/descriptor/log/LogDescriptorImpl.java
index a253c50..fdebc90 100644
--- a/src/main/java/org/torproject/descriptor/log/LogDescriptorImpl.java
+++ b/src/main/java/org/torproject/descriptor/log/LogDescriptorImpl.java
@@ -8,9 +8,6 @@ import org.torproject.descriptor.DescriptorParseException;
 import org.torproject.descriptor.LogDescriptor;
 import org.torproject.descriptor.internal.FileType;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
 import java.io.BufferedReader;
 import java.io.ByteArrayInputStream;
 import java.io.File;
@@ -37,9 +34,6 @@ public abstract class LogDescriptorImpl
 
   private static final int unrecognizedLinesLimit = 3;
 
-  private static final Logger log
-      = LoggerFactory.getLogger(LogDescriptorImpl.class);
-
   private static Pattern filenamePattern = Pattern.compile(
       "(?:\\S*)" + MARKER + SEP + "(?:[0-9a-zA-Z]*)(?:\\.?)([a-zA-Z2]*)");
 
diff --git a/src/main/java/org/torproject/descriptor/log/WebServerAccessLogImpl.java b/src/main/java/org/torproject/descriptor/log/WebServerAccessLogImpl.java
index eb05413..986eafc 100644
--- a/src/main/java/org/torproject/descriptor/log/WebServerAccessLogImpl.java
+++ b/src/main/java/org/torproject/descriptor/log/WebServerAccessLogImpl.java
@@ -7,9 +7,6 @@ import org.torproject.descriptor.DescriptorParseException;
 import org.torproject.descriptor.WebServerAccessLog;
 import org.torproject.descriptor.internal.FileType;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
 import java.io.BufferedReader;
 import java.io.File;
 import java.io.InputStreamReader;
@@ -35,9 +32,6 @@ public class WebServerAccessLogImpl extends LogDescriptorImpl
 
   private static final long serialVersionUID = 7528914359452568309L;
 
-  private static final Logger log
-      = LoggerFactory.getLogger(WebServerAccessLogImpl.class);
-
   /** The log's name should include this string. */
   public static final String MARKER = InternalWebServerAccessLog.MARKER;
 
diff --git a/src/main/java/org/torproject/descriptor/log/WebServerAccessLogLine.java b/src/main/java/org/torproject/descriptor/log/WebServerAccessLogLine.java
index 445df9d..b39c633 100644
--- a/src/main/java/org/torproject/descriptor/log/WebServerAccessLogLine.java
+++ b/src/main/java/org/torproject/descriptor/log/WebServerAccessLogLine.java
@@ -25,7 +25,7 @@ public class WebServerAccessLogLine implements WebServerAccessLog.Line {
 
   private static final long serialVersionUID = 6160416810587561460L;
 
-  private static final Logger log = LoggerFactory
+  private static final Logger logger = LoggerFactory
       .getLogger(WebServerAccessLogLine.class);
 
   private static final String DATE_PATTERN = "dd/MMM/yyyy";
@@ -153,7 +153,7 @@ public class WebServerAccessLogLine implements WebServerAccessLog.Line {
         res.valid = true;
       }
     } catch (Throwable th) {
-      log.debug("Unmatchable line: '{}'.", line, th);
+      logger.debug("Unmatchable line: '{}'.", line, th);
       return new WebServerAccessLogLine();
     }
     return res;

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