Remove FileBasedConfig.load(boolean) introduced in d45219ba

We can't add this method to the super class StoredConfig since that
abstracts from filesystem storage. MockSystemReader.MockConfig is a
StoredConfig and is also used by tests for dfs based storage. Hence
remove this leaky abstraction.

This implies we always use the fallback FileStoreAttributes which means
a config file modification is considered racy within the first 2
seconds. This should not be an issue since typically configs change
rarely and re-reading a config within the racy period is relatively
cheap since configs are small.

Change-Id: Ia2615addc24a7cadf3c566ee842c6f4f07e159a5
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

org.eclipse.jgit/.settings/.api_filters

@@ -78,14 +78,6 @@
             </message_arguments>
         </filter>
     </resource>
-    <resource path="src/org/eclipse/jgit/storage/file/FileBasedConfig.java" type="org.eclipse.jgit.storage.file.FileBasedConfig">
-        <filter id="1142947843">
-            <message_arguments>
-                <message_argument value="5.1.9"/>
-                <message_argument value="load(boolean)"/>
-            </message_arguments>
-        </filter>
-    </resource>
     <resource path="src/org/eclipse/jgit/storage/pack/PackConfig.java" type="org.eclipse.jgit.storage.pack.PackConfig">
         <filter id="336658481">
             <message_arguments>

org.eclipse.jgit/src/org/eclipse/jgit/storage/file/FileBasedConfig.java

@@ -149,37 +149,13 @@ public class FileBasedConfig extends StoredConfig {
 	 */
 	@Override
 	public void load() throws IOException, ConfigInvalidException {
-		load(true);
-	}
-
-	/**
-	 * Load the configuration as a Git text style configuration file.
-	 * <p>
-	 * If the file does not exist, this configuration is cleared, and thus
-	 * behaves the same as though the file exists, but is empty.
-	 *
-	 * @param useFileSnapshotWithConfig
-	 *            if {@code true} use the FileSnapshot with config, otherwise
-	 *            use it without config
-	 * @throws IOException
-	 *             if IO failed
-	 * @throws ConfigInvalidException
-	 *             if config is invalid
-	 * @since 5.1.9
-	 */
-	public void load(boolean useFileSnapshotWithConfig)
-			throws IOException, ConfigInvalidException {
 		final int maxStaleRetries = 5;
 		int retries = 0;
 		while (true) {
 			final FileSnapshot oldSnapshot = snapshot;
 			final FileSnapshot newSnapshot;
-			if (useFileSnapshotWithConfig) {
-				newSnapshot = FileSnapshot.save(getFile());
-			} else {
-				// don't use config in this snapshot to avoid endless recursion
-				newSnapshot = FileSnapshot.saveNoConfig(getFile());
-			}
+			// don't use config in this snapshot to avoid endless recursion
+			newSnapshot = FileSnapshot.saveNoConfig(getFile());
 			try {
 				final byte[] in = IO.readFully(getFile());
 				final ObjectId newHash = hash(in);

org.eclipse.jgit/src/org/eclipse/jgit/util/FS.java

@@ -100,7 +100,7 @@ import org.eclipse.jgit.internal.storage.file.FileSnapshot;
 import org.eclipse.jgit.lib.ConfigConstants;
 import org.eclipse.jgit.lib.Constants;
 import org.eclipse.jgit.lib.Repository;
-import org.eclipse.jgit.storage.file.FileBasedConfig;
+import org.eclipse.jgit.lib.StoredConfig;
 import org.eclipse.jgit.treewalk.FileTreeIterator.FileEntry;
 import org.eclipse.jgit.treewalk.FileTreeIterator.FileModeStrategy;
 import org.eclipse.jgit.treewalk.WorkingTreeIterator.Entry;
@@ -510,17 +510,17 @@ public abstract class FS {
 
 		private static Optional<FileStoreAttributes> readFromConfig(
 				FileStore s) {
-			FileBasedConfig userConfig = SystemReader.getInstance()
+			StoredConfig userConfig = SystemReader.getInstance()
 					.openUserConfig(null, FS.DETECTED);
 			try {
-				userConfig.load(false);
+				userConfig.load();
 			} catch (IOException e) {
 				LOG.error(MessageFormat.format(JGitText.get().readConfigFailed,
-						userConfig.getFile().getAbsolutePath()), e);
+						userConfig), e);
 			} catch (ConfigInvalidException e) {
 				LOG.error(MessageFormat.format(
 						JGitText.get().repositoryConfigFileInvalid,
-						userConfig.getFile().getAbsolutePath(),
+						userConfig,
 						e.getMessage()));
 			}
 			String key = getConfigKey(s);
@@ -544,7 +544,7 @@ public abstract class FS {
 
 		private static void saveToConfig(FileStore s,
 				FileStoreAttributes c) {
-			FileBasedConfig userConfig = SystemReader.getInstance()
+			StoredConfig userConfig = SystemReader.getInstance()
 					.openUserConfig(null, FS.DETECTED);
 			long resolution = c.getFsTimestampResolution().toNanos();
 			TimeUnit resolutionUnit = getUnit(resolution);
@@ -562,7 +562,7 @@ public abstract class FS {
 			String key = getConfigKey(s);
 			while (!succeeded && retries < max_retries) {
 				try {
-					userConfig.load(false);
+					userConfig.load();
 					userConfig.setString(
 							ConfigConstants.CONFIG_FILESYSTEM_SECTION, key,
 							ConfigConstants.CONFIG_KEY_TIMESTAMP_RESOLUTION,
@@ -581,7 +581,7 @@ public abstract class FS {
 					// race with another thread, wait a bit and try again
 					try {
 						LOG.warn(MessageFormat.format(JGitText.get().cannotLock,
-								userConfig.getFile().getAbsolutePath()));
+								userConfig));
 						retries++;
 						Thread.sleep(20);
 					} catch (InterruptedException e1) {
@@ -589,13 +589,11 @@ public abstract class FS {
 					}
 				} catch (IOException e) {
 					LOG.error(MessageFormat.format(
-							JGitText.get().cannotSaveConfig,
-							userConfig.getFile().getAbsolutePath()), e);
+							JGitText.get().cannotSaveConfig, userConfig), e);
 				} catch (ConfigInvalidException e) {
 					LOG.error(MessageFormat.format(
 							JGitText.get().repositoryConfigFileInvalid,
-							userConfig.getFile().getAbsolutePath(),
-							e.getMessage()));
+							userConfig, e.getMessage()));
 				}
 			}
 		}