Examples with Supplier org.apache.logging.log4j.util.Supplier used on opensource projects

Example 61 with Supplier

use of org.apache.logging.log4j.util.Supplier in project elasticsearch by elastic.

the class ZenDiscovery method joinElectedMaster.

/**
     * Join a newly elected master.
     *
     * @return true if successful
     */
private boolean joinElectedMaster(DiscoveryNode masterNode) {
    try {
        // first, make sure we can connect to the master
        transportService.connectToNode(masterNode);
    } catch (Exception e) {
        logger.warn((Supplier<?>) () -> new ParameterizedMessage("failed to connect to master [{}], retrying...", masterNode), e);
        return false;
    }
    // we retry on illegal state if the master is not yet ready
    int joinAttempt = 0;
    while (true) {
        try {
            logger.trace("joining master {}", masterNode);
            membership.sendJoinRequestBlocking(masterNode, clusterService.localNode(), joinTimeout);
            return true;
        } catch (Exception e) {
            final Throwable unwrap = ExceptionsHelper.unwrapCause(e);
            if (unwrap instanceof NotMasterException) {
                if (++joinAttempt == this.joinRetryAttempts) {
                    logger.info("failed to send join request to master [{}], reason [{}], tried [{}] times", masterNode, ExceptionsHelper.detailedMessage(e), joinAttempt);
                    return false;
                } else {
                    logger.trace("master {} failed with [{}]. retrying... (attempts done: [{}])", masterNode, ExceptionsHelper.detailedMessage(e), joinAttempt);
                }
            } else {
                if (logger.isTraceEnabled()) {
                    logger.trace((Supplier<?>) () -> new ParameterizedMessage("failed to send join request to master [{}]", masterNode), e);
                } else {
                    logger.info("failed to send join request to master [{}], reason [{}]", masterNode, ExceptionsHelper.detailedMessage(e));
                }
                return false;
            }
        }
        try {
            Thread.sleep(this.joinRetryDelay.millis());
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
        }
    }
}

Example 62 with Supplier

use of org.apache.logging.log4j.util.Supplier in project elasticsearch by elastic.

the class ZenDiscovery method handleMinimumMasterNodesChanged.

private void handleMinimumMasterNodesChanged(final int minimumMasterNodes) {
    if (lifecycleState() != Lifecycle.State.STARTED) {
        // not started, ignore a node failure
        return;
    }
    final int prevMinimumMasterNode = ZenDiscovery.this.electMaster.minimumMasterNodes();
    ZenDiscovery.this.electMaster.minimumMasterNodes(minimumMasterNodes);
    if (!localNodeMaster()) {
        // We only set the new value. If the master doesn't see enough nodes it will revoke it's mastership.
        return;
    }
    clusterService.submitStateUpdateTask("zen-disco-min-master-nodes-changed", new LocalClusterUpdateTask(Priority.IMMEDIATE) {

        @Override
        public ClusterTasksResult<LocalClusterUpdateTask> execute(ClusterState currentState) {
            // check if we have enough master nodes, if not, we need to move into joining the cluster again
            if (!electMaster.hasEnoughMasterNodes(currentState.nodes())) {
                return rejoin(currentState, "not enough master nodes on change of minimum_master_nodes from [" + prevMinimumMasterNode + "] to [" + minimumMasterNodes + "]");
            }
            return unchanged();
        }

        @Override
        public void onNoLongerMaster(String source) {
        // ignoring (already logged)
        }

        @Override
        public void onFailure(String source, Exception e) {
            logger.error((Supplier<?>) () -> new ParameterizedMessage("unexpected failure during [{}]", source), e);
        }

        @Override
        public void clusterStateProcessed(String source, ClusterState oldState, ClusterState newState) {
            electMaster.logMinimumMasterNodesWarningIfNecessary(oldState, newState);
        }
    });
}

Example 63 with Supplier

use of org.apache.logging.log4j.util.Supplier in project elasticsearch by elastic.

the class AbstractScopedSettings method applySettings.

/**
     * Applies the given settings to all the settings consumers or to none of them. The settings
     * will be merged with the node settings before they are applied while given settings override existing node
     * settings.
     * @param newSettings the settings to apply
     * @return the unmerged applied settings
    */
public synchronized Settings applySettings(Settings newSettings) {
    if (lastSettingsApplied != null && newSettings.equals(lastSettingsApplied)) {
        // nothing changed in the settings, ignore
        return newSettings;
    }
    final Settings current = Settings.builder().put(this.settings).put(newSettings).build();
    final Settings previous = Settings.builder().put(this.settings).put(this.lastSettingsApplied).build();
    try {
        List<Runnable> applyRunnables = new ArrayList<>();
        for (SettingUpdater<?> settingUpdater : settingUpdaters) {
            try {
                applyRunnables.add(settingUpdater.updater(current, previous));
            } catch (Exception ex) {
                logger.warn((Supplier<?>) () -> new ParameterizedMessage("failed to prepareCommit settings for [{}]", settingUpdater), ex);
                throw ex;
            }
        }
        for (Runnable settingUpdater : applyRunnables) {
            settingUpdater.run();
        }
    } catch (Exception ex) {
        logger.warn("failed to apply settings", ex);
        throw ex;
    } finally {
    }
    return lastSettingsApplied = newSettings;
}

Example 64 with Supplier

use of org.apache.logging.log4j.util.Supplier in project elasticsearch by elastic.

the class MetaDataStateFormat method loadLatestState.

/**
     * Tries to load the latest state from the given data-locations. It tries to load the latest state determined by
     * the states version from one or more data directories and if none of the latest states can be loaded an exception
     * is thrown to prevent accidentally loading a previous state and silently omitting the latest state.
     *
     * @param logger a logger instance
     * @param dataLocations the data-locations to try.
     * @return the latest state or <code>null</code> if no state was found.
     */
public T loadLatestState(Logger logger, NamedXContentRegistry namedXContentRegistry, Path... dataLocations) throws IOException {
    List<PathAndStateId> files = new ArrayList<>();
    long maxStateId = -1;
    boolean maxStateIdIsLegacy = true;
    if (dataLocations != null) {
        // select all eligible files first
        for (Path dataLocation : dataLocations) {
            final Path stateDir = dataLocation.resolve(STATE_DIR_NAME);
            // we don't pass a glob since we need the group part for parsing
            try (DirectoryStream<Path> paths = Files.newDirectoryStream(stateDir)) {
                for (Path stateFile : paths) {
                    final Matcher matcher = stateFilePattern.matcher(stateFile.getFileName().toString());
                    if (matcher.matches()) {
                        final long stateId = Long.parseLong(matcher.group(1));
                        maxStateId = Math.max(maxStateId, stateId);
                        final boolean legacy = MetaDataStateFormat.STATE_FILE_EXTENSION.equals(matcher.group(2)) == false;
                        // on purpose, see NOTE below
                        maxStateIdIsLegacy &= legacy;
                        PathAndStateId pav = new PathAndStateId(stateFile, stateId, legacy);
                        logger.trace("found state file: {}", pav);
                        files.add(pav);
                    }
                }
            } catch (NoSuchFileException | FileNotFoundException ex) {
            // no _state directory -- move on
            }
        }
    }
    final List<Throwable> exceptions = new ArrayList<>();
    T state = null;
    // NOTE: we might have multiple version of the latest state if there are multiple data dirs.. for this case
    //       we iterate only over the ones with the max version. If we have at least one state file that uses the
    //       new format (ie. legacy == false) then we know that the latest version state ought to use this new format.
    //       In case the state file with the latest version does not use the new format while older state files do,
    //       the list below will be empty and loading the state will fail
    Collection<PathAndStateId> pathAndStateIds = files.stream().filter(new StateIdAndLegacyPredicate(maxStateId, maxStateIdIsLegacy)).collect(Collectors.toCollection(ArrayList::new));
    for (PathAndStateId pathAndStateId : pathAndStateIds) {
        try {
            final Path stateFile = pathAndStateId.file;
            final long id = pathAndStateId.id;
            if (pathAndStateId.legacy) {
                // read the legacy format -- plain XContent
                final byte[] data = Files.readAllBytes(stateFile);
                if (data.length == 0) {
                    logger.debug("{}: no data for [{}], ignoring...", prefix, stateFile.toAbsolutePath());
                    continue;
                }
                try (XContentParser parser = XContentHelper.createParser(namedXContentRegistry, new BytesArray(data))) {
                    state = fromXContent(parser);
                }
                if (state == null) {
                    logger.debug("{}: no data for [{}], ignoring...", prefix, stateFile.toAbsolutePath());
                }
            } else {
                state = read(namedXContentRegistry, stateFile);
                logger.trace("state id [{}] read from [{}]", id, stateFile.getFileName());
            }
            return state;
        } catch (Exception e) {
            exceptions.add(new IOException("failed to read " + pathAndStateId.toString(), e));
            logger.debug((Supplier<?>) () -> new ParameterizedMessage("{}: failed to read [{}], ignoring...", pathAndStateId.file.toAbsolutePath(), prefix), e);
        }
    }
    // if we reach this something went wrong
    ExceptionsHelper.maybeThrowRuntimeAndSuppress(exceptions);
    if (files.size() > 0) {
        // We have some state files but none of them gave us a usable state
        throw new IllegalStateException("Could not find a state file to recover from among " + files);
    }
    return state;
}

Example 65 with Supplier

use of org.apache.logging.log4j.util.Supplier in project elasticsearch by elastic.

the class MetaStateService method writeIndex.

/**
     * Writes the index state.
     *
     * This method is public for testing purposes.
     */
public void writeIndex(String reason, IndexMetaData indexMetaData) throws IOException {
    final Index index = indexMetaData.getIndex();
    logger.trace("[{}] writing state, reason [{}]", index, reason);
    try {
        IndexMetaData.FORMAT.write(indexMetaData, nodeEnv.indexPaths(indexMetaData.getIndex()));
    } catch (Exception ex) {
        logger.warn((Supplier<?>) () -> new ParameterizedMessage("[{}]: failed to write index state", index), ex);
        throw new IOException("failed to write state for [" + index + "]", ex);
    }
}