Examples with SolrDeletionPolicy org.apache.solr.core.SolrDeletionPolicy used on opensource projects

Example 1 with SolrDeletionPolicy

use of org.apache.solr.core.SolrDeletionPolicy in project lucene-solr by apache.

the class ReplicationHandler method inform.

@Override
@SuppressWarnings("unchecked")
public void inform(SolrCore core) {
    this.core = core;
    registerCloseHook();
    Object nbtk = initArgs.get(NUMBER_BACKUPS_TO_KEEP_INIT_PARAM);
    if (nbtk != null) {
        numberBackupsToKeep = Integer.parseInt(nbtk.toString());
    } else {
        numberBackupsToKeep = 0;
    }
    NamedList slave = (NamedList) initArgs.get("slave");
    boolean enableSlave = isEnabled(slave);
    if (enableSlave) {
        currentIndexFetcher = pollingIndexFetcher = new IndexFetcher(slave, this, core);
        setupPolling((String) slave.get(POLL_INTERVAL));
        isSlave = true;
    }
    NamedList master = (NamedList) initArgs.get("master");
    boolean enableMaster = isEnabled(master);
    if (enableMaster || enableSlave) {
        if (core.getCoreContainer().getZkController() != null) {
            LOG.warn("SolrCloud is enabled for core " + core.getName() + " but so is old-style replication. Make sure you" + " intend this behavior, it usually indicates a mis-configuration. Master setting is " + Boolean.toString(enableMaster) + " and slave setting is " + Boolean.toString(enableSlave));
        }
    }
    if (!enableSlave && !enableMaster) {
        enableMaster = true;
        master = new NamedList<>();
    }
    if (enableMaster) {
        includeConfFiles = (String) master.get(CONF_FILES);
        if (includeConfFiles != null && includeConfFiles.trim().length() > 0) {
            List<String> files = Arrays.asList(includeConfFiles.split(","));
            for (String file : files) {
                if (file.trim().length() == 0)
                    continue;
                String[] strs = file.trim().split(":");
                // if there is an alias add it or it is null
                confFileNameAlias.add(strs[0], strs.length > 1 ? strs[1] : null);
            }
            LOG.info("Replication enabled for following config files: " + includeConfFiles);
        }
        List backup = master.getAll("backupAfter");
        boolean backupOnCommit = backup.contains("commit");
        boolean backupOnOptimize = !backupOnCommit && backup.contains("optimize");
        List replicateAfter = master.getAll(REPLICATE_AFTER);
        replicateOnCommit = replicateAfter.contains("commit");
        replicateOnOptimize = !replicateOnCommit && replicateAfter.contains("optimize");
        if (!replicateOnCommit && !replicateOnOptimize) {
            replicateOnCommit = true;
        }
        // save the last optimized commit point.
        if (replicateOnOptimize) {
            IndexDeletionPolicyWrapper wrapper = core.getDeletionPolicy();
            IndexDeletionPolicy policy = wrapper == null ? null : wrapper.getWrappedDeletionPolicy();
            if (policy instanceof SolrDeletionPolicy) {
                SolrDeletionPolicy solrPolicy = (SolrDeletionPolicy) policy;
                if (solrPolicy.getMaxOptimizedCommitsToKeep() < 1) {
                    solrPolicy.setMaxOptimizedCommitsToKeep(1);
                }
            } else {
                LOG.warn("Replication can't call setMaxOptimizedCommitsToKeep on " + policy);
            }
        }
        if (replicateOnOptimize || backupOnOptimize) {
            core.getUpdateHandler().registerOptimizeCallback(getEventListener(backupOnOptimize, replicateOnOptimize));
        }
        if (replicateOnCommit || backupOnCommit) {
            replicateOnCommit = true;
            core.getUpdateHandler().registerCommitCallback(getEventListener(backupOnCommit, replicateOnCommit));
        }
        if (replicateAfter.contains("startup")) {
            replicateOnStart = true;
            RefCounted<SolrIndexSearcher> s = core.getNewestSearcher(false);
            try {
                DirectoryReader reader = s == null ? null : s.get().getIndexReader();
                if (reader != null && reader.getIndexCommit() != null && reader.getIndexCommit().getGeneration() != 1L) {
                    try {
                        if (replicateOnOptimize) {
                            Collection<IndexCommit> commits = DirectoryReader.listCommits(reader.directory());
                            for (IndexCommit ic : commits) {
                                if (ic.getSegmentCount() == 1) {
                                    if (indexCommitPoint == null || indexCommitPoint.getGeneration() < ic.getGeneration())
                                        indexCommitPoint = ic;
                                }
                            }
                        } else {
                            indexCommitPoint = reader.getIndexCommit();
                        }
                    } finally {
                    // We don't need to save commit points for replication, the SolrDeletionPolicy
                    // always saves the last commit point (and the last optimized commit point, if needed)
                    /***
              if(indexCommitPoint != null){
                core.getDeletionPolicy().saveCommitPoint(indexCommitPoint.getGeneration());
              }
              ***/
                    }
                }
                // ensure the writer is init'd so that we have a list of commit points
                RefCounted<IndexWriter> iw = core.getUpdateHandler().getSolrCoreState().getIndexWriter(core);
                iw.decref();
            } catch (IOException e) {
                LOG.warn("Unable to get IndexCommit on startup", e);
            } finally {
                if (s != null)
                    s.decref();
            }
        }
        String reserve = (String) master.get(RESERVE);
        if (reserve != null && !reserve.trim().equals("")) {
            reserveCommitDuration = readIntervalMs(reserve);
        }
        LOG.info("Commits will be reserved for  " + reserveCommitDuration);
        isMaster = true;
    }
}