Examples with BasicBSONObject org.bson.BasicBSONObject used on opensource projects

Example 71 with BasicBSONObject

use of org.bson.BasicBSONObject in project jackrabbit-oak by apache.

the class ReplicaSetInfo method updateRevisions.

private void updateRevisions(Iterable<BasicBSONObject> members) {
    Set<String> secondaries = new HashSet<String>();
    boolean unknownState = false;
    String primary = null;
    for (BasicBSONObject member : members) {
        MemberState state;
        try {
            state = MemberState.valueOf(member.getString("stateStr"));
        } catch (IllegalArgumentException e) {
            state = MemberState.UNKNOWN;
        }
        String name = member.getString("name");
        if (hiddenMembers.contains(name)) {
            continue;
        }
        switch(state) {
            case PRIMARY:
                primary = name;
                continue;
            case SECONDARY:
                secondaries.add(name);
                break;
            case ARBITER:
                continue;
            default:
                LOG.debug("Invalid state {} for instance {}", state, name);
                unknownState = true;
                break;
        }
    }
    Set<String> hostsToCheck = new HashSet<String>();
    if (secondaries.isEmpty()) {
        LOG.debug("No secondaries found: {}", members);
        unknownState = true;
    } else {
        hostsToCheck.addAll(secondaries);
    }
    if (primary == null) {
        LOG.debug("No primary found: {}", members);
        unknownState = true;
    } else {
        hostsToCheck.add(primary);
    }
    Map<String, Timestamped<RevisionVector>> vectors = null;
    if (!unknownState) {
        vectors = getRootRevisions(hostsToCheck);
        if (vectors.containsValue(null)) {
            unknownState = true;
        }
    }
    if (unknownState) {
        rootRevisions = null;
        secondariesSafeTimestamp = 0;
    } else {
        Timestamped<RevisionVector> primaryRevision = vectors.get(primary);
        Iterable<Timestamped<RevisionVector>> secondaryRevisions = filterKeys(vectors, in(secondaries)).values();
        rootRevisions = pmin(transform(secondaryRevisions, Timestamped.<RevisionVector>getExtractFunction()));
        if (rootRevisions == null || primaryRevision == null || isEmpty(secondaryRevisions)) {
            secondariesSafeTimestamp = 0;
        } else {
            secondariesSafeTimestamp = getSecondariesSafeTimestamp(primaryRevision, secondaryRevisions);
        }
    }
    LOG.debug("Minimum root revisions: {}. Current lag: {}", rootRevisions, getLag());
    nodeCollections.retain(hostsToCheck);
}