Examples with Arbiter org.apache.logging.log4j.core.config.arbiters.Arbiter used on opensource projects

Example 1 with Arbiter

use of org.apache.logging.log4j.core.config.arbiters.Arbiter in project logging-log4j2 by apache.

the class AbstractConfiguration method processSelect.

/**
 * Handle Select nodes. This finds the first child condition that returns true and attaches its children
 * to the parent of the Select Node. Other Nodes are discarded.
 * @param selectNode The Select Node.
 * @param type The PluginType of the Select Node.
 * @return The list of Nodes to be added to the parent.
 */
protected List<Node> processSelect(final Node selectNode, final PluginType<?> type) {
    final List<Node> addList = new ArrayList<>();
    final SelectArbiter select = (SelectArbiter) createPluginObject(type, selectNode, null);
    final List<Arbiter> conditions = new ArrayList<>();
    for (final Node child : selectNode.getChildren()) {
        final PluginType<?> nodeType = child.getType();
        if (nodeType != null) {
            if (Arbiter.class.isAssignableFrom(nodeType.getPluginClass())) {
                final Arbiter condition = (Arbiter) createPluginObject(nodeType, child, null);
                conditions.add(condition);
                child.setObject(condition);
            } else {
                LOGGER.error("Invalid Node {} for Select. Must be a Condition", child.getName());
            }
        } else {
            LOGGER.error("No PluginType for node {}", child.getName());
        }
    }
    final Arbiter condition = select.evaluateConditions(conditions);
    if (condition != null) {
        for (final Node child : selectNode.getChildren()) {
            if (condition == child.getObject()) {
                addList.addAll(child.getChildren());
                processConditionals(child);
            }
        }
    }
    return addList;
}

Example 2 with Arbiter

use of org.apache.logging.log4j.core.config.arbiters.Arbiter in project logging-log4j2 by apache.

the class AbstractConfiguration method processConditionals.

/**
 * Process conditions by evaluating them and including the children of conditions that are true
 * and discarding those that are not.
 * @param node The node to evaluate.
 */
protected void processConditionals(final Node node) {
    try {
        final List<Node> addList = new ArrayList<>();
        final List<Node> removeList = new ArrayList<>();
        for (final Node child : node.getChildren()) {
            final PluginType<?> type = child.getType();
            if (type != null && Arbiter.ELEMENT_TYPE.equals(type.getElementName())) {
                final Class<?> clazz = type.getPluginClass();
                if (SelectArbiter.class.isAssignableFrom(clazz)) {
                    removeList.add(child);
                    addList.addAll(processSelect(child, type));
                } else if (Arbiter.class.isAssignableFrom(clazz)) {
                    removeList.add(child);
                    try {
                        final Arbiter condition = (Arbiter) createPluginObject(type, child, null);
                        if (condition.isCondition()) {
                            addList.addAll(child.getChildren());
                            processConditionals(child);
                        }
                    } catch (final Exception inner) {
                        LOGGER.error("Exception processing {}: Ignoring and including children", type.getPluginClass());
                        processConditionals(child);
                    }
                } else {
                    LOGGER.error("Encountered Condition Plugin that does not implement Condition: {}", child.getName());
                    processConditionals(child);
                }
            } else {
                processConditionals(child);
            }
        }
        if (!removeList.isEmpty()) {
            final List<Node> children = node.getChildren();
            children.removeAll(removeList);
            children.addAll(addList);
            for (final Node grandChild : addList) {
                grandChild.setParent(node);
            }
        }
    } catch (final Exception ex) {
        LOGGER.error("Error capturing node data for node " + node.getName(), ex);
    }
}