com.almende.eve.protocol.jsonrpc.JSONRpcProtocolBuilder.java Source code

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Here is the source code for com.almende.eve.protocol.jsonrpc.JSONRpcProtocolBuilder.java

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/*
 * Copyright: Almende B.V. (2014), Rotterdam, The Netherlands
 * License: The Apache Software License, Version 2.0
 */
package com.almende.eve.protocol.jsonrpc;

import java.util.HashMap;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;

import com.almende.eve.capabilities.AbstractCapabilityBuilder;
import com.almende.eve.capabilities.handler.Handler;
import com.almende.eve.protocol.auth.Authorizor;
import com.almende.util.TypeUtil;
import com.almende.util.uuid.UUID;

/**
 * The Class JSONRpcProtocolBuilder.
 */
public class JSONRpcProtocolBuilder extends AbstractCapabilityBuilder<JSONRpcProtocol> {
    private static final Logger LOG = Logger.getLogger(JSONRpcProtocolBuilder.class.getName());
    private static final TypeUtil<Handler<Object>> TYPEUTIL = new TypeUtil<Handler<Object>>() {
    };
    private static final Map<String, JSONRpcProtocol> INSTANCES = new HashMap<String, JSONRpcProtocol>();

    /*
     * (non-Javadoc)
     * @see
     * com.almende.eve.capabilities.CapabilityService#get(com.fasterxml.jackson.
     * databind
     * .JsonNode, com.almende.eve.capabilities.handler.Handler, java.lang.Class)
     */
    @Override
    public JSONRpcProtocol build() {
        JSONRpcProtocolConfig config = JSONRpcProtocolConfig.decorate(getParams());
        String id = config.getId();
        if (id == null) {
            id = new UUID().toString();
            LOG.warning("Parameter 'id' is required for JSONRpcProtocol. (giving temporary name: " + id + ")");
        }

        JSONRpcProtocol result;
        if (INSTANCES.containsKey(id)) {
            result = INSTANCES.get(id);
            final Handler<Object> oldHandle = result.getHandle();
            oldHandle.update(TYPEUTIL.inject(getHandle()));
        } else {
            result = new JSONRpcProtocol(getParams(), TYPEUTIL.inject(getHandle()));
        }
        INSTANCES.put(id, result);

        // Add authorizor:
        try {
            @SuppressWarnings("unchecked")
            final Class<Authorizor> clazz = (Class<Authorizor>) Class.forName(config.getAuthorizor());
            result.setAuth(clazz.newInstance());
        } catch (ClassNotFoundException | InstantiationException | IllegalAccessException e) {
            LOG.log(Level.WARNING, "Couldn't instantiate authorizor class:" + config.getAuthorizor(), e);
        }
        return result;
    }

    /**
     * Delete.
     *
     * @param id
     *            the id
     */
    public static void delete(final String id) {
        INSTANCES.remove(id);
    }
}