smolok.service.binding.camel.CamelOperationBindingFactory.groovy Maven / Gradle / Ivy

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package smolok.service.binding.camel

import org.apache.camel.spi.Registry
import org.apache.commons.lang3.Validate
import smolok.service.binding.Credentials
import smolok.service.binding.OperationBinding
import smolok.service.binding.OperationBindingFactory
import smolok.service.binding.Tenant

import java.lang.reflect.Method

import static java.util.Arrays.asList
import static org.slf4j.LoggerFactory.getLogger

class CamelOperationBindingFactory implements OperationBindingFactory {

    // Logger

    private static final LOG = getLogger(CamelOperationBindingFactory.class)

    private final Registry registry

    CamelOperationBindingFactory(Registry registry) {
        this.registry = registry
    }

    @Override
    OperationBinding operationBinding(Credentials credentials, String channel, Object incomingPayload, Map headers) {
        LOG.debug('Parsing operation binding for channel: {}', channel)
        def normalizedChannel = channel.substring(channel.lastIndexOf('/') + 1)
        LOG.debug('Channel {} after normalization: {}', channel, normalizedChannel)

        String[] channelParts = normalizedChannel.split("\\.");
        String service = channelParts[0];
        String operation = channelParts[1];

        def bean = registry.lookupByName(service)
        Validate.notNull(bean, "Cannot find service with name '%s'.", service);
        Class beanType = bean.getClass();

        LOG.debug("Detected service bean type {} for operation: {}", beanType, operation);
        List beanMethods = new ArrayList<>(asList(beanType.getDeclaredMethods()));
        beanMethods.addAll(asList(beanType.getMethods()));
        Method operationMethod = beanMethods.find{method -> method.getName().equals(operation)}

        List