/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.camel.impl;

import org.apache.camel.CamelContext;
import org.apache.camel.ContextTestSupport;
import org.apache.camel.Exchange;
import org.apache.camel.builder.RouteBuilder;
import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.*;

public class EndpointRegistryKeepRouteEndpointsTest extends ContextTestSupport {

    @Override
    protected CamelContext createCamelContext() throws Exception {
        CamelContext context = super.createCamelContext();
        context.getGlobalOptions().put(Exchange.MAXIMUM_ENDPOINT_CACHE_SIZE, "20");
        return context;
    }

    @Test
    public void testEndpointRegistryKeepRouteEndpoints() throws Exception {
        assertNotNull(context.hasEndpoint("direct://start"));
        assertNotNull(context.hasEndpoint("log://foo"));
        assertNotNull(context.hasEndpoint("log://bar"));
        assertNotNull(context.hasEndpoint("mock://result"));

        // we dont have this endpoint yet
        assertNull(context.hasEndpoint("mock://unknown0"));

        for (int i = 0; i < 50; i++) {
            template.sendBody("mock:unknown" + i, "Hello " + i);
        }

        // the eviction is async so force cleanup
        context.getEndpointRegistry().cleanUp();

        // endpoints from routes is always kept in the cache
        assertNotNull(context.hasEndpoint("direct://start"));
        assertNotNull(context.hasEndpoint("log://foo"));
        assertNotNull(context.hasEndpoint("log://bar"));
        assertNotNull(context.hasEndpoint("mock://result"));

        // and the dynamic cache only keeps 20 dynamic endpoints
        int count = 0;
        for (int i = 0; i < 50; i++) {
            String uri = "mock://unknown" + i;
            if (context.hasEndpoint(uri) != null) {
                count++;
                // and it should be dynamic
                assertTrue(context.getEndpointRegistry().isDynamic(uri));
            }
        }
        assertEquals(20, count, "Should only be 20 dynamic endpoints in the cache");

        // we should have 4 static, 20 dynamic and 24 in total
        assertEquals(4, context.getEndpointRegistry().staticSize());
        assertTrue(context.getEndpointRegistry().isStatic("direct://start"));

        assertEquals(20, context.getEndpointRegistry().dynamicSize());
        assertEquals(24, context.getEndpointRegistry().size());

        // and we can browse all 24
        assertEquals(24, context.getEndpoints().size());

        // and if we purge only the dynamic is removed
        context.getEndpointRegistry().purge();
        assertEquals(4, context.getEndpointRegistry().staticSize());
        assertEquals(0, context.getEndpointRegistry().dynamicSize());
        assertEquals(4, context.getEndpointRegistry().size());

        // endpoints from routes is always kept in the cache
        assertNotNull(context.hasEndpoint("direct://start"));
        assertNotNull(context.hasEndpoint("log://foo"));
        assertNotNull(context.hasEndpoint("log://bar"));
        assertNotNull(context.hasEndpoint("mock://result"));
    }

    @Override
    protected RouteBuilder createRouteBuilder() throws Exception {
        return new RouteBuilder() {
            @Override
            public void configure() throws Exception {
                from("direct:start").to("log:foo").to("log:bar").to("mock:result");
            }
        };
    }

}
