org.tomitribe.crest.environments.SystemEnvironment Maven / Gradle / Ivy

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/*
 * 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.tomitribe.crest.environments;


import org.tomitribe.crest.val.BeanValidation;
import org.tomitribe.crest.val.BeanValidationImpl;

import java.io.InputStream;
import java.io.PrintStream;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;

public class SystemEnvironment implements Environment {
    private final Map, Object> services;

    public SystemEnvironment(final Map, Object> services) {
        this.services = new HashMap<>(services);
        init();
    }

    public SystemEnvironment() {
        this.services = new HashMap<>();
        init();
    }

    @Override
    public PrintStream getOutput() {
        return System.out;
    }

    @Override
    public PrintStream getError() {
        return System.err;
    }

    @Override
    public InputStream getInput() {
        return System.in;
    }

    public Properties getProperties() {
        return System.getProperties();
    }

    @Override
    public  T findService(Class type) {
        return type.cast(services.get(type));
    }

    protected void init() {
        services.put(BeanValidationImpl.class, BeanValidation.create(this::findService));
    }
}