entaxy-public/platform/runtime/base/base-support/src/main/java/ru/entaxy/platform/base/support/osgi/bundle/CapabilityHelper.java

/*-
 * ~~~~~~licensing~~~~~~
 * test-producers
 * ==========
 * Copyright (C) 2020 - 2023 EmDev LLC
 * ==========
 * You may not use this file except in accordance with the License Terms of the Copyright
 * Holder located at: https://entaxy.ru/eula . All copyrights, all intellectual property
 * rights to the Software and any copies are the property of the Copyright Holder. Unless
 * it is explicitly allowed the Copyright Holder, the User is prohibited from using the
 * Software for commercial purposes to provide services to third parties.
 * 
 * The Copyright Holder hereby declares that the Software is provided on an "AS IS".
 * Under no circumstances does the Copyright Holder guarantee or promise that the
 * Software provided by him will be suitable or not suitable for the specific purposes
 * of the User, that the Software will meet all commercial and personal subjective
 * expectations of the User, that the Software will work properly, without technical
 * errors, quickly and uninterruptedly.
 * 
 * Under no circumstances shall the Copyright Holder or its Affiliates is not liable
 * to the User for any direct or indirect losses of the User, his expenses or actual
 * damage, including, downtime; loss of bussines; lost profit; lost earnings; loss
 * or damage to data, property, etc.
 * ~~~~~~/licensing~~~~~~
 */
package ru.entaxy.platform.base.support.osgi.bundle;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import ru.entaxy.platform.base.support.CommonUtils;

public class CapabilityHelper {

	protected boolean isMultipleNamespacesSupported = false;
	
	protected Map<String, CapabilityDescriptorImpl> requiredCapabilities = new HashMap<>();
	protected Map<String, List<CapabilityDescriptorImpl>> providedCapabilities = new HashMap<>();
	
	public CapabilityHelper() {
		super();
	}

	protected void load() {
/*		String existing = this.manifest.getCustomAttributes().get(CapabilityDescriptor.HEADER_PROVIDE_CAPABILITY);
		if (CommonUtils.isValid(existing)) {
			List<CapabilityDescriptorImpl> list = parse(existing);
			for (CapabilityDescriptorImpl c: list)
				addProvidedCapability(c);
		}
		existing = this.manifest.getCustomAttributes().get(CapabilityDescriptor.HEADER_REQUIRE_CAPABILITY);
		if (CommonUtils.isValid(existing)) {
			List<CapabilityDescriptorImpl> list = parse(existing);
			for (CapabilityDescriptorImpl c: list)
				addRequiredCapability(c);
		} */
	}
	
	protected void addProvidedCapability(CapabilityDescriptorImpl capabilityDescriptorImpl) {
		if (capabilityDescriptorImpl == null)
			return;
		if (!isMultipleNamespacesSupported) {
			this.providedCapabilities.put(capabilityDescriptorImpl.getNamespace()
					, Collections.singletonList(capabilityDescriptorImpl));
		} else {
			if (!this.providedCapabilities.containsKey(capabilityDescriptorImpl.getNamespace()))
				this.providedCapabilities.put(capabilityDescriptorImpl.getNamespace()
						, Collections.singletonList(capabilityDescriptorImpl));
			else
				this.providedCapabilities.get(capabilityDescriptorImpl.getNamespace())
						.add(capabilityDescriptorImpl);
		}
	}

	
	
	protected void addRequiredCapability(CapabilityDescriptorImpl capabilityDescriptorImpl) {
		if (capabilityDescriptorImpl == null)
			return;
		this.requiredCapabilities.put(capabilityDescriptorImpl.getNamespace(), capabilityDescriptorImpl);
	}
	
	protected List<CapabilityDescriptorImpl> parse(String capabilities) {
		List<CapabilityDescriptorImpl> result = new ArrayList<>();
		String[] caps = capabilities.split(",");
		for (int i=0; i< caps.length; i++)
			if (CommonUtils.isValid(caps[i])) {
				result.add(parseCapability(caps[i]));
			}
		return result;
	}
	
	protected CapabilityDescriptorImpl parseCapability(String capability) {
		String[] parsed = capability.split(";");
		CapabilityDescriptorImpl result = new CapabilityDescriptorImpl(parsed[0].trim());
		for (int i=1; i<parsed.length; i++) {
			result.parseAttribute(parsed[i]);
		}
		return result;
	}
	
	public List<CapabilityDescriptor> getProvidedCapabilities(){
		return this.providedCapabilities.values().stream()
				.flatMap(List::stream)
				.map(c -> (CapabilityDescriptor)c)
				.collect(Collectors.toList());
	}

	public List<CapabilityDescriptor> getProvidedCapabilities(String namesoace){
		if (!this.providedCapabilities.containsKey(namesoace))
			return new ArrayList<>();
		return this.providedCapabilities.get(namesoace)
				.stream()
				.map(c -> (CapabilityDescriptor)c)
				.collect(Collectors.toList());
	}
	
	
	public List<CapabilityDescriptor> getRequiredCapabilities(){
		return this.requiredCapabilities.values().stream()
				.map(c -> (CapabilityDescriptor)c)
				.collect(Collectors.toList());
	}
	
	public boolean isCapabilityProvided(String namespace) {
		return this.providedCapabilities.containsKey(namespace);
	}

	public boolean isCapabilityRequired(String namespace) {
		return this.requiredCapabilities.containsKey(namespace);
	}
	
	public CapabilityDescriptor provideCapability(String namespace) {
		CapabilityDescriptorImpl desc = new CapabilityDescriptorImpl(namespace);
		addProvidedCapability(desc);
		return desc;
	}

	public CapabilityDescriptor requireCapability(String namespace) {
		if (!this.requiredCapabilities.containsKey(namespace)) 
			this.requiredCapabilities.put(namespace, new CapabilityDescriptorImpl(namespace));
		return this.requiredCapabilities.get(namespace);
	}

	public boolean isMultipleNamespacesSupported() {
		return isMultipleNamespacesSupported;
	}

	public void setMultipleNamespacesSupported(boolean isMultipleNamespacesSupported) {
		this.isMultipleNamespacesSupported = isMultipleNamespacesSupported;
	}
	
}