controller-server/src/main/java/com/yahoo/vespa/hosted/controller/restapi/cost/CostApiHandler.java


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// Copyright 2020 Oath Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.controller.restapi.cost;

import com.yahoo.config.provision.CloudName;
import com.yahoo.container.jdisc.HttpRequest;
import com.yahoo.container.jdisc.HttpResponse;
import com.yahoo.container.jdisc.LoggingRequestHandler;
import com.yahoo.restapi.Path;
import com.yahoo.vespa.hosted.controller.Controller;
import com.yahoo.vespa.hosted.controller.api.integration.configserver.NodeRepository;
import com.yahoo.vespa.hosted.controller.api.integration.resource.CostReportConsumer;
import com.yahoo.restapi.ErrorResponse;
import com.yahoo.restapi.StringResponse;

import java.time.Clock;
import java.util.Optional;

import static com.yahoo.jdisc.http.HttpRequest.Method.GET;

/**
 * @author ldalves
 */
public class CostApiHandler extends LoggingRequestHandler {

    private final Controller controller;
    private final NodeRepository nodeRepository;
    private final CostReportConsumer costReportConsumer;

    public CostApiHandler(Context ctx, Controller controller) {
        super(ctx);
        this.controller = controller;
        this.nodeRepository = controller.serviceRegistry().configServer().nodeRepository();
        this.costReportConsumer = controller.serviceRegistry().costReportConsumer();
    }

    @Override
    public HttpResponse handle(HttpRequest request) {
        if (request.getMethod() != GET) {
            return ErrorResponse.methodNotAllowed("Method '" + request.getMethod() + "' is not supported");
        }

        Path path = new Path(request.getUri());

        if (path.matches("/cost/v1/csv")) {
            Optional<String> cloudProperty = Optional.ofNullable(request.getProperty("cloud"));
            CloudName cloud = cloudProperty.map(CloudName::from).orElse(CloudName.defaultName());
            return new StringResponse(CostCalculator.resourceShareByPropertyToCsv(nodeRepository, controller, Clock.systemUTC(), costReportConsumer.fixedAllocations(), cloud));
        }

        return ErrorResponse.notFoundError("Nothing at " + path);
    }
}