com.opengamma.web.config.WebConfigVersionResource.java Source code

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Here is the source code for com.opengamma.web.config.WebConfigVersionResource.java

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/**
 * Copyright (C) 2009 - present by OpenGamma Inc. and the OpenGamma group of companies
 *
 * Please see distribution for license.
 */
package com.opengamma.web.config;

import java.net.URI;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.EntityTag;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Request;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.ResponseBuilder;

import org.apache.commons.lang.StringEscapeUtils;
import org.apache.commons.lang.StringUtils;
import org.joda.beans.impl.flexi.FlexiBean;

import com.opengamma.engine.view.ViewDefinition;
import com.opengamma.financial.analytics.ircurve.CurveSpecificationBuilderConfiguration;
import com.opengamma.financial.analytics.ircurve.YieldCurveDefinition;
import com.opengamma.id.UniqueId;
import com.opengamma.master.config.ConfigDocument;
import com.opengamma.web.json.CurveSpecificationBuilderConfigurationJSONBuilder;
import com.opengamma.web.json.ViewDefinitionJSONBuilder;
import com.opengamma.web.json.YieldCurveDefinitionJSONBuilder;

/**
 * RESTful resource for a version of a config.
 */
@Path("/configs/{configId}/versions/{versionId}")
@Produces(MediaType.TEXT_HTML)
public class WebConfigVersionResource extends AbstractWebConfigResource {

    /**
     * Creates the resource.
     * @param parent  the parent resource, not null
     */
    public WebConfigVersionResource(final AbstractWebConfigResource parent) {
        super(parent);
    }

    //-------------------------------------------------------------------------
    @GET
    public String getHTML() {
        FlexiBean out = createRootData();
        return getFreemarker().build(HTML_DIR + "configversion.ftl", out);
    }

    @GET
    @Produces(MediaType.APPLICATION_JSON)
    public Response getJSON(@Context Request request) {
        EntityTag etag = new EntityTag(data().getVersioned().getUniqueId().toString());
        ResponseBuilder builder = request.evaluatePreconditions(etag);
        if (builder != null) {
            return builder.build();
        }
        FlexiBean out = createRootData();
        ConfigDocument doc = data().getVersioned();
        String jsonConfig = toJSON(doc.getConfig().getValue());
        if (jsonConfig != null) {
            out.put("configJSON", jsonConfig);
        } else {
            out.put("configXML", StringEscapeUtils.escapeJavaScript(createXML(doc)));
        }
        out.put("type", data().getTypeMap().inverse().get(doc.getType()));
        String json = getFreemarker().build(JSON_DIR + "config.ftl", out);
        return Response.ok(json).tag(etag).build();
    }

    private String toJSON(final Object config) {
        if (config.getClass().isAssignableFrom(ViewDefinition.class)) {
            return ViewDefinitionJSONBuilder.INSTANCE.toJSON((ViewDefinition) config);
        }
        if (config.getClass().isAssignableFrom(YieldCurveDefinition.class)) {
            return YieldCurveDefinitionJSONBuilder.INSTANCE.toJSON((YieldCurveDefinition) config);
        }
        if (config.getClass().isAssignableFrom(CurveSpecificationBuilderConfiguration.class)) {
            return CurveSpecificationBuilderConfigurationJSONBuilder.INSTANCE
                    .toJSON((CurveSpecificationBuilderConfiguration) config);
        }
        return null;
    }

    //-------------------------------------------------------------------------
    /**
     * Creates the output root data.
     * @return the output root data, not null
     */
    protected FlexiBean createRootData() {
        FlexiBean out = super.createRootData();
        ConfigDocument latestDoc = data().getConfig();
        ConfigDocument versionedConfig = data().getVersioned();
        out.put("latestConfigDoc", latestDoc);
        out.put("latestConfig", latestDoc.getConfig().getValue());
        out.put("configDoc", versionedConfig);
        out.put("config", versionedConfig.getConfig().getValue());
        out.put("configDescription",
                getConfigTypesProvider().getDescription(versionedConfig.getConfig().getType()));
        out.put("configXml", createXML(versionedConfig));
        out.put("deleted", !latestDoc.isLatest());
        return out;
    }

    //-------------------------------------------------------------------------
    /**
     * Builds a URI for this resource.
     * @param data  the data, not null
     * @return the URI, not null
     */
    public static URI uri(final WebConfigData data) {
        return uri(data, null);
    }

    /**
     * Builds a URI for this resource.
     * @param data  the data, not null
     * @param overrideVersionId  the override version id, null uses information from data
     * @return the URI, not null
     */
    public static URI uri(final WebConfigData data, final UniqueId overrideVersionId) {
        String configId = data.getBestConfigUriId(null);
        String versionId = StringUtils
                .defaultString(overrideVersionId != null ? overrideVersionId.getVersion() : data.getUriVersionId());
        return data.getUriInfo().getBaseUriBuilder().path(WebConfigVersionResource.class).build(configId,
                versionId);
    }

}