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OpenCADC VOSI server library
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/*
************************************************************************
******************* CANADIAN ASTRONOMY DATA CENTRE *******************
************** CENTRE CANADIEN DE DONNÉES ASTRONOMIQUES **************
*
* (c) 2022. (c) 2022.
* Government of Canada Gouvernement du Canada
* National Research Council Conseil national de recherches
* Ottawa, Canada, K1A 0R6 Ottawa, Canada, K1A 0R6
* All rights reserved Tous droits réservés
*
* NRC disclaims any warranties, Le CNRC dénie toute garantie
* expressed, implied, or énoncée, implicite ou légale,
* statutory, of any kind with de quelque nature que ce
* respect to the software, soit, concernant le logiciel,
* including without limitation y compris sans restriction
* any warranty of merchantability toute garantie de valeur
* or fitness for a particular marchande ou de pertinence
* purpose. NRC shall not be pour un usage particulier.
* liable in any event for any Le CNRC ne pourra en aucun cas
* damages, whether direct or être tenu responsable de tout
* indirect, special or general, dommage, direct ou indirect,
* consequential or incidental, particulier ou général,
* arising from the use of the accessoire ou fortuit, résultant
* software. Neither the name de l'utilisation du logiciel. Ni
* of the National Research le nom du Conseil National de
* Council of Canada nor the Recherches du Canada ni les noms
* names of its contributors may de ses participants ne peuvent
* be used to endorse or promote être utilisés pour approuver ou
* products derived from this promouvoir les produits dérivés
* software without specific prior de ce logiciel sans autorisation
* written permission. préalable et particulière
* par écrit.
*
* This file is part of the Ce fichier fait partie du projet
* OpenCADC project. OpenCADC.
*
* OpenCADC is free software: OpenCADC est un logiciel libre ;
* you can redistribute it and/or vous pouvez le redistribuer ou le
* modify it under the terms of modifier suivant les termes de
* the GNU Affero General Public la “GNU Affero General Public
* License as published by the License” telle que publiée
* Free Software Foundation, par la Free Software Foundation
* either version 3 of the : soit la version 3 de cette
* License, or (at your option) licence, soit (à votre gré)
* any later version. toute version ultérieure.
*
* OpenCADC is distributed in the OpenCADC est distribué
* hope that it will be useful, dans l’espoir qu’il vous
* but WITHOUT ANY WARRANTY; sera utile, mais SANS AUCUNE
* without even the implied GARANTIE : sans même la garantie
* warranty of MERCHANTABILITY implicite de COMMERCIALISABILITÉ
* or FITNESS FOR A PARTICULAR ni d’ADÉQUATION À UN OBJECTIF
* PURPOSE. See the GNU Affero PARTICULIER. Consultez la Licence
* General Public License for Générale Publique GNU Affero
* more details. pour plus de détails.
*
* You should have received Vous devriez avoir reçu une
* a copy of the GNU Affero copie de la Licence Générale
* General Public License along Publique GNU Affero avec
* with OpenCADC. If not, see OpenCADC ; si ce n’est
* AVAIL_SCHEMA_MAP = new TreeMap<>();
static {
AVAIL_SCHEMA_MAP.putAll(XMLConstants.SCHEMA_MAP);
String localURL = XmlUtil.getResourceUrlString(VOSI.AVAILABILITY_SCHEMA, XMLConstants.class);
AVAIL_SCHEMA_MAP.put(VOSI.AVAILABILITY_NS_URI, localURL);
}
private final URI resourceID;
private final boolean minDetail;
private final RegistryClient reg = new RegistryClient();
public AvailabilityClient(URI resourceID) {
if (resourceID == null) {
throw new IllegalArgumentException("resourceID is null");
}
this.resourceID = resourceID;
this.minDetail = false;
}
/**
* Create a client to check the availability of the given resouceID.
*
* @param resourceID the service resourceID
* @param minDetail if true checks that the service is running,
* if false checks that the service is fully functional.
*/
public AvailabilityClient(URI resourceID, boolean minDetail) {
if (resourceID == null) {
throw new IllegalArgumentException("resourceID is null");
}
this.resourceID = resourceID;
this.minDetail = minDetail;
}
@Deprecated
public AvailabilityClient() {
this.resourceID = null;
this.minDetail = false;
}
public Availability getAvailability() {
if (resourceID == null) {
throw new IllegalStateException("caller used deprecated constructor - must use deprecated getAvailability(URL)");
}
URL avail = reg.getServiceURL(resourceID, Standards.VOSI_AVAILABILITY, AuthMethod.ANON);
return doit(avail);
}
@Deprecated
public Availability getAvailability(final URL baseURL) {
if (baseURL == null) {
throw new IllegalArgumentException("null URL");
}
try {
URL availabilityURL = new URL(baseURL.toExternalForm() + AVAILABILITY_ENDPOINT);
return doit(availabilityURL);
} catch (MalformedURLException ex) {
throw new IllegalArgumentException("invalid baseURL: cannot append " + AVAILABILITY_ENDPOINT, ex);
}
}
private Availability doit(URL availabilityURL) {
Availability ret;
try {
if (this.minDetail) {
availabilityURL = new URL(availabilityURL.toString() + MIN_DETAIL_PARAMETER);
}
log.debug("GET " + availabilityURL);
HttpGet get = new HttpGet(availabilityURL, true);
get.setConnectionTimeout(DEFAULT_CONNECTION_TIMEOUT);
get.setMaxRetries(DEFAULT_MAX_RETRIES);
if (this.minDetail) {
get.setReadTimeout(MIN_DETAIL_READ_TIMEOUT);
} else {
get.setReadTimeout(DEFAULT_READ_TIMEOUT);
}
get.prepare();
log.debug("GET " + availabilityURL + " code: " + get.getResponseCode());
if (get.getResponseCode() == 200) {
if (this.minDetail) {
return new Availability(true);
} else {
Document xml = XmlUtil.buildDocument(get.getInputStream(), AVAIL_SCHEMA_MAP);
ret = Availability.fromXmlDocument(xml);
}
} else {
ret = getFalseAvailability("unexpected response code (" + get.getResponseCode() + ") from " + availabilityURL.toExternalForm());
}
} catch (JDOMException ex) {
ret = getFalseAvailability("Error parsing availability from " + availabilityURL + " reason: " + ex.getMessage());
} catch (Exception ex) {
ret = getFalseAvailability("Error getting availability from " + availabilityURL + " reason: " + ex.getMessage());
}
return ret;
}
protected Availability getFalseAvailability(String msg) {
return new Availability(false, msg);
}
}