279 lines
10 KiB
Java
279 lines
10 KiB
Java
/*
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* Copyright (c) 2019 ETH Zürich, Educational Development and Technology (LET)
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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package ch.ethz.seb.sebserver.webservice;
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import java.net.InetAddress;
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import java.net.UnknownHostException;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.HashSet;
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import java.util.LinkedHashMap;
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import java.util.Map;
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import java.util.Set;
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import java.util.UUID;
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import org.apache.commons.lang3.BooleanUtils;
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import org.apache.commons.lang3.StringUtils;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.context.annotation.Lazy;
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import org.springframework.core.env.Environment;
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import org.springframework.stereotype.Service;
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import org.springframework.web.util.UriComponentsBuilder;
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import ch.ethz.seb.sebserver.gbl.Constants;
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import ch.ethz.seb.sebserver.gbl.profile.WebServiceProfile;
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import ch.ethz.seb.sebserver.webservice.servicelayer.dao.WebserviceInfoDAO;
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@Lazy
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@Service
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@WebServiceProfile
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public class WebserviceInfo {
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private static final Logger log = LoggerFactory.getLogger(WebserviceInfo.class);
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private static final String VERSION_KEY = "sebserver.version";
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private static final String WEB_SERVICE_TEST_PROPERTY = "sebserver.test.property";
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private static final String WEB_SERVICE_SERVER_NAME_KEY = "sebserver.webservice.http.external.servername";
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private static final String WEB_SERVICE_HTTP_SCHEME_KEY = "sebserver.webservice.http.external.scheme";
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private static final String WEB_SERVICE_HTTP_PORT = "sebserver.webservice.http.external.port";
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private static final String WEB_SERVICE_HOST_ADDRESS_KEY = "server.address";
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private static final String WEB_SERVICE_SERVER_PORT_KEY = "server.port";
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private static final String WEB_SERVICE_EXAM_API_DISCOVERY_ENDPOINT_KEY =
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"sebserver.webservice.api.exam.endpoint.discovery";
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private static final String WEB_SERVICE_EXTERNAL_ADDRESS_ALIAS = "sebserver.webservice.lms.address.alias";
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private static final String WEB_SERVICE_CONTEXT_PATH = "server.servlet.context-path";
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private final String sebServerVersion;
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private final String testProperty;
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private final String httpScheme;
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private final String hostAddress; // internal
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private final String webserverName; // external
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private final String serverPort; // internal
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private final String webserverPort; // external
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private final String discoveryEndpoint;
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private final String contextPath;
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private final String serverURLPrefix;
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private final boolean isDistributed;
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private final String webserviceUUID;
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private final long distributedUpdateInterval;
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private Map<String, String> lmsExternalAddressAlias;
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private final Set<String> activeProfiles;
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private final WebserviceInfoDAO webserviceInfoDAO;
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private boolean isMaster = false;
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public WebserviceInfo(
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final WebserviceInfoDAO webserviceInfoDAO,
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final Environment environment) {
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this.webserviceInfoDAO = webserviceInfoDAO;
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this.webserviceUUID = UUID.randomUUID().toString();
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this.sebServerVersion = environment.getRequiredProperty(VERSION_KEY);
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this.testProperty = environment.getProperty(WEB_SERVICE_TEST_PROPERTY, "NOT_AVAILABLE");
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this.httpScheme = environment.getRequiredProperty(WEB_SERVICE_HTTP_SCHEME_KEY);
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this.hostAddress = environment.getRequiredProperty(WEB_SERVICE_HOST_ADDRESS_KEY);
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this.webserverName = environment.getProperty(WEB_SERVICE_SERVER_NAME_KEY, "");
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this.serverPort = environment.getRequiredProperty(WEB_SERVICE_SERVER_PORT_KEY);
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this.webserverPort = environment.getProperty(WEB_SERVICE_HTTP_PORT);
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this.discoveryEndpoint = environment.getRequiredProperty(WEB_SERVICE_EXAM_API_DISCOVERY_ENDPOINT_KEY);
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this.contextPath = environment.getProperty(WEB_SERVICE_CONTEXT_PATH, "");
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this.distributedUpdateInterval = environment.getProperty(
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"sebserver.webservice.distributed.updateInterval",
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Long.class,
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3000L);
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this.activeProfiles = new HashSet<>(Arrays.asList(environment.getActiveProfiles()));
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if (StringUtils.isEmpty(this.webserverName)) {
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log.warn("NOTE: External server name, property : 'sebserver.webservice.http.external.servername' "
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+ "is not set from configuration. The external server name is set to the server address!");
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}
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final UriComponentsBuilder builder = UriComponentsBuilder.newInstance()
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.scheme(this.httpScheme)
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.host((StringUtils.isNotBlank(this.webserverName))
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? this.webserverName
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: this.hostAddress);
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if (StringUtils.isNotBlank(this.webserverPort)) {
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builder.port(this.webserverPort);
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}
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if (StringUtils.isNotBlank(this.contextPath) && !this.contextPath.equals("/")) {
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builder.path(this.contextPath);
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}
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this.serverURLPrefix = builder.toUriString();
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this.isDistributed = BooleanUtils.toBoolean(environment.getProperty(
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"sebserver.webservice.distributed",
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Constants.FALSE_STRING));
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final String addressAlias = environment.getProperty(WEB_SERVICE_EXTERNAL_ADDRESS_ALIAS, "");
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if (StringUtils.isNotBlank(addressAlias)) {
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try {
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final String[] aliass = StringUtils.split(addressAlias, Constants.LIST_SEPARATOR);
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final Map<String, String> mapping = new LinkedHashMap<>();
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for (final String alias : aliass) {
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final String[] nameValue =
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StringUtils.split(alias, Constants.FORM_URL_ENCODED_NAME_VALUE_SEPARATOR);
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mapping.put(nameValue[0], nameValue[1]);
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}
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this.lmsExternalAddressAlias = Collections.unmodifiableMap(mapping);
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} catch (final Exception e) {
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log.error("Failed to parse sebserver.webservice.lms.address.alias: ", e);
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this.lmsExternalAddressAlias = Collections.emptyMap();
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}
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} else {
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this.lmsExternalAddressAlias = Collections.emptyMap();
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}
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}
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public boolean isMaster() {
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return this.isMaster;
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}
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public void updateMaster() {
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this.isMaster = this.webserviceInfoDAO.isMaster(this.getWebserviceUUID());
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}
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public String getWebserviceUUID() {
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return this.webserviceUUID;
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}
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public String getSEBServerVersion() {
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return this.sebServerVersion;
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}
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public String getTestProperty() {
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return this.testProperty;
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}
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public boolean hasProfile(final String profile) {
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return this.activeProfiles.contains(profile);
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}
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public String getHttpScheme() {
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return this.httpScheme;
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}
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public String getHostAddress() {
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return this.hostAddress;
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}
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public String getWebserviceDomainName() {
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return this.webserverName;
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}
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public String getServerPort() {
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return this.serverPort;
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}
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public String getServerExternalPort() {
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return this.webserverPort;
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}
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public Object getContextPath() {
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return this.contextPath;
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}
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public String getDiscoveryEndpoint() {
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return this.discoveryEndpoint;
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}
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public String getDiscoveryEndpointAddress() {
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return this.serverURLPrefix + this.discoveryEndpoint;
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}
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public long getDistributedUpdateInterval() {
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return this.distributedUpdateInterval;
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}
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public String getLocalHostName() {
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try {
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return InetAddress.getLocalHost().getHostName();
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} catch (final UnknownHostException e) {
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return null;
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}
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}
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public String getLocalHostAddress() {
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try {
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return InetAddress.getLocalHost().getHostAddress();
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} catch (final UnknownHostException e) {
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return null;
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}
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}
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public String getLoopbackHostName() {
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return InetAddress.getLoopbackAddress().getHostName();
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}
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public String getLoopbackHostAddress() {
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return InetAddress.getLoopbackAddress().getHostAddress();
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}
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/** Get the server URL prefix in form of;
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* [scheme{http|https}]://[server-address{DNS-name|IP}]:[port]
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*
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* E.g.: https://seb.server.ch:8080
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*
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* @return the server URL prefix */
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public String getExternalServerURL() {
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return this.serverURLPrefix;
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}
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public boolean isDistributed() {
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return this.isDistributed;
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}
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public Map<String, String> getLmsExternalAddressAlias() {
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return this.lmsExternalAddressAlias;
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}
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public String getLmsExternalAddressAlias(final String internalAddress) {
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return this.lmsExternalAddressAlias
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.entrySet()
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.stream()
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.filter(entry -> internalAddress.contains(entry.getKey()))
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.findFirst()
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.map(Map.Entry::getValue)
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.orElse(null);
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}
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@Override
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public String toString() {
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final StringBuilder builder = new StringBuilder();
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builder.append("WebserviceInfo [testProperty=");
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builder.append(this.testProperty);
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builder.append(", httpScheme=");
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builder.append(this.httpScheme);
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builder.append(", hostAddress=");
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builder.append(this.hostAddress);
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builder.append(", webserverName=");
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builder.append(this.webserverName);
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builder.append(", serverPort=");
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builder.append(this.serverPort);
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builder.append(", webserverPort=");
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builder.append(this.webserverPort);
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builder.append(", discoveryEndpoint=");
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builder.append(this.discoveryEndpoint);
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builder.append(", serverURLPrefix=");
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builder.append(this.serverURLPrefix);
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builder.append(", isDistributed=");
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builder.append(this.isDistributed);
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builder.append(", lmsExternalAddressAlias=");
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builder.append(this.lmsExternalAddressAlias);
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builder.append("]");
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return builder.toString();
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}
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}
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