First skeleton for REST backend

src/main/groovy/io/kamax/mxisd/backend/rest/RestAuthProvider.java

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+/*
+ * mxisd - Matrix Identity Server Daemon
+ * Copyright (C) 2017 Maxime Dor
+ *
+ * https://max.kamax.io/
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.kamax.mxisd.backend.rest;
+
+import io.kamax.mxisd.auth.UserAuthResult;
+import io.kamax.mxisd.auth.provider.AuthenticatorProvider;
+import io.kamax.mxisd.config.rest.RestBackendConfig;
+import org.apache.commons.lang.NotImplementedException;
+import org.springframework.beans.factory.annotation.Autowired;
+
+public class RestAuthProvider implements AuthenticatorProvider {
+
+    @Autowired
+    private RestBackendConfig cfg;
+
+    @Override
+    public boolean isEnabled() {
+        return cfg.isEnabled();
+    }
+
+    @Override
+    public UserAuthResult authenticate(String id, String password) {
+        throw new NotImplementedException();
+    }
+
+}

src/main/groovy/io/kamax/mxisd/backend/rest/RestThreePidProvider.java

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+/*
+ * mxisd - Matrix Identity Server Daemon
+ * Copyright (C) 2017 Maxime Dor
+ *
+ * https://max.kamax.io/
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.kamax.mxisd.backend.rest;
+
+import io.kamax.mxisd.config.rest.RestBackendConfig;
+import io.kamax.mxisd.lookup.SingleLookupReply;
+import io.kamax.mxisd.lookup.SingleLookupRequest;
+import io.kamax.mxisd.lookup.ThreePidMapping;
+import io.kamax.mxisd.lookup.provider.IThreePidProvider;
+import org.apache.commons.lang.NotImplementedException;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import java.util.List;
+import java.util.Optional;
+
+@Component
+public class RestThreePidProvider implements IThreePidProvider {
+
+    @Autowired
+    private RestBackendConfig cfg;
+
+    @Override
+    public boolean isEnabled() {
+        return cfg.isEnabled();
+    }
+
+    @Override
+    public boolean isLocal() {
+        return true;
+    }
+
+    @Override
+    public int getPriority() {
+        return 20;
+    }
+
+    @Override
+    public Optional<SingleLookupReply> find(SingleLookupRequest request) {
+        throw new NotImplementedException();
+    }
+
+    @Override
+    public List<ThreePidMapping> populate(List<ThreePidMapping> mappings) {
+        throw new NotImplementedException();
+    }
+
+}

src/main/groovy/io/kamax/mxisd/config/rest/RestBackendConfig.java

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+/*
+ * mxisd - Matrix Identity Server Daemon
+ * Copyright (C) 2017 Maxime Dor
+ *
+ * https://max.kamax.io/
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.kamax.mxisd.config.rest;
+
+import com.google.gson.Gson;
+import io.kamax.mxisd.exception.ConfigurationException;
+import org.apache.commons.lang.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.context.annotation.Configuration;
+
+import javax.annotation.PostConstruct;
+import java.net.MalformedURLException;
+import java.net.URL;
+
+@Configuration
+@ConfigurationProperties("rest")
+public class RestBackendConfig {
+
+    public static class IdentityEndpoints {
+
+        private String single;
+        private String bulk;
+
+        public String getSingle() {
+            return single;
+        }
+
+        public void setSingle(String single) {
+            this.single = single;
+        }
+
+        public String getBulk() {
+            return bulk;
+        }
+
+        public void setBulk(String bulk) {
+            this.bulk = bulk;
+        }
+
+    }
+
+    public static class Endpoints {
+
+        private IdentityEndpoints identity = new IdentityEndpoints();
+        private String auth;
+
+        public IdentityEndpoints getIdentity() {
+            return identity;
+        }
+
+        public void setIdentity(IdentityEndpoints identity) {
+            this.identity = identity;
+        }
+
+        public String getAuth() {
+            return auth;
+        }
+
+        public void setAuth(String auth) {
+            this.auth = auth;
+        }
+
+    }
+
+    private Logger log = LoggerFactory.getLogger(RestBackendConfig.class);
+
+    private boolean enabled;
+    private String host;
+    private Endpoints endpoints = new Endpoints();
+
+    public boolean isEnabled() {
+        return enabled;
+    }
+
+    public void setEnabled(boolean enabled) {
+        this.enabled = enabled;
+    }
+
+    public String getHost() {
+        return host;
+    }
+
+    public void setHost(String host) {
+        this.host = host;
+    }
+
+    public Endpoints getEndpoints() {
+        return endpoints;
+    }
+
+    public void setEndpoints(Endpoints endpoints) {
+        this.endpoints = endpoints;
+    }
+
+    @PostConstruct
+    private void postConstruct() {
+        Gson gson = new Gson();
+        log.info("--- REST backend config ---");
+        log.info("Enabled: {}", isEnabled());
+
+        if (isEnabled()) {
+            if (StringUtils.isBlank(host)) {
+                throw new ConfigurationException("rest.host");
+            }
+
+            try {
+                new URL(getHost());
+            } catch (MalformedURLException e) {
+                throw new ConfigurationException("rest.host", e.getMessage());
+            }
+
+            log.info("Host: {}", getHost());
+            log.info("Endpoints: {}", gson.toJson(endpoints));
+        }
+    }
+
+}