sudo87 commented on code in PR #12737: URL: https://github.com/apache/cloudstack/pull/12737#discussion_r3156105193
########## plugins/dns/powerdns/src/main/java/org/apache/cloudstack/dns/powerdns/PowerDnsClient.java: ########## @@ -0,0 +1,377 @@ +// Licensed to the Apache Software Foundation (ASF) under one +// or more contributor license agreements. See the NOTICE file +// distributed with this work for additional information +// regarding copyright ownership. The ASF licenses this file +// to you under the Apache License, Version 2.0 (the +// "License"); you may not use this file except in compliance +// with the License. You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, +// software distributed under the License is distributed on an +// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +// KIND, either express or implied. See the License for the +// specific language governing permissions and limitations +// under the License. + +package org.apache.cloudstack.dns.powerdns; + +import java.io.IOException; +import java.net.URI; +import java.net.URISyntaxException; +import java.net.URLEncoder; +import java.nio.charset.StandardCharsets; +import java.util.Collections; +import java.util.List; +import java.util.concurrent.TimeUnit; + +import org.apache.cloudstack.api.ApiConstants; +import org.apache.cloudstack.dns.exception.DnsAuthenticationException; +import org.apache.cloudstack.dns.exception.DnsConflictException; +import org.apache.cloudstack.dns.exception.DnsNotFoundException; +import org.apache.cloudstack.dns.exception.DnsOperationException; +import org.apache.cloudstack.dns.exception.DnsProviderException; +import org.apache.cloudstack.dns.exception.DnsTransportException; +import org.apache.commons.collections.CollectionUtils; +import org.apache.http.client.config.RequestConfig; +import org.apache.http.client.methods.CloseableHttpResponse; +import org.apache.http.client.methods.HttpDelete; +import org.apache.http.client.methods.HttpGet; +import org.apache.http.client.methods.HttpPatch; +import org.apache.http.client.methods.HttpPost; +import org.apache.http.client.methods.HttpPut; +import org.apache.http.client.methods.HttpUriRequest; +import org.apache.http.entity.StringEntity; +import org.apache.http.impl.client.CloseableHttpClient; +import org.apache.http.impl.client.HttpClientBuilder; +import org.apache.http.impl.conn.PoolingHttpClientConnectionManager; +import org.apache.http.util.EntityUtils; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import com.cloud.utils.StringUtils; +import com.fasterxml.jackson.databind.JsonNode; +import com.fasterxml.jackson.databind.ObjectMapper; +import com.fasterxml.jackson.databind.node.ArrayNode; +import com.fasterxml.jackson.databind.node.ObjectNode; + +public class PowerDnsClient implements AutoCloseable { + public static final Logger logger = LoggerFactory.getLogger(PowerDnsClient.class); + private static final ObjectMapper MAPPER = new ObjectMapper(); + + private static final int CONNECT_TIMEOUT_MS = 5_000; + private static final int SOCKET_TIMEOUT_MS = 10_000; + private static final int MAX_CONNECTIONS_TOTAL = 50; + private static final int MAX_CONNECTIONS_PER_ROUTE = 10; + private static final String API_PREFIX = "/api/v1"; + public static final String DEFAULT_SERVER_NAME = "localhost"; + + private final CloseableHttpClient httpClient; + + public PowerDnsClient() { + PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager(); + connectionManager.setMaxTotal(MAX_CONNECTIONS_TOTAL); + connectionManager.setDefaultMaxPerRoute(MAX_CONNECTIONS_PER_ROUTE); + + RequestConfig requestConfig = RequestConfig.custom() + .setConnectTimeout(CONNECT_TIMEOUT_MS) + .setConnectionRequestTimeout(CONNECT_TIMEOUT_MS) + .setSocketTimeout(SOCKET_TIMEOUT_MS) + .build(); + + this.httpClient = HttpClientBuilder.create() + .setConnectionManager(connectionManager) + .setDefaultRequestConfig(requestConfig) + .evictIdleConnections(30, TimeUnit.SECONDS) + .disableCookieManagement() + .build(); + } + + public String resolveServerId(String baseUrl, Integer port, String apiKey, String externalServerId) throws DnsProviderException { + if (StringUtils.isNotBlank(externalServerId)) { + return validateServerId(baseUrl, port, apiKey, externalServerId); + } + return discoverAuthoritativeServerId(baseUrl, port, apiKey); + } + + public String validateServerId(String baseUrl, Integer port, String apiKey, String externalServerId) throws DnsProviderException { + String encodedServer = URLEncoder.encode(externalServerId, StandardCharsets.UTF_8); + HttpGet request = new HttpGet(buildUrl(baseUrl, port, "/servers/" + encodedServer)); + JsonNode server = execute(request, apiKey, 200); + if (!ApiConstants.AUTHORITATIVE.equalsIgnoreCase(server.path("daemon_type").asText(null))) { + throw new DnsOperationException(String.format("Server %s is not authoritative type=%s", externalServerId, + server.path("daemon_type").asText(null))); + } + return externalServerId; + } + + public String discoverAuthoritativeServerId(String baseUrl, Integer port, String apiKey) throws DnsProviderException { + String url = buildUrl(baseUrl, port , "/servers"); + HttpGet request = new HttpGet(url); + JsonNode servers = execute(request, apiKey, 200); + if (servers == null || !servers.isArray() || servers.isEmpty()) { + throw new DnsOperationException("No servers returned by PowerDNS API"); + } + String fallbackId = null; + for (JsonNode server : servers) { + String daemonType = server.path("daemon_type").asText(null); + if (!ApiConstants.AUTHORITATIVE.equalsIgnoreCase(daemonType)) { + continue; + } + String serverId = server.path(ApiConstants.ID).asText(null); + if (StringUtils.isBlank(serverId)) { + continue; + } + // Prefer localhost if present + if (DEFAULT_SERVER_NAME.equals(serverId)) { + return serverId; + } + if (fallbackId == null) { + fallbackId = serverId; + } + } + if (fallbackId != null) { + return fallbackId; + } + throw new DnsOperationException("No authoritative PowerDNS server found"); + } + + public String createZone(String baseUrl, Integer port, String apiKey, String externalServerId, String zoneName, + String zoneKind, boolean dnsSecFlag, List<String> nameServers) throws DnsProviderException { + + validateServerId(baseUrl, port, apiKey, externalServerId); + String normalizedZone = normalizeZone(zoneName); + ObjectNode json = MAPPER.createObjectNode(); + json.put(ApiConstants.NAME, normalizedZone); + json.put(ApiConstants.KIND, zoneKind); + json.put(ApiConstants.DNS_SEC, dnsSecFlag); + if (!CollectionUtils.isEmpty(nameServers)) { + ArrayNode nsArray = json.putArray(ApiConstants.NAME_SERVERS); + for (String ns : nameServers) { + nsArray.add(ns.endsWith(".") ? ns : ns + "."); + } + } + HttpPost request = new HttpPost(buildUrl(baseUrl, port, "/servers/" + externalServerId + "/zones")); + request.setEntity(new StringEntity(json.toString(), StandardCharsets.UTF_8)); + JsonNode response = execute(request, apiKey, 201); Review Comment: Client throws DnsConflictException and it is shown in the API response as error: ``` DNS zone: %s already exists" -- This is an automated message from the Apache Git Service. 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