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/*
* Copyright 2019-present Open Networking Foundation
*
* Licensed 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.onosproject.k8snode.codec;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
import org.apache.commons.lang.StringUtils;
import org.onlab.packet.IpAddress;
import org.onlab.packet.IpPrefix;
import org.onosproject.codec.CodecContext;
import org.onosproject.codec.JsonCodec;
import org.onosproject.k8snode.api.DefaultK8sApiConfig;
import org.onosproject.k8snode.api.HostNodesInfo;
import org.onosproject.k8snode.api.K8sApiConfig;
import org.onosproject.k8snode.api.K8sApiConfig.Mode;
import org.onosproject.k8snode.api.K8sApiConfig.Scheme;
import java.util.HashSet;
import java.util.Set;
import static org.onlab.util.Tools.nullIsIllegal;
import static org.onosproject.k8snode.api.Constants.DEFAULT_CLUSTER_NAME;
import static org.onosproject.k8snode.api.Constants.DEFAULT_CONFIG_MODE;
import static org.onosproject.k8snode.api.Constants.DEFAULT_SEGMENT_ID;
import static org.onosproject.k8snode.api.K8sApiConfig.Scheme.HTTPS;
import static org.onosproject.k8snode.api.K8sApiConfig.State.DISCONNECTED;
/**
* Kubernetes API server config codec used for serializing and de-serializing JSON string.
*/
public final class K8sApiConfigCodec extends JsonCodec<K8sApiConfig> {
private static final String CLUSTER_NAME = "clusterName";
private static final String SEGMENT_ID = "segmentId";
private static final String EXT_NETWORK_CIDR = "extNetworkCidr";
private static final String SCHEME = "scheme";
private static final String MODE = "mode";
private static final String IP_ADDRESS = "ipAddress";
private static final String PORT = "port";
private static final String STATE = "state";
private static final String TOKEN = "token";
private static final String CA_CERT_DATA = "caCertData";
private static final String CLIENT_CERT_DATA = "clientCertData";
private static final String CLIENT_KEY_DATA = "clientKeyData";
private static final String HOST_NODES_INFO = "hostNodesInfo";
private static final String MISSING_MESSAGE = " is required in K8sApiConfig";
@Override
public ObjectNode encode(K8sApiConfig entity, CodecContext context) {
ObjectNode node = context.mapper().createObjectNode()
.put(CLUSTER_NAME, entity.clusterName())
.put(SEGMENT_ID, entity.segmentId())
.put(MODE, entity.mode().name())
.put(SCHEME, entity.scheme().name())
.put(IP_ADDRESS, entity.ipAddress().toString())
.put(PORT, entity.port())
.put(STATE, entity.state().name());
if (entity.scheme() == HTTPS) {
node.put(CA_CERT_DATA, entity.caCertData())
.put(CLIENT_CERT_DATA, entity.clientCertData())
.put(CLIENT_KEY_DATA, entity.clientKeyData());
if (entity.token() != null) {
node.put(TOKEN, entity.token());
}
} else {
if (entity.token() != null) {
node.put(TOKEN, entity.token());
}
if (entity.caCertData() != null) {
node.put(CA_CERT_DATA, entity.caCertData());
}
if (entity.clientCertData() != null) {
node.put(CLIENT_CERT_DATA, entity.clientCertData());
}
if (entity.clientKeyData() != null) {
node.put(CLIENT_KEY_DATA, entity.clientKeyData());
}
}
if (entity.extNetworkCidr() != null) {
node.put(EXT_NETWORK_CIDR, entity.extNetworkCidr().toString());
}
ArrayNode infos = context.mapper().createArrayNode();
entity.infos().forEach(info -> {
ObjectNode infoJson = context.codec(HostNodesInfo.class).encode(info, context);
infos.add(infoJson);
});
node.set(HOST_NODES_INFO, infos);
return node;
}
@Override
public K8sApiConfig decode(ObjectNode json, CodecContext context) {
if (json == null || !json.isObject()) {
return null;
}
JsonNode clusterNameJson = json.get(CLUSTER_NAME);
String clusterNameStr = "";
if (clusterNameJson == null) {
clusterNameStr = DEFAULT_CLUSTER_NAME;
} else {
clusterNameStr = clusterNameJson.asText();
}
JsonNode segmentIdJson = json.get(SEGMENT_ID);
int segmentId = DEFAULT_SEGMENT_ID;
if (segmentIdJson != null) {
segmentId = segmentIdJson.asInt();
}
JsonNode modeJson = json.get(MODE);
String modeStr = "";
if (modeJson == null) {
modeStr = DEFAULT_CONFIG_MODE;
} else {
modeStr = modeJson.asText();
}
Mode mode = Mode.valueOf(modeStr);
Scheme scheme = Scheme.valueOf(nullIsIllegal(
json.get(SCHEME).asText(), SCHEME + MISSING_MESSAGE));
IpAddress ipAddress = IpAddress.valueOf(nullIsIllegal(
json.get(IP_ADDRESS).asText(), IP_ADDRESS + MISSING_MESSAGE));
int port = json.get(PORT).asInt();
K8sApiConfig.Builder builder = DefaultK8sApiConfig.builder()
.clusterName(clusterNameStr)
.segmentId(segmentId)
.mode(mode)
.scheme(scheme)
.ipAddress(ipAddress)
.port(port)
.state(DISCONNECTED);
JsonNode tokenJson = json.get(TOKEN);
JsonNode caCertDataJson = json.get(CA_CERT_DATA);
JsonNode clientCertDataJson = json.get(CLIENT_CERT_DATA);
JsonNode clientKeyDataJson = json.get(CLIENT_KEY_DATA);
String token = "";
String caCertData = "";
String clientCertData = "";
String clientKeyData = "";
if (scheme == HTTPS) {
caCertData = nullIsIllegal(caCertDataJson.asText(),
CA_CERT_DATA + MISSING_MESSAGE);
clientCertData = nullIsIllegal(clientCertDataJson.asText(),
CLIENT_CERT_DATA + MISSING_MESSAGE);
clientKeyData = nullIsIllegal(clientKeyDataJson.asText(),
CLIENT_KEY_DATA + MISSING_MESSAGE);
if (tokenJson != null) {
token = tokenJson.asText();
}
} else {
if (tokenJson != null) {
token = tokenJson.asText();
}
if (caCertDataJson != null) {
caCertData = caCertDataJson.asText();
}
if (clientCertDataJson != null) {
clientCertData = clientCertDataJson.asText();
}
if (clientKeyDataJson != null) {
clientKeyData = clientKeyDataJson.asText();
}
}
if (StringUtils.isNotEmpty(token)) {
builder.token(token);
}
if (StringUtils.isNotEmpty(caCertData)) {
builder.caCertData(caCertData);
}
if (StringUtils.isNotEmpty(clientCertData)) {
builder.clientCertData(clientCertData);
}
if (StringUtils.isNotEmpty(clientKeyData)) {
builder.clientKeyData(clientKeyData);
}
JsonNode extNetworkCidrJson = json.get(EXT_NETWORK_CIDR);
if (extNetworkCidrJson != null) {
builder.extNetworkCidr(IpPrefix.valueOf(extNetworkCidrJson.asText()));
}
Set<HostNodesInfo> infos = new HashSet<>();
ArrayNode infosJson = (ArrayNode) json.get(HOST_NODES_INFO);
if (infosJson != null) {
for (JsonNode infoJson : infosJson) {
HostNodesInfo info = context.codec(HostNodesInfo.class)
.decode((ObjectNode) infoJson, context);
infos.add(info);
}
builder.infos(infos);
}
return builder.build();
}
}