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org.pageseeder.flint.solr.ClusterStatus Maven / Gradle / Ivy
package org.pageseeder.flint.solr;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.apache.solr.common.util.NamedList;
import org.pageseeder.xmlwriter.XMLWritable;
import org.pageseeder.xmlwriter.XMLWriter;
public class ClusterStatus implements XMLWritable {
private List collections = new ArrayList<>();
private List liveNodes = new ArrayList<>();
@SuppressWarnings("unchecked")
public static ClusterStatus fromNamedList(NamedList list) {
ClusterStatus status = new ClusterStatus();
NamedList cols = (NamedList) list.get("collections");
if (cols != null) for (int i = 0; i < cols.size(); i++) {
status.collections.add(Collection.fromMap(cols.getName(i), (Map) cols.getVal(i)));
}
List nodes = (List) list.get("live_nodes");
if (nodes != null) for (Object node : nodes) {
status.liveNodes.add(node.toString());
}
return status;
}
@Override
public void toXML(XMLWriter xml) throws IOException {
xml.openElement("cluster");
xml.openElement("collections");
for (Collection c : this.collections) c.toXML(xml);
xml.closeElement();
xml.openElement("live-nodes");
for (String ln : this.liveNodes) {
xml.openElement("live-node");
xml.attribute("url", ln);
xml.closeElement();
}
xml.closeElement();
xml.closeElement();
}
private final static class Collection implements XMLWritable {
private String name;
private String routerName;
private String routerField;
private int replicationFactor = -1;
private int maxShardsPerNode = -1;
private boolean autoAddReplicas;
private List shards = new ArrayList<>();
@SuppressWarnings("unchecked")
public static Collection fromMap(String aname, Map col) {
Collection created = new Collection();
if (col == null || aname == null) return created;
created.name = aname;
created.autoAddReplicas = "true".equals(col.get("autoAddReplicas"));
created.maxShardsPerNode = col.get("maxShardsPerNode") == null ? -1 : Integer.parseInt((String) col.get("maxShardsPerNode"));
created.replicationFactor = col.get("replicationFactor") == null ? -1 : Integer.parseInt((String) col.get("replicationFactor"));
created.routerName = col.get("router") == null ? null : (String) ((Map) col.get("router")).get("name");
created.routerField = col.get("router") == null ? null : (String) ((Map) col.get("router")).get("field");
Map theshards = (Map) col.get("shards");
if (theshards != null) for (String name : theshards.keySet()) {
created.shards.add(Shard.fromMap(name, (Map) theshards.get(name)));
}
return created;
}
@Override
public void toXML(XMLWriter xml) throws IOException {
xml.openElement("collection");
attribute("name", this.name, xml);
attribute("router-name", this.routerName, xml);
attribute("router-field", this.routerField, xml);
if (this.replicationFactor >= 0) xml.attribute("replication-factor", this.replicationFactor);
if (this.maxShardsPerNode >= 0) xml.attribute("max-shards-per-node", this.maxShardsPerNode);
xml.attribute("auto-add-replicas", this.autoAddReplicas ? "true" : "false");
for (Shard s : this.shards) s.toXML(xml);
xml.closeElement();
}
}
private final static class Shard implements XMLWritable {
private String name;
private String state;
private List replicas = new ArrayList<>();
@SuppressWarnings("unchecked")
public static Shard fromMap(String aname, Map col) {
Shard created = new Shard();
created.name = aname;
created.state = (String) col.get("state");
Map thereplicas = (Map) col.get("replicas");
if (thereplicas != null) for (String name : thereplicas.keySet()) {
created.replicas.add(Replica.fromMap(name, (Map) thereplicas.get(name)));
}
return created;
}
@Override
public void toXML(XMLWriter xml) throws IOException {
xml.openElement("shard");
attribute("name", this.name, xml);
attribute("state", this.state, xml);
for (Replica r : this.replicas) r.toXML(xml);
xml.closeElement();
}
}
private final static class Replica implements XMLWritable {
private String name;
private String core;
private String url;
private String nodeName;
private String state;
private boolean leader;
public static Replica fromMap(String aname, Map col) {
Replica created = new Replica();
created.name = aname;
created.core = (String) col.get("core");
created.url = (String) col.get("base_url");
created.nodeName = (String) col.get("node_name");
created.state = (String) col.get("state");
created.leader = ("true").equals(col.get("leader"));
return created;
}
@Override
public void toXML(XMLWriter xml) throws IOException {
xml.openElement("replica");
attribute("name", this.name, xml);
attribute("core", this.core, xml);
attribute("url", this.url, xml);
attribute("node-name", this.nodeName, xml);
attribute("state", this.state, xml);
attribute("leader", this.leader ? "true" : "false", xml);
xml.closeElement();
}
}
private static void attribute(String name, String value, XMLWriter xml) throws IOException {
if (name != null && value != null && !name.isEmpty() && !value.isEmpty())
xml.attribute(name, value);
}
}
