package org.opendaylight.controller.cluster.datastore.identifiers;
import com.google.common.base.Preconditions;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import org.opendaylight.controller.cluster.access.concepts.MemberName;
public class ShardIdentifier {
+ // This pattern needs to remain in sync with toString(), which produces
+ // strings with corresponding to "%s-shard-%s-%s"
+ private static final Pattern PATTERN = Pattern.compile("(\\S+)-shard-(\\S+)-(\\S+)");
+
private final String shardName;
- private final String memberName;
+ private final MemberName memberName;
private final String type;
+ private final String fullName;
+
+ private ShardIdentifier(String shardName, MemberName memberName, String type) {
+ this.shardName = Preconditions.checkNotNull(shardName, "shardName should not be null");
+ this.memberName = Preconditions.checkNotNull(memberName, "memberName should not be null");
+ this.type = Preconditions.checkNotNull(type, "type should not be null");
+ fullName = memberName.getName() + "-shard-" + shardName + "-" + type;
+ }
- public ShardIdentifier(String shardName, String memberName, String type) {
+ public static ShardIdentifier create(final String shardName, final MemberName memberName, final String type) {
+ return new ShardIdentifier(shardName, memberName, type);
+ }
- Preconditions.checkNotNull(shardName, "shardName should not be null");
- Preconditions.checkNotNull(memberName, "memberName should not be null");
- Preconditions.checkNotNull(type, "type should not be null");
+ public static ShardIdentifier fromShardIdString(final String shardIdString) {
+ final Matcher matcher = PATTERN.matcher(shardIdString);
+ Preconditions.checkArgument(matcher.matches(), "Invalid shard id \"%s\"", shardIdString);
- this.shardName = shardName;
- this.memberName = memberName;
- this.type = type;
+ return new ShardIdentifier(matcher.group(2), MemberName.forName(matcher.group(1)), matcher.group(3));
}
@Override
- public boolean equals(Object o) {
- if (this == o) {
+ public boolean equals(Object obj) {
+ if (this == obj) {
return true;
}
- if (o == null || getClass() != o.getClass()) {
+ if (obj == null || getClass() != obj.getClass()) {
return false;
}
- ShardIdentifier that = (ShardIdentifier) o;
+ ShardIdentifier that = (ShardIdentifier) obj;
if (!memberName.equals(that.memberName)) {
return false;
return result;
}
- @Override public String toString() {
- StringBuilder builder = new StringBuilder();
- builder.append(memberName).append("-shard-").append(shardName).append("-").append(type);
- return builder.toString();
+ @Override
+ public String toString() {
+ // ensure the output of toString matches the pattern above
+ return fullName;
+ }
+
+ public String getShardName() {
+ return shardName;
+ }
+
+ public MemberName getMemberName() {
+ return memberName;
}
- public static Builder builder(){
- return new Builder();
+ public String getType() {
+ return type;
}
public static class Builder {
private String shardName;
- private String memberName;
+ private MemberName memberName;
private String type;
- public ShardIdentifier build(){
+ public ShardIdentifier build() {
return new ShardIdentifier(shardName, memberName, type);
}
- public Builder shardName(String shardName){
- this.shardName = shardName;
+ public Builder shardName(String newShardName) {
+ this.shardName = newShardName;
return this;
}
- public Builder memberName(String memberName){
- this.memberName = memberName;
+ public Builder memberName(MemberName newMemberName) {
+ this.memberName = newMemberName;
return this;
}
- public Builder type(String type){
- this.type = type;
+ public Builder type(String newType) {
+ this.type = newType;
return this;
}
+ public Builder fromShardIdString(String shardId) {
+ Matcher matcher = PATTERN.matcher(shardId);
+
+ if (matcher.matches()) {
+ memberName = MemberName.forName(matcher.group(1));
+ shardName = matcher.group(2);
+ type = matcher.group(3);
+ }
+ return this;
+ }
}
}