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package com.yahoo.metrics;
/**
* @author gjoranv
*/
public enum Unit {
BINARY(BaseUnit.BINARY, "Zero or one. Zero typically indicate \"false\" while one indicate \"true\""),
BUCKET(BaseUnit.BUCKET, "A chunk of documents managed by a distributor service"),
BYTE(BaseUnit.BYTE, "A collection of 8 bits"),
BYTE_PER_SECOND(BaseUnit.BYTE, BaseUnit.SECOND, "A unit of storage capable of holding 8 bits"),
CONNECTION(BaseUnit.CONNECTION, "A link used for communication between a client and a server"),
DOCUMENT(BaseUnit.DOCUMENT, "Vespa document, a collection of fields defined in a schema file"),
DOCUMENTID(BaseUnit.DOCUMENTID, "A unique document identifier"),
FAILURE(BaseUnit.FAILURE, "Failures, typically for requests, operations or nodes"),
FILE(BaseUnit.FILE, "Data file stored on the disk on a node"),
FRACTION(BaseUnit.FRACTION, "A value in the range [0..1]. Higher values can occur for some metrics, but would indicate the value is outside of the allowed range."),
HIT(BaseUnit.HIT, "Document that meets the filtering/restriction criteria specified by a given query"),
HIT_PER_QUERY(BaseUnit.HIT, BaseUnit.QUERY, "Number of hits per query over a period of time"),
INSTANCE(BaseUnit.INSTANCE, "Typically tenant or application"),
ITEM(BaseUnit.ITEM, "Object or unit maintained in e.g. a queue"),
MILLISECOND(BaseUnit.MILLISECOND, "Millisecond, 1/1000 of a second"),
NANOSECOND(BaseUnit.NANOSECOND, "Nanosecond, 1/1000.000.000 of a second"),
NODE(BaseUnit.NODE, "(Virtual) computer that is part of a Vespa cluster"),
PACKET(BaseUnit.PACKET, "Collection of data transmitted over the network as a single unit"),
OPERATION(BaseUnit.OPERATION, "A clearly defined task"),
OPERATION_PER_SECOND(BaseUnit.OPERATION, BaseUnit.SECOND, "Number of operations per second"),
PERCENTAGE(BaseUnit.PERCENTAGE, "A number expressed as a fraction of 100. Typically in the range [0..100]."),
QUERY(BaseUnit.QUERY, "A request for matching, grouping and/or scoring documents stored in Vespa"),
QUERY_PER_SECOND(BaseUnit.QUERY, BaseUnit.SECOND, "Number of queries per second."),
RECORD(BaseUnit.RECORD, "A collection of information, typically a set of key/value, e.g. stored in a transaction log"),
REQUEST(BaseUnit.REQUEST, "A request sent from a client to a server"),
RESPONSE(BaseUnit.RESPONSE, "A response from a server to a client, typically as a response to a request"),
RESTART(BaseUnit.RESTART, "A service or node restarts"),
SCORE(BaseUnit.SCORE, "Relevance score for a document"),
SECOND(BaseUnit.SECOND, "Time span of 1 second"),
SESSION(BaseUnit.SESSION, "A set of operations taking place during one connection or as part of a higher level operation"),
TASK(BaseUnit.TASK, "Piece of work executed by a server, e.g. to perform back-ground data maintenance"),
THREAD(BaseUnit.THREAD, "Computer thread for executing e.g. tasks, operations or queries"),
VERSION(BaseUnit.VERSION, "Software or config version"),
WAKEUP(BaseUnit.WAKEUP, "Computer thread wake-ups for doing some work");
private final BaseUnit unit;
private final BaseUnit perUnit;
private final String description;
Unit(BaseUnit unit, String description) {
this(unit, null, description);
}
Unit(BaseUnit unit, BaseUnit perUnit, String description) {
this.unit = unit;
this.perUnit = perUnit;
this.description = description;
}
public String fullName() {
return perUnit == null ?
unit.fullName() :
unit.fullName() + "/" + perUnit.fullName();
}
public String shortName() {
return perUnit == null ?
unit.shortName :
unit.shortName + "/" + perUnit.shortName;
}
public String getDescription() {
return description;
}
private enum BaseUnit {
AREA("area"),
BINARY("binary"),
BUCKET("bucket"),
BYTE("byte"),
CONNECTION("connection"),
DOCUMENT("document"),
DOCUMENTID("documentid"),
FAILURE("failure"),
FILE("file"),
FRACTION("fraction"),
HIT("hit"),
INSTANCE("instance"),
ITEM("item"),
MILLISECOND("millisecond", "ms"),
NANOSECOND("nanosecond", "ns"),
NODE("node"),
OPERATION("operation"),
PACKET("packet"),
PERCENTAGE("percentage"),
QUERY("query"),
RECORD("record"),
REQUEST("request"),
RESPONSE("response"),
RESTART("restart"),
SCORE("score"),
SECOND("second", "s"),
SESSION("session"),
TASK("task"),
THREAD("thread"),
VERSION("version"),
WAKEUP("wakeup");
private final String fullName;
private final String shortName;
BaseUnit(String fullName) {
this(fullName, fullName);
}
BaseUnit(String fullName, String shortName) {
this.fullName = fullName;
this.shortName = shortName;
}
public String fullName() {
return fullName;
}
public String shortName() {
return shortName;
}
}
}
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