zipkin2.storage.QueryRequest Maven / Gradle / Ivy
/*
* Copyright The OpenZipkin Authors
* SPDX-License-Identifier: Apache-2.0
*/
package zipkin2.storage;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import zipkin2.Annotation;
import zipkin2.Span;
import zipkin2.internal.Nullable;
/**
* Invoking this request retrieves traces matching the below filters.
*
* Results should be filtered against {@link #endTs}, subject to {@link #limit} and {@link
* #lookback}. For example, if endTs is 10:20 today, limit is 10, and lookback is 7 days, traces
* returned should be those nearest to 10:20 today, not 10:20 a week ago.
*
*
Time units of {@link #endTs} and {@link #lookback} are milliseconds as opposed to
* microseconds, the grain of {@link Span#timestamp()}. Milliseconds is a more familiar and
* supported granularity for query, index and windowing functions.
*/
public final class QueryRequest {
/**
* When present, corresponds to the {@link Span#localServiceName() local service name} and
* constrains all other parameters.
*
* @see ServiceAndSpanNames#getServiceNames()
*/
@Nullable public String serviceName() {
return serviceName;
}
/**
* When present, only include traces with this {@link Span#remoteServiceName() remote service
* name}.
*
* @see ServiceAndSpanNames#getRemoteServiceNames(String)
*/
@Nullable public String remoteServiceName() {
return remoteServiceName;
}
/**
* When present, only include traces with this {@link Span#name()}
*
* @see ServiceAndSpanNames#getSpanNames(String)
*/
@Nullable public String spanName() {
return spanName;
}
/**
* When an input value is the empty string, include traces whose {@link Span#annotations()}
* include a value in this set, or where {@link Span#tags()} include a key is in this set. When
* not, include traces whose {@link Span#tags()} an entry in this map.
*
*
Multiple entries are combined with AND, and AND against other conditions.
*/
public Map annotationQuery() {
return annotationQuery;
}
/**
* Only return traces whose {@link Span#duration()} is greater than or equal to minDuration
* microseconds.
*/
@Nullable public Long minDuration() {
return minDuration;
}
/**
* Only return traces whose {@link Span#duration()} is less than or equal to maxDuration
* microseconds. Only valid with {@link #minDuration}.
*/
@Nullable public Long maxDuration() {
return maxDuration;
}
/**
* Only return traces where all {@link Span#timestamp()} are at or before this time in epoch
* milliseconds. Defaults to current time.
*/
public long endTs() {
return endTs;
}
/**
* Only return traces where all {@link Span#timestamp()} are at or after (endTs - lookback) in
* milliseconds. Defaults to endTs.
*/
public long lookback() {
return lookback;
}
/** Maximum number of traces to return. Defaults to 10 */
public int limit() {
return limit;
}
/**
* Corresponds to query parameter "annotationQuery". Ex. "http.method=GET and error"
*
* @see QueryRequest.Builder#parseAnnotationQuery(String)
*/
@Nullable public String annotationQueryString() {
StringBuilder result = new StringBuilder();
for (Iterator> i = annotationQuery().entrySet().iterator();
i.hasNext(); ) {
Map.Entry next = i.next();
if (next.getKey().isEmpty()) {
continue; // Values can be empty, but keys cannot. Don't err as we didn't before.
}
result.append(next.getKey());
if (!next.getValue().isEmpty()) result.append('=').append(next.getValue());
if (i.hasNext()) result.append(" and ");
}
return result.length() > 0 ? result.toString() : null;
}
public Builder toBuilder() {
return new Builder(this);
}
public static Builder newBuilder() {
return new Builder();
}
public static final class Builder {
String serviceName, remoteServiceName, spanName;
Map annotationQuery = Collections.emptyMap();
Long minDuration, maxDuration;
long endTs, lookback;
int limit;
Builder(QueryRequest source) {
serviceName = source.serviceName;
remoteServiceName = source.remoteServiceName;
spanName = source.spanName;
annotationQuery = source.annotationQuery;
minDuration = source.minDuration;
maxDuration = source.maxDuration;
endTs = source.endTs;
lookback = source.lookback;
limit = source.limit;
}
/** Sets {@link QueryRequest#serviceName()} */
public Builder serviceName(@Nullable String serviceName) {
this.serviceName = serviceName;
return this;
}
/** Sets {@link QueryRequest#remoteServiceName()} */
public Builder remoteServiceName(@Nullable String remoteServiceName) {
this.remoteServiceName = remoteServiceName;
return this;
}
/**
* This ignores the reserved span name "all".
*
* @see QueryRequest#spanName()
*/
public Builder spanName(@Nullable String spanName) {
this.spanName = spanName;
return this;
}
/**
* Corresponds to query parameter "annotationQuery". Ex. "http.method=GET and error". Parameter
* keys and values are trimmed.
*
* @see QueryRequest#annotationQueryString()
*/
public Builder parseAnnotationQuery(@Nullable String annotationQuery) {
if (annotationQuery == null || annotationQuery.isEmpty()) return this;
Map map = new LinkedHashMap<>();
for (String ann : annotationQuery.split(" and ", 100)) {
int idx = ann.indexOf('=');
if (idx == -1) {
// put the annotation only if there is no key present already, prevents overriding more specific tags
ann = ann.trim();
if (!map.containsKey(ann)) map.put(ann, "");
} else {
// tag
String[] keyValue = ann.split("=", 2);
// tags are put regardless, i.e. last tag wins
map.put(ann.substring(0, idx).trim(),
keyValue.length < 2 ? "" : ann.substring(idx + 1).trim());
}
}
return annotationQuery(map);
}
/** Sets {@link QueryRequest#annotationQuery()} */
public Builder annotationQuery(Map annotationQuery) {
if (annotationQuery == null) throw new NullPointerException("annotationQuery == null");
this.annotationQuery = annotationQuery;
return this;
}
/** Sets {@link QueryRequest#minDuration()} */
public Builder minDuration(@Nullable Long minDuration) {
this.minDuration = minDuration;
return this;
}
/** Sets {@link QueryRequest#maxDuration()} */
public Builder maxDuration(@Nullable Long maxDuration) {
this.maxDuration = maxDuration;
return this;
}
/** Sets {@link QueryRequest#endTs()} */
public Builder endTs(long endTs) {
this.endTs = endTs;
return this;
}
/** Sets {@link QueryRequest#lookback()} */
public Builder lookback(long lookback) {
this.lookback = lookback;
return this;
}
/** Sets {@link QueryRequest#limit()} */
public Builder limit(int limit) {
this.limit = limit;
return this;
}
public QueryRequest build() {
// coerce service and span names to lowercase
if (serviceName != null) serviceName = serviceName.toLowerCase(Locale.ROOT);
if (remoteServiceName != null) remoteServiceName = remoteServiceName.toLowerCase(Locale.ROOT);
if (spanName != null) spanName = spanName.toLowerCase(Locale.ROOT);
if ("".equals(serviceName)) serviceName = null;
if ("".equals(remoteServiceName)) remoteServiceName = null;
if ("".equals(spanName) || "all".equals(spanName)) spanName = null;
if (endTs <= 0) throw new IllegalArgumentException("endTs <= 0");
if (limit <= 0) throw new IllegalArgumentException("limit <= 0");
if (lookback <= 0) throw new IllegalArgumentException("lookback <= 0");
if (minDuration != null) {
if (minDuration <= 0) throw new IllegalArgumentException("minDuration <= 0");
if (maxDuration != null && maxDuration < minDuration) {
throw new IllegalArgumentException("maxDuration < minDuration");
}
} else if (maxDuration != null) {
throw new IllegalArgumentException("maxDuration is only valid with minDuration");
}
return new QueryRequest(
serviceName,
remoteServiceName,
spanName,
annotationQuery,
minDuration,
maxDuration,
endTs,
lookback,
limit
);
}
Builder() {
}
}
/**
* Tests the supplied trace against the current request.
*
* This is used when the backend cannot fully refine a trace query.
*/
public boolean test(List spans) {
// v2 returns raw spans in any order, get the root's timestamp or the first timestamp
long timestamp = 0L;
for (Span span : spans) {
if (span.timestampAsLong() == 0L) continue;
if (span.parentId() == null) {
timestamp = span.timestampAsLong();
break;
}
if (timestamp == 0L || timestamp > span.timestampAsLong()) {
timestamp = span.timestampAsLong();
}
}
if (timestamp == 0L ||
timestamp < (endTs() - lookback()) * 1000 ||
timestamp > endTs() * 1000) {
return false;
}
boolean testedDuration = minDuration() == null && maxDuration() == null;
String serviceNameToMatch = serviceName();
String remoteServiceNameToMatch = remoteServiceName();
String spanNameToMatch = spanName();
Map annotationQueryRemaining = new LinkedHashMap<>(annotationQuery());
for (Span span : spans) {
String localServiceName = span.localServiceName();
// service name, when present, constrains other queries.
if (serviceName() == null || serviceName().equals(localServiceName)) {
serviceNameToMatch = null;
for (Annotation a : span.annotations()) {
if ("".equals(annotationQueryRemaining.get(a.value()))) {
annotationQueryRemaining.remove(a.value());
}
}
for (Map.Entry t : span.tags().entrySet()) {
String value = annotationQueryRemaining.get(t.getKey());
if (value == null) continue;
if (value.isEmpty() || value.equals(t.getValue())) {
annotationQueryRemaining.remove(t.getKey());
}
}
if (remoteServiceNameToMatch != null && remoteServiceNameToMatch.equals(
span.remoteServiceName())) {
remoteServiceNameToMatch = null;
}
if (spanNameToMatch != null && spanNameToMatch.equals(span.name())) {
spanNameToMatch = null;
}
if (!testedDuration) {
if (minDuration() != null && maxDuration() != null) {
testedDuration =
span.durationAsLong() >= minDuration() && span.durationAsLong() <= maxDuration();
} else if (minDuration() != null) {
testedDuration = span.durationAsLong() >= minDuration();
}
}
}
}
return (serviceName() == null || serviceNameToMatch == null)
&& remoteServiceNameToMatch == null
&& spanNameToMatch == null
&& annotationQueryRemaining.isEmpty()
&& testedDuration;
}
final String serviceName, remoteServiceName, spanName;
final Map annotationQuery;
final Long minDuration, maxDuration;
final long endTs, lookback;
final int limit;
QueryRequest(
@Nullable String serviceName,
@Nullable String remoteServiceName,
@Nullable String spanName,
Map annotationQuery,
@Nullable Long minDuration,
@Nullable Long maxDuration,
long endTs,
long lookback,
int limit) {
this.serviceName = serviceName;
this.remoteServiceName = remoteServiceName;
this.spanName = spanName;
this.annotationQuery = annotationQuery;
this.minDuration = minDuration;
this.maxDuration = maxDuration;
this.endTs = endTs;
this.lookback = lookback;
this.limit = limit;
}
@Override public String toString() {
String result = "QueryRequest{";
result += ("endTs=" + endTs + ", ");
result += ("lookback=" + lookback + ", ");
if (serviceName != null) result += ("serviceName=" + serviceName + ", ");
if (remoteServiceName != null) result += ("remoteServiceName=" + remoteServiceName + ", ");
if (spanName != null) result += ("spanName=" + spanName + ", ");
if (!annotationQuery.isEmpty()) result += ("annotationQuery=" + annotationQuery + ", ");
if (minDuration != null) result += ("minDuration=" + minDuration + ", ");
if (maxDuration != null) result += ("maxDuration=" + maxDuration + ", ");
return result + "limit=" + limit + "}";
}
}