zipkin2.CheckResult Maven / Gradle / Ivy
/*
* Copyright The OpenZipkin Authors
* SPDX-License-Identifier: Apache-2.0
*/
package zipkin2;
import zipkin2.internal.Nullable;
/**
* Answers the question: Are operations on this component likely to succeed?
*
* Implementations should initialize the component if necessary. It should test a remote
* connection, or consult a trusted source to derive the result. They should use least resources
* possible to establish a meaningful result, and be safe to call many times, even concurrently.
*
* @see CheckResult#OK
*/
// @Immutable
public final class CheckResult {
public static final CheckResult OK = new CheckResult(true, null);
public static CheckResult failed(Throwable error) {
return new CheckResult(false, error);
}
public boolean ok() {
return ok;
}
/** Present when not ok */
@Nullable
public Throwable error() {
return error;
}
final boolean ok;
final Throwable error;
CheckResult(boolean ok, @Nullable Throwable error) {
this.ok = ok;
this.error = error;
}
@Override
public String toString() {
return "CheckResult{ok=" + ok + ", " + "error=" + error + "}";
}
}