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Avoid concurrency issue introduced by #1489

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This commit is contained in:
James Agnew 2019-09-25 13:45:02 -04:00
parent 21841aedff
commit dfe07e7a2b
1 changed files with 55 additions and 53 deletions
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90
hapi-fhir-base/src/main/java/ca/uhn/fhir/parser/BaseParser.java
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@ -27,7 +27,6 @@ import ca.uhn.fhir.model.primitive.IdDt;
import ca.uhn.fhir.rest.api.Constants;
import ca.uhn.fhir.rest.server.exceptions.InternalErrorException;
import ca.uhn.fhir.util.UrlUtil;
import com.google.common.base.Charsets;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.Validate;
@ -68,47 +67,6 @@ public abstract class BaseParser implements IParser {
private boolean mySuppressNarratives;
private Set<String> myDontStripVersionsFromReferencesAtPaths;
private Map<Key, List<CompositeChildElement>> compositeChildrenCache = new HashMap<>();
private static class Key {
private final BaseRuntimeElementCompositeDefinition<?> resDef;
private final boolean theContainedResource;
private final CompositeChildElement theParent;
private final EncodeContext theEncodeContext;
public Key(BaseRuntimeElementCompositeDefinition<?> resDef, final boolean theContainedResource, final CompositeChildElement theParent, EncodeContext theEncodeContext) {
this.resDef = resDef;
this.theContainedResource = theContainedResource;
this.theParent = theParent;
this.theEncodeContext = theEncodeContext;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((resDef == null) ? 0 : resDef.hashCode());
result = prime * result + (theContainedResource ? 1231 : 1237);
result = prime * result + ((theParent == null) ? 0 : theParent.hashCode());
result = prime * result + ((theEncodeContext == null) ? 0 : theEncodeContext.hashCode());
return result;
}
@Override
public boolean equals(final Object obj) {
if (this == obj) {
return true;
}
if (obj instanceof Key) {
final Key that = (Key) obj;
return Objects.equals(this.resDef, that.resDef) &&
this.theContainedResource == that.theContainedResource &&
Objects.equals(this.theParent, that.theParent) &&
Objects.equals(this.theEncodeContext, that.theEncodeContext);
}
return false;
}
}
/**
* Constructor
*/
@ -171,7 +129,7 @@ public abstract class BaseParser implements IParser {
protected Iterable<CompositeChildElement> compositeChildIterator(IBase theCompositeElement, final boolean theContainedResource, final CompositeChildElement theParent, EncodeContext theEncodeContext) {
BaseRuntimeElementCompositeDefinition<?> elementDef = (BaseRuntimeElementCompositeDefinition<?>) myContext.getElementDefinition(theCompositeElement.getClass());
return compositeChildrenCache.computeIfAbsent(new Key(elementDef, theContainedResource, theParent, theEncodeContext), (k) -> {
return theEncodeContext.getCompositeChildrenCache().computeIfAbsent(new Key(elementDef, theContainedResource, theParent, theEncodeContext), (k) -> {
final List<BaseRuntimeChildDefinition> children = elementDef.getChildrenAndExtension();
final List<CompositeChildElement> result = new ArrayList<>(children.size());
@ -1369,13 +1327,17 @@ public abstract class BaseParser implements IParser {
}
}
/**
* EncodeContext is a shared state object that is passed around the
* encode process
*/
protected class EncodeContext extends EncodeContextPath {
private final ArrayList<EncodeContextPathElement> myResourcePath = new ArrayList<>(10);
private final Map<Key, List<CompositeChildElement>> myCompositeChildrenCache = new HashMap<>();
public Map<Key, List<CompositeChildElement>> getCompositeChildrenCache() {
return myCompositeChildrenCache;
}
protected ArrayList<EncodeContextPathElement> getResourcePath() {
return myResourcePath;
@ -1508,6 +1470,46 @@ public abstract class BaseParser implements IParser {
}
}
private static class Key {
private final BaseRuntimeElementCompositeDefinition<?> resDef;
private final boolean theContainedResource;
private final CompositeChildElement theParent;
private final EncodeContext theEncodeContext;
public Key(BaseRuntimeElementCompositeDefinition<?> resDef, final boolean theContainedResource, final CompositeChildElement theParent, EncodeContext theEncodeContext) {
this.resDef = resDef;
this.theContainedResource = theContainedResource;
this.theParent = theParent;
this.theEncodeContext = theEncodeContext;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((resDef == null) ? 0 : resDef.hashCode());
result = prime * result + (theContainedResource ? 1231 : 1237);
result = prime * result + ((theParent == null) ? 0 : theParent.hashCode());
result = prime * result + ((theEncodeContext == null) ? 0 : theEncodeContext.hashCode());
return result;
}
@Override
public boolean equals(final Object obj) {
if (this == obj) {
return true;
}
if (obj instanceof Key) {
final Key that = (Key) obj;
return Objects.equals(this.resDef, that.resDef) &&
this.theContainedResource == that.theContainedResource &&
Objects.equals(this.theParent, that.theParent) &&
Objects.equals(this.theEncodeContext, that.theEncodeContext);
}
return false;
}
}
static class ContainedResources {
private long myNextContainedId = 1;