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Breadcrumbs.java
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Breadcrumbs.java
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package com.bugsnag.android;
import com.bugsnag.android.ndk.NativeBridge;
import android.support.annotation.NonNull;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;
import java.util.Observable;
import java.util.Queue;
import java.util.concurrent.ConcurrentLinkedQueue;
class Breadcrumbs extends Observable implements JsonStream.Streamable {
private static final int MAX_PAYLOAD_SIZE = 4096;
final Queue<Breadcrumb> store = new ConcurrentLinkedQueue<>();
private final Configuration configuration;
Breadcrumbs(Configuration configuration) {
this.configuration = configuration;
}
@Override
public void toStream(@NonNull JsonStream writer) throws IOException {
pruneBreadcrumbs();
writer.beginArray();
for (Breadcrumb breadcrumb : store) {
breadcrumb.toStream(writer);
}
writer.endArray();
}
void add(@NonNull Breadcrumb breadcrumb) {
addToStore(breadcrumb);
}
void clear() {
store.clear();
setChanged();
notifyObservers(new NativeBridge.Message(
NativeBridge.MessageType.CLEAR_BREADCRUMBS, null));
}
private void addToStore(@NonNull Breadcrumb breadcrumb) {
try {
if (breadcrumb.payloadSize() > MAX_PAYLOAD_SIZE) {
Logger.warn("Dropping breadcrumb because payload exceeds 4KB limit");
return;
}
store.add(breadcrumb);
pruneBreadcrumbs();
setChanged();
List<Object> breadcrumbValues = Arrays.asList(
breadcrumb.getName(),
breadcrumb.getType().toString(),
breadcrumb.getTimestamp(),
breadcrumb.getMetadata()
);
notifyObservers(new NativeBridge.Message(
NativeBridge.MessageType.ADD_BREADCRUMB, breadcrumbValues));
} catch (IOException ex) {
Logger.warn("Dropping breadcrumb because it could not be serialized", ex);
}
}
private void pruneBreadcrumbs() {
int maxBreadcrumbs = configuration.getMaxBreadcrumbs();
// Remove oldest breadcrumbs until new max size reached
while (store.size() > maxBreadcrumbs) {
store.poll();
}
}
}