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core: ClientCallImpl start should not be called after cancel 

Added checkState for this condition.
This commit is contained in:
ZHANG Dapeng 2017-09-11 09:45:07 -07:00 committed by GitHub
parent b8b5f5e046
commit 65530bb71b
1 changed files with 9 additions and 9 deletions
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18
core/src/main/java/io/grpc/internal/ClientCallImpl.java
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@ -28,7 +28,6 @@ import static io.grpc.internal.GrpcUtil.TIMEOUT_KEY;
import static java.lang.Math.max;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Preconditions;
import io.grpc.Attributes;
import io.grpc.CallOptions;
import io.grpc.ClientCall;
@ -146,6 +145,7 @@ final class ClientCallImpl<ReqT, RespT> extends ClientCall<ReqT, RespT> {
@Override
public void start(final Listener<RespT> observer, Metadata headers) {
checkState(stream == null, "Already started");
checkState(!cancelCalled, "call was cancelled");
checkNotNull(observer, "observer");
checkNotNull(headers, "headers");
@ -336,7 +336,7 @@ final class ClientCallImpl<ReqT, RespT> extends ClientCall<ReqT, RespT> {
@Override
public void request(int numMessages) {
Preconditions.checkState(stream != null, "Not started");
checkState(stream != null, "Not started");
checkArgument(numMessages >= 0, "Number requested must be non-negative");
stream.request(numMessages);
}
@ -371,18 +371,18 @@ final class ClientCallImpl<ReqT, RespT> extends ClientCall<ReqT, RespT> {
@Override
public void halfClose() {
Preconditions.checkState(stream != null, "Not started");
Preconditions.checkState(!cancelCalled, "call was cancelled");
Preconditions.checkState(!halfCloseCalled, "call already half-closed");
checkState(stream != null, "Not started");
checkState(!cancelCalled, "call was cancelled");
checkState(!halfCloseCalled, "call already half-closed");
halfCloseCalled = true;
stream.halfClose();
}
@Override
public void sendMessage(ReqT message) {
Preconditions.checkState(stream != null, "Not started");
Preconditions.checkState(!cancelCalled, "call was cancelled");
Preconditions.checkState(!halfCloseCalled, "call was half-closed");
checkState(stream != null, "Not started");
checkState(!cancelCalled, "call was cancelled");
checkState(!halfCloseCalled, "call was half-closed");
try {
// TODO(notcarl): Find out if messageIs needs to be closed.
InputStream messageIs = method.streamRequest(message);
@ -427,7 +427,7 @@ final class ClientCallImpl<ReqT, RespT> extends ClientCall<ReqT, RespT> {
private boolean closed;
public ClientStreamListenerImpl(Listener<RespT> observer) {
this.observer = Preconditions.checkNotNull(observer, "observer");
this.observer = checkNotNull(observer, "observer");
}
@Override