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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "removeoperation.h"
#include <vespa/storageapi/message/persistence.h>
#include <vespa/storage/distributor/distributor_bucket_space.h>
#include <vespa/vdslib/state/clusterstate.h>
#include <vespa/log/log.h>
LOG_SETUP(".distributor.operations.external.remove");
using document::BucketSpace;
namespace storage::distributor {
RemoveOperation::RemoveOperation(const DistributorNodeContext& node_ctx,
DistributorStripeOperationContext& op_ctx,
DistributorBucketSpace& bucketSpace,
std::shared_ptr<api::RemoveCommand> msg,
PersistenceOperationMetricSet& metric,
PersistenceOperationMetricSet& condition_probe_metrics,
SequencingHandle sequencingHandle)
: SequencedOperation(std::move(sequencingHandle)),
_tracker(metric, std::make_shared<api::RemoveReply>(*msg), node_ctx, op_ctx, _cancel_scope),
_msg(std::move(msg)),
_doc_id_bucket_id(document::BucketIdFactory{}.getBucketId(_msg->getDocumentId())),
_node_ctx(node_ctx),
_op_ctx(op_ctx),
_condition_probe_metrics(condition_probe_metrics),
_bucket_space(bucketSpace),
_check_condition()
{
}
RemoveOperation::~RemoveOperation() = default;
void RemoveOperation::onStart(DistributorStripeMessageSender& sender) {
LOG(spam, "Received remove on document %s", _msg->getDocumentId().toString().c_str());
if (!has_condition()) {
start_direct_remove_dispatch(sender);
} else {
start_conditional_remove(sender);
}
}
void RemoveOperation::start_conditional_remove(DistributorStripeMessageSender& sender) {
document::Bucket bucket(_msg->getBucket().getBucketSpace(), _doc_id_bucket_id);
_check_condition = CheckCondition::create_if_inconsistent_replicas(bucket, _bucket_space, _msg->getDocumentId(),
_msg->getCondition(), _node_ctx, _op_ctx,
_condition_probe_metrics, _msg->getTrace().getLevel());
if (!_check_condition) {
start_direct_remove_dispatch(sender);
} else {
// Inconsistent replicas; need write repair
_check_condition->start_and_send(sender);
auto& outcome = _check_condition->maybe_outcome(); // Might be done immediately
if (outcome) {
on_completed_check_condition(*outcome, sender);
}
}
}
void RemoveOperation::start_direct_remove_dispatch(DistributorStripeMessageSender& sender) {
LOG(spam, "Started remove on document %s", _msg->getDocumentId().toString().c_str());
document::BucketId bucketId(_node_ctx.bucket_id_factory().getBucketId(_msg->getDocumentId()));
std::vector<BucketDatabase::Entry> entries;
_bucket_space.getBucketDatabase().getParents(bucketId, entries);
bool sent = false;
for (const BucketDatabase::Entry& e : entries) {
std::vector<MessageTracker::ToSend> messages;
messages.reserve(e->getNodeCount());
for (uint32_t i = 0; i < e->getNodeCount(); i++) {
auto command = std::make_shared<api::RemoveCommand>(document::Bucket(_msg->getBucket().getBucketSpace(), e.getBucketId()),
_msg->getDocumentId(), _msg->getTimestamp());
copyMessageSettings(*_msg, *command);
command->getTrace().setLevel(_msg->getTrace().getLevel());
command->setCondition(_msg->getCondition());
messages.emplace_back(std::move(command), e->getNodeRef(i).getNode());
sent = true;
}
_tracker.queueMessageBatch(std::move(messages));
}
if (!sent) {
LOG(debug,
"Remove document %s failed since no available nodes found. "
"System state is %s",
_msg->getDocumentId().toString().c_str(),
_bucket_space.getClusterState().toString().c_str());
_tracker.fail(sender, api::ReturnCode(api::ReturnCode::OK));
} else {
_tracker.flushQueue(sender);
}
};
void
RemoveOperation::onReceive(DistributorStripeMessageSender& sender, const std::shared_ptr<api::StorageReply> & msg)
{
if (_check_condition) {
_check_condition->handle_reply(sender, msg);
auto& outcome = _check_condition->maybe_outcome();
if (!outcome) {
return; // Condition check not done yet
}
return on_completed_check_condition(*outcome, sender);
}
auto& reply = static_cast<api::RemoveReply&>(*msg);
if (_tracker.getReply().get()) {
api::RemoveReply& replyToSend =
static_cast<api::RemoveReply&>(*_tracker.getReply());
if (reply.getOldTimestamp() > replyToSend.getOldTimestamp()) {
replyToSend.setOldTimestamp(reply.getOldTimestamp());
}
}
_tracker.receiveReply(sender, reply);
}
void RemoveOperation::on_completed_check_condition(CheckCondition::Outcome& outcome,
DistributorStripeMessageSender& sender)
{
if (!outcome.trace().isEmpty()) {
_tracker.add_trace_tree_to_reply(outcome.steal_trace());
}
if (outcome.matched_condition()) {
_msg->clear_condition(); // Transform to unconditional Remove
start_direct_remove_dispatch(sender);
} else if (outcome.not_found()) {
// TODO "not found" not a TaS error...
_tracker.fail(sender, api::ReturnCode(api::ReturnCode::TEST_AND_SET_CONDITION_FAILED,
"Document does not exist"));
} else if (outcome.failed()) {
api::ReturnCode wrapped_error(outcome.error_code().getResult(),
"Failed during write repair condition probe step. Reason: " + outcome.error_code().getMessage());
_tracker.fail(sender, wrapped_error);
} else {
_tracker.fail(sender, api::ReturnCode(api::ReturnCode::TEST_AND_SET_CONDITION_FAILED,
"Condition did not match document"));
}
_check_condition.reset();
}
void
RemoveOperation::onClose(DistributorStripeMessageSender& sender)
{
if (_check_condition) {
_check_condition->close(sender);
}
_tracker.fail(sender, api::ReturnCode(api::ReturnCode::ABORTED, "Process is shutting down"));
}
void
RemoveOperation::on_cancel(DistributorStripeMessageSender& sender, const CancelScope& cancel_scope)
{
if (_check_condition) {
_check_condition->cancel(sender, cancel_scope);
}
}
bool RemoveOperation::has_condition() const noexcept {
return _msg->hasTestAndSetCondition();
}
}
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