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/*
* Copyright 2019 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "helper.hpp"
#include "status.hpp"
#include "tool_errors.hpp"
#include <chrono>
#include <ipmiblob/blob_errors.hpp>
#include <thread>
namespace host_tool
{
/* Poll an open verification session. Handling closing the session is not yet
* owned by this method.
*/
bool pollStatus(std::uint16_t session, ipmiblob::BlobInterface* blob)
{
using namespace std::chrono_literals;
static constexpr auto verificationSleep = 5s;
ipmi_flash::ActionStatus result = ipmi_flash::ActionStatus::unknown;
try
{
/* sleep for 5 seconds and check 125 times, for a timeout of: 625
* seconds.
* TODO: make this command line configurable and provide smaller
* default value.
*/
static constexpr int commandAttempts = 125;
int attempts = 0;
bool exitLoop = false;
/* Reach back the current status from the verification service output.
*/
while (attempts++ < commandAttempts)
{
ipmiblob::StatResponse resp = blob->getStat(session);
if (resp.metadata.size() != sizeof(std::uint8_t))
{
/* TODO: How do we want to handle the verification failures,
* because closing the session to the verify blob has a special
* as-of-yet not fully defined behavior.
*/
std::fprintf(stderr, "Received invalid metadata response!!!\n");
}
result = static_cast<ipmi_flash::ActionStatus>(resp.metadata[0]);
switch (result)
{
case ipmi_flash::ActionStatus::failed:
std::fprintf(stderr, "failed\n");
exitLoop = true;
break;
case ipmi_flash::ActionStatus::unknown:
std::fprintf(stderr, "other\n");
break;
case ipmi_flash::ActionStatus::running:
std::fprintf(stderr, "running\n");
break;
case ipmi_flash::ActionStatus::success:
std::fprintf(stderr, "success\n");
exitLoop = true;
break;
default:
std::fprintf(stderr, "wat\n");
}
if (exitLoop)
{
break;
}
std::this_thread::sleep_for(verificationSleep);
}
}
catch (const ipmiblob::BlobException& b)
{
throw ToolException("blob exception received: " +
std::string(b.what()));
}
/* TODO: If this is reached and it's not success, it may be worth just
* throwing a ToolException with a timeout message specifying the final
* read's value.
*
* TODO: Given that excepting from certain points leaves the BMC update
* state machine in an inconsistent state, we need to carefully evaluate
* which exceptions from the lower layers allow one to try and delete the
* blobs to rollback the state and progress.
*/
return (result == ipmi_flash::ActionStatus::success);
}
} // namespace host_tool
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