blob: 4b55efb1463e6484632f1046c554dd0bbfd25734 [file] [log] [blame]
// Copyright 2019 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
#include "src/developer/feedback_agent/attachments.h"
#include <fuchsia/mem/cpp/fidl.h>
#include <inttypes.h>
#include <lib/fit/promise.h>
#include <lib/fsl/vmo/file.h>
#include <lib/fsl/vmo/sized_vmo.h>
#include <lib/fsl/vmo/strings.h>
#include <lib/syslog/cpp/logger.h>
#include <lib/zx/debuglog.h>
#include <zircon/errors.h>
#include <zircon/status.h>
#include <zircon/syscalls/log.h>
#include <string>
#include <vector>
#include "src/developer/feedback_agent/inspect_ptr.h"
#include "src/developer/feedback_agent/log_listener_ptr.h"
#include "src/lib/fxl/strings/string_printf.h"
namespace fuchsia {
namespace feedback {
namespace {
// This is actually synchronous, but we return a fit::promise to match other attachment providers
// that are asynchronous.
fit::promise<fuchsia::mem::Buffer> GetKernelLog() {
zx::debuglog log;
const zx_status_t create_status =
zx::debuglog::create(zx::resource(), ZX_LOG_FLAG_READABLE, &log);
if (create_status != ZX_OK) {
FX_PLOGS(ERROR, create_status) << "zx::debuglog::create failed";
return fit::make_result_promise<fuchsia::mem::Buffer>(fit::error());
}
// zx_log_record_t has a flexible array member, so we need to allocate the buffer explicitly.
char buf[ZX_LOG_RECORD_MAX + 1];
zx_log_record_t* record = reinterpret_cast<zx_log_record_t*>(buf);
std::string kernel_log;
while (log.read(/*options=*/0, /*buffer=*/record,
/*buffer_size=*/ZX_LOG_RECORD_MAX) > 0) {
if (record->datalen && (record->data[record->datalen - 1] == '\n')) {
record->datalen--;
}
record->data[record->datalen] = 0;
kernel_log += fxl::StringPrintf("[%05d.%03d] %05" PRIu64 ".%05" PRIu64 "> %s\n",
static_cast<int>(record->timestamp / 1000000000ULL),
static_cast<int>((record->timestamp / 1000000ULL) % 1000ULL),
record->pid, record->tid, record->data);
}
fsl::SizedVmo vmo;
if (!fsl::VmoFromString(kernel_log, &vmo)) {
FX_LOGS(ERROR) << "Failed to convert kernel log string to vmo";
return fit::make_result_promise<fuchsia::mem::Buffer>(fit::error());
}
return fit::make_ok_promise(std::move(vmo).ToTransport());
}
// This is actually synchronous, but we return a fit::promise to match other attachment providers
// that are asynchronous.
fit::promise<fuchsia::mem::Buffer> VmoFromFilename(const std::string& filename) {
fsl::SizedVmo vmo;
if (!fsl::VmoFromFilename(filename, &vmo)) {
FX_LOGS(ERROR) << "Failed to read VMO from file " << filename;
return fit::make_result_promise<fuchsia::mem::Buffer>(fit::error());
}
return fit::make_ok_promise(std::move(vmo).ToTransport());
}
fit::promise<fuchsia::mem::Buffer> BuildValue(const std::string& key,
async_dispatcher_t* dispatcher,
std::shared_ptr<::sys::ServiceDirectory> services,
const zx::duration timeout) {
if (key == "build.snapshot.xml") {
return VmoFromFilename("/config/build-info/snapshot");
} else if (key == "log.kernel.txt") {
return GetKernelLog();
} else if (key == "log.system.txt") {
return CollectSystemLog(dispatcher, services, timeout);
} else if (key == "inspect.json") {
return CollectInspectData(dispatcher, timeout);
} else {
FX_LOGS(WARNING) << "Unknown attachment " << key;
return fit::make_result_promise<fuchsia::mem::Buffer>(fit::error());
}
}
fit::promise<Attachment> BuildAttachment(const std::string& key, async_dispatcher_t* dispatcher,
std::shared_ptr<::sys::ServiceDirectory> services,
const zx::duration timeout) {
return BuildValue(key, dispatcher, services, timeout)
.and_then([key](fuchsia::mem::Buffer& vmo) -> fit::result<Attachment> {
Attachment attachment;
attachment.key = key;
attachment.value = std::move(vmo);
return fit::ok(std::move(attachment));
})
.or_else([key]() {
FX_LOGS(WARNING) << "Failed to build attachment " << key;
return fit::error();
});
}
} // namespace
std::vector<fit::promise<Attachment>> GetAttachments(
async_dispatcher_t* dispatcher, std::shared_ptr<::sys::ServiceDirectory> services,
const std::set<std::string>& allowlist, const zx::duration timeout) {
if (allowlist.empty()) {
FX_LOGS(WARNING) << "Attachment allowlist is empty, nothing to retrieve";
return {};
}
std::vector<fit::promise<Attachment>> attachments;
for (const auto& key : allowlist) {
attachments.push_back(BuildAttachment(key, dispatcher, services, timeout));
}
return attachments;
}
} // namespace feedback
} // namespace fuchsia