Move the parse of last_install to recovery-persist
The recovery-persist used to look for the related recovery logs in
persist storage, and copy them under /data/misc/recovery during the
normal boot process.
As we also want to find out the sideload information from last_install,
it makes more sense to move the parse & report of non-a/b metrics to
recovery-persist. Thus we can avoid the race condition of the file
system between the native code and RecoverySystem.
Bug: 114278989
Test: unit test pass, check the event buffer for metrics report
Change-Id: I32d7b2b831bc74a61a70af9a2f0b8a7e9b3e36ee
diff --git a/recovery-persist.cpp b/recovery-persist.cpp
index d3ade62..ebb42d2 100644
--- a/recovery-persist.cpp
+++ b/recovery-persist.cpp
@@ -35,19 +35,22 @@
#include <string.h>
#include <unistd.h>
+#include <limits>
#include <string>
#include <android-base/file.h>
#include <android-base/logging.h>
+#include <metricslogger/metrics_logger.h>
#include <private/android_logger.h> /* private pmsg functions */
#include "logging.h"
+#include "otautil/parse_install_logs.h"
-static const char *LAST_LOG_FILE = "/data/misc/recovery/last_log";
-static const char *LAST_PMSG_FILE = "/sys/fs/pstore/pmsg-ramoops-0";
-static const char *LAST_KMSG_FILE = "/data/misc/recovery/last_kmsg";
-static const char *LAST_CONSOLE_FILE = "/sys/fs/pstore/console-ramoops-0";
-static const char *ALT_LAST_CONSOLE_FILE = "/sys/fs/pstore/console-ramoops";
+constexpr const char* LAST_LOG_FILE = "/data/misc/recovery/last_log";
+constexpr const char* LAST_PMSG_FILE = "/sys/fs/pstore/pmsg-ramoops-0";
+constexpr const char* LAST_KMSG_FILE = "/data/misc/recovery/last_kmsg";
+constexpr const char* LAST_CONSOLE_FILE = "/sys/fs/pstore/console-ramoops-0";
+constexpr const char* ALT_LAST_CONSOLE_FILE = "/sys/fs/pstore/console-ramoops";
// close a file, log an error if the error indicator is set
static void check_and_fclose(FILE *fp, const char *name) {
@@ -109,6 +112,20 @@
return android::base::WriteStringToFile(buffer, destination.c_str());
}
+// Parses the LAST_INSTALL file and reports the update metrics saved under recovery mode.
+static void report_metrics_from_last_install(const std::string& file_name) {
+ auto metrics = ParseLastInstall(file_name);
+ // TODO(xunchang) report the installation result.
+ for (const auto& [event, value] : metrics) {
+ if (value > std::numeric_limits<int>::max()) {
+ LOG(WARNING) << event << " (" << value << ") exceeds integer max.";
+ } else {
+ LOG(INFO) << "Uploading " << value << " to " << event;
+ android::metricslogger::LogHistogram(event, value);
+ }
+ }
+}
+
int main(int argc, char **argv) {
/* Is /cache a mount?, we have been delivered where we are not wanted */
@@ -138,14 +155,18 @@
}
if (has_cache) {
- /*
- * TBD: Future location to move content from
- * /cache/recovery to /data/misc/recovery/
- */
- /* if --force-persist flag, then transfer pmsg data anyways */
- if ((argc <= 1) || !argv[1] || strcmp(argv[1], "--force-persist")) {
- return 0;
- }
+ // Collects and reports the non-a/b update metrics from last_install; and removes the file
+ // to avoid duplicate report.
+ report_metrics_from_last_install(LAST_INSTALL_FILE_IN_CACHE);
+ if (unlink(LAST_INSTALL_FILE_IN_CACHE) == -1) {
+ PLOG(ERROR) << "Failed to unlink " << LAST_INSTALL_FILE_IN_CACHE;
+ }
+
+ // TBD: Future location to move content from /cache/recovery to /data/misc/recovery/
+ // if --force-persist flag, then transfer pmsg data anyways
+ if ((argc <= 1) || !argv[1] || strcmp(argv[1], "--force-persist")) {
+ return 0;
+ }
}
/* Is there something in pmsg? */
@@ -157,6 +178,15 @@
__android_log_pmsg_file_read(
LOG_ID_SYSTEM, ANDROID_LOG_INFO, "recovery/", logsave, NULL);
+ // For those device without /cache, the last_install file has been copied to
+ // /data/misc/recovery from pmsg. Looks for the sideload history only.
+ if (!has_cache) {
+ report_metrics_from_last_install(LAST_INSTALL_FILE);
+ if (unlink(LAST_INSTALL_FILE) == -1) {
+ PLOG(ERROR) << "Failed to unlink " << LAST_INSTALL_FILE;
+ }
+ }
+
/* Is there a last console log too? */
if (rotated) {
if (!access(LAST_CONSOLE_FILE, R_OK)) {