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NavCache: only remove if the file exists.

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Otherwise we block trying to re-create the cache, which is dumb. This
showed up as Sentry issue:
https://sentry.io/organizations/flightgear/issues/1875854826

Will back-port to 2020.2 once verified.
This commit is contained in:
James Turner 2020-09-04 12:29:45 +01:00
parent 1fd5502e9b
commit 4402d7b81d
1 changed files with 5 additions and 6 deletions
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11
src/Navaids/NavDataCache.cxx
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@ -1212,14 +1212,13 @@ NavDataCache::NavDataCache()
os << "navdata_" << versionParts[0] << "_" << versionParts[1] << ".cache";
}
homePath.append(os.str());
// permit additional DB connections from the same process
sqlite3_config(SQLITE_CONFIG_MULTITHREAD);
for (int t=0; t < MAX_TRIES; ++t) {
SGPath cachePath = homePath / os.str();
try {
d.reset(new NavDataCachePrivate(homePath, this));
d.reset(new NavDataCachePrivate(cachePath, this));
d->init();
//d->checkCacheFile();
// reached this point with no exception, success
@ -1239,14 +1238,14 @@ NavDataCache::NavDataCache()
d.reset();
// only wipe the existing if not readonly
if (!fgGetBool("/sim/fghome-readonly", false)) {
bool ok = homePath.remove();
if (cachePath.exists() && !fgGetBool("/sim/fghome-readonly", false)) {
bool ok = cachePath.remove();
if (!ok) {
SG_LOG(SG_NAVCACHE, SG_ALERT, "NavCache: failed to remove previous cache file");
flightgear::fatalMessageBoxThenExit(
"Unable to re-create navigation cache",
"Attempting to remove the old cache failed.",
"Location: " + homePath.utf8Str());
"Location: " + cachePath.utf8Str());
}
}
}