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test for db existence before opening

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This commit is contained in:
Jude Nelson
2018-10-25 17:06:31 -04:00
parent eadae9db93
commit 59572bdb71
1 changed files with 14 additions and 8 deletions
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22
blockstack/blockstackd.py
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@@ -3174,21 +3174,27 @@ def run_blockstackd():
if args.action == 'db_version':
db_path = virtualchain.get_db_filename(virtualchain_hooks, working_dir)
ver = chainstate.namedb_read_version(db_path)
print "{}".format(ver)
if os.path.exists(db_path):
ver = chainstate.namedb_read_version(db_path)
print "{}".format(ver)
if semver_equal(ver, VERSION):
sys.exit(0)
else:
sys.exit(1)
if semver_equal(ver, VERSION):
sys.exit(0)
else:
print "No chainstate db found at {}".format(db_path)
sys.exit(1)
elif args.action == 'start':
# db state must be compatible
db_path = virtualchain.get_db_filename(virtualchain_hooks, working_dir)
ver = chainstate.namedb_read_version(db_path)
if not semver_equal(ver, VERSION):
print >> sys.stderr, 'FATAL: this node is version {}, but the chainstate db is version {}. Please upgrade your chainstate db by either using the `fast_sync` command or re-indexing the blockchain.'.format(VERSION, ver)
sys.exit(1)
if os.path.exists(db_path):
ver = chainstate.namedb_read_version(db_path)
if not semver_equal(ver, VERSION):
print >> sys.stderr, 'FATAL: this node is version {}, but the chainstate db is version {}. Please upgrade your chainstate db by either using the `fast_sync` command or re-indexing the blockchain.'.format(VERSION, ver)
sys.exit(1)
expected_snapshots = {}