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bitcoind: wait until RPC port is open

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This fixes rare failures in clightning which requires an open bitcoind
RPC port
This commit is contained in:
Erik Arvstedt 2019-11-27 14:04:46 +01:00
parent 5536b64fb3
commit ad7a519284
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GPG Key ID: 33312B944DD97846
1 changed files with 10 additions and 4 deletions
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14
modules/bitcoind.nix
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@ -19,7 +19,7 @@ let
listen=${if cfg.listen then "1" else "0"} listen=${if cfg.listen then "1" else "0"}
# RPC server options # RPC server options
${optionalString (cfg.rpc.port != null) "rpcport=${toString cfg.rpc.port}"} rpcport=${toString cfg.rpc.port}
${concatMapStringsSep "\n" ${concatMapStringsSep "\n"
(rpcUser: "rpcauth=${rpcUser.name}:${rpcUser.passwordHMAC}") (rpcUser: "rpcauth=${rpcUser.name}:${rpcUser.passwordHMAC}")
(attrValues cfg.rpc.users) (attrValues cfg.rpc.users)
@ -108,9 +108,9 @@ in {
rpc = { rpc = {
port = mkOption { port = mkOption {
type = types.nullOr types.ints.u16; type = types.ints.u16;
default = null; default = 8332;
description = "Override the default port on which to listen for JSON-RPC connections."; description = "Port on which to listen for JSON-RPC connections.";
}; };
users = mkOption { users = mkOption {
default = {}; default = {};
@ -241,6 +241,12 @@ in {
echo "rpcpassword=$(cat /secrets/bitcoin-rpcpassword)" >> '${cfg.dataDir}/bitcoin.conf' echo "rpcpassword=$(cat /secrets/bitcoin-rpcpassword)" >> '${cfg.dataDir}/bitcoin.conf'
chmod -R g+rX '${cfg.dataDir}/blocks' chmod -R g+rX '${cfg.dataDir}/blocks'
''; '';
# Wait until RPC port is open. This usually takes just a few ms.
postStart = ''
while ! { exec 3>/dev/tcp/127.0.0.1/${toString cfg.rpc.port}; } &>/dev/null; do
sleep 0.05
done
'';
serviceConfig = { serviceConfig = {
Type = "simple"; Type = "simple";
User = "${cfg.user}"; User = "${cfg.user}";