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improve error handling with rpc response API

This commit is contained in:
ansuz 2020-03-26 14:45:24 -04:00
parent cb53bd1c15
commit a4c8039cc7
2 changed files with 31 additions and 15 deletions
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17
lib/hk-util.js
View File

@ -772,7 +772,9 @@ HK.initializeIndexWorkers = function (Env, config, _cb) {
const workers = [];
const response = Util.response();
const response = Util.response(function (errLabel, info) {
Env.Log.error('HK_DB_WORKER__' + errLabel, info);
});
const initWorker = function (worker, cb) {
//console.log("initializing index worker");
const txid = Util.uid();
@ -798,14 +800,7 @@ HK.initializeIndexWorkers = function (Env, config, _cb) {
return;
}
//console.log(res);
try {
response.handle(res.txid, [res.error, res.value]);
} catch (err) {
Env.Log.error("INDEX_WORKER", {
error: err,
response: res,
});
}
response.handle(res.txid, [res.error, res.value]);
});
worker.on('exit', function () {
var idx = workers.indexOf(worker);
@ -945,7 +940,9 @@ HK.initializeValidationWorkers = function (Env) {
workers.push(fork('lib/workers/check-signature.js'));
}
const response = Util.response();
const response = Util.response(function (errLabel, info) {
Env.Log.error('HK_VALIDATE_WORKER__' + errLabel, info);
});
var initWorker = function (worker) {
worker.on('message', function (res) {

29
www/common/common-util.js
View File

@ -81,10 +81,16 @@
});
};
Util.response = function () {
Util.response = function (errorHandler) {
var pending = {};
var timeouts = {};
if (typeof(errorHandler) !== 'function') {
errorHandler = function (label) {
throw new Error(label);
};
}
var clear = function (id) {
clearTimeout(timeouts[id]);
delete timeouts[id];
@ -92,8 +98,8 @@
};
var expect = function (id, fn, ms) {
if (typeof(id) !== 'string') { throw new Error("EXPECTED_STRING"); }
if (typeof(fn) !== 'function') { throw new Error("EXPECTED_CALLBACK"); }
if (typeof(id) !== 'string') { errorHandler('EXPECTED_STRING'); }
if (typeof(fn) !== 'function') { errorHandler('EXPECTED_CALLBACK'); }
pending[id] = fn;
if (typeof(ms) === 'number' && ms) {
timeouts[id] = setTimeout(function () {
@ -105,8 +111,21 @@
var handle = function (id, args) {
var fn = pending[id];
if (typeof(fn) !== 'function') { throw new Error("MISSING_CALLBACK"); }
pending[id].apply(null, Array.isArray(args)? args : [args]);
if (typeof(fn) !== 'function') {
errorHandler("MISSING_CALLBACK", {
id: id,
args: args,
});
}
try {
pending[id].apply(null, Array.isArray(args)? args : [args]);
} catch (err) {
errorHandler('HANDLER_ERROR', {
error: err,
id: id,
args: args,
});
}
clear(id);
};