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This commit is contained in:
33333-33333 2026-08-01 22:31:04 +09:00
commit 9d70afb4cc
42 changed files with 1266 additions and 630 deletions
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server/json-repository.js
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@ -2,6 +2,7 @@
function createJsonRepository({fsp,crypto,processId=process.pid}={}){
if(!fsp?.readFile||!fsp?.writeFile||!fsp?.rename||!crypto?.randomBytes)throw new TypeError('Filesystem and crypto adapters are required');
const retryableRenameCodes=new Set(['EACCES','EBUSY','EPERM']),renameRetryDelays=[20,50,100,200,400,800],sleep=milliseconds=>new Promise(resolve=>setTimeout(resolve,milliseconds));
const read=async(file,{missing=null}={})=>{
try{return JSON.parse(await fsp.readFile(file,'utf8'))}
catch(error){if(error.code==='ENOENT'&&missing!==undefined)return typeof missing==='function'?missing():missing;throw error}
@ -9,7 +10,7 @@ function createJsonRepository({fsp,crypto,processId=process.pid}={}){
const write=async(file,value)=>{
const temporary=`${file}.${processId}.${crypto.randomBytes(6).toString('hex')}.tmp`;
await fsp.writeFile(temporary,JSON.stringify(value),{encoding:'utf8',mode:0o600});
await fsp.rename(temporary,file);
for(let attempt=0;;attempt++)try{await fsp.rename(temporary,file);break}catch(error){if(!retryableRenameCodes.has(error?.code)||attempt>=renameRetryDelays.length){await fsp.unlink?.(temporary).catch(()=>{});throw error}await sleep(renameRetryDelays[attempt])}
};
const remove=async file=>fsp.unlink(file).catch(error=>{if(error.code!=='ENOENT')throw error});
return Object.freeze({read,write,remove});