@prisma/dev/dist/db.cjs

A local Prisma Postgres server for development and testing

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      CREATE TABLE IF NOT EXISTS "${E}"."${Z}" (
        id BIGSERIAL PRIMARY KEY,
        txid BIGINT NOT NULL DEFAULT txid_current(),
        schema_name TEXT NOT NULL,
        table_name TEXT NOT NULL,
        op TEXT NOT NULL,
        row_data JSONB,
        old_row_data JSONB,
        created_at TIMESTAMPTZ NOT NULL DEFAULT clock_timestamp()
      )
    `),await t.exec(`
      CREATE OR REPLACE FUNCTION "${E}"."${ve}"()
      RETURNS trigger
      LANGUAGE plpgsql
      AS $$
      BEGIN
        IF TG_TABLE_SCHEMA = '${E}' THEN
          RETURN COALESCE(NEW, OLD);
        END IF;

        INSERT INTO "${E}"."${Z}" (
          txid,
          schema_name,
          table_name,
          op,
          row_data,
          old_row_data
        )
        VALUES (
          txid_current(),
          TG_TABLE_SCHEMA,
          TG_TABLE_NAME,
          lower(TG_OP),
          CASE WHEN TG_OP IN ('INSERT', 'UPDATE') THEN to_jsonb(NEW) ELSE NULL END,
          CASE WHEN TG_OP IN ('UPDATE', 'DELETE') THEN to_jsonb(OLD) ELSE NULL END
        );

        RETURN COALESCE(NEW, OLD);
      END;
      $$;
    `),await t.exec(`
      CREATE OR REPLACE FUNCTION "${E}"."${Ne}"()
      RETURNS void
      LANGUAGE plpgsql
      AS $$
      DECLARE
        target REGCLASS;
      BEGIN
        FOR target IN
          SELECT c.oid::regclass
          FROM pg_class AS c
          JOIN pg_namespace AS n ON n.oid = c.relnamespace
          WHERE c.relkind IN ('r', 'p')
            AND n.nspname NOT IN ('${E}', 'information_schema', 'pg_catalog')
            AND n.nspname NOT LIKE 'pg_temp_%'
            AND n.nspname NOT LIKE 'pg_toast%'
        LOOP
          IF EXISTS (
            SELECT 1
            FROM pg_trigger
            WHERE tgrelid = target
              AND tgname = '${De}'
          ) THEN
            CONTINUE;
          END IF;

          EXECUTE format(
            'CREATE TRIGGER %I AFTER INSERT OR UPDATE OR DELETE ON %s FOR EACH ROW EXECUTE FUNCTION "${E}"."${ve}"()',
            '${De}',
            target::text
          );
        END LOOP;
      END;
      $$;
    `),await Le(e,t)}),await e.ensureInfrastructurePromise}async function Le(e,t){await re(e,t,async()=>{await t.query(`SELECT "${E}"."${Ne}"()`)})}async function qt(e,t){await xe(e,t),await Le(e,t);let r=await re(e,t,async()=>await t.query(`
      WITH drained AS (
        DELETE FROM "${E}"."${Z}"
        RETURNING txid, schema_name, table_name, op, row_data, old_row_data, id
      )
      SELECT txid, schema_name, table_name, op, row_data, old_row_data
      FROM drained
      ORDER BY id
    `));if(r.rows.length===0||e.subscribers.size===0)return;let n=r.rows.map(Wt);for(let s of e.subscribers)queueMicrotask(()=>{if(!e.closed&&e.subscribers.has(s))try{s(n)}catch(o){console.error("[WAL bridge] subscriber failed",o)}})}async function V(e,t){if(!e.closed){if(e.pollPromise){e.pendingPoll=!0,await e.pollPromise;return}e.pollPromise=(async()=>{do e.pendingPoll=!1,await qt(e,t);while(e.pendingPoll&&!e.closed)})().finally(()=>{e.pollPromise=null}),await e.pollPromise}}async function re(e,t,r){e.suppressDepth+=1;try{return await r()}finally{e.suppressDepth-=1,e.suppressDepth===0&&!e.closed&&I.get(t)!==e&&(e.closed=!0)}}function Wt(e){return{oldRecord:e.old_row_data,record:e.row_data,schema:e.schema_name,table:e.table_name,txid:String(e.txid),type:zt(e.op)}}function zt(e){switch(e.toLowerCase()){case"delete":return"delete";case"insert":return"insert";case"update":return"update";default:throw new Error(`Unsupported WAL bridge operation: ${e}`)}}var jt=10,Ue="127.0.0.1",Ce=128*1024*1024,$e=["-c","shared_buffers=16MB","-c","temp_buffers=1MB","-c","work_mem=1MB","-c","maintenance_work_mem=16MB","-c","wal_buffers=1MB"],m={connectionLimit:jt,connectTimeout:0,database:"template1",maxIdleConnectionLifetime:0,password:"postgres",poolTimeout:0,socketTimeout:0,sslMode:"disable",username:"postgres"},Ht=`postgres://${m.username}:${m.password}@localhost`,ne=new URLSearchParams({sslmode:m.sslMode}),ke=new URLSearchParams({...Object.fromEntries(ne.entries()),connection_limit:String(m.connectionLimit),connect_timeout:String(m.connectTimeout),max_idle_connection_lifetime:String(m.maxIdleConnectionLifetime),pool_timeout:String(m.poolTimeout),socket_timeout:String(m.socketTimeout)});async function Ge(e){let{rows:t}=await e.query("SELECT EXISTS(SELECT 1 FROM pg_roles WHERE rolname = 'postgres') AS exists");t[0]?.exists?await e.exec(`ALTER ROLE ${m.username} WITH LOGIN SUPERUSER PASSWORD '${m.password}'`):await e.exec(`CREATE ROLE ${m.username} WITH LOGIN SUPERUSER PASSWORD '${m.password}'`),await e.exec(`SET ROLE ${m.username}`)}async function Kt(e,t){if(e==="shadow_database"&&!t.dryRun)return await Qe(t);let r=e==="database"?t.databasePort:t.shadowDatabasePort;return t.dryRun?qe(e,t,{db:null,port:r,server:null}):await Fe(e,t,{port:r,updateServerStatePort:!0})}async function Qe(e,t=async()=>await Fe("shadow_database",e,{port:0,updateServerStatePort:!1})){let{debug:r}=e,n=null,s=null,o=!1,l=new Set,c=(0,F.createServer)(u),i=await Jt(c,e.shadowDatabasePort);return e.shadowDatabasePort=i,r&&console.debug(`[shadow_database] lazy proxy listening on port ${i}`),{...m,attachWalEventBridge:()=>Promise.reject(new Error("WAL bridge is only available for the primary database server")),attachQueryInsightsBridge:()=>Promise.reject(new Error("Query insights are only available for the primary database server")),close:async()=>{o=!0;for(let d of l)d.destroy();l.clear();let a=[];try{await Yt(c),r&&console.debug(`[shadow_database] lazy proxy stopped on port ${i}`)}catch(d){console.error("[shadow_database] lazy proxy stop error",d),a.push(d)}try{await s?.catch(()=>null),await n?.close()}catch(d){console.error("[shadow_database] backend close error",d),a.push(d)}if(a.length>0)throw new AggregateError(a,"Failed to close shadow_database properly")},connectionString:Q(i,ne),dump:async()=>{},getPrimaryKeyColumns:()=>Promise.reject(new Error("Primary key resolution is only available for the primary database server")),port:i,prismaORMConnectionString:Q(i,ke),terminalCommand:`PGPASSWORD=${m.password} PGSSLMODE=${m.sslMode} psql -h localhost -p ${i} -U ${m.username} -d ${m.database}`};function u(a){l.add(a);let d=()=>{l.delete(a)};a.once("close",d),a.once("error",d),a.pause(),p(a)}async function p(a){try{let d=await y();if(o){a.destroy();return}let f=(0,F.createConnection)({host:Ue,port:d.port});l.add(f);let D=()=>{l.delete(f)};f.once("close",D),f.once("error",D),a.once("close",()=>f.destroy()),a.once("error",()=>f.destroy()),f.once("error",()=>a.destroy()),f.once("connect",()=>{r&&console.debug(`[shadow_database] proxying connection to lazy backend on port ${d.port}`),a.resume(),a.pipe(f),f.pipe(a)})}catch(d){r&&console.error("[shadow_database] failed to start lazy backend",d),a.destroy(d instanceof Error?d:void 0)}}async function y(){if(n)return n;if(o)throw new Error("shadow_database is closed");return s||(r&&console.debug("[shadow_database] starting lazy backend..."),s=t().then(a=>(n=a,r&&console.debug(`[shadow_database] lazy backend started on port ${a.port}`),a)).catch(a=>{throw s=null,a})),await s}}async function Fe(e,t,r){let{debug:n}=t,{port:s,updateServerStatePort:o}=r,c=await(e==="shadow_database"?Xt:We)(t.pgliteDataDirPath,n);n&&c.onNotification((a,d)=>{console.debug(`[${e}][${a}] ${d}`)});let{PGLiteSocketServer:i}=await import("@electric-sql/pglite-socket"),u=e==="shadow_database"?t.shadowDatabaseIdleTimeoutMillis:t.databaseIdleTimeoutMillis,p=new i({db:c,debug:n,idleTimeout:Number.isFinite(u)?u:0,inspect:n,maxConnections:m.connectionLimit,port:s});n&&(p.addEventListener("listening",a=>{let{detail:d}=a;console.debug(`[${e}] server listening on ${JSON.stringify(d)}`)}),p.addEventListener("connection",a=>{let{clientAddress:d,clientPort:f}=a.detail;console.debug(`[${e}] client connected from ${d}:${f}`)}),p.addEventListener("error",a=>{let{detail:d}=a;console.error(`[${e}] server error:`,d)}));try{await p.start()}catch(a){throw a instanceof Error&&"code"in a&&a.code==="EADDRINUSE"?new N(s):a}let y=Number(p.getServerConn().split(":").at(1));return o&&(t[e==="database"?"databasePort":"shadowDatabasePort"]=y),qe(e,t,{db:c,port:y,server:p})}function qe(e,t,r){let{debug:n}=t,{db:s,port:o,server:l}=r||{},c=new Map;return n&&console.debug(`[${e}] server started on port ${o}`),{...m,attachWalEventBridge:async()=>{if(e!=="database"||!s)throw new Error("WAL bridge is only available for the primary database server");return await k(s)},attachQueryInsightsBridge:()=>{if(e!=="database"||!l)throw new Error("Query insights are only available for the primary database server");return Promise.resolve(Ee(l))},close:async()=>{let i=[];try{await l?.stop(),n&&console.debug(`[${e}] server stopped on port ${o}`)}catch(u){console.error(`[${e}] server stop error`,u),i.push(u)}if(e==="database"){try{l&&await Se(l),n&&console.debug(`[${e}] closed query insights bridge`)}catch(u){console.error(`[${e}] query insights bridge close error`,u),i.push(u)}try{s&&await Ie(s),n&&console.debug(`[${e}] closed WAL bridge`)}catch(u){console.error(`[${e}] WAL bridge close error`,u),i.push(u)}try{await s?.syncToFs(),n&&console.debug(`[${e}] synced to filesystem`)}catch(u){console.error(`[${e}] sync error`,u),i.push(u)}}try{await s?.close(),n&&console.debug(`[${e}] closed`)}catch(u){console.error(`[${e}] close error`,u),i.push(u)}if(i.length>0)throw new AggregateError(i,`Failed to close ${e} properly`)},connectionString:Q(o,ne),dump:async i=>{e==="shadow_database"||!s||await ze({db:s,debug:n,destinationPath:i})},getPrimaryKeyColumns:async(i,u)=>{if(e==="shadow_database"||!s)throw new Error("Primary key resolution is only available for the primary database server");let p=`${i}.${u}`,y=c.get(p);return y||(y=Vt(s,i,u).catch(a=>{throw c.delete(p),a}),c.set(p,y)),await y},port:o,prismaORMConnectionString:Q(o,ke),terminalCommand:`PGPASSWORD=${m.password} PGSSLMODE=${m.sslMode} psql -h localhost -p ${o} -U ${m.username} -d ${m.database}`}}function Q(e,t){return`${Ht}:${e}/${m.database}?${t.toString()}`}async function We(e,t){let{PGlite:r}=await import("@electric-sql/pglite"),n=await X(),s=e==="memory://"||!await ie((0,Oe.join)(e,"PG_VERSION")),o=await r.create({database:m.database,dataDir:e,debug:t?5:void 0,extensions:n.extensions,fsBundle:n.fsBundle,initialMemory:Ce,loadDataDir:s?n.loadDataDir:void 0,relaxedDurability:!1,startParams:[...r.defaultStartParams,...$e],wasmModule:n.wasmModule});return await Ge(o),o}async function Jt(e,t){return await new Promise((r,n)=>{let s=c=>{if(l(),c.code==="EADDRINUSE"){n(new N(t));return}n(c)},o=()=>{let c=e.address();if(l(),!c||typeof c=="string"){n(new Error("Failed to determine TCP server port"));return}r(c.port)},l=()=>{e.off("error",s),e.off("listening",o)};e.once("error",s),e.once("listening",o),e.listen(t,Ue)})}async function Yt(e){await new Promise((t,r)=>{e.close(n=>{let s=n;if(s&&s.code!=="ERR_SERVER_NOT_RUNNING"){r(s);return}t()})})}async function Xt(e,t){let{PGlite:r}=await import("@electric-sql/pglite"),n=await X(),s=await r.create({database:m.database,dataDir:"memory://",debug:t?5:void 0,extensions:n.extensions,fsBundle:n.fsBundle,initialMemory:Ce,loadDataDir:n.loadDataDir,relaxedDurability:!1,startParams:[...r.defaultStartParams,...$e],wasmModule:n.wasmModule});return await Ge(s),s}async function Vt(e,t,r){let{rows:n}=await e.query(`
    SELECT attribute.attname AS column_name
    FROM pg_constraint pk_constraint
    INNER JOIN pg_class relation
      ON relation.oid = pk_constraint.conrelid
    INNER JOIN pg_namespace namespace
      ON namespace.oid = relation.relnamespace
    INNER JOIN unnest(pk_constraint.conkey) WITH ORDINALITY AS keys(attnum, ordinality)
      ON TRUE
    INNER JOIN pg_attribute attribute
      ON attribute.attrelid = relation.oid
      AND attribute.attnum = keys.attnum
    WHERE pk_constraint.contype = 'p'
      AND namespace.nspname = ${Be(t)}
      AND relation.relname = ${Be(r)}
    ORDER BY keys.ordinality
  `);return n.map(s=>s.column_name)}function Be(e){return`'${e.replaceAll("'","''")}'`}async function ze(e){let{dataDir:t,db:r,debug:n,destinationPath:s}=e,o=r||await We(t,n),{pgDump:l}=await import("@electric-sql/pglite-tools/pg_dump"),c=await l({args:["--schema-only","--no-owner"],fileName:s?(0,Me.filename)(s):void 0,pg:await o.clone()});return s?(n&&console.debug(`[DB] Dumping database to ${s}`),await ue(c,s)):(n&&console.debug("[DB] Dumping database to memory"),await c.text())}0&&(module.exports={attachWalEventBridge,dumpDB,shouldPollWalAfterMessages,shouldPollWalAfterResponse,startDBServer,startLazyShadowDBServer});