Remove a couple of weird quirks of the Worker1 and Promiser APIs. The Worker1 (now undocumented) unlink capability needs to be reevaluated to work equivalently for all storage backends.

FossilOrigin-Name: 9f2b331a32cbaadfd20d04c9908171355322c1aa1d9d6df3628f3b2fb4391ec1

ext/wasm/api/sqlite3-api-worker1.js

@@ -225,13 +225,7 @@
     type: "close",
     messageId: ...as above...
     dbId: ...as above...
-    args: OPTIONAL: {
-
-      unlink: if truthy, the associated db will be unlinked (removed)
-      from the virtual filesystems. Failure to unlink is silently
-      ignored. Does not currently work for all storage backends.
-
-    }
+    args: none
   }
   ```
 
@@ -460,6 +454,8 @@ sqlite3.initWorker1API = function(){
         filename: db && db.filename
       };
       if(db){
+        // Keep the "unlink" flag undocumented until we figure out how
+        // to apply it consistently, independent of the db storage.
         wState.close(db, ((ev.args && 'object'===typeof ev.args)
                           ? !!ev.args.unlink : false));
       }

ext/wasm/sqlite3-worker1-promiser.js

@@ -45,11 +45,6 @@
    the simplest way to tell the worker to kick off work at the
    earliest opportunity.
 
-   - `onerror` (optional): a callback to pass error-type events from
-   the worker. The object passed to it will be the error message
-   payload from the worker. This is _not_ the same as the
-   worker.onerror property!
-
    - `onunhandled` (optional): a callback which gets passed the
    message event object for any worker.onmessage() events which
    are not handled by this proxy. Ideally that "should" never
@@ -62,21 +57,6 @@
    so that dispatching can work. If not defined, a default generator
    is used (which should be sufficient for most or all cases).
 
-   - `dbId` (optional): is the database ID to be used by the
-   worker. This must initially be unset or a falsy value. The
-   first `open` message sent to the worker will cause this config
-   entry to be assigned to the ID of the opened database. That ID
-   "should" be set as the `dbId` property of the messages sent in
-   future requests, so that the worker uses that database.
-   However, if the worker is not given an explicit dbId, it will
-   use the first-opened database by default. If client code needs
-   to work with multiple database IDs, the client-level code will
-   need to juggle those themselves. A `close` message will clear
-   this property if it matches the ID of the closed db. Potential
-   TODO: add a config callback specifically for reporting `open`
-   and `close` message results, so that clients may track those
-   values.
-
    - `debug` (optional): a console.debug()-style function for logging
    information about messages.
 
@@ -110,14 +90,9 @@
    const sq3Promiser = sqlite3Worker1Promiser(config);
    sq3Promiser('open', {filename:"/foo.db"}).then(function(msg){
      console.log("open response",msg); // => {type:'open', result: {filename:'/foo.db'}, ...}
-     // Recall that config.dbId will be set for the first 'open'
-     // call and cleared for a matching 'close' call.
    });
    sq3Promiser({type:'close'}).then((msg)=>{
      console.log("close response",msg); // => {type:'close', result: {filename:'/foo.db'}, ...}
-     // Recall that config.dbId will be used by default for the message's dbId if
-     // none is explicitly provided, and a 'close' op will clear config.dbId if it
-     // closes that exact db.
    });
    ```
 
@@ -151,13 +126,14 @@ self.sqlite3Worker1Promiser = function callee(config = callee.defaultConfig){
     const f = config;
     config = Object.assign(Object.create(null), callee.defaultConfig);
     config.onready = f;
+  }else{
+    config = Object.assign(Object.create(null), callee.defaultConfig, config);
   }
-  /* Maintenance reminder: when passed a config object, the reference
-     must be used as-is, instead of normalizing it to another object,
-     so that we can communicate the dbId through it. */
   const handlerMap = Object.create(null);
   const noop = function(){};
-  const err = config.onerror || noop;
+  const err = config.onerror
+        || noop /* config.onerror is intentionally undocumented
+                   pending finding a less ambiguous name */;
   const debug = config.debug || noop;
   const idTypeMap = config.generateMessageId ? undefined : Object.create(null);
   const genMsgId = config.generateMessageId || function(msg){
@@ -166,6 +142,7 @@ self.sqlite3Worker1Promiser = function callee(config = callee.defaultConfig){
   const toss = (...args)=>{throw new Error(args.join(' '))};
   if(!config.worker) config.worker = callee.defaultConfig.worker;
   if('function'===typeof config.worker) config.worker = config.worker();
+  let dbId;
   config.worker.onmessage = function(ev){
     ev = ev.data;
     debug('worker1.onmessage',ev);
@@ -191,10 +168,10 @@ self.sqlite3Worker1Promiser = function callee(config = callee.defaultConfig){
           msgHandler.reject(ev);
           return;
         case 'open':
-          if(!config.dbId) config.dbId = ev.dbId;
+          if(!dbId) dbId = ev.dbId;
           break;
         case 'close':
-          if(config.dbId === ev.dbId) config.dbId = undefined;
+          if(ev.dbId===dbId) dbId = undefined;
           break;
         default:
           break;
@@ -214,7 +191,7 @@ self.sqlite3Worker1Promiser = function callee(config = callee.defaultConfig){
     }else{
       toss("Invalid arugments for sqlite3Worker1Promiser()-created factory.");
     }
-    if(!msg.dbId) msg.dbId = config.dbId;
+    if(!msg.dbId) msg.dbId = dbId;
     msg.messageId = genMsgId(msg);
     msg.departureTime = performance.now();
     const proxy = Object.create(null);
@@ -249,7 +226,7 @@ self.sqlite3Worker1Promiser = function callee(config = callee.defaultConfig){
       proxy.resolve = resolve;
       proxy.reject = reject;
       handlerMap[msg.messageId] = proxy;
-      debug("Posting",msg.type,"message to Worker dbId="+(config.dbId||'default')+':',msg);
+      debug("Posting",msg.type,"message to Worker dbId="+(dbId||'default')+':',msg);
       config.worker.postMessage(msg);
     });
     if(rowCallbackId) p = p.finally(()=>delete handlerMap[rowCallbackId]);
@@ -261,6 +238,5 @@ self.sqlite3Worker1Promiser.defaultConfig = {
     //const p = self.location.pathname.replace(/[^/]*$/, "sqlite3-worker1.js");
     return new Worker("sqlite3-worker1.js");
   },
-  onerror: (...args)=>console.error('worker1 error',...args),
-  dbId: undefined
+  onerror: (...args)=>console.error('worker1 promiser error',...args)
 };

ext/wasm/testing-worker1-promiser.js

@@ -91,8 +91,8 @@
       const r = ev.result;
       log("then open result",r);
       T.assert(ev.dbId === r.dbId)
-        .assert(ev.messageId)
-        .assert(promiserConfig.dbId === ev.dbId);
+        .assert(ev.messageId);
+      promiserConfig.dbId = ev.dbId;
     }).then(runTests2);
   };
 
@@ -248,8 +248,7 @@
     });
 
     /***** close() tests must come last. *****/
-    await wtest('close',{unlink:true},function(ev){
-      T.assert(!promiserConfig.dbId);
+    await wtest('close',{},function(ev){
       T.assert('string' === typeof ev.result.filename);
     });
 
@@ -258,6 +257,5 @@
     }).finally(()=>logHtml('',"That's all, folks!"));
   }/*runTests2()*/;
 
-  
   log("Init complete, but async init bits may still be running.");
 })();

manifest

@@ -1,5 +1,5 @@
-C Tweaks\sto\sthe\sWorker1\sand\sPromiser\sAPIs\sprompted\sby\sdocumenting\sthem.
-D 2022-09-30T23:02:11.824
+C Remove\sa\scouple\sof\sweird\squirks\sof\sthe\sWorker1\sand\sPromiser\sAPIs.\sThe\sWorker1\s(now\sundocumented)\sunlink\scapability\sneeds\sto\sbe\sreevaluated\sto\swork\sequivalently\sfor\sall\sstorage\sbackends.
+D 2022-09-30T23:49:43.818
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
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@@ -489,7 +489,7 @@ F ext/wasm/api/sqlite3-api-glue.js ead29e6008ba148e7c67ad2bd928819dc72313ad2dcd3
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-F ext/wasm/api/sqlite3-api-worker1.js 5fb9d178be5215107fc97eb67b9364d0ade3d4a90194b07a630afe6103c83408
+F ext/wasm/api/sqlite3-api-worker1.js 7f4f46cb6b512a48572d7567233896e6a9c46570c44bdc3d13419730c7c221c8
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@@ -523,12 +523,12 @@ F ext/wasm/split-speedtest1-script.sh a3e271938d4d14ee49105eb05567c6a69ba4c1f129
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-F ext/wasm/sqlite3-worker1-promiser.js 4769b7a0a3d5fa1594ca555e8a3050c17f000fdebdabbc77c31a339ec914c405
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-F ext/wasm/testing-worker1-promiser.js 4de504b3c79564f0b3975c5e652b4bc16e37d2cc2e29b3a06233a17df5ad8eed
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@@ -2029,8 +2029,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
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-Z 43e7dcdb92d55bec08378952a610d517
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 # Remove this line to create a well-formed Fossil manifest.

manifest.uuid

@@ -1 +1 @@
-c68b9aa160e2c1197ae7eb06a634017ac2b281393074afa4582762d5458c6889
+9f2b331a32cbaadfd20d04c9908171355322c1aa1d9d6df3628f3b2fb4391ec1