feat(siteruntime): event-driven Attributes.WriteBatchAndWaitAsync (batched DCL write + trigger + existing WaitForAttribute waiter) + compile mirror

src/ZB.MOM.WW.ScadaBridge.SiteRuntime/Scripts/ScopeAccessors.cs

@@ -74,6 +74,40 @@ public class AttributeAccessor
     public Task SetAsync(string key, object? value)
         => _ctx.SetAttribute(Resolve(key), AttributeValueCodec.Encode(value) ?? string.Empty);
 
+    /// <summary>
+    /// Writes a SET of data-sourced attributes to the device in ONE gateway batch
+    /// round-trip, then writes <paramref name="flagKey"/>=<paramref name="flagValue"/>,
+    /// then waits EVENT-DRIVEN (reusing the existing <c>WaitForAttribute</c> waiter — not a
+    /// poll) for <paramref name="responseKey"/> to reach <paramref name="responseValue"/>,
+    /// bounded by <paramref name="timeout"/>. Replaces N sequential per-attribute writes
+    /// with one batched call before the wait. All keys are scope-resolved (<see cref="Resolve"/>)
+    /// and all values codec-encoded just like the other accessors. Returns <c>true</c> if
+    /// the response was observed within the timeout, <c>false</c> on timeout (no throw on
+    /// timeout); throws <see cref="System.InvalidOperationException"/> if the batch/trigger
+    /// write itself fails.
+    /// </summary>
+    /// <param name="values">Attribute key → value to batch-write (keys scope-resolved, values codec-encoded).</param>
+    /// <param name="flagKey">Trigger attribute key written AFTER the batch.</param>
+    /// <param name="flagValue">Value to write to the trigger.</param>
+    /// <param name="responseKey">Attribute key to wait on.</param>
+    /// <param name="responseValue">Target value to wait for (<c>null</c> ⇒ any change).</param>
+    /// <param name="timeout">How long to wait before returning false.</param>
+    /// <returns><c>true</c> on response match within the timeout; <c>false</c> on timeout.</returns>
+    public Task<bool> WriteBatchAndWaitAsync(
+        IReadOnlyDictionary<string, object?> values, string flagKey, object? flagValue,
+        string responseKey, object? responseValue, TimeSpan timeout)
+    {
+        var encoded = new Dictionary<string, string?>(values.Count);
+        foreach (var kv in values)
+            encoded[Resolve(kv.Key)] = AttributeValueCodec.Encode(kv.Value);
+
+        return _ctx.WriteBatchAndWait(
+            encoded,
+            Resolve(flagKey), AttributeValueCodec.Encode(flagValue),
+            Resolve(responseKey), AttributeValueCodec.Encode(responseValue),
+            timeout);
+    }
+
     /// <summary>
     /// WaitForAttribute (spec §3-§5): waits event-driven until the attribute equals
     /// <paramref name="targetValue"/> (value-equality, codec-normalized), bounded by

src/ZB.MOM.WW.ScadaBridge.SiteRuntime/Scripts/ScriptRuntimeContext.cs

@@ -525,6 +525,44 @@ public class ScriptRuntimeContext
         }
     }
 
+    /// <summary>
+    /// Writes a SET of data-sourced attributes to the device in ONE DCL batch round-trip,
+    /// then writes a trigger flag, then waits EVENT-DRIVEN (reusing the existing
+    /// <see cref="WaitAttribute"/> waiter — not a poll) for <paramref name="responseAttr"/>
+    /// to reach <paramref name="responseEncoded"/>, bounded by <paramref name="timeout"/>.
+    /// Replaces N sequential per-attribute writes with a single gateway call before the
+    /// wait. Throws <see cref="InvalidOperationException"/> if the write/trigger leg fails
+    /// (resolution error, multi-connection batch, device error); returns the wait result
+    /// otherwise (true = matched, false = timeout, never throws on timeout).
+    /// </summary>
+    /// <param name="encodedValues">Scope-resolved attribute name → codec-encoded value to batch-write.</param>
+    /// <param name="triggerAttr">Scope-resolved trigger attribute name written AFTER the batch.</param>
+    /// <param name="triggerEncoded">Codec-encoded value for the trigger.</param>
+    /// <param name="responseAttr">Scope-resolved attribute to wait on.</param>
+    /// <param name="responseEncoded">Codec-encoded target value (null ⇒ any change).</param>
+    /// <param name="timeout">How long to wait for the response before returning false.</param>
+    /// <returns><c>true</c> on response match within the timeout; <c>false</c> on timeout.</returns>
+    public async Task<bool> WriteBatchAndWait(
+        IReadOnlyDictionary<string, string?> encodedValues, string triggerAttr, string? triggerEncoded,
+        string responseAttr, string? responseEncoded, TimeSpan timeout)
+    {
+        var cid = Guid.NewGuid().ToString();
+        var batchReq = new WriteAttributeBatchRequest(
+            cid, _instanceName, encodedValues, triggerAttr, triggerEncoded, DateTimeOffset.UtcNow);
+
+        // 35s: the InstanceActor's DCL Ask is internally bounded at 30s, so allow a small
+        // margin so the DCL's own typed failure/timeout reply is the one we observe rather
+        // than an AskTimeoutException here. Honors the script execution-timeout token.
+        var batchResp = await _instanceActor.Ask<WriteAttributeBatchResponse>(
+            batchReq, TimeSpan.FromSeconds(35), _scriptTimeoutToken);
+
+        if (!batchResp.Success)
+            throw new InvalidOperationException(
+                $"WriteBatchAndWait write failed: {batchResp.ErrorMessage}");
+
+        return await WaitAttribute(responseAttr, responseEncoded, null, timeout);
+    }
+
     /// <summary>
     /// Calls a sibling script on the same instance by name (Ask pattern).
     /// WP-20: Enforces recursion limit.