Fix IllegalArgumentException when process.resourceLabels is a closure (#7068)

In the nf-seqera executor, computeRunResourceLabels read the raw
process.resourceLabels value from the session config. When the directive
is defined dynamically (as a closure), the value was passed to
Labels.toStringMap which rejected it as a non-Map, aborting execution.

Closure-based resourceLabels typically reference task-scoped bindings
(task.process, task.hash, ...) and cannot be meaningfully evaluated at
the run level. Skip them at run level with a debug log; per-task
resolution via TaskConfig.getResourceLabels continues to resolve the
closure with the task binding as before.

Signed-off-by: Paolo Di Tommaso <paolo@seqera.io>
Signed-off-by: Paolo Di Tommaso <paolo.ditommaso@gmail.com>

Author: pditommaso

plugins/nf-seqera/src/main/io/seqera/executor/SeqeraExecutor.groovy

@@ -214,7 +214,13 @@ class SeqeraExecutor extends Executor implements ExtensionPoint {
     @PackageScope
     void computeRunResourceLabels() {
         final processMap = session.config.process as Map
-        this.runResourceLabels = Labels.toStringMap(processMap?.get('resourceLabels'))
+        final value = processMap?.get('resourceLabels')
+        if( value instanceof Closure ) {
+            log.debug "Skipping run-level process.resourceLabels: dynamic (closure) values are only resolved per-task"
+            this.runResourceLabels = Collections.<String,String>emptyMap()
+            return
+        }
+        this.runResourceLabels = Labels.toStringMap(value)
     }
 
     SeqeraBatchSubmitter getBatchSubmitter() {

plugins/nf-seqera/src/test/io/seqera/executor/SeqeraExecutorTest.groovy

@@ -175,6 +175,23 @@ class SeqeraExecutorTest extends Specification {
         executor.runResourceLabels == [:]
     }
 
+    def 'should skip run resource labels when process.resourceLabels is a closure'() {
+        given:
+        SysEnv.push([:])
+        def executor = new SeqeraExecutor()
+        def dynamic = { [team: 'a', priority: 7] }
+        executor.session = Mock(Session) {
+            getConfig() >> [process: [resourceLabels: dynamic]]
+        }
+
+        when:
+        executor.computeRunResourceLabels()
+
+        then:
+        noExceptionThrown()
+        executor.runResourceLabels == [:]
+    }
+
     def 'createRun populates CreateRunRequest.labels with config-level resourceLabels merged with auto-labels'() {
         given:
         SysEnv.push([:])