DI permit taking length of hashes in EL

lib/datadog/core/remote/worker.rb

@@ -23,7 +23,7 @@ def initialize(interval:, logger:, &block)
         attr_reader :logger
 
         def start
-          logger.debug { 'remote worker starting' }
+          logger.debug { "remote worker starting (pid: #{$$})" }
 
           acquire_lock
 
@@ -50,7 +50,7 @@ def start
         end
 
         def stop
-          logger.debug { 'remote worker stopping' }
+          logger.debug { "remote worker stopping (pid: #{$$})" }
 
           acquire_lock
 

lib/datadog/di/el/evaluator.rb

@@ -17,7 +17,7 @@ def iref(var)
 
         def len(var, var_name)
           case var
-          when Array, String
+          when Array, String, Hash
             var.length
           else
             raise DI::Error::ExpressionEvaluationError, "Unsupported type for length: #{var.class}: #{var_name}"

spec/datadog/di/el/integration_cases/all_any.yml

@@ -72,3 +72,32 @@
     - locals:
         collection: []
       result: false
+
+- name: "any with @value"
+  ast:
+    any:
+      - ref: collection
+      - isEmpty:
+          ref: '@value'
+
+  # compiled:
+
+  eval:
+    - locals:
+        collection:
+          foo: ""
+      result: true
+
+    - locals:
+        collection:
+          foo: 42
+      result: false
+
+    - locals:
+        collection: [1]
+      # TODO reconsider - there are no keys in an array
+      result: false
+
+    - locals:
+        collection: []
+      result: false

spec/datadog/di/el/integration_cases/length.yml

@@ -23,10 +23,23 @@
   compiled: len(ref('var'), 'var')
 
   eval:
-    - locals:
+    - name: string
+      locals:
         var: 'test'
       result: 4
 
+    - name: array
+      locals:
+        var: [1, 2, 3]
+      result: 3
+
+    - name: hash
+      locals:
+        var:
+          foo: bar
+          foo1: bar1
+      result: 2
+
 - name: length of complex expression
   ast:
     len: