Add a recorder for function calls (openai#1389)

**What:** Adds a recorder for function calls made by models.
**Why:** Currently function calls can be logged using `record_event` but
it'd be convenient for function calls to logged consistently.

evals/record.py

@@ -215,6 +215,15 @@ def record_sampling(self, prompt, sampled, sample_id=None, **extra):
  }
  self.record_event("sampling", data, sample_id=sample_id)
 
+ def record_function_call(self, name, arguments, return_value, sample_id=None, **extra):
+ data = {
+ "name": name,
+ "arguments": arguments,
+ "return_value": return_value,
+ **extra,
+ }
+ self.record_event("function_call", data, sample_id=sample_id)
+
  def record_cond_logp(self, prompt, completion, logp, sample_id=None, **extra):
  data = {
  "prompt": prompt,
@@ -591,6 +600,10 @@ def record_sampling(prompt, sampled, **extra):
  return default_recorder().record_sampling(prompt, sampled, **extra)
 
 
+def record_function_call(name, arguments, return_value, **extra):
+ return default_recorder().record_function_call(name, arguments, return_value, **extra)
+
+
 def record_cond_logp(prompt, completion, logp, **extra):
  return default_recorder().record_cond_logp(prompt, completion, logp, **extra)