Allow to specify the logger for PPO agents.

PiperOrigin-RevId: 420289254
Change-Id: Iec00166e2e86308ca06bfd916549bed7c3c6c2e7

acme/agents/jax/ppo/agent_test.py

@@ -25,6 +25,7 @@
 from acme.jax import utils
 from acme.testing import fakes
 from acme.utils import counting
+from acme.utils import loggers
 import flax
 import haiku as hk
 import jax
@@ -133,6 +134,7 @@ def run_ppo_agent(self, make_networks_fn):
     config = ppo.PPOConfig(unroll_length=4, num_epochs=2, num_minibatches=2)
     workdir = self.create_tempdir()
     counter = counting.Counter()
+    logger_fn = lambda: loggers.make_default_logger('learner')
     # Construct the agent.
     agent = ppo.PPO(
         spec=spec,
@@ -142,6 +144,7 @@ def run_ppo_agent(self, make_networks_fn):
         workdir=workdir.full_path,
         normalize_input=True,
         counter=counter,
+        logger_fn=logger_fn,
     )
 
     # Try running the environment loop. We have no assertions here because all

acme/agents/jax/ppo/agents.py

@@ -45,11 +45,12 @@ def __init__(
       seed: int,
       num_actors: int,
       normalize_input: bool = False,
+      logger_fn: Optional[Callable[[], loggers.Logger]] = None,
       save_reverb_logs: bool = False,
       log_every: float = 10.0,
       max_number_of_steps: Optional[int] = None,
   ):
-    logger_fn = functools.partial(
+    logger_fn = logger_fn or functools.partial(
         loggers.make_default_logger,
         'learner',
         save_reverb_logs,
@@ -104,8 +105,10 @@ def __init__(
       workdir: Optional[str] = '~/acme',
       normalize_input: bool = False,
       counter: Optional[counting.Counter] = None,
+      logger_fn: Optional[Callable[[], loggers.Logger]] = None,
   ):
-    ppo_builder = builder.PPOBuilder(config)
+    logger_fn = logger_fn or (lambda: None)
+    ppo_builder = builder.PPOBuilder(config, logger_fn=logger_fn)
     if normalize_input:
       # Two batch dimensions: [num_sequences, num_steps, ...]
       batch_dims = (0, 1)