add get_trial_id

src/sdk/pynni/nni/platform/local.py

@@ -96,3 +96,7 @@ def send_metric(string):
 
 def get_sequence_id():
     return trial_env_vars.NNI_TRIAL_SEQ_ID
+
+def get_trial_id():
+    return trial_env_vars.NNI_TRIAL_JOB_ID
+    
\ No newline at end of file

src/sdk/pynni/nni/platform/standalone.py

@@ -28,6 +28,9 @@ def get_next_parameter():
 def get_sequence_id():
     pass
 
+def get_trial_id():
+    pass
+
 def send_metric(string):
     metric = json_tricks.loads(string)
     if metric['type'] == 'FINAL':

src/sdk/pynni/nni/platform/test.py

@@ -35,6 +35,9 @@ def get_next_parameter():
 def get_sequence_id():
     return 0
 
+def get_trial_id():
+    return 0
+
 def send_metric(string):
     global _last_metric
     _last_metric = string

src/sdk/pynni/nni/trial.py

@@ -30,12 +30,14 @@ __all__ = [
     'get_current_parameter',
     'report_intermediate_result',
     'report_final_result',
-    'get_sequence_id'
+    'get_sequence_id',
+    'get_trial_id'
 ]
 
 
 _params = None
 _sequence_id = platform.get_sequence_id()
+_trial_id = platform.get_trial_id()
 
 
 def get_next_parameter():
@@ -55,6 +57,9 @@ def get_current_parameter(tag):
 def get_sequence_id():
     return _sequence_id
 
+def get_trial_id():
+    return _trial_id
+
 _intermediate_seq = 0
 
 def report_intermediate_result(metric):