grpc channel

csst_dfs_api_cluster/common/catalog.py

@@ -6,15 +6,16 @@ import io
 from csst_dfs_commons.models import Result
 
 from csst_dfs_proto.common.ephem import ephem_pb2, ephem_pb2_grpc
-from .service import ServiceProxy
-from .constants import *
+from .service import grpc_channel
 from .utils import get_auth_headers
 
 log = logging.getLogger('csst')
 class CatalogApi(object):
     def __init__(self):
-        self.stub = ephem_pb2_grpc.EphemSearchSrvStub(ServiceProxy().channel())
+        self.stub_class = ephem_pb2_grpc.EphemSearchSrvStub
+        self.stub = None
 
+    @grpc_channel
     def gaia3_query(self, ra: float, dec: float, radius: float, columns: tuple, min_mag: float,  max_mag: float,  obstime: int, limit: int):
         ''' retrieval GAIA DR 3
             args:

csst_dfs_api_cluster/common/service.py

 import os
 import grpc
 from csst_dfs_commons.models.errors import CSSTFatalException
+
 class ServiceProxy:
     def __init__(self):
         self.gateway = os.getenv("CSST_DFS_GATEWAY",'172.31.248.218:30880')
@@ -16,3 +17,23 @@ class ServiceProxy:
             raise CSSTFatalException('Error connecting to server {}'.format(self.gateway))
         else:
             return channel
+        
+def grpc_channel(func):
+    def wrapper(*args, **kwargs):
+        with get_grpc_channel() as c:
+            args[0].stub = args[0].stub_class(c)
+            return func(*args, **kwargs)
+    return wrapper
+
+def get_grpc_channel():    
+    options = (('grpc.max_send_message_length', 1024 * 1024 * 1024),
+                ('grpc.max_receive_message_length', 1024 * 1024 * 1024))     
+    gateway = os.getenv("CSST_DFS_GATEWAY",'172.31.248.218:30880')
+    # channel = grpc.insecure_channel(self.gateway, options = options, compression = grpc.Compression.Gzip)
+    channel = grpc.insecure_channel(gateway, options = options)
+    try:
+        grpc.channel_ready_future(channel).result(timeout=10)
+    except grpc.FutureTimeoutError:
+        raise CSSTFatalException('Error connecting to server {}'.format(gateway))
+    else:
+        return channel  
\ No newline at end of file

csst_dfs_api_cluster/common/utils.py

@@ -5,7 +5,7 @@ import grpc
 
 from csst_dfs_commons.models import Result
 from csst_dfs_proto.common.misc import misc_pb2, misc_pb2_grpc
-from .service import ServiceProxy
+from .service import get_grpc_channel
 
 def format_datetime(dt):
     return dt.strftime('%Y-%m-%d %H:%M:%S')
@@ -57,7 +57,8 @@ def get_auth_headers():
     return (("csst_dfs_app",os.getenv("CSST_DFS_APP_ID")),("csst_dfs_token",os.getenv("CSST_DFS_APP_TOKEN")),)
 
 def get_nextId_by_prefix(prefix):
-    stub = misc_pb2_grpc.MiscSrvStub(ServiceProxy().channel())
+    with get_grpc_channel() as c:
+        stub = misc_pb2_grpc.MiscSrvStub(c)
         try:
             resp,_ = stub.GetSeqId.with_call(
                 misc_pb2.GetSeqIdReq(prefix=prefix),

csst_dfs_api_cluster/facility/brick.py

@@ -6,7 +6,7 @@ from csst_dfs_commons.models.facility import Brick, BrickObsStatus, BrickLevel1
 
 from csst_dfs_proto.facility.brick import brick_pb2, brick_pb2_grpc
 
-from ..common.service import ServiceProxy
+from ..common.service import grpc_channel
 from ..common.utils import *
 from ..common.constants import UPLOAD_CHUNK_SIZE
 
@@ -15,8 +15,10 @@ class BrickApi(object):
     Brick Operation Class
     """    
     def __init__(self):
-        self.stub = brick_pb2_grpc.BrickSrvStub(ServiceProxy().channel())
+        self.stub_class = brick_pb2_grpc.BrickSrvStub
+        self.stub = None
 
+    @grpc_channel
     def find(self, **kwargs):
         ''' find brick records
 
@@ -39,6 +41,7 @@ class BrickApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def get(self, **kwargs):
         '''  fetch a record from database
 
@@ -61,6 +64,7 @@ class BrickApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))        
 
+    @grpc_channel
     def write(self, **kwargs):
         ''' insert a brickal record into database
 
@@ -88,6 +92,7 @@ class BrickApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def find_obs_status(self, **kwargs):
         ''' find observation status of bricks
 
@@ -113,12 +118,13 @@ class BrickApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
         
+    @grpc_channel
     def find_level1_data(self, **kwargs):
         ''' find level1 data
 
         :param kwargs: Parameter dictionary, support:
-            brick_id = [int]\n
-            level1_id = [int]\n
+            brick_id = [int]
+            level1_id = [int]
             module = [str],
             limit = [int]
 

csst_dfs_api_cluster/facility/detector.py

@@ -3,16 +3,17 @@ import grpc
 from csst_dfs_commons.models import Result
 from csst_dfs_commons.models.common import from_proto_model_list
 from csst_dfs_commons.models.facility import Detector, DetectorStatus
-
 from csst_dfs_proto.facility.detector import detector_pb2, detector_pb2_grpc
 
-from ..common.service import ServiceProxy
+from ..common.service import grpc_channel
 from ..common.utils import *
 
 class DetectorApi(object):
     def __init__(self):
-        self.stub = detector_pb2_grpc.DetectorSrvStub(ServiceProxy().channel())
+        self.stub_class = detector_pb2_grpc.DetectorSrvStub
+        self.stub = None
 
+    @grpc_channel
     def find(self, **kwargs):
         ''' retrieve detector records from database
 
@@ -36,6 +37,7 @@ class DetectorApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def get(self, **kwargs):
         '''  fetch a record from database
 
@@ -58,6 +60,7 @@ class DetectorApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))   
 
+    @grpc_channel
     def update(self, **kwargs):
         ''' update a detector by no
 
@@ -92,6 +95,7 @@ class DetectorApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def delete(self, **kwargs):
         ''' delete a detector by no
 
@@ -114,6 +118,7 @@ class DetectorApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def write(self, **kwargs):
         ''' insert a detector record into database
 
@@ -141,6 +146,7 @@ class DetectorApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def find_status(self, **kwargs):
         ''' retrieve a detector status's from database
 
@@ -167,6 +173,7 @@ class DetectorApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def get_status(self, **kwargs):
         '''  fetch a record from database
 
@@ -189,6 +196,7 @@ class DetectorApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))   
     
+    @grpc_channel
     def write_status(self, **kwargs):
         ''' insert a detector status into database
 

csst_dfs_api_cluster/facility/level0.py

@@ -6,13 +6,15 @@ from csst_dfs_commons.models.facility import Level0Record
 
 from csst_dfs_proto.facility.level0 import level0_pb2, level0_pb2_grpc
 
-from ..common.service import ServiceProxy
+from ..common.service import grpc_channel
 from ..common.utils import *
 
 class Level0DataApi(object):
     def __init__(self):
-        self.stub = level0_pb2_grpc.Level0SrvStub(ServiceProxy().channel())
+        self.stub_class = level0_pb2_grpc.Level0SrvStub
+        self.stub = None
 
+    @grpc_channel
     def find(self, **kwargs):
         ''' retrieve level0 records from database
 
@@ -64,6 +66,7 @@ class Level0DataApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def find_by_brick_ids(self, **kwargs):
         ''' retrieve level0 records by brick_ids like [1,2,3,4]
 
@@ -85,6 +88,7 @@ class Level0DataApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def get(self, **kwargs):
         '''  fetch a record from database
 
@@ -110,6 +114,7 @@ class Level0DataApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))   
 
+    @grpc_channel
     def update_proc_status(self, **kwargs):
         ''' update the status of reduction
 
@@ -139,6 +144,7 @@ class Level0DataApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def update_qc0_status(self, **kwargs):
         ''' update the status of QC0
         
@@ -166,6 +172,7 @@ class Level0DataApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def write(self, **kwargs):
         ''' insert a level0 data record into database
 

csst_dfs_api_cluster/facility/level0prc.py

@@ -6,13 +6,15 @@ from csst_dfs_commons.models.facility import Level0PrcRecord
 
 from csst_dfs_proto.facility.level0prc import level0prc_pb2, level0prc_pb2_grpc
 
-from ..common.service import ServiceProxy
+from ..common.service import grpc_channel
 from ..common.utils import *
 
 class Level0PrcApi(object):
     def __init__(self):
-        self.stub = level0prc_pb2_grpc.Level0PrcSrvStub(ServiceProxy().channel())
+        self.stub_class = level0prc_pb2_grpc.Level0PrcSrvStub
+        self.stub = None
 
+    @grpc_channel
     def find(self, **kwargs):
         ''' retrieve level0 procedure records from database
 
@@ -41,6 +43,7 @@ class Level0PrcApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def update_proc_status(self, **kwargs):
         ''' update the status of reduction
 
@@ -65,6 +68,7 @@ class Level0PrcApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def write(self, **kwargs):
         ''' insert a level0 procedure record into database
  

csst_dfs_api_cluster/facility/level1.py

@@ -8,7 +8,7 @@ from csst_dfs_commons.models.facility import Level1Record
 from csst_dfs_commons.models.constants import UPLOAD_CHUNK_SIZE
 from csst_dfs_proto.facility.level1 import level1_pb2, level1_pb2_grpc
 
-from ..common.service import ServiceProxy
+from ..common.service import grpc_channel
 from ..common.utils import *
 
 class Level1DataApi(object):
@@ -16,8 +16,10 @@ class Level1DataApi(object):
     Level1 Data Operation Class
     """    
     def __init__(self):
-        self.stub = level1_pb2_grpc.Level1SrvStub(ServiceProxy().channel())
+        self.stub_class = level1_pb2_grpc.Level1SrvStub
+        self.stub = None
 
+    @grpc_channel
     def find(self, **kwargs):
         ''' retrieve level1 records from database
 
@@ -64,6 +66,7 @@ class Level1DataApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def find_by_brick_ids(self, **kwargs):
         ''' retrieve level1 records by brick_ids like [1,2,3,4]
 
@@ -85,6 +88,7 @@ class Level1DataApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def find_by_ids(self, **kwargs):
         ''' retrieve level1 records by internal level1 ids like [1,2,3,4]
 
@@ -106,6 +110,7 @@ class Level1DataApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
     
+    @grpc_channel
     def sls_find_by_qc1_status(self, **kwargs):
         ''' retrieve level1 records from database
 
@@ -135,6 +140,7 @@ class Level1DataApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def get(self, **kwargs):
         '''  fetch a record from database
 
@@ -158,6 +164,7 @@ class Level1DataApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))   
 
+    @grpc_channel
     def update_proc_status(self, **kwargs):
         ''' update the status of reduction
 
@@ -181,6 +188,7 @@ class Level1DataApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def update_qc1_status(self, **kwargs):
         ''' update the status of QC0
         
@@ -202,6 +210,7 @@ class Level1DataApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def write(self, **kwargs):
         ''' insert a level1 record into database
 

csst_dfs_api_cluster/facility/level1prc.py

@@ -6,13 +6,15 @@ from csst_dfs_commons.models.facility import Level1PrcRecord
 
 from csst_dfs_proto.facility.level1prc import level1prc_pb2, level1prc_pb2_grpc
 
-from ..common.service import ServiceProxy
+from ..common.service import grpc_channel
 from ..common.utils import *
 
 class Level1PrcApi(object):
     def __init__(self):
-        self.stub = level1prc_pb2_grpc.Level1PrcSrvStub(ServiceProxy().channel())
+        self.stub_class = level1prc_pb2_grpc.Level1PrcSrvStub
+        self.stub = None
 
+    @grpc_channel
     def find(self, **kwargs):
         ''' retrieve level1 procedure records from database
 
@@ -41,6 +43,7 @@ class Level1PrcApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def update_proc_status(self, **kwargs):
         ''' update the status of reduction
 
@@ -65,6 +68,7 @@ class Level1PrcApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def write(self, **kwargs):
         ''' insert a level1 procedure record into database
 
@@ -98,6 +102,3 @@ class Level1PrcApi(object):
                 return Result.error(message = str(resp.error.detail))
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
-
-   
-

csst_dfs_api_cluster/facility/level2.py

@@ -11,7 +11,7 @@ from csst_dfs_commons.models.common import from_proto_model_list
 from csst_dfs_commons.models.level2 import Level2Record, filter_table_name
 from csst_dfs_commons.models.constants import UPLOAD_CHUNK_SIZE
 from csst_dfs_proto.facility.level2 import level2_pb2, level2_pb2_grpc
-from ..common.service import ServiceProxy
+from ..common.service import grpc_channel
 from ..common.utils import *
 
 class Level2DataApi(object):
@@ -19,8 +19,10 @@ class Level2DataApi(object):
     Level2 Data Operation Class
     """    
     def __init__(self):
-        self.stub = level2_pb2_grpc.Level2SrvStub(ServiceProxy().channel())
+        self.stub_class = level2_pb2_grpc.Level2SrvStub
+        self.stub = None
 
+    @grpc_channel
     def find(self, **kwargs):
         ''' retrieve level2 records from database
 
@@ -69,6 +71,7 @@ class Level2DataApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def catalog_columns(self, **kwargs):
         ''' retrieve columns data type
 
@@ -87,6 +90,7 @@ class Level2DataApi(object):
             resp['totalCount'] = len(resp['data'])
         return resp
 
+    @grpc_channel
     def catalog_query(self, **kwargs):
         ''' retrieve level2catalog records from database
 
@@ -117,6 +121,7 @@ class Level2DataApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def coord_cond_sql(self, **kwargs):
         ''' generate coordinate search condition sql
 
@@ -144,6 +149,7 @@ class Level2DataApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
         
+    @grpc_channel
     def find_existed_brick_ids(self, **kwargs):
         ''' retrieve existed brick_ids in a single exposure catalog
 
@@ -164,6 +170,7 @@ class Level2DataApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def get(self, **kwargs):
         '''  fetch a record from database
 
@@ -185,6 +192,7 @@ class Level2DataApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))   
 
+    @grpc_channel
     def update_proc_status(self, **kwargs):
         ''' update the status of reduction
 
@@ -208,6 +216,7 @@ class Level2DataApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
         
+    @grpc_channel
     def update_qc2_status(self, **kwargs):
         ''' update the status of QC0
         
@@ -229,6 +238,7 @@ class Level2DataApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
     
+    @grpc_channel
     def write(self, **kwargs):
         ''' insert a level2 record into database
 

csst_dfs_api_cluster/facility/level2producer.py

@@ -6,7 +6,7 @@ from csst_dfs_commons.models.facility import Level2Producer, Level2Job, Level2Pr
 
 from csst_dfs_proto.facility.level2producer import level2producer_pb2, level2producer_pb2_grpc
 
-from ..common.service import ServiceProxy
+from ..common.service import grpc_channel
 from ..common.utils import *
 from ..common.constants import UPLOAD_CHUNK_SIZE
 
@@ -15,8 +15,10 @@ class Level2ProducerApi(object):
     Level2Producer Operation Class
     """    
     def __init__(self):
-        self.stub = level2producer_pb2_grpc.Level2ProducerSrvStub(ServiceProxy().channel())
+        self.stub_class = level2producer_pb2_grpc.Level2ProducerSrvStub
+        self.stub = None
 
+    @grpc_channel
     def register(self, **kwargs):
         ''' register a Level2Producer data record into database
  
@@ -48,6 +50,7 @@ class Level2ProducerApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def find(self, **kwargs):
         ''' retrieve Level2Producer records from database
 
@@ -70,6 +73,7 @@ class Level2ProducerApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def get(self, **kwargs):
         '''  fetch a record from database
 
@@ -92,6 +96,7 @@ class Level2ProducerApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))        
 
+    @grpc_channel
     def find_nexts(self, **kwargs):
         ''' retrieve Level2Producer records from database
 
@@ -113,6 +118,7 @@ class Level2ProducerApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def find_start(self, **kwargs):
         ''' retrieve Level2Producer records from database
 
@@ -135,6 +141,7 @@ class Level2ProducerApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))            
 
+    @grpc_channel
     def update(self, **kwargs):
         ''' update a Level2Producer
         
@@ -168,6 +175,7 @@ class Level2ProducerApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def delete(self, **kwargs):
         ''' delete a Level2Producer data
 
@@ -189,6 +197,7 @@ class Level2ProducerApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def new_job(self, **kwargs):
         ''' new a Level2Producer Job
 
@@ -213,6 +222,7 @@ class Level2ProducerApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def get_job(self, **kwargs):
         '''  fetch a record from database
 
@@ -235,6 +245,7 @@ class Level2ProducerApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))  
 
+    @grpc_channel
     def update_job(self, **kwargs):
         ''' update a Level2Producer Job
 
@@ -262,6 +273,7 @@ class Level2ProducerApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))   
 
+    @grpc_channel
     def new_running(self, **kwargs):
         ''' insert a Level2ProducerRuningRecord data
 
@@ -296,6 +308,7 @@ class Level2ProducerApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def get_running(self, **kwargs):
         '''  fetch a record from database
 
@@ -318,6 +331,7 @@ class Level2ProducerApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))  
 
+    @grpc_channel
     def update_running(self, **kwargs):
         ''' udpate a Level2ProducerRuningRecord data
 
@@ -354,6 +368,7 @@ class Level2ProducerApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def find_running(self, **kwargs):
         ''' find Level2ProducerRuningRecord data
 

csst_dfs_api_cluster/facility/level2type.py

@@ -12,7 +12,7 @@ from csst_dfs_commons.models.level2 import Level2TypeRecord
 from csst_dfs_commons.models.constants import UPLOAD_CHUNK_SIZE
 from csst_dfs_proto.facility.level2type import level2type_pb2, level2type_pb2_grpc
 
-from ..common.service import ServiceProxy
+from ..common.service import grpc_channel
 from ..common.utils import *
 
 class Level2TypeApi(object):
@@ -20,8 +20,10 @@ class Level2TypeApi(object):
     Level2Type Data Operation Class
     """    
     def __init__(self):
-        self.stub = level2type_pb2_grpc.Level2TypeSrvStub(ServiceProxy().channel())
+        self.stub_class = level2type_pb2_grpc.Level2TypeSrvStub
+        self.stub = None
 
+    @grpc_channel
     def find(self, **kwargs):
         ''' retrieve level2type records from database
 
@@ -54,7 +56,7 @@ class Level2TypeApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
-
+    @grpc_channel
     def get(self, **kwargs):
         '''  fetch a record from database
 
@@ -76,6 +78,7 @@ class Level2TypeApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))   
 
+    @grpc_channel
     def update_import_status(self, **kwargs):
         ''' update the status of level2 type
 
@@ -99,7 +102,7 @@ class Level2TypeApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
-
+    @grpc_channel
     def write(self, **kwargs):
         ''' insert a level2type record into database
 

csst_dfs_api_cluster/facility/observation.py

@@ -3,10 +3,9 @@ import grpc
 from csst_dfs_commons.models import Result
 from csst_dfs_commons.models.common import from_proto_model_list
 from csst_dfs_commons.models.facility import Observation
-
 from csst_dfs_proto.facility.observation import observation_pb2, observation_pb2_grpc
 
-from ..common.service import ServiceProxy
+from ..common.service import grpc_channel
 from ..common.utils import *
 from ..common.constants import UPLOAD_CHUNK_SIZE
 
@@ -15,8 +14,10 @@ class ObservationApi(object):
     Observation Operation Class
     """    
     def __init__(self):
-        self.stub = observation_pb2_grpc.ObservationSrvStub(ServiceProxy().channel())
+        self.stub_class = observation_pb2_grpc.ObservationSrvStub
+        self.stub = None
 
+    @grpc_channel
     def find(self, **kwargs):
         ''' retrieve exposure records from database
 
@@ -50,6 +51,7 @@ class ObservationApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def get(self, **kwargs):
         '''  fetch a record from database
 
@@ -75,6 +77,7 @@ class ObservationApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))        
 
+    @grpc_channel
     def update_proc_status(self, **kwargs):
         ''' update the status of reduction
 
@@ -103,6 +106,7 @@ class ObservationApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def update_qc0_status(self, **kwargs):
         ''' update the status of QC0
         
@@ -129,6 +133,7 @@ class ObservationApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def write(self, **kwargs):
         ''' insert a observational record into database
 
@@ -164,6 +169,3 @@ class ObservationApi(object):
     
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
-
-   
-

csst_dfs_api_cluster/facility/otherdata.py

@@ -8,7 +8,7 @@ from csst_dfs_commons.models.facility import OtherDataRecord
 from csst_dfs_commons.models.constants import UPLOAD_CHUNK_SIZE
 from csst_dfs_proto.facility.otherdata import otherdata_pb2, otherdata_pb2_grpc
 
-from ..common.service import ServiceProxy
+from ..common.service import grpc_channel
 from ..common.utils import *
 
 class OtherDataApi(object):
@@ -16,8 +16,10 @@ class OtherDataApi(object):
     OtherData Data Operation Class
     """    
     def __init__(self):
-        self.stub = otherdata_pb2_grpc.OtherDataSrvStub(ServiceProxy().channel())
+        self.stub_class = otherdata_pb2_grpc.OtherDataSrvStub
+        self.stub = None
 
+    @grpc_channel
     def find(self, **kwargs):
         ''' retrieve otherdata records from database
 
@@ -55,6 +57,7 @@ class OtherDataApi(object):
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
 
+    @grpc_channel
     def get(self, **kwargs):
         '''  fetch a record from database
 
@@ -77,6 +80,7 @@ class OtherDataApi(object):
             return Result.error(message="%s:%s" % (e.code().value, e.details()))   
 
 
+    @grpc_channel
     def write(self, **kwargs):
         ''' insert a otherdata record into database
 

csst_dfs_api_cluster/hstdm/level2.py

@@ -8,7 +8,7 @@ from csst_dfs_commons.models.hstdm import Level2Data
 from csst_dfs_commons.models.constants import UPLOAD_CHUNK_SIZE
 from csst_dfs_proto.hstdm.level2 import level2_pb2, level2_pb2_grpc
 
-from ..common.service import ServiceProxy
+from ..common.service import grpc_channel
 from ..common.utils import *
 
 class Level2DataApi(object):
@@ -16,8 +16,10 @@ class Level2DataApi(object):
     Level2 Data Operation Class
     """    
     def __init__(self):
-        self.stub = level2_pb2_grpc.Level2SrvStub(ServiceProxy().channel())
+        self.stub = level2_pb2_grpc.Level2SrvStub
+        self.stub = None
 
+    @grpc_channel
     def find(self, **kwargs):
         ''' retrieve level2 records from database
 
@@ -57,6 +59,7 @@ class Level2DataApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def get(self, **kwargs):
         '''  fetch a record from database
 
@@ -79,6 +82,7 @@ class Level2DataApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))   
 
+    @grpc_channel
     def update_proc_status(self, **kwargs):
         ''' update the status of reduction
 
@@ -101,7 +105,7 @@ class Level2DataApi(object):
                 return Result.error(message = str(resp.error.detail))
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
-
+    @grpc_channel
     def update_qc2_status(self, **kwargs):
         ''' update the status of QC2
         
@@ -123,6 +127,7 @@ class Level2DataApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def write(self, **kwargs):
         ''' insert a level2 record into database
 

csst_dfs_api_cluster/mbi/__init__.py

-from .level2 import Level2DataApi
-from .level2co import Level2CoApi
\ No newline at end of file

csst_dfs_api_cluster/mbi/level2.py

-import io
-import os
-import grpc
-import datetime
-import pickle
-
-from collections.abc import Iterable
-
-from csst_dfs_commons.models import Result
-from csst_dfs_commons.models.common import from_proto_model_list
-from csst_dfs_commons.models.msc import Level2Record
-from csst_dfs_commons.models.constants import UPLOAD_CHUNK_SIZE
-from csst_dfs_proto.msc.level2 import level2_pb2, level2_pb2_grpc
-
-from ..common.service import ServiceProxy
-from ..common.utils import *
-
-class Level2DataApi(object):
-    """
-    Level2 Data Operation Class
-    """    
-    def __init__(self):
-        self.stub = level2_pb2_grpc.Level2SrvStub(ServiceProxy().channel())
-
-    def find(self, **kwargs):
-        ''' retrieve level2 records from database
-
-        parameter kwargs:
-            level0_id: [str]
-            level1_id: [int]
-            data_type: [str]
-            create_time : (start, end),
-            qc2_status : [int],
-            prc_status : [int],
-            filename: [str]
-            limit: limits returns the number of records,default 0:no-limit
-
-        return: csst_dfs_common.models.Result
-        '''
-        try:
-            resp, _ =  self.stub.Find.with_call(level2_pb2.FindLevel2Req(
-                level0_id = get_parameter(kwargs, "level0_id"),
-                level1_id = get_parameter(kwargs, "level1_id"),
-                data_type = get_parameter(kwargs, "data_type"),
-                create_time_start = get_parameter(kwargs, "create_time", [None, None])[0],
-                create_time_end = get_parameter(kwargs, "create_time", [None, None])[1],
-                qc2_status = get_parameter(kwargs, "qc2_status", 1024),
-                prc_status = get_parameter(kwargs, "prc_status", 1024),
-                filename = get_parameter(kwargs, "filename"),
-                limit = get_parameter(kwargs, "limit", 0),
-                other_conditions = {"test":"cnlab.test"}
-            ),metadata = get_auth_headers())
-
-            if resp.success:
-                return Result.ok_data(data=from_proto_model_list(Level2Record, resp.records)).append("totalCount", resp.totalCount)
-            else:
-                return Result.error(message = str(resp.error.detail))
-
-        except grpc.RpcError as e:
-            return Result.error(message="%s:%s" % (e.code().value, e.details()))
-
-    def catalog_query(self, **kwargs):
-        ''' retrieve level2catalog records from database
-
-        parameter kwargs:
-            brick_ids: list[int]
-            obs_id: [str]
-            detector_no: [str]
-            filter: [str]
-            ra:  [float] in deg
-            dec: [float] in deg
-            radius:  [float] in deg   
-            obs_time: (start, end),
-            limit: limits returns the number of records,default 0:no-limit
-
-        return: csst_dfs_common.models.Result
-        '''
-        try:
-            datas = io.BytesIO()
-            totalCount = 0         
-            
-            brick_ids = get_parameter(kwargs, "brick_ids", [])
-            if not isinstance(brick_ids,Iterable):
-                brick_ids = [brick_ids]
-
-            resps =  self.stub.FindCatalog(level2_pb2.FindLevel2CatalogReq(
-                brick_ids = ",".join([str(i) for i in brick_ids]),
-                obs_id = get_parameter(kwargs, "obs_id", None),
-                detector_no = get_parameter(kwargs, "detector_no", None),
-                filter = get_parameter(kwargs, "filter", None),
-                obs_time_start = get_parameter(kwargs, "obs_time", [None, None])[0],
-                obs_time_end = get_parameter(kwargs, "obs_time", [None, None])[1],
-                ra = get_parameter(kwargs, "ra"),
-                dec = get_parameter(kwargs, "dec"),
-                radius = get_parameter(kwargs, "radius"),
-                minMag = get_parameter(kwargs, "min_mag"),
-                maxMag = get_parameter(kwargs, "max_mag"),
-                limit = get_parameter(kwargs, "limit", 0),
-                columns = ",".join(get_parameter(kwargs, "columns", "*"))
-            ),metadata = get_auth_headers())
-            
-            for resp in resps:
-                if resp.success:
-                    datas.write(resp.records)
-                    totalCount = resp.totalCount
-                else:
-                    return Result.error(message = str(resp.error.detail))
-            datas.flush()
-            records = pickle.loads(datas.getvalue())
-            return Result.ok_data(data = records[0]).append("totalCount", totalCount).append("columns", records[1])
-        except grpc.RpcError as e:
-            return Result.error(message="%s:%s" % (e.code().value, e.details()))
-
-    def catalog_query_file(self, **kwargs):
-        ''' retrieve level2catalog records from database
-
-        parameter kwargs:
-            brick_ids: list[int]
-            obs_id: [str]
-            detector_no: [str]
-            filter: [str]
-            ra:  [float] in deg
-            dec: [float] in deg
-            radius:  [float] in deg   
-            obs_time: (start, end),
-            limit: limits returns the number of records,default 0:no-limit
-
-        return: csst_dfs_common.models.Result
-        '''
-        try:
-
-            brick_ids = get_parameter(kwargs, "brick_ids", [])
-            if not isinstance(brick_ids, Iterable):
-                brick_ids = [brick_ids]
-
-            resp, _ =  self.stub.FindCatalogFile.with_call(level2_pb2.FindLevel2CatalogReq(
-                brick_ids = ",".join([str(i) for i in brick_ids]),
-                obs_id = get_parameter(kwargs, "obs_id"),
-                detector_no = get_parameter(kwargs, "detector_no"),
-                filter = get_parameter(kwargs, "filter", None),
-                obs_time_start = get_parameter(kwargs, "obs_time", [None, None])[0],
-                obs_time_end = get_parameter(kwargs, "obs_time", [None, None])[1],
-                ra = get_parameter(kwargs, "ra"),
-                dec = get_parameter(kwargs, "dec"),
-                radius = get_parameter(kwargs, "radius"),
-                minMag = get_parameter(kwargs, "min_mag"),
-                maxMag = get_parameter(kwargs, "max_mag"),
-                limit = get_parameter(kwargs, "limit", 0)
-            ),metadata = get_auth_headers())
-
-            if resp.success:
-                return Result.ok_data(data=from_proto_model_list(Level2Record, resp.records)).append("totalCount", resp.totalCount)
-            else:
-                return Result.error(message = str(resp.error.detail))
-
-        except grpc.RpcError as e:
-            return Result.error(message="%s:%s" % (e.code().value, e.details()))
-
-    def find_existed_brick_ids(self, **kwargs):
-        ''' retrieve existed brick_ids in a single exposure catalog
-
-        parameter kwargs:
-        return: csst_dfs_common.models.Result
-        '''
-        try:
-            resp =  self.stub.FindExistedBricks(level2_pb2.FindExistedBricksReq(),metadata = get_auth_headers())
-
-            if resp.success:
-                return Result.ok_data(data = resp.brick_ids)
-            else:
-                return Result.error(message = str(resp.error.detail))
-
-        except grpc.RpcError as e:
-            return Result.error(message="%s:%s" % (e.code().value, e.details()))
-
-    def get(self, **kwargs):
-        '''  fetch a record from database
-
-        parameter kwargs:
-            id : [int] 
-
-        return csst_dfs_common.models.Result
-        '''
-        try:
-            resp, _ =  self.stub.Get.with_call(level2_pb2.GetLevel2Req(
-                id = get_parameter(kwargs, "id")
-            ),metadata = get_auth_headers())
-
-            if resp.record is None or resp.record.id == 0:
-                return Result.error(message=f"data not found")  
-
-            return Result.ok_data(data = Level2Record().from_proto_model(resp.record))
-
-        except grpc.RpcError as e:
-            return Result.error(message="%s:%s" % (e.code().value, e.details()))   
-
-    def update_proc_status(self, **kwargs):
-        ''' update the status of reduction
-
-        parameter kwargs:
-            id : [int],
-            status : [int]
-
-        return csst_dfs_common.models.Result
-        '''
-        fits_id = get_parameter(kwargs, "id")
-        status = get_parameter(kwargs, "status")
-        try:
-            resp,_ = self.stub.UpdateProcStatus.with_call(
-                level2_pb2.UpdateProcStatusReq(id=fits_id, status=status),
-                metadata = get_auth_headers()
-            )
-            if resp.success:
-                return Result.ok_data()
-            else:
-                return Result.error(message = str(resp.error.detail))
-        except grpc.RpcError as e:
-            return Result.error(message="%s:%s" % (e.code().value, e.details()))
-
-    def update_qc2_status(self, **kwargs):
-        ''' update the status of QC0
-        
-        parameter kwargs:
-            id : [int],
-            status : [int]
-        '''        
-        fits_id = get_parameter(kwargs, "id")
-        status = get_parameter(kwargs, "status")
-        try:
-            resp,_ = self.stub.UpdateQc2Status.with_call(
-                level2_pb2.UpdateQc2StatusReq(id=fits_id, status=status),
-                metadata = get_auth_headers()
-            )
-            if resp.success:
-                return Result.ok_data()
-            else:
-                return Result.error(message = str(resp.error.detail))
-        except grpc.RpcError as e:
-            return Result.error(message="%s:%s" % (e.code().value, e.details()))
-
-    def write(self, **kwargs):
-        ''' insert a level2 record into database
- 
-        parameter kwargs:
-            level1_id : [int]
-            data_type : [str]
-            filename : [str]
-            file_path : [str]            
-            prc_status : [int]
-            prc_time : [str]
-
-        return csst_dfs_common.models.Result
-        '''   
-
-        rec = level2_pb2.Level2Record(
-            id = 0,
-            level1_id = get_parameter(kwargs, "level1_id"),
-            data_type = get_parameter(kwargs, "data_type"),
-            filename = get_parameter(kwargs, "filename", ""),
-            file_path = get_parameter(kwargs, "file_path", ""),
-            qc2_status = get_parameter(kwargs, "qc2_status", 0),
-            prc_status = get_parameter(kwargs, "prc_status", 0),
-            prc_time = get_parameter(kwargs, "prc_time", format_datetime(datetime.now())),
-            pipeline_id = get_parameter(kwargs, "pipeline_id", "")
-        )
-        def stream(rec):
-            with open(rec.file_path, 'rb') as f:
-                while True:
-                    data = f.read(UPLOAD_CHUNK_SIZE)
-                    if not data:
-                        break
-                    yield level2_pb2.WriteLevel2Req(record = rec, data = data)
-        try:
-            if not rec.file_path:
-                return Result.error(message="file_path is blank")
-            if not os.path.exists(rec.file_path):
-                return Result.error(message="the file [%s] not existed" % (rec.file_path, ))
-            if not rec.filename:
-                rec.filename = os.path.basename(rec.file_path)
-
-            resp,_ = self.stub.Write.with_call(stream(rec),metadata = get_auth_headers())
-            if resp.success:
-                return Result.ok_data(data=Level2Record().from_proto_model(resp.record))
-            else:
-                return Result.error(message = str(resp.error.detail))
-        except grpc.RpcError as e:
-            return Result.error(message="%s:%s" % (e.code().value, e.details()))

csst_dfs_api_cluster/mbi/level2co.py

-import io
-import os
-import grpc
-import datetime
-
-from csst_dfs_commons.models import Result
-from csst_dfs_commons.models.common import from_proto_model_list
-from csst_dfs_commons.models.msc import Level2CoRecord,Level2CoCatalogRecord
-from csst_dfs_commons.models.constants import UPLOAD_CHUNK_SIZE
-from csst_dfs_proto.msc.level2co import level2co_pb2, level2co_pb2_grpc
-
-from ..common.service import ServiceProxy
-from ..common.utils import *
-
-class Level2CoApi(object):
-    """
-    Level2 Merge Catalog Operation Class
-    """    
-    def __init__(self):
-        self.stub = level2co_pb2_grpc.Level2CoSrvStub(ServiceProxy().channel())
-
-    def find(self, **kwargs):
-        ''' retrieve level2 records from database
-
-        parameter kwargs:
-            data_type: [str]
-            create_time : (start, end),
-            qc2_status : [int],
-            prc_status : [int],
-            filename: [str]
-            limit: limits returns the number of records,default 0:no-limit
-
-        return: csst_dfs_common.models.Result
-        '''
-        try:
-            resp, _ =  self.stub.Find.with_call(level2co_pb2.FindLevel2CoReq(
-                data_type = get_parameter(kwargs, "data_type"),
-                create_time_start = get_parameter(kwargs, "create_time", [None, None])[0],
-                create_time_end = get_parameter(kwargs, "create_time", [None, None])[1],
-                qc2_status = get_parameter(kwargs, "qc2_status"),
-                prc_status = get_parameter(kwargs, "prc_status"),
-                filename = get_parameter(kwargs, "filename"),
-                limit = get_parameter(kwargs, "limit", 0),
-                other_conditions = {"test":"cnlab.test"}
-            ),metadata = get_auth_headers())
-
-            if resp.success:
-                return Result.ok_data(data=from_proto_model_list(Level2CoRecord, resp.records)).append("totalCount", resp.totalCount)
-            else:
-                return Result.error(message = str(resp.error.detail))
-
-        except grpc.RpcError as e:
-            return Result.error(message="%s:%s" % (e.code().value, e.details()))
-
-    def catalog_query(self, **kwargs):
-        ''' retrieve level2catalog records from database
-
-        parameter kwargs:
-            obs_id: [str]
-            detector_no: [str]
-            ra:  [float] in deg
-            dec: [float] in deg
-            radius:  [float] in deg   
-            min_mag: [float]
-            max_mag: [float]
-            obs_time: (start, end),
-            limit: limits returns the number of records,default 0:no-limit
-
-        return: csst_dfs_common.models.Result
-        '''
-        try:
-            resp, _ =  self.stub.FindCatalog.with_call(level2co_pb2.FindLevel2CoCatalogReq(
-                obs_id = get_parameter(kwargs, "obs_id"),
-                detector_no = get_parameter(kwargs, "detector_no"),
-                obs_time_start = get_parameter(kwargs, "obs_time", [None, None])[0],
-                obs_time_end = get_parameter(kwargs, "obs_time", [None, None])[1],
-                ra = get_parameter(kwargs, "ra"),
-                dec = get_parameter(kwargs, "dec"),
-                radius = get_parameter(kwargs, "radius"),
-                minMag = get_parameter(kwargs, "min_mag"),
-                maxMag = get_parameter(kwargs, "max_mag"),
-                limit = get_parameter(kwargs, "limit", 0)
-            ),metadata = get_auth_headers())
-
-            if resp.success:
-                return Result.ok_data(data=from_proto_model_list(Level2CoCatalogRecord, resp.records)).append("totalCount", resp.totalCount)
-            else:
-                return Result.error(message = str(resp.error.detail))
-
-        except grpc.RpcError as e:
-            return Result.error(message="%s:%s" % (e.code().value, e.details()))
-
-    def get(self, **kwargs):
-        '''  fetch a record from database
-
-        parameter kwargs:
-            id : [int] 
-
-        return csst_dfs_common.models.Result
-        '''
-        try:
-            resp, _ =  self.stub.Get.with_call(level2co_pb2.GetLevel2CoReq(
-                id = get_parameter(kwargs, "id")
-            ),metadata = get_auth_headers())
-
-            if resp.record is None or resp.record.id == 0:
-                return Result.error(message=f"data not found")  
-
-            return Result.ok_data(data = Level2CoRecord().from_proto_model(resp.record))
-           
-        except grpc.RpcError as e:
-            return Result.error(message="%s:%s" % (e.code().value, e.details()))   
-
-    def update_proc_status(self, **kwargs):
-        ''' update the status of reduction
-
-        parameter kwargs:
-            id : [int],
-            status : [int]
-
-        return csst_dfs_common.models.Result
-        '''
-        fits_id = get_parameter(kwargs, "id")
-        status = get_parameter(kwargs, "status")
-        try:
-            resp,_ = self.stub.UpdateProcStatus.with_call(
-                level2co_pb2.UpdateProcStatusReq(id=fits_id, status=status),
-                metadata = get_auth_headers()
-            )
-            if resp.success:
-                return Result.ok_data()
-            else:
-                return Result.error(message = str(resp.error.detail))
-        except grpc.RpcError as e:
-            return Result.error(message="%s:%s" % (e.code().value, e.details()))
-
-    def update_qc2_status(self, **kwargs):
-        ''' update the status of QC0
-        
-        parameter kwargs:
-            id : [int],
-            status : [int]
-        '''        
-        fits_id = get_parameter(kwargs, "id")
-        status = get_parameter(kwargs, "status")
-        try:
-            resp,_ = self.stub.UpdateQc2Status.with_call(
-                level2co_pb2.UpdateQc2StatusReq(id=fits_id, status=status),
-                metadata = get_auth_headers()
-            )
-            if resp.success:
-                return Result.ok_data()
-            else:
-                return Result.error(message = str(resp.error.detail))
-        except grpc.RpcError as e:
-            return Result.error(message="%s:%s" % (e.code().value, e.details()))
-
-    def write(self, **kwargs):
-        ''' insert a level2 record into database
-
-        parameter kwargs:
-            data_type : [str]
-            filename : [str]
-            file_path : [str]            
-            prc_status : [int]
-            prc_time : [str]
-
-        return csst_dfs_common.models.Result
-        '''   
-
-        rec = level2co_pb2.Level2CoRecord(
-            id = 0,
-            data_type = get_parameter(kwargs, "data_type"),
-            filename = get_parameter(kwargs, "filename", ""),
-            file_path = get_parameter(kwargs, "file_path", ""),
-            qc2_status = get_parameter(kwargs, "qc2_status", 0),
-            prc_status = get_parameter(kwargs, "prc_status", 0),
-            prc_time = get_parameter(kwargs, "prc_time", format_datetime(datetime.now())),
-            pipeline_id = get_parameter(kwargs, "pipeline_id", "")
-        )
-        def stream(rec):
-            with open(rec.file_path, 'rb') as f:
-                while True:
-                    data = f.read(UPLOAD_CHUNK_SIZE)
-                    if not data:
-                        break
-                    yield level2co_pb2.WriteLevel2CoReq(record = rec, data = data)
-        try:
-            if not rec.file_path:
-                return Result.error(message="file_path is blank")
-            if not os.path.exists(rec.file_path):
-                return Result.error(message="the file [%s] not existed" % (rec.file_path, ))
-            if not rec.filename:
-                rec.filename = os.path.basename(rec.file_path)
-
-            resp,_ = self.stub.Write.with_call(stream(rec),metadata = get_auth_headers())
-            if resp.success:
-                return Result.ok_data(data=Level2CoRecord().from_proto_model(resp.record))
-            else:
-                return Result.error(message = str(resp.error.detail))
-        except grpc.RpcError as e:
-            return Result.error(message="%s:%s" % (e.code().value, e.details()))

csst_dfs_api_cluster/sls/level2spectra.py

@@ -8,7 +8,7 @@ from csst_dfs_commons.models.sls import Level2Spectra
 from csst_dfs_commons.models.constants import UPLOAD_CHUNK_SIZE
 from csst_dfs_proto.sls.level2spectra import level2spectra_pb2, level2spectra_pb2_grpc
 
-from ..common.service import ServiceProxy
+from ..common.service import grpc_channel
 from ..common.utils import *
 
 class Level2SpectraApi(object):
@@ -16,8 +16,10 @@ class Level2SpectraApi(object):
     Level2spectra Data Operation Class
     """    
     def __init__(self):
-        self.stub = level2spectra_pb2_grpc.Level2spectraSrvStub(ServiceProxy().channel())
+        self.stub_class = level2spectra_pb2_grpc.Level2spectraSrvStub
+        self.stub = None
 
+    @grpc_channel
     def find(self, **kwargs):
         ''' retrieve level2spectra records from database
 
@@ -55,6 +57,7 @@ class Level2SpectraApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def get(self, **kwargs):
         '''  fetch a record from database
 
@@ -77,6 +80,7 @@ class Level2SpectraApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))   
 
+    @grpc_channel
     def update_proc_status(self, **kwargs):
         ''' update the status of reduction
 
@@ -100,6 +104,7 @@ class Level2SpectraApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def update_qc2_status(self, **kwargs):
         ''' update the status of QC2
         
@@ -121,6 +126,7 @@ class Level2SpectraApi(object):
         except grpc.RpcError as e:
             return Result.error(message="%s:%s" % (e.code().value, e.details()))
 
+    @grpc_channel
     def write(self, **kwargs):
         ''' insert a level2spectra record into database