Merge pull request #1467 from felixhjh/develop

new error catch function

doc/Quick_Start_CN.md

@@ -123,3 +123,13 @@ python3 pipeline_rpc_client.py
 ```
 {'err_no': 0, 'err_msg': '', 'key': ['res'], 'value': ["['土地整治与土壤修复研究中心', '华南农业大学1素图']"]}
 ```
+
+<h3 align="center">关闭Serving/Pipeline服务</h3>
+
+**方式一** ：Ctrl+C关停服务
+
+**方式二** ：在启动Serving/Pipeline服务路径或者环境变量SERVING_HOME路径下(该路径下存在文件ProcessInfo.json)
+
+```
+python3 -m paddle_serving_server.serve stop
+```

doc/Quick_Start_EN.md

@@ -94,3 +94,13 @@ output
 ```
 {'err_no': 0, 'err_msg': '', 'key': ['res'], 'value': ["['土地整治与土壤修复研究中心', '华南农业大学1素图']"]}
 ```
+
+<h3 align="center">Stop Serving/Pipeline service</h3>
+
+**Method one** ：Ctrl+C to quit
+
+**Method Two** ：In the path where starting the Serving/Pipeline service or the path which environment variable SERVING_HOME set (the file named ProcessInfo.json exists in this path)
+
+```
+python3 -m paddle_serving_server.serve stop
+```

doc/Serving_Configure_CN.md

@@ -59,7 +59,7 @@ fetch_var {
 
 ## C++ Serving
 
-### 1.快速启动
+### 1.快速启动与关闭
 
 可以通过配置模型及端口号快速启动服务，启动命令如下：
 
@@ -108,6 +108,11 @@ python3 -m paddle_serving_server.serve --model serving_model --thread 10 --port
 ```BASH
 python3 -m paddle_serving_server.serve --model serving_model_1 serving_model_2 --thread 10 --port 9292
 ```
+#### 当您想要关闭Serving服务时（在Serving启动目录或环境变量SERVING_HOME路径下，执行以下命令）.
+```BASH
+python3 -m paddle_serving_server.serve stop
+```
+stop参数发送SIGINT至C++ Serving，若改成kill则发送SIGKILL信号至C++ Serving
 
 ### 2.自定义配置启动
 
@@ -315,7 +320,20 @@ fetch_var {
 ```
 
 ## Python Pipeline
+### 快速启动与关闭
+Python Pipeline启动命令如下：
+
+```BASH
+python3 web_service.py
+```
+
+当您想要关闭Serving服务时（在Pipeline启动目录下或环境变量SERVING_HOME路径下，执行以下命令）：
+```BASH
+python3 -m paddle_serving_server.serve stop
+```
+stop参数发送SIGINT至Pipeline Serving，若改成kill则发送SIGKILL信号至Pipeline Serving
 
+### 配置文件
 Python Pipeline提供了用户友好的多模型组合服务编程框架，适用于多模型组合应用的场景。
 其配置文件为YAML格式，一般默认为config.yaml。示例如下：
 ```YAML

doc/Serving_Configure_EN.md

@@ -108,7 +108,7 @@ python3 -m paddle_serving_server.serve --model serving_model --thread 10 --port
 ```BASH
 python3 -m paddle_serving_server.serve --model serving_model_1 serving_model_2 --thread 10 --port 9292
 ```
-#### Stop Serving.
+#### Stop Serving(execute the following command in the directory where start serving or the path which environment variable SERVING_HOME set).
 ```BASH
 python3 -m paddle_serving_server.serve stop
 ```
@@ -328,9 +328,9 @@ fetch_var {
 
 Example starting Pipeline Serving:
 ```BASH
-python3 -m paddle_serving_server.serve --model serving_model --port 9393
+python3 web_service.py
 ```
-### Stop Serving.
+### Stop Serving(execute the following command in the directory where start Pipeline serving or the path which environment variable SERVING_HOME set).
 ```BASH
 python3 -m paddle_serving_server.serve stop
 ```

python/paddle_serving_server/env_check/fit_a_line/uci_housing_client/serving_client_conf.prototxt

+feed_var {
+  name: "x"
+  alias_name: "x"
+  is_lod_tensor: false
+  feed_type: 1
+  shape: 13
+}
+fetch_var {
+  name: "fc_0.tmp_1"
+  alias_name: "price"
+  is_lod_tensor: false
+  fetch_type: 1
+  shape: 1
+}

python/paddle_serving_server/env_check/fit_a_line/uci_housing_model/serving_server_conf.prototxt

+feed_var {
+  name: "x"
+  alias_name: "x"
+  is_lod_tensor: false
+  feed_type: 1
+  shape: 13
+}
+fetch_var {
+  name: "fc_0.tmp_1"
+  alias_name: "price"
+  is_lod_tensor: false
+  fetch_type: 1
+  shape: 1
+}

python/paddle_serving_server/env_check/run.py

+import pytest
+# coding:utf-8
+# Copyright (c) 2020  PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+'''
+This module is used to check whether the running environment for PaddleServing is configured correctly.
+
+Two test cases are set for verifying the smooth of environment, fit a line test case for C++ Serving environment and uci for Pipeline Serving enviroment
+
+Usage: export PYTHON_EXECUTABLE=/usr/local/bin/python3.6
+       python3.6 -m paddle_serving_server.serve check
+'''
+
+
+import sys
+import os
+
+cpp_test_cases = ["test_fit_a_line.py::TestFitALine::test_cpu", "test_fit_a_line.py::TestFitALine::test_gpu"]
+pipeline_test_cases = ["test_uci_pipeline.py::TestUCIPipeline::test_cpu", "test_uci_pipeline.py::TestUCIPipeline::test_gpu"]
+
+def run_test_cases(cases_list, case_type):
+    old_stdout, old_stderr = sys.stdout, sys.stderr
+    real_path = os.path.dirname(os.path.realpath(__file__))
+    for case in cases_list:
+        sys.stdout = open('/dev/null', 'w')
+        sys.stderr = open('/dev/null', 'w')
+        args_str = "--disable-warnings " + str(real_path) + "/" + case
+        args = args_str.split(" ")
+        res = pytest.main(args)
+        sys.stdout, sys.stderr = old_stdout, old_stderr
+        if res == 0:
+            print("{} {} environment running success".format(case_type, case[-3:]))
+        else:
+            print("{} {} environment running failure, if you need this environment, please refer to https://github.com/PaddlePaddle/Serving/blob/v0.7.0/doc/Install_CN.md to configure environment".format(case_type, case[-3:]))
+    
+def unset_proxy(key):
+    os.unsetenv(key)
+
+def check_env():
+    if 'https_proxy' in os.environ or 'http_proxy' in os.environ:
+        unset_proxy("https_proxy") 
+        unset_proxy("http_proxy")     
+    run_test_cases(cpp_test_cases, "C++")
+    run_test_cases(pipeline_test_cases, "Pipeline")

python/paddle_serving_server/env_check/simple_web_service/config_cpu.yml

+#worker_num, 最大并发数。当build_dag_each_worker=True时, 框架会创建worker_num个进程，每个进程内构建grpcSever和DAG
+##当build_dag_each_worker=False时，框架会设置主线程grpc线程池的max_workers=worker_num
+worker_num: 1
+
+#http端口, rpc_port和http_port不允许同时为空。当rpc_port可用且http_port为空时，不自动生成http_port
+rpc_port: 9998
+http_port: 18082
+
+dag:
+    #op资源类型, True, 为线程模型；False，为进程模型
+    is_thread_op: False
+
+    #tracer
+    tracer:
+        interval_s: 10
+op:
+    uci:
+        #并发数，is_thread_op=True时，为线程并发；否则为进程并发
+        concurrency: 1
+
+        #当op配置没有server_endpoints时，从local_service_conf读取本地服务配置
+        local_service_conf:
+
+            #uci模型路径
+            model_config: uci_housing_model
+
+            #计算硬件类型: 空缺时由devices决定(CPU/GPU)，0=cpu, 1=gpu, 2=tensorRT, 3=arm cpu, 4=kunlun xpu
+            device_type: 0
+
+            #计算硬件ID，优先由device_type决定硬件类型。devices为""或空缺时为CPU预测；当为"0", "0,1,2"时为GPU预测，表示使用的GPU卡
+            devices: "" # "0,1"
+
+            #client类型，包括brpc, grpc和local_predictor.local_predictor不启动Serving服务，进程内预测
+            client_type: local_predictor
+
+            #Fetch结果列表，以client_config中fetch_var的alias_name为准
+            fetch_list: ["price"]
+
+            #precsion, 预测精度，降低预测精度可提升预测速度
+            #GPU 支持: "fp32"(default), "fp16", "int8"；
+            #CPU 支持: "fp32"(default), "fp16", "bf16"(mkldnn); 不支持: "int8"
+            precision: "fp32"
+
+            #ir_optim开关, 默认False
+            ir_optim: True 
+
+            #use_mkldnn开关, 默认False, use_mkldnn与ir_optim同时打开才有性能提升
+            use_mkldnn: True

python/paddle_serving_server/env_check/simple_web_service/config_gpu.yml

+#worker_num, 最大并发数。当build_dag_each_worker=True时, 框架会创建worker_num个进程，每个进程内构建grpcSever和DAG
+##当build_dag_each_worker=False时，框架会设置主线程grpc线程池的max_workers=worker_num
+worker_num: 1
+
+#http端口, rpc_port和http_port不允许同时为空。当rpc_port可用且http_port为空时，不自动生成http_port
+rpc_port: 9998
+http_port: 18082
+
+dag:
+    #op资源类型, True, 为线程模型；False，为进程模型
+    is_thread_op: False
+
+    #tracer
+    tracer:
+        interval_s: 10
+op:
+    uci:
+        #并发数，is_thread_op=True时，为线程并发；否则为进程并发
+        concurrency: 1
+
+        #当op配置没有server_endpoints时，从local_service_conf读取本地服务配置
+        local_service_conf:
+
+            #uci模型路径
+            model_config: uci_housing_model
+
+            #计算硬件类型: 空缺时由devices决定(CPU/GPU)，0=cpu, 1=gpu, 2=tensorRT, 3=arm cpu, 4=kunlun xpu
+            device_type: 1
+
+            #计算硬件ID，优先由device_type决定硬件类型。devices为""或空缺时为CPU预测；当为"0", "0,1,2"时为GPU预测，表示使用的GPU卡
+            devices: "0" # "0,1"
+
+            #client类型，包括brpc, grpc和local_predictor.local_predictor不启动Serving服务，进程内预测
+            client_type: local_predictor
+
+            #Fetch结果列表，以client_config中fetch_var的alias_name为准
+            fetch_list: ["price"]
+
+            #precsion, 预测精度，降低预测精度可提升预测速度
+            #GPU 支持: "fp32"(default), "fp16", "int8"；
+            #CPU 支持: "fp32"(default), "fp16", "bf16"(mkldnn); 不支持: "int8"
+            precision: "fp32"
+
+            #ir_optim开关, 默认False
+            ir_optim: True 
+
+            #use_mkldnn开关, 默认False, use_mkldnn与ir_optim同时打开才有性能提升
+            use_mkldnn: True

python/paddle_serving_server/env_check/simple_web_service/uci_housing_client/serving_client_conf.prototxt

+feed_var {
+  name: "x"
+  alias_name: "x"
+  is_lod_tensor: false
+  feed_type: 1
+  shape: 13
+}
+fetch_var {
+  name: "fc_0.tmp_1"
+  alias_name: "price"
+  is_lod_tensor: false
+  fetch_type: 1
+  shape: 1
+}

python/paddle_serving_server/env_check/simple_web_service/uci_housing_model/serving_server_conf.prototxt

+feed_var {
+  name: "x"
+  alias_name: "x"
+  is_lod_tensor: false
+  feed_type: 1
+  shape: 13
+}
+fetch_var {
+  name: "fc_0.tmp_1"
+  alias_name: "price"
+  is_lod_tensor: false
+  fetch_type: 1
+  shape: 1
+}

python/paddle_serving_server/env_check/simple_web_service/web_service.py

+# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from paddle_serving_server.web_service import WebService, Op
+import logging
+import numpy as np
+import sys
+import argparse
+
+_LOGGER = logging.getLogger()
+
+def serve_args():
+    parser = argparse.ArgumentParser("serve")
+    parser.add_argument(
+        "config",
+        type=str,
+        default="config.yml",
+        nargs="?",
+        help="cpu or gpu config.yml")
+    return parser.parse_args() 
+
+
+class UciOp(Op):
+    def init_op(self):
+        self.separator = ","
+        self.batch_separator = ";"
+
+    def preprocess(self, input_dicts, data_id, log_id):
+        (_, input_dict), = input_dicts.items()
+        _LOGGER.error("UciOp::preprocess >>> log_id:{}, input:{}".format(
+            log_id, input_dict))
+        x_value = input_dict["x"].split(self.batch_separator)
+        x_lst = []
+        for x_val in x_value:
+            x_lst.append(
+                np.array([
+                    float(x.strip()) for x in x_val.split(self.separator)
+                ]).reshape(1, 13))
+        input_dict["x"] = np.concatenate(x_lst, axis=0)
+        proc_dict = {}
+        return input_dict, False, None, ""
+
+    def postprocess(self, input_dicts, fetch_dict, data_id, log_id):
+        _LOGGER.info(
+            "UciOp::postprocess >>> data_id:{}, log_id:{}, fetch_dict:{}".
+            format(data_id, log_id, fetch_dict))
+        fetch_dict["price"] = str(fetch_dict["price"])
+        return fetch_dict, None, ""
+
+
+class UciService(WebService):
+    def get_pipeline_response(self, read_op):
+        uci_op = UciOp(name="uci", input_ops=[read_op])
+        return uci_op
+
+args = serve_args()
+uci_service = UciService(name="uci")
+uci_service.prepare_pipeline_config(args.config)
+uci_service.run_service()

python/paddle_serving_server/env_check/test_fit_a_line.py

+import os
+import subprocess
+import numpy as np
+import copy
+import cv2
+import re
+import sys
+
+from paddle_serving_client import Client
+from paddle_serving_client.httpclient import HttpClient
+from paddle_serving_client.io import inference_model_to_serving
+from paddle_serving_app.reader import SegPostprocess
+from paddle_serving_app.reader import *
+import paddle.inference as paddle_infer
+
+from util import *
+
+
+class TestFitALine(object):
+    def setup_class(self):
+        serving_util = ServingTest(data_path="fit_a_line", example_path="fit_a_line", model_dir="uci_housing_model",
+                                   client_dir="uci_housing_client")
+        serving_util.check_model_data_exist()
+        self.get_truth_val_by_inference(self)
+        self.serving_util = serving_util
+
+    def teardown_method(self):
+        print_log(["stderr.log", "stdout.log",
+                   "log/serving.ERROR", "PipelineServingLogs/pipeline.log"], iden="after predict")
+        kill_process(9494)
+        self.serving_util.release()
+
+    def get_truth_val_by_inference(self):
+        data = np.array(
+            [0.0137, -0.1136, 0.2553, -0.0692, 0.0582, -0.0727, -0.1583, -0.0584, 0.6283, 0.4919, 0.1856, 0.0795,
+             -0.0332]).astype("float32")[np.newaxis, :]
+        input_dict = {"x": data}
+
+        pd_config = paddle_infer.Config("uci_housing_model/")
+        pd_config.disable_gpu()
+        pd_config.switch_ir_optim(False)
+
+        predictor = paddle_infer.create_predictor(pd_config)
+
+        input_names = predictor.get_input_names()
+        for i, input_name in enumerate(input_names):
+            input_handle = predictor.get_input_handle(input_name)
+            input_handle.copy_from_cpu(input_dict[input_name])
+
+        predictor.run()
+
+        output_data_dict = {}
+        output_names = predictor.get_output_names()
+        for _, output_data_name in enumerate(output_names):
+            output_handle = predictor.get_output_handle(output_data_name)
+            output_data = output_handle.copy_to_cpu()
+            output_data_dict[output_data_name] = output_data
+        # 对齐Serving output
+        print(output_data_dict)
+        output_data_dict["price"] = output_data_dict["fc_0.tmp_1"]
+        del output_data_dict["fc_0.tmp_1"]
+        self.truth_val = output_data_dict
+        print(self.truth_val, self.truth_val["price"].shape)
+
+    def predict_brpc(self, batch_size=1):
+        data = np.array(
+            [0.0137, -0.1136, 0.2553, -0.0692, 0.0582, -0.0727, -0.1583, -0.0584, 0.6283, 0.4919, 0.1856, 0.0795,
+             -0.0332]).astype("float32")[np.newaxis, :]
+        client = Client()
+        client.load_client_config("uci_housing_client/serving_client_conf.prototxt")
+        client.connect(["127.0.0.1:9494"])
+        fetch_list = client.get_fetch_names()
+        fetch_map = client.predict(
+            feed={"x": data}, fetch=fetch_list, batch=True)
+        print(fetch_map)
+        return fetch_map
+    
+    def predict_http(self, batch_size=1):
+        data = np.array(
+            [0.0137, -0.1136, 0.2553, -0.0692, 0.0582, -0.0727, -0.1583, -0.0584, 0.6283, 0.4919, 0.1856, 0.0795,
+             -0.0332]).astype("float32")[np.newaxis, :]
+        client = HttpClient()
+        client.load_client_config("uci_housing_client/serving_client_conf.prototxt")
+        client.connect(["127.0.0.1:9494"])
+        fetch_list = client.get_fetch_names()
+        fetch_map = client.predict(
+            feed={"x": data}, fetch=fetch_list, batch=True)
+        print(fetch_map)
+        return fetch_map
+
+    def test_cpu(self):
+        # 1.start server
+        self.serving_util.start_server_by_shell(
+            cmd=f"{self.serving_util.py_version} -m paddle_serving_server.serve --model uci_housing_model --thread 10 --port 9494",
+            sleep=5,
+        )
+
+        # 2.resource check
+        assert count_process_num_on_port(9494) == 1
+        # assert check_gpu_memory(0) is False
+
+        # 3.keywords check
+
+        # 4.predict by brpc
+        # batch_size 1
+        result_data = self.predict_brpc()
+        self.serving_util.check_result(result_data=result_data, truth_data=self.truth_val, batch_size=1)
+        result_data = self.predict_http()
+        self.serving_util.check_result(result_data=result_data, truth_data=self.truth_val, batch_size=1)
+
+        # 5.release
+        kill_process(9494)
+
+    def test_gpu(self):
+        # 1.start server
+        self.serving_util.start_server_by_shell(
+            cmd=f"{self.serving_util.py_version} -m paddle_serving_server.serve --model uci_housing_model --thread 10 --port 9494 --gpu_ids 0",
+            sleep=5,
+        )
+
+        # 2.resource check
+        assert count_process_num_on_port(9494) == 1
+        # assert check_gpu_memory(0) is False
+
+        # 3.keywords check
+
+        # 4.predict by brpc 
+        # batch_size 1
+        result_data = self.predict_brpc()
+        self.serving_util.check_result(result_data=result_data, truth_data=self.truth_val, batch_size=1)
+        result_data = self.predict_http()
+        self.serving_util.check_result(result_data=result_data, truth_data=self.truth_val, batch_size=1)
+
+        # 5.release
+        kill_process(9494)
+
+if __name__ == '__main__':
+    sss = TestCPPClient()
+    sss.get_truth_val_by_inference()
+
+

python/paddle_serving_server/env_check/test_uci_pipeline.py

+import os
+import subprocess
+import numpy as np
+import copy
+import cv2
+import requests
+import json
+import sys
+
+from paddle_serving_server.pipeline import PipelineClient
+from paddle_serving_app.reader import CenterCrop, RGB2BGR, Transpose, Div, Normalize, RCNNPostprocess
+from paddle_serving_app.reader import Sequential, File2Image, Resize, Transpose, BGR2RGB, SegPostprocess
+import paddle.inference as paddle_infer
+
+from util import *
+
+
+class TestUCIPipeline(object):
+    def setup_class(self):
+        serving_util = ServingTest(data_path="fit_a_line", example_path="simple_web_service", model_dir="uci_housing_model",
+                                   client_dir="uci_housing_client")
+        serving_util.check_model_data_exist()
+        self.get_truth_val_by_inference(self)
+        self.serving_util = serving_util
+
+    def teardown_method(self):
+        print_log(["stderr.log", "stdout.log",
+                   "log/serving.ERROR", "PipelineServingLogs/pipeline.log"], iden="after predict")
+        kill_process(9998)
+        self.serving_util.release()
+
+    def get_truth_val_by_inference(self):
+        data = np.array(
+            [0.0137, -0.1136, 0.2553, -0.0692, 0.0582, -0.0727, -0.1583, -0.0584, 0.6283, 0.4919, 0.1856, 0.0795,
+             -0.0332]).astype("float32")[np.newaxis, :]
+        input_dict = {"x": data}
+
+        pd_config = paddle_infer.Config("uci_housing_model/")
+        pd_config.disable_gpu()
+        pd_config.switch_ir_optim(False)
+
+        predictor = paddle_infer.create_predictor(pd_config)
+
+        input_names = predictor.get_input_names()
+        for i, input_name in enumerate(input_names):
+            input_handle = predictor.get_input_handle(input_name)
+            input_handle.copy_from_cpu(input_dict[input_name])
+
+        predictor.run()
+
+        output_data_dict = {}
+        output_names = predictor.get_output_names()
+        for _, output_data_name in enumerate(output_names):
+            output_handle = predictor.get_output_handle(output_data_name)
+            output_data = output_handle.copy_to_cpu()
+            output_data_dict[output_data_name] = output_data
+        # 对齐Serving output
+        output_data_dict["prob"] = output_data_dict["fc_0.tmp_1"]
+        del output_data_dict["fc_0.tmp_1"]
+        self.truth_val = output_data_dict
+        print(self.truth_val, self.truth_val["prob"].shape)
+
+    def predict_pipeline_rpc(self, batch_size=1):
+        # 1.prepare feed_data
+        feed_dict = {'x': '0.0137, -0.1136, 0.2553, -0.0692, 0.0582, -0.0727, -0.1583, -0.0584, 0.6283, 0.4919, 0.1856, 0.0795, -0.0332'}
+        # TODO 原示例不支持batch
+
+        # 2.init client
+        # fetch = ["label", "prob"]
+        client = PipelineClient()
+        client.connect(['127.0.0.1:9998'])
+
+        # 3.predict for fetch_map
+        ret = client.predict(feed_dict=feed_dict)
+        print(ret)
+        # 转换为dict
+        result = {"prob": np.array(eval(ret.value[0]))}
+        print(result)
+        return result
+
+    def predict_pipeline_http(self, batch_size=1):
+        # 1.prepare feed_data
+        data = '0.0137, -0.1136, 0.2553, -0.0692, 0.0582, -0.0727, -0.1583, -0.0584, 0.6283, 0.4919, 0.1856, 0.0795, ' \
+               '-0.0332'
+        feed_dict = {"key": [], "value": []}
+        # TODO 原示例不支持batch
+        feed_dict["key"].append("x")
+        feed_dict["value"].append(data)
+
+        # 2.predict for fetch_map
+        url = "http://127.0.0.1:18082/uci/prediction"
+        r = requests.post(url=url, data=json.dumps(feed_dict))
+        print(r.json())
+        # 转换为dict of numpy array
+        result = {"prob": np.array(eval(r.json()["value"][0]))}
+        return result
+
+    def test_cpu(self):
+        # 1.start server
+        self.serving_util.start_server_by_shell(
+            cmd=f"{self.serving_util.py_version} web_service.py config_cpu.yml",
+            sleep=5,
+        )
+
+        # 2.resource check
+        assert count_process_num_on_port(9998) == 1  # gRPC Server
+        assert count_process_num_on_port(18082) == 1  # gRPC gateway 代理、转发
+        #assert check_gpu_memory(0) is False
+
+        # 3.keywords check
+        check_keywords_in_server_log("MKLDNN is enabled", filename="stderr.log")
+
+        # 4.predict by rpc
+        # batch_size=1
+        result = self.predict_pipeline_rpc(batch_size=1)
+        self.serving_util.check_result(result_data=result, truth_data=self.truth_val, batch_size=1)
+        # # predict by http
+        result = self.predict_pipeline_http(batch_size=1)  # batch_size=1
+        self.serving_util.check_result(result_data=result, truth_data=self.truth_val, batch_size=1)
+
+        # 5.release
+        kill_process(9998)
+        kill_process(18082)
+
+
+    def test_gpu(self):
+        # 1.start server
+        self.serving_util.start_server_by_shell(
+            cmd=f"{self.serving_util.py_version} web_service.py config_gpu.yml",
+            sleep=5,
+        )
+
+        # 2.resource check
+        assert count_process_num_on_port(9998) == 1  # gRPC Server
+        assert count_process_num_on_port(18082) == 1  # gRPC gateway 代理、转发
+        #assert check_gpu_memory(0) is False
+
+        # 4.predict by rpc
+        # batch_size=1
+        result = self.predict_pipeline_rpc(batch_size=1)
+        self.serving_util.check_result(result_data=result, truth_data=self.truth_val, batch_size=1)
+        # # predict by http
+        result = self.predict_pipeline_http(batch_size=1)  # batch_size=1
+        self.serving_util.check_result(result_data=result, truth_data=self.truth_val, batch_size=1)
+
+        # 5.release
+        kill_process(9998)
+        kill_process(18082)

python/paddle_serving_server/env_check/util.py

+import os
+import pynvml
+import argparse
+import base64
+import subprocess
+import numpy as np
+
+
+class ServingTest(object):
+    def __init__(self, data_path: str, example_path: str, model_dir: str, client_dir: str):
+        """
+        需设置环境变量
+        CODE_PATH: repo上一级目录
+        DATA_PATH: 数据集根目录
+        py_version: python版本 python3.6~3.8
+        """
+        code_path = os.path.dirname(os.path.realpath(__file__))
+        self.data_path = f"{code_path}/{data_path}/"
+        self.example_path = f"{code_path}/{example_path}/"
+        self.py_version = os.environ.get("PYTHON_EXECUTABLE")
+        self.model_dir = model_dir
+        self.client_config = f"{client_dir}/serving_client_conf.prototxt"
+
+        os.chdir(self.example_path)
+        print("======================cur path======================")
+        print(os.getcwd())
+        self.check_model_data_exist()
+
+    def check_model_data_exist(self):
+        if not os.path.exists(f"./{self.model_dir}"):
+            # 软链模型数据
+            dir_path, dir_names, file_names = next(os.walk(self.data_path))
+            for dir_ in dir_names:
+                abs_path = os.path.join(dir_path, dir_)
+                os.system(f"ln -s {abs_path} {dir_}")
+            for file in file_names:
+                abs_path = os.path.join(dir_path, file)
+                os.system(f"ln -s {abs_path} {file}")
+
+    def start_server_by_shell(self, cmd: str, sleep: int = 5, err="stderr.log", out="stdout.log", wait=False):
+        self.err = open(err, "w")
+        self.out = open(out, "w")
+        p = subprocess.Popen(cmd, shell=True, stdout=self.out, stderr=self.err)
+        os.system(f"sleep {sleep}")
+        if wait:
+            p.wait()
+
+        print_log([err, out])
+
+    @staticmethod
+    def check_result(result_data: dict, truth_data: dict, batch_size=1, delta=1e-3):
+        # flatten
+        predict_result = {}
+        truth_result = {}
+        for key, value in result_data.items():
+            predict_result[key] = value.flatten()
+        for key, value in truth_data.items():
+            truth_result[key] = np.repeat(value, repeats=batch_size, axis=0).flatten()
+        # print("预测值:", predict_result)
+        # print("真实值:", truth_result)
+
+        # compare
+        for key in predict_result.keys():
+            diff_array = diff_compare(predict_result[key], truth_result[key])
+            diff_count = np.sum(diff_array > delta)
+            assert diff_count == 0, f"total: {np.size(diff_array)} diff count:{diff_count} max:{np.max(diff_array)}"
+
+        # for key in predict_result.keys():
+        #     for i, data in enumerate(predict_result[key]):
+        #         diff = sig_fig_compare(data, truth_result[key][i])
+        #         assert diff < delta, f"data:{data} truth:{truth_result[key][i]} diff is {diff} > {delta}, index:{i}"
+
+    @staticmethod
+    def parse_http_result(output):
+        # 转换http client返回的proto格式数据，统一为dict包numpy array
+        # todo 仅支持float_data
+        result_dict = {}
+        if isinstance(output, dict):
+            for tensor in output["outputs"][0]["tensor"]:
+                result_dict[tensor["alias_name"]] = np.array(tensor["float_data"]).reshape(tensor["shape"])
+        else:
+            for tensor in output.outputs[0].tensor:
+                result_dict[tensor.alias_name] = np.array(tensor.float_data).reshape(tensor.shape)
+        return result_dict
+
+    @staticmethod
+    def release(keywords="web_service.py"):
+        #os.system("kill -9 $(ps -ef | grep serving | awk '{print $2}') > /dev/null 2>&1")
+        os.system("kill -9 $(ps -ef | grep " + keywords + " | awk '{print $2}') > /dev/null 2>&1")
+
+
+def kill_process(port, sleep_time=0):
+    command = "kill -9 $(netstat -nlp | grep :" + str(port) + " | awk '{print $7}' | awk -F'/' '{{ print $1 }}') > /dev/null 2>&1"
+    os.system(command)
+    # 解决端口占用
+    os.system(f"sleep {sleep_time}")
+
+
+def check_gpu_memory(gpu_id):
+    pynvml.nvmlInit()
+    handle = pynvml.nvmlDeviceGetHandleByIndex(gpu_id)
+    mem_info = pynvml.nvmlDeviceGetMemoryInfo(handle)
+    mem_used = mem_info.used / 1024 ** 2
+    print(f"GPU-{gpu_id} memory used:", mem_used)
+    return mem_used > 100
+
+
+def count_process_num_on_port(port):
+    command = "netstat -nlp | grep :" + str(port) + " | wc -l"
+    count = eval(os.popen(command).read())
+    print(f"port-{port} processes num:", count)
+    return count
+
+
+def check_keywords_in_server_log(words: str, filename="stderr.log"):
+    p = subprocess.Popen(f"grep '{words}' {filename} > grep.log && head grep.log", shell=True)
+    p.wait()
+    assert p.returncode == 0, "keywords not found"
+
+
+def cv2_to_base64(image):
+    return base64.b64encode(image).decode('utf8')
+
+
+def sig_fig_compare(num0, num1, delta=5):
+    difference = num0 - num1
+    num0_int_length = len(str(int(num0)))
+    num1_int_length = len(str(int(num1)))
+    num0_int = int(num0)
+    num1_int = int(num1)
+    if num0 < 1 and num1 < 1 and difference < 1:
+        return difference
+    elif num0_int_length == num1_int_length:
+        if num0_int_length >= 5:
+            return abs(num0_int - num1_int)
+        else:
+            scale = 5 - num1_int_length
+            num0_padding = num0 * scale
+            num1_padding = num1 * scale
+            return abs(num0_padding - num1_padding) / (10 * scale)
+    elif num0_int_length != num1_int_length:
+        return difference
+
+
+def diff_compare(array1, array2):
+    diff = np.abs(array1 - array2)
+    return diff
+
+
+def print_log(file_list, iden=""):
+    for file in file_list:
+        print(f"======================{file} {iden}=====================")
+        if os.path.exists(file):
+            with open(file, "r") as f:
+                print(f.read())
+            if file.startswith("log") or file.startswith("PipelineServingLogs"):
+                os.remove(file)
+        else:
+            print(f"{file} not exist")
+        print("======================================================")
+
+
+def parse_prototxt(file):
+    with open(file, "r") as f:
+        lines = [i.strip().split(":") for i in f.readlines()]
+
+    engines = {}
+    for i in lines:
+        if len(i) > 1:
+            if i[0] in engines:
+                engines[i[0]].append(i[1].strip())
+            else:
+                engines[i[0]] = [i[1].strip()]
+    return engines
+
+
+def default_args():
+    parser = argparse.ArgumentParser()
+    args = parser.parse_args([])
+    args.thread = 2
+    args.port = 9292
+    args.device = "cpu"
+    args.gpu_ids = [""]
+    args.op_num = 0
+    args.op_max_batch = 32
+    args.model = [""]
+    args.workdir = "workdir"
+    args.use_mkl = False
+    args.precision = "fp32"
+    args.use_calib = False
+    args.mem_optim_off = False
+    args.ir_optim = False
+    args.max_body_size = 512 * 1024 * 1024
+    args.use_encryption_model = False
+    args.use_multilang = False
+    args.use_trt = False
+    args.use_lite = False
+    args.use_xpu = False
+    args.product_name = None
+    args.container_id = None
+    args.gpu_multi_stream = False
+    return args

python/paddle_serving_server/serve.py

@@ -34,6 +34,7 @@ import socket
 from paddle_serving_server.env import CONF_HOME
 import signal
 from paddle_serving_server.util import *
+from paddle_serving_server.env_check.run import *
 
 
 # web_service.py is still used by Pipeline.
@@ -114,7 +115,7 @@ def serve_args():
         type=str,
         default="start",
         nargs="?",
-        help="stop or start PaddleServing")
+        help="stop or start PaddleServing, check running environemnt")
     parser.add_argument(
         "--thread",
         type=int,
@@ -450,7 +451,9 @@ if __name__ == "__main__":
             os._exit(0)
         else:
             os._exit(-1)
-
+    elif args.server == "check":
+         check_env() 
+         os._exit(0)
     for single_model_config in args.model:
         if os.path.isdir(single_model_config):
             pass

python/paddle_serving_server/web_service.py

@@ -261,7 +261,7 @@ class WebService(object):
         self.gpu_multi_stream = gpu_multi_stream
         self.runtime_thread_num = runtime_thread_num
         self.batch_infer_size = batch_infer_size
-
+            
         # record port and pid info for stopping process
         dump_pid_file([self.port], "web_service")
         # if gpuid != None, we will use gpuid first.

python/pipeline/channel.py

@@ -29,36 +29,11 @@ import enum
 import os
 import copy
 import time
+from .error_catch import ErrorCatch, CustomException, ProductErrCode
+from .error_catch import CustomExceptionCode as ChannelDataErrcode
 
 _LOGGER = logging.getLogger(__name__)
 
-
-class ChannelDataErrcode(enum.Enum):
-    """
-    ChannelData error code
-    """
-    OK = 0
-    TIMEOUT = 1
-    NOT_IMPLEMENTED = 2
-    TYPE_ERROR = 3
-    RPC_PACKAGE_ERROR = 4
-    CLIENT_ERROR = 5
-    CLOSED_ERROR = 6
-    NO_SERVICE = 7
-    UNKNOW = 8
-    INPUT_PARAMS_ERROR = 9
-
-    PRODUCT_ERROR = 100
-
-
-class ProductErrCode(enum.Enum):
-    """
-    ProductErrCode is a base class for recording business error code. 
-    product developers inherit this class and extend more error codes. 
-    """
-    pass
-
-
 class ChannelDataType(enum.Enum):
     """
     Channel data type

python/pipeline/dag.py

@@ -26,11 +26,12 @@ import os
 import logging
 import collections
 import json
-
+from .error_catch import ErrorCatch, CustomException, CustomExceptionCode, ParamChecker, ParamVerify
 from .operator import Op, RequestOp, ResponseOp, VirtualOp
 from .channel import (ThreadChannel, ProcessChannel, ChannelData,
-                      ChannelDataErrcode, ChannelDataType, ChannelStopError,
-                      ProductErrCode)
+                      ChannelDataType, ChannelStopError)
+from .error_catch import  ProductErrCode
+from .error_catch import CustomExceptionCode as ChannelDataErrcode
 from .profiler import TimeProfiler, PerformanceTracer
 from .util import NameGenerator, ThreadIdGenerator, PipelineProcSyncManager
 from .proto import pipeline_service_pb2
@@ -42,7 +43,6 @@ class DAGExecutor(object):
     """
     DAG Executor, the service entrance of DAG.
     """
-
     def __init__(self, response_op, server_conf, worker_idx):
         """
         Initialize DAGExecutor.
@@ -114,6 +114,7 @@ class DAGExecutor(object):
         self._client_profile_key = "pipeline.profile"
         self._client_profile_value = "1"
 
+    @ErrorCatch
     def start(self):
         """
         Starting one thread for receiving data from the last channel background.
@@ -479,20 +480,36 @@ class DAG(object):
     """
     Directed Acyclic Graph(DAG) engine, builds one DAG topology.
     """
-
     def __init__(self, request_name, response_op, use_profile, is_thread_op,
                  channel_size, build_dag_each_worker, tracer,
                  channel_recv_frist_arrive):
-        self._request_name = request_name
-        self._response_op = response_op
-        self._use_profile = use_profile
-        self._is_thread_op = is_thread_op
-        self._channel_size = channel_size
-        self._build_dag_each_worker = build_dag_each_worker
-        self._tracer = tracer
-        self._channel_recv_frist_arrive = channel_recv_frist_arrive
-        if not self._is_thread_op:
-            self._manager = PipelineProcSyncManager()
+        _LOGGER.info("{}, {}, {}, {}, {} ,{} ,{} ,{}".format(request_name, response_op, use_profile, is_thread_op,
+                         channel_size, build_dag_each_worker, tracer,
+                                          channel_recv_frist_arrive))
+        @ErrorCatch
+        @ParamChecker
+        def init_helper(self, request_name: str,
+                         response_op, 
+                         use_profile: [bool, None], 
+                         is_thread_op: bool,
+                         channel_size, 
+                         build_dag_each_worker: [bool, None],
+                         tracer,
+                        channel_recv_frist_arrive):
+            self._request_name = request_name
+            self._response_op = response_op
+            self._use_profile = use_profile
+            self._is_thread_op = is_thread_op
+            self._channel_size = channel_size
+            self._build_dag_each_worker = build_dag_each_worker
+            self._tracer = tracer
+            self._channel_recv_frist_arrive = channel_recv_frist_arrive
+            if not self._is_thread_op:
+                self._manager = PipelineProcSyncManager()
+        init_helper(self, request_name, response_op, use_profile, is_thread_op,
+                    channel_size, build_dag_each_worker, tracer,
+                    channel_recv_frist_arrive)
+        print("[DAG] Succ init")
         _LOGGER.info("[DAG] Succ init")
 
     @staticmethod

python/pipeline/error_catch.py

+import sys 
+import enum 
+import os 
+import logging 
+import traceback
+#from paddle_serving_server.pipeline import ResponseOp
+import threading
+import inspect
+import traceback
+import functools
+import re
+from .proto import pipeline_service_pb2_grpc, pipeline_service_pb2
+from .util import ThreadIdGenerator
+from paddle_serving_server.util import kill_stop_process_by_pid
+
+_LOGGER = logging.getLogger(__name__) 
+
+class CustomExceptionCode(enum.Enum): 
+    """
+    Add new Exception
+    
+    0           Success
+    50 ~ 99     Product error
+    3000 ~ 3999 Internal service error
+    4000 ~ 4999 Conf error 
+    5000 ~ 5999 User input error
+    6000 ~ 6999 Timeout error
+    7000 ~ 7999 Type Check error
+    8000 ~ 8999 Internal communication error
+    9000 ~ 9999 Inference error
+    10000       Other error
+    """
+    OK = 0
+    PRODUCT_ERROR = 50
+
+    NOT_IMPLEMENTED = 3000
+    CLOSED_ERROR = 3001
+    NO_SERVICE = 3002
+    INIT_ERROR = 3003
+    CONF_ERROR = 4000
+    INPUT_PARAMS_ERROR = 5000
+    TIMEOUT = 6000
+    TYPE_ERROR = 7000
+    RPC_PACKAGE_ERROR = 8000 
+    CLIENT_ERROR = 9000
+    UNKNOW = 10000
+
+
+class ProductErrCode(enum.Enum):
+    """
+    ProductErrCode is to record business error codes.
+    the ProductErrCode  number ranges from 51 to 99
+    product developers can directly add error code into this class. 
+    """
+    pass
+
+
+class CustomException(Exception):
+    """
+    An self-defined exception class
+    
+    Usage : raise CustomException(CustomExceptionCode.exceptionCode, errorMsg, isSendToUser=False)
+    Args  :  
+           exceptionCode : CustomExceptionCode or ProductErrCode
+           errorMsg : string message you want to describe the error
+           isSendToUser : whether send to user or just record in errorlog
+    Return : An string of error_info 
+    """
+    def __init__(self, exceptionCode, errorMsg, isSendToUser=False):
+        super().__init__(self)
+        self.error_info = "\n\texception_code: {}\n"\
+                          "\texception_type: {}\n"\
+                          "\terror_msg: {}\n"\
+                          "\tis_send_to_user: {}".format(exceptionCode.value,
+                          CustomExceptionCode(exceptionCode).name, errorMsg, isSendToUser)
+    
+    def __str__(self):
+        return self.error_info
+
+
+
+class ErrorCatch():
+    """
+    An decorator class to catch error for method or function.
+
+    Usage : @ErrorCatch
+    Args  : None
+    Returns: tuple(res, response)
+             res is the original funciton return 
+             response includes erro_no and erro_msg
+    """
+    def __call__(self, func):
+        if inspect.isfunction(func) or inspect.ismethod(func):
+            @functools.wraps(func)
+            def wrapper(*args, **kw):
+                try:
+                    res = func(*args, **kw)
+                except CustomException as e:
+                    if "log_id" in kw.keys():
+                        log_id = kw["log_id"]
+                    elif "logid_dict" in kw.keys() and "data_id" in kw.keys():
+                        log_id = kw["logid_dict"].get(kw["data_id"])
+                    else:
+                        log_id = 0
+                    resp = pipeline_service_pb2.Response()
+                    _LOGGER.error("\nLog_id: {}\n{}Classname: {}\nFunctionName: {}\nArgs: {}".format(log_id, traceback.format_exc(), func.__qualname__, func.__name__, args))
+                    split_list = re.split("\n|\t|:", str(e))
+                    resp.err_no = int(split_list[3])
+                    resp.err_msg = "Log_id: {}  Raise_msg: {}  ClassName: {}  FunctionName: {}".format(log_id, split_list[9], func.__qualname__ ,func.__name__ )
+                    is_send_to_user = split_list[-1].replace(" ", "")
+                    if is_send_to_user == "True":
+                         return (None, resp)
+                    else:
+                        print("Erro_Num: {} {}".format(resp.err_no, resp.err_msg))
+                        print("Init error occurs. For detailed information. Please look up pipeline.log.wf in PipelineServingLogs by log_id.")
+                        kill_stop_process_by_pid("kill", os.getpgid(os.getpid()))
+                except Exception as e:
+                    if "log_id" in kw.keys():
+                        log_id = kw["log_id"]
+                    elif "logid_dict" in kw.keys() and "data_id" in kw.keys():
+                        log_id = kw["logid_dict"].get(kw["data_id"])
+                    else:
+                        log_id = 0
+                    resp = pipeline_service_pb2.Response()
+                    _LOGGER.error("\nLog_id: {}\n{}Classname: {}\nFunctionName: {}".format(log_id, traceback.format_exc(), func.__qualname__, func.__name__))
+                    resp.err_no = CustomExceptionCode.UNKNOW.value
+                    resp.err_msg = "Log_id: {}  Raise_msg: {}  ClassName: {}  FunctionName: {}".format(log_id, str(e).replace("\'", ""), func.__qualname__ ,func.__name__ )
+                    return (None, resp)
+                else:
+                    resp = pipeline_service_pb2.Response()
+                    resp.err_no = CustomExceptionCode.OK.value
+                    resp.err_msg = ""
+                    return (res, resp)
+
+            return wrapper
+
+def ParamChecker(function):
+    @functools.wraps(function)
+    def wrapper(*args, **kwargs):
+        # fetch the argument name list.
+        parameters = inspect.signature(function).parameters
+        argument_list = list(parameters.keys())
+
+        # fetch the argument checker list.
+        checker_list = [parameters[argument].annotation for argument in argument_list]
+
+        # fetch the value list.
+        value_list =  [inspect.getcallargs(function, *args, **kwargs)[argument] for argument in inspect.getfullargspec(function).args]
+
+        # initialize the result dictionary, where key is argument, value is the checker result.
+        result_dictionary = dict()
+        for argument, value, checker in zip(argument_list, value_list, checker_list):
+            result_dictionary[argument] = check(argument, value, checker, function)
+
+        # fetch the invalid argument list.
+        invalid_argument_list = [key for key in argument_list if not result_dictionary[key]]
+
+        # if there are invalid arguments, raise the error.
+        if len(invalid_argument_list) > 0:
+            raise CustomException(CustomExceptionCode.INPUT_PARAMS_ERROR, "invalid arg list: {}".format(invalid_argument_list), True)
+
+        # check the result.
+        result = function(*args, **kwargs)
+        checker = inspect.signature(function).return_annotation
+        if not check('return', result, checker, function):
+            raise CustomException(CustomExceptionCode.INPUT_PARAMS_ERROR, "invalid return type", True)
+
+        # return the result.
+        return result
+    return wrapper
+
+
+def check(name, value, checker, function):
+    if isinstance(checker, (tuple, list, set)):
+        return True in [check(name, value, sub_checker, function) for sub_checker in checker]
+    elif checker is inspect._empty:
+        return True
+    elif checker is None:
+        return value is None
+    elif isinstance(checker, type):
+        return isinstance(value, checker)
+    elif callable(checker):
+        result = checker(value)
+        return result
+
+class ParamVerify(object):
+    @staticmethod
+    def int_check(c, lower_bound=None, upper_bound=None):
+        if not isinstance(c, int):
+            return False
+        if isinstance(lower_bound, int) and isinstance(upper_bound, int):
+            return c >= lower_bound and c <= upper_bound
+        return True
+
+    @staticmethod
+    def file_check(f):
+        if not isinstance(f, str):
+            return False
+        if os.path.exist(f):
+            return True
+        else:
+
+            return False
+
+    @staticmethod
+    def check_feed_dict(feed_dict, right_feed_list):
+        if not isinstance(feed_dict, dict):
+            return False
+        filter_feed_list = list(filter(lambda x: "lod" not in x, feed_dict.keys()))
+        # right_feed_list reads from model config. the keys of feed_dict should same to it.
+        if len(filter_feed_list) != len(right_feed_list):
+            return False
+        for key in right_feed_list:
+           if key not in filter_feed_list:
+               return False
+        return True 
+
+
+    @staticmethod
+    def check_fetch_list(fetch_list, right_fetch_list):
+        if len(fetch_list) == 0:
+            return True
+        if not isinstance(fetch_list, list):
+            return False
+        # right_fetch_list reads from model config, fetch_list should part of it.
+        for key in fetch_list:
+           if key not in right_fetch_list:
+               return False
+        return True 
+
+ErrorCatch = ErrorCatch()

python/pipeline/local_service_handler.py

@@ -15,6 +15,7 @@
 import os
 import logging
 import multiprocessing
+from .error_catch import ErrorCatch, CustomException, CustomExceptionCode
 #from paddle_serving_server import OpMaker, OpSeqMaker
 #from paddle_serving_server import Server as GpuServer
 #from paddle_serving_server import Server as CpuServer

python/pipeline/operator.py

@@ -34,10 +34,14 @@ elif sys.version_info.major == 3:
 else:
     raise Exception("Error Python version")
 
+from .error_catch import ErrorCatch, CustomException, CustomExceptionCode, ParamChecker, ParamVerify
+check_feed_dict=ParamVerify.check_feed_dict
+check_fetch_list=ParamVerify.check_fetch_list
 from .proto import pipeline_service_pb2
-from .channel import (ThreadChannel, ProcessChannel, ChannelDataErrcode,
-                      ChannelData, ChannelDataType, ChannelStopError,
-                      ChannelTimeoutError, ProductErrCode)
+from .channel import (ThreadChannel, ProcessChannel,ChannelData, 
+                      ChannelDataType, ChannelStopError, ChannelTimeoutError)
+from .error_catch import  ProductErrCode
+from .error_catch import CustomExceptionCode as ChannelDataErrcode
 from .util import NameGenerator
 from .profiler import UnsafeTimeProfiler as TimeProfiler
 from . import local_service_handler
@@ -113,6 +117,19 @@ class Op(object):
         self._succ_init_op = False
         self._succ_close_op = False
 
+    # for feed/fetch dict cehck
+    @staticmethod
+    def get_feed_fetch_list(client):
+        from paddle_serving_app.local_predict import LocalPredictor
+        if isinstance(client, Client):
+            feed_names = client.get_feed_names()
+            fetch_names = client.get_fetch_names()
+        if isinstance(client, LocalPredictor):
+            feed_names = client.feed_names_
+            fetch_names = client.fetch_names_
+        return feed_names, fetch_names
+              
+
     def init_from_dict(self, conf):
         """
         Initializing one Op from config.yaml. If server_endpoints exist,
@@ -133,7 +150,6 @@ class Op(object):
             self._fetch_names = conf.get("fetch_list")
         if self._client_config is None:
             self._client_config = conf.get("client_config")
-
         if self._timeout is None:
             self._timeout = conf["timeout"]
         if self._timeout > 0:
@@ -353,12 +369,14 @@ class Op(object):
         if self.client_type == 'brpc':
             client = Client()
             client.load_client_config(client_config)
+            self.right_feed_names, self.right_fetch_names = self.get_feed_fetch_list(client) 
         elif self.client_type == 'pipeline_grpc':
             client = PPClient()
         elif self.client_type == 'local_predictor':
             if self.local_predictor is None:
                 raise ValueError("local predictor not yet created")
             client = self.local_predictor
+            self.right_feed_names, self.right_fetch_names = self.get_feed_fetch_list(client)
         else:
             raise ValueError("Failed to init client: unknow client "
                              "type {}".format(self.client_type))
@@ -367,6 +385,7 @@ class Op(object):
             _LOGGER.info("Op({}) has no fetch name set. So fetch all vars")
         if self.client_type != "local_predictor":
             client.connect(server_endpoints)
+        _LOGGER.info("init_client, feed_list:{}, fetch_list: {}".format(self.right_feed_names, self.right_fetch_names))
         return client
 
     def get_input_ops(self):
@@ -543,7 +562,7 @@ class Op(object):
 
         (_, input_dict), = input_dicts.items()
         return input_dict, False, None, ""
-
+    
     def process(self, feed_batch, typical_logid=0):
         """
         In process stage, send requests to the inference server or predict locally.
@@ -560,7 +579,19 @@ class Op(object):
         call_result = None
         err_code = ChannelDataErrcode.OK.value
         err_info = ""
-
+        @ErrorCatch 
+        @ParamChecker
+        def feed_fetch_list_check_helper(feed_batch : lambda feed_batch: check_feed_dict(feed_batch[0], self.right_feed_names),
+                                         fetch_list : lambda fetch_list: check_fetch_list(fetch_list, self.right_fetch_names),
+                                         log_id):
+            return None
+        _, resp = feed_fetch_list_check_helper(feed_batch, self._fetch_names, log_id=typical_logid)
+        if resp.err_no != CustomExceptionCode.OK.value:
+            err_code = resp.err_no
+            err_info = resp.err_msg
+            call_result = None
+            return call_result, err_code, err_info
+                
         if self.client_type == "local_predictor":
             err, err_info = ChannelData.check_batch_npdata(feed_batch)
             if err != 0:
@@ -801,46 +832,40 @@ class Op(object):
         preped_data_dict = collections.OrderedDict()
         err_channeldata_dict = collections.OrderedDict()
         skip_process_dict = {}
+        @ErrorCatch
+        def preprocess_help(self, parsed_data, data_id, logid_dict):
+            preped_data, is_skip_process, prod_errcode, prod_errinfo = self.preprocess(
+                parsed_data, data_id, logid_dict.get(data_id))
+            return preped_data, is_skip_process, prod_errcode, prod_errinfo
+            
         for data_id, parsed_data in parsed_data_dict.items():
             preped_data, error_channeldata = None, None
             is_skip_process = False
             prod_errcode, prod_errinfo = None, None
             log_id = logid_dict.get(data_id)
-            try:
-                preped_data, is_skip_process, prod_errcode, prod_errinfo = self.preprocess(
-                    parsed_data, data_id, logid_dict.get(data_id))
-                # Set skip_process_dict
+            process_res, resp = preprocess_help(self, parsed_data, data_id = data_id,
+            logid_dict = logid_dict)
+            if resp.err_no == CustomExceptionCode.OK.value:
+                preped_data, is_skip_process, prod_errcode, prod_errinfo = process_res
                 if is_skip_process is True:
                     skip_process_dict[data_id] = True
-            except TypeError as e:
-                # Error type in channeldata.datatype
-                error_info = "(data_id={} log_id={}) {} Failed to preprocess: {}".format(
-                    data_id, log_id, op_info_prefix, e)
-                _LOGGER.error(error_info, exc_info=True)
-                error_channeldata = ChannelData(
-                    error_code=ChannelDataErrcode.TYPE_ERROR.value,
-                    error_info=error_info,
-                    data_id=data_id,
-                    log_id=log_id)
-            except Exception as e:
-                error_info = "(data_id={} log_id={}) {} Failed to preprocess: {}".format(
-                    data_id, log_id, op_info_prefix, e)
-                _LOGGER.error(error_info, exc_info=True)
-                error_channeldata = ChannelData(
-                    error_code=ChannelDataErrcode.UNKNOW.value,
-                    error_info=error_info,
-                    data_id=data_id,
-                    log_id=log_id)
-
-            if prod_errcode is not None:
-                # product errors occured
+                if prod_errcode is not None:
+                    _LOGGER.error("data_id: {} return product error. Product ErrNo:{}, Product ErrMsg: {}".format(data_id, prod_errcode, prod_errinfo))
+                    error_channeldata = ChannelData(
+                      error_code=ChannelDataErrcode.PRODUCT_ERROR.value,
+                      error_info="",
+                      prod_error_code=prod_errcode,
+                      prod_error_info=prod_errinfo,
+                      data_id=data_id,
+                      log_id=log_id)
+            else:
+                
                 error_channeldata = ChannelData(
-                    error_code=ChannelDataErrcode.PRODUCT_ERROR.value,
-                    error_info="",
-                    prod_error_code=prod_errcode,
-                    prod_error_info=prod_errinfo,
-                    data_id=data_id,
-                    log_id=log_id)
+                  error_code=resp.err_no,
+                  error_info=resp.err_msg,
+                  data_id=data_id,
+                  log_id=log_id)
+                skip_process_dict[data_id] = True 
 
             if error_channeldata is not None:
                 err_channeldata_dict[data_id] = error_channeldata
@@ -1019,12 +1044,13 @@ class Op(object):
 
         # 2 kinds of errors
         if error_code != ChannelDataErrcode.OK.value or midped_batch is None:
-            error_info = "(log_id={}) {} failed to predict.".format(
-                typical_logid, self.name)
+            error_info = "[{}] failed to predict. {}. Please check the input dict and checkout PipelineServingLogs/pipeline.log for more details.".format(
+             self.name, error_info)
+    
             _LOGGER.error(error_info)
             for data_id in data_ids:
                 err_channeldata_dict[data_id] = ChannelData(
-                    error_code=ChannelDataErrcode.CLIENT_ERROR.value,
+                    error_code=error_code,
                     error_info=error_info,
                     data_id=data_id,
                     log_id=logid_dict.get(data_id))
@@ -1095,68 +1121,58 @@ class Op(object):
         _LOGGER.debug("{} Running postprocess".format(op_info_prefix))
         postped_data_dict = collections.OrderedDict()
         err_channeldata_dict = collections.OrderedDict()
+        @ErrorCatch
+        def postprocess_help(self, parsed_data_dict, midped_data, data_id, logid_dict):
+            postped_data, prod_errcode, prod_errinfo = self.postprocess(parsed_data_dict[data_id], 
+              midped_data, data_id, logid_dict.get(data_id))
+            if not isinstance(postped_data, dict):
+                raise CustomException(CustomExceptionCode.TYPE_ERROR, "postprocess should return dict", True)
+            return postped_data, prod_errcode, prod_errinfo
+
         for data_id, midped_data in midped_data_dict.items():
             log_id = logid_dict.get(data_id)
             postped_data, err_channeldata = None, None
             prod_errcode, prod_errinfo = None, None
-            try:
-                postped_data, prod_errcode, prod_errinfo = self.postprocess(
-                    parsed_data_dict[data_id], midped_data, data_id,
-                    logid_dict.get(data_id))
-            except Exception as e:
-                error_info = "(data_id={} log_id={}) {} Failed to postprocess: {}".format(
-                    data_id, log_id, op_info_prefix, e)
-                _LOGGER.error(error_info, exc_info=True)
-                err_channeldata = ChannelData(
-                    error_code=ChannelDataErrcode.UNKNOW.value,
-                    error_info=error_info,
-                    data_id=data_id,
-                    log_id=log_id)
 
-            if prod_errcode is not None:
-                # product errors occured
+            post_res, resp = postprocess_help(self, parsed_data_dict, midped_data, data_id
+            = data_id, logid_dict = logid_dict)
+            if resp.err_no == CustomExceptionCode.OK.value:
+                postped_data, prod_errcode, prod_errinfo = post_res
+                if prod_errcode is not None:
+                  # product errors occured
+                    err_channeldata = ChannelData(
+                      error_code=ChannelDataErrcode.PRODUCT_ERROR.value,
+                      error_info="",
+                      prod_error_code=prod_errcode,
+                      prod_error_info=prod_errinfo,
+                      data_id=data_id,
+                      log_id=log_id)
+            else:
                 err_channeldata = ChannelData(
-                    error_code=ChannelDataErrcode.PRODUCT_ERROR.value,
-                    error_info="",
-                    prod_error_code=prod_errcode,
-                    prod_error_info=prod_errinfo,
+                    error_code=resp.err_no,
+                    error_info=resp.err_msg,
                     data_id=data_id,
                     log_id=log_id)
 
             if err_channeldata is not None:
                 err_channeldata_dict[data_id] = err_channeldata
                 continue
-            else:
-                if not isinstance(postped_data, dict):
-                    error_info = "(log_id={} log_id={}) {} Failed to postprocess: " \
-                            "output of postprocess funticon must be " \
-                            "dict type, but get {}".format(
-                                data_id, log_id, op_info_prefix,
-                                type(postped_data))
-                    _LOGGER.error(error_info)
-                    err_channeldata = ChannelData(
-                        error_code=ChannelDataErrcode.UNKNOW.value,
-                        error_info=error_info,
-                        data_id=data_id,
-                        log_id=log_id)
-                    err_channeldata_dict[data_id] = err_channeldata
-                    continue
 
-                output_data = None
-                err, _ = ChannelData.check_npdata(postped_data)
-                if err == 0:
-                    output_data = ChannelData(
-                        ChannelDataType.CHANNEL_NPDATA.value,
-                        npdata=postped_data,
-                        data_id=data_id,
-                        log_id=log_id)
-                else:
-                    output_data = ChannelData(
-                        ChannelDataType.DICT.value,
-                        dictdata=postped_data,
-                        data_id=data_id,
-                        log_id=log_id)
-                postped_data_dict[data_id] = output_data
+            output_data = None
+            err, _ = ChannelData.check_npdata(postped_data)
+            if err == 0:
+                output_data = ChannelData(
+                  ChannelDataType.CHANNEL_NPDATA.value,
+                  npdata=postped_data,
+                  data_id=data_id,
+                  log_id=log_id)
+            else:
+                output_data = ChannelData(
+                  ChannelDataType.DICT.value,
+                  dictdata=postped_data,
+                  data_id=data_id,
+                  log_id=log_id)
+            postped_data_dict[data_id] = output_data
         _LOGGER.debug("{} Succ postprocess".format(op_info_prefix))
         return postped_data_dict, err_channeldata_dict
 
@@ -1353,7 +1369,6 @@ class Op(object):
             _LOGGER.debug("op:{} parse_end:{}".format(op_info_prefix,
                                                       time.time()))
 
-            # print
             front_cost = int(round(_time() * 1000000)) - start
             for data_id, parsed_data in parsed_data_dict.items():
                 _LOGGER.debug(
@@ -1507,26 +1522,30 @@ class Op(object):
         Returns:
             TimeProfiler
         """
-        if is_thread_op:
-            with self._for_init_op_lock:
-                if not self._succ_init_op:
-                    # for the threaded version of Op, each thread cannot get its concurrency_idx
-                    self.concurrency_idx = None
-                    # init client
-                    self.client = self.init_client(self._client_config,
+        @ErrorCatch
+        def init_helper(self, is_thread_op, concurrency_idx):
+            if is_thread_op:
+                with self._for_init_op_lock:
+                    if not self._succ_init_op:
+                        # for the threaded version of Op, each thread cannot get its concurrency_idx
+                        self.concurrency_idx = None
+                        # init client
+                        self.client = self.init_client(self._client_config,
                                                    self._server_endpoints)
-                    # user defined
-                    self.init_op()
-                    self._succ_init_op = True
-                    self._succ_close_op = False
-        else:
-            self.concurrency_idx = concurrency_idx
-            # init client
-            self.client = self.init_client(self._client_config,
+                        # user defined
+                        self.init_op()
+                        self._succ_init_op = True
+                        self._succ_close_op = False
+            else:
+                self.concurrency_idx = concurrency_idx
+                # init client
+                self.client = self.init_client(self._client_config,
                                            self._server_endpoints)
-            # user defined
-            self.init_op()
-
+                # user defined
+                self.init_op() 
+        
+        init_helper(self, is_thread_op, concurrency_idx)
+        print("[OP Object] init success")
         # use a separate TimeProfiler per thread or process
         profiler = TimeProfiler()
         profiler.enable(True)

python/pipeline/pipeline_server.py

@@ -24,7 +24,7 @@ import yaml
 import io
 import time
 import os
-
+from .error_catch import ErrorCatch, CustomException, CustomExceptionCode, ParamChecker, ParamVerify
 from .proto import pipeline_service_pb2_grpc, pipeline_service_pb2
 from . import operator
 from . import dag
@@ -40,14 +40,22 @@ class PipelineServicer(pipeline_service_pb2_grpc.PipelineServiceServicer):
     """
     Pipeline Servicer entrance.
     """
-
     def __init__(self, name, response_op, dag_conf, worker_idx=-1):
-        super(PipelineServicer, self).__init__()
-        self._name = name
 
-        # init dag executor
-        self._dag_executor = dag.DAGExecutor(response_op, dag_conf, worker_idx)
-        self._dag_executor.start()
+        @ErrorCatch
+        @ParamChecker
+        def init_helper(self, name, response_op, 
+          dag_conf: dict,
+          worker_idx=-1):
+           self._name = name
+           self._dag_executor = dag.DAGExecutor(response_op, dag_conf, worker_idx)
+           self._dag_executor.start()
+            
+        super(PipelineServicer, self).__init__()
+        init_res = init_helper(self, name, response_op, dag_conf, worker_idx)
+        if init_res[1].err_no != CustomExceptionCode.OK.value :
+            raise CustomException(CustomExceptionCode.INIT_ERROR, "pipeline server init error")
+        print("[PipelineServicer] succ init")
         _LOGGER.info("[PipelineServicer] succ init")
 
     def inference(self, request, context):

python/requirements.txt

@@ -20,3 +20,5 @@ sentencepiece==0.1.92; platform_machine !=  "aarch64"
 sentencepiece; platform_machine ==  "aarch64"
 opencv-python==4.2.0.32; platform_machine !=  "aarch64"
 opencv-python; platform_machine == "aarch64"
+pytest 
+pynvml

python/setup.py.server.in

@@ -38,6 +38,9 @@ REQUIRED_PACKAGES = [
 ]
 
 packages=['paddle_serving_server',
+          'paddle_serving_server.env_check',
+          'paddle_serving_server.env_check.fit_a_line',
+          'paddle_serving_server.env_check.simple_web_service',
           'paddle_serving_server.proto',
           'paddle_serving_server.pipeline',
           'paddle_serving_server.pipeline.proto',
@@ -46,6 +49,12 @@ packages=['paddle_serving_server',
 
 package_dir={'paddle_serving_server':
              '${PADDLE_SERVING_BINARY_DIR}/python/paddle_serving_server',
+             'paddle_serving_server.env_check':
+             '${PADDLE_SERVING_BINARY_DIR}/python/paddle_serving_server/env_check',
+             'paddle_serving_server.env_check.fit_a_line':
+             '${PADDLE_SERVING_BINARY_DIR}/python/paddle_serving_server/env_check/fit_a_line',
+             'paddle_serving_server.env_check.simple_web_service':
+             '${PADDLE_SERVING_BINARY_DIR}/python/paddle_serving_server/env_check/simple_web_service',
              'paddle_serving_server.proto':
              '${PADDLE_SERVING_BINARY_DIR}/python/paddle_serving_server/proto',
              'paddle_serving_server.pipeline':
@@ -57,8 +66,8 @@ package_dir={'paddle_serving_server':
              'paddle_serving_server.pipeline.gateway.proto':
              '${PADDLE_SERVING_BINARY_DIR}/python/paddle_serving_server/pipeline/gateway/proto'}
 
-package_data={'paddle_serving_server': ['pipeline/gateway/libproxy_server.so'],}
-
+package_data={'paddle_serving_server': ['pipeline/gateway/libproxy_server.so', 'env_check/fit_a_line/*', 'env_check/simple_web_service/*', 'env_check/fit_a_line/uci_housing_model/*', 'env_check/fit_a_line/uci_housing_client/*', 'env_check/simple_web_service/uci_housing_model/*', 'env_check/simple_web_service/uci_housing_client/*'],}
+include_package_data=True
 setup(
     name='${SERVER_PACKAGE_NAME}',
     version= package_version,