Add get channel config endpoint

bootup/docker-compose-files/docker-compose.dev.yml

@@ -0,0 +1,94 @@
+# This compose file will deploy the services, and bootup a postgres server.
+
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+#  cello-dashboard: dashboard service for cello
+#  cello-api-engine: api engine service of cello to provide RESTful APIs, listen on 8080
+#  cello-postgres: postgres db 
+
+version: '3.2'
+services:
+  cello-dashboard:
+    image: hyperledger/cello-dashboard
+    container_name: cello-dashboard
+    ports:
+      - "${DASHBOARD_SERVICE_PORT}:8081"
+    networks:
+      - cello-net
+
+  # pg database
+  cello-postgres:
+    image: postgres:11.1
+    container_name: cello-postgres
+    restart: unless-stopped
+    environment:
+      - POSTGRES_DB=api_engine
+      - POSTGRES_USER=postgres
+      - POSTGRES_PASSWORD=123456
+    ports:
+      - "5432:5432"
+    volumes:
+      - /opt/cello/pgdata:/var/lib/postgresql/data
+    networks:
+      - cello-net
+
+  cello-redis:
+    image: redis:4.0.13
+    hostname: cello-redis
+    container_name: cello-redis
+    volumes:
+    - /opt/cello/redis:/data
+
+  # api engine service of cello 
+  cello-api-engine:
+    image: hyperledger/cello-api-engine
+    container_name: cello-api-engine
+    restart: unless-stopped
+    stdin_open: true
+    dns_search: .
+    environment:
+      - GODEBUG=netdns=go
+      - DB_NAME=api_engine
+      - DB_USER=postgres
+      - DB_PASSWORD=123456
+      - DB_HOST=cello-postgres
+      - CELERY_BROKER_URL=redis://redis
+      - DB_PORT=5432
+      - DEBUG=True
+      - CORE_VM_ENDPOINT=unix:///host/var/run/docker.sock
+      - FABRIC_LOGGING_SPEC=INFO
+    ports:
+      - "8080:8080"
+    volumes:
+      - /opt/cello:/opt/cello
+    networks:
+      - cello-net
+
+  # cello docker agent may deploy to an individual server. This cofig only serves development purpose.
+  cello-docker-agent:
+    image: hyperledger/cello-agent-docker
+    container_name: cello-docker-agent
+    hostname: cello.docker.agent
+    restart: always
+    ports:
+      - "2375:2375"
+      - "5001:5001"
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+    environment:
+      - DOCKER_URL=unix://var/run/docker.sock
+      - STORAGE_PATH=/opt/hyperledger
+    networks:
+      - cello-net
+
+networks:
+  cello-net:
+    name: cello-net
+
+volumes:
+  cello-api-engine:
+  cello-postgres:
+  cello-dashboard:
+  cello-docker-agent:

src/api-engine/api/lib/configtxlator/configtxlator.py

@@ -1,7 +1,7 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 #
-from subprocess import call
+from subprocess import call, run
 from api.config import FABRIC_TOOL
 
 
@@ -10,9 +10,8 @@ class ConfigTxLator:
     Class represents configtxlator CLI.
     """
 
-    def __init__(self, filepath="", configtxlator=FABRIC_TOOL, version="2.2.0"):
+    def __init__(self, configtxlator=FABRIC_TOOL, version="2.2.0"):
         self.configtxlator = configtxlator + "/configtxlator"
-        self.filepath = filepath
         self.version = version
 
     def proto_encode(self, input, type, output):
@@ -25,16 +24,17 @@ def proto_encode(self, input, type, output):
             output: A file to write the output to.
         """
         try:
-            call([self.configtxlator,
-                  "--input", "{}/{}".format(self.filepath, input),
-                  "--type", type,
-                  "--output", "{}/{}".format(self.filepath, output),
-                  ])
+            res = call([self.configtxlator,
+                  "proto_encode",
+                  "--input={}".format(input),
+                  "--type={}".format(type),
+                  "--output={}".format(output),
+                ])
         except Exception as e:
             err_msg = "configtxlator proto decode fail! "
             raise Exception(err_msg + str(e))
 
-    def proto_decode(self, input, type, output):
+    def proto_decode(self, input, type):
         """
         Converts a proto message to JSON.
 
@@ -44,11 +44,16 @@ def proto_decode(self, input, type, output):
             output: A file to write the output to.
         """
         try:
-            call([self.configtxlator,
-                  "--input", "{}/{}".format(self.filepath, input),
-                  "--type", type,
-                  "--output", "{}/{}".format(self.filepath, output),
-                  ])
+            res = run([self.configtxlator,
+                  "proto_decode",
+                  "--type={}".format(type),
+                  "--input={}".format(input),
+                  ], 
+                  capture_output= True)
+            if res.returncode == 0 :
+                return res.stdout
+            else:
+                return res.stderr
         except Exception as e:
             err_msg = "configtxlator proto decode fail! "
             raise Exception(err_msg + str(e))
@@ -66,10 +71,11 @@ def compute_update(self, original, updated, channel_id, output):
         """
         try:
             call([self.configtxlator,
-                  "--original", original,
-                  "--updated", updated,
-                  "--channel_id", channel_id,
-                  "--output", "{}/{}".format(self.filepath, output)
+                  "compute_update",
+                  "--original={}".format(original),
+                  "--updated={}".format(updated),
+                  "--channel_id={}".format(channel_id),
+                  "--output={}".format(output),
                   ])
         except Exception as e:
             err_msg = "configtxlator compute update fail! "

src/api-engine/api/lib/peer/channel.py

@@ -70,21 +70,25 @@ def update(self, channel, channel_tx, orderer_url):
         res = res >> 8
         return res
 
-    def fetch(self, option, channel, orderer_url, time_out="90s"):
+    def fetch(self, option, channel):
         """
         Fetch a specified block, writing it to a file e.g. <channelID>.block.
         params:
             option: block option newest|oldest|config|(block number).
             channel: channel id.
-            orderer_url: Ordering service endpoint.
         """
         try:
-            res = os.system("{} channel fetch {} -c {} -o {} --timeout {}".format(
-                self.peer, option, channel, orderer_url, time_out))
+            res = subprocess.call(args=[
+                self.peer,
+                "channel",
+                "fetch",
+                "{}".format(option),
+                "-c",
+                channel
+                ])
         except Exception as e:
             err_msg = "fetch a specified block failed {}!".format(e)
             raise Exception(err_msg)
-        res = res >> 8
         return res
 
     def signconfigtx(self, channel_tx):

src/api-engine/api/models.py

@@ -33,6 +33,7 @@
     FabricVersions,
 )
 from api.utils.common import make_uuid, random_name, hash_file
+from api.config import CELLO_HOME
 
 SUPER_USER_TOKEN = getattr(settings, "ADMIN_TOKEN", "")
 MAX_CAPACITY = getattr(settings, "MAX_AGENT_CAPACITY", 100)
@@ -750,6 +751,8 @@ class Channel(models.Model):
         help_text="Orderer list in the channel",
     )
 
+    def get_channel_config_path(self):
+        return "/var/www/server/" + self.name +"_config.block"
     # class ChainCode(models.Model):
     #     id = models.UUIDField(
     #         primary_key=True,

src/api-engine/api/routes/channel/views.py

@@ -2,6 +2,7 @@
 # SPDX-License-Identifier: Apache-2.0
 #
 from rest_framework import viewsets, status
+from rest_framework.decorators import action
 from rest_framework.response import Response
 from rest_framework_jwt.authentication import JSONWebTokenAuthentication
 
@@ -12,10 +13,11 @@
 
 from api.config import CELLO_HOME
 from api.common.serializers import PageQuerySerializer
-from api.utils.common import with_common_response
+from api.utils.common import with_common_response, to_dict
 from api.auth import TokenAuth
 from api.lib.configtxgen import ConfigTX, ConfigTxGen
 from api.lib.peer.channel import Channel as PeerChannel
+from api.lib.configtxlator.configtxlator import ConfigTxLator
 from api.exceptions import (
     ResourceNotFound,
 )
@@ -31,6 +33,10 @@
     ChannelUpdateSerializer
 )
 from api.common import ok, err
+from api.common.enums import (
+    NodeStatus,
+    FabricNodeType,
+)
 
 
 class ChannelViewSet(viewsets.ViewSet):
@@ -188,7 +194,35 @@ def update(self, request, pk=None):
                 return Response(status=status.HTTP_202_ACCEPTED)
             except ObjectDoesNotExist:
                 raise ResourceNotFound
-
+    @swagger_auto_schema(
+        responses=with_common_response({status.HTTP_200_OK: "Accepted"}),
+    )
+    @action(
+        methods=["get"], 
+        detail=True,
+         url_path="config"
+    )
+    def get_channel_org_config(self, request, pk=None):
+        try:
+            org = request.user.organization
+            channel = Channel.objects.get(id=pk)
+            path = channel.get_channel_config_path()
+            node = Node.objects.filter(
+                organization=org, 
+                type=FabricNodeType.Peer.name.lower(), 
+                status=NodeStatus.Running.name.lower()
+            ).first()
+            dir_node = "{}/{}/crypto-config/peerOrganizations".format(
+            CELLO_HOME, org.name)
+            env = {
+                "FABRIC_CFG_PATH": "{}/{}/peers/{}/".format(dir_node, org.name, node.name + "." + org.name),
+            }
+            peer_channel_cli = PeerChannel("v2.2.0", **env)
+            peer_channel_cli.fetch(option="config", channel=channel.name)
+            config = ConfigTxLator().proto_decode(input=path,type="common.Block")
+        except ObjectDoesNotExist:
+            raise ResourceNotFound
+        return Response(data=to_dict(config, org.name.split(".")[0].capitalize()),status=status.HTTP_200_OK)
 
 def init_env_vars(node, org):
     """

src/api-engine/api/utils/common.py

@@ -12,6 +12,7 @@
 from api.common.serializers import BadResponseSerializer
 import uuid
 from zipfile import ZipFile
+from json import loads
 
 
 def make_uuid():
@@ -129,3 +130,21 @@ def zip_file(dirpath, outFullName):
     zfile = ZipFile(outFullName, "w")
     zfile.write(dirpath, dirpath.rsplit("/", 1)[1])
     zfile.close()
+
+def to_dict(data, org_name):
+    """
+    Parse org config from channel config block.
+
+    :param data: channel config block in json format.
+    :param org_name: the organization prefix name
+    :return organization config
+    """
+    config = loads(data)
+    if config.get("data") != None:
+        payloads = config["data"]["data"]
+        for p in payloads:
+            groups = p["payload"]["data"]["config"]["channel_group"]["groups"]["Application"]["groups"]
+            res = groups.get(org_name, None) 
+            if res != None:
+                return res
+    return {"error": "can't find channel config"}