feat: Implement cargo collection (#16)

* Install dependencies

* Use Node 12 in functional tests

* Transpile TS in Docker container instead of host

So we can use Node 12

* Fix syntax error in Circle CI config

* Fix typo

* Fix permissions after transpiling TS in functional tests

* Fix args passed to `chown`

* Implement stub for server

* Implement server

* Remove stub client used for testing

* Refactor

* Rename NATS subject for parcels received via PDC

* Implement deliverCargo() method

* Rename "relayer", "user gateway" and "relaying gateway"

AwalaApp/specs#39

* Fix conding convention violation

* Complete service implementation integration

* Upgrade NATS streaming server

* Implement function to publish messages with NATS streaming

* Support streaming arrays

* Prevent NATS publisher from being reused

* Move NATS publisher to new class

* Make NATS Streaming connection async to simplify code

* Introduce method to send single NATS message

* Refactor tests ahead of implementation

* Migrate PoHTTP interface to NATS Streaming

* Upgrade Jest and related deps

* Convert stream-based implementation to iterable-based

* Fix processing of invalid cargoes

* Make NATS streaming publisher yield ids of published msgs

* Integrate NATS Streaming in deliverCargo method

* Remove plain NATS integration

* Integrate NATS Streaming in gRPC service factory

.circleci/config.yml

@@ -19,9 +19,12 @@ jobs:
             sudo mv ~/docker-compose /usr/local/bin/docker-compose
 
       # Install dependencies just so we can transpile the TS files to JS; then remove the deps.
-      - run: npm install
-      - run: npm run build
-      - run: rm -rf node_modules
+      - run:
+          name: Transpile project to JavaScript
+          command: |
+            docker run --rm -v "$(pwd):/tmp/gw" -w "/tmp/gw" node:12.15 bash -c "npm install && npm run build"
+            sudo chown --recursive "${USER}" build
+            sudo rm -rf node_modules
 
       - run: ./src/functional_tests/run.sh
 

docker-compose.yml

@@ -1,6 +1,6 @@
 version: '3.7'
 services:
-  app:
+  pohttp:
     build:
       dockerfile: Dockerfile.dev
       context: .
@@ -17,11 +17,23 @@ services:
       - mongodb
       - nats
 
+  cogrpc:
+    build:
+      dockerfile: Dockerfile.dev
+      context: .
+    image: relaynet-gw:local-dev
+    init: true
+    command: src/bin/cogrpc-server.ts
+    ports:
+      - '127.0.0.1:8081:8080'
+    volumes:
+      - ./src:/opt/gw-dev/src:ro
+
   mongodb:
     image: mongo:4.0
 
   nats:
-    image: nats-streaming:0.16.2
+    image: nats-streaming:0.17.0
     command: ['-DV']
     ports:
     - "127.0.0.1:4222:4222"