Update REST Proxy Settings for Running Chaincodes

If you're using Node.js or Java chaincodes which are dependent on external libraries, a few proxy settings must be updated.

You must complete these steps before you instantiate the chaincode. See Instantiate a Chaincode.

Node.js Chaincode

When your Node.js chaincode is instantiated, npm is used to install all dependency libraries from the internet, so in an Oracle Blockchain Platform instance, if there is such a dependancy, you need to ensure the bcs/fabric-ccenv image has internet access.

Set the HTTP proxy for the bcs/fabric-ccenv image following these steps:

1. Create a Docker file in any location in your VM with the following content (where http://hostname:port is your HTTP proxy access entry):

   FROM bcs/fabric-ccenv:latest
   ENV npm_config_proxy http://hostname:port

2. Build the image again:

   docker build -f Dockerfile -t bcs/fabric-ccenv:latest

Java Chaincode

To configure the proxy to run Java chaincode:

1. Gradle-only: Create gradle.properties in a local directory, and add the following content in it:

   systemProp.http.proxyHost=[proxy host]
   systemProp.http.proxyPort=[proxy port]
   systemProp.https.proxyHost=[proxy host]
   systemProp.https.proxyPort=[proxy port]

2. Maven-only: Create settings.xml in a local directory, and add the following content in it:

   <settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
   xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0
   https://maven.apache.org/xsd/settings-1.0.0.xsd"> 
   <localRepository/>
   <interactiveMode/> 
   <usePluginRegistry/> 
   <offline/> 
   <pluginGroups/>
   <servers/> 
   <mirrors/> 
   <proxies> 
   <proxy> 
   <id>httpproxy</id>
   <active>true</active> 
   <protocol>http</protocol> 
   <host>[proxy host]</host> 
   <port>[proxy port]</port> 
   </proxy>
   <proxy> 
   <id>httpsproxy</id> 
   <active>true</active> 
   <protocol>https</protocol> 
   <host>[proxy host]</host> 
   <port>[proxy port]</port> 
   </proxy> 
   </proxies> 
   <profiles/> 
   <activeProfiles/>
   </settings>

3. Create a Docker file and add the following to it:

   FROM bcs/fabric-javaenv:latest
   COPY gradle.properties /root/.gradle/
   COPY settings.xml /root/.m2/

4. Create a new image:

   docker build -f dockerfile -t bcs/fabric-javaenv:latest