Creating CPIs

To ensure a trusted and shared model of the business, Network Operators are responsible for creating CPIs Corda Package Installer. A signed ZIP/JAR combination of a CPB and a Group Policy File that defines not only the application code that a virtual node will run, but also the details of the MGM with which to register, and the details of network PKI requirements. . This is usually performed as part of onboarding the MGM or onboarding members to the application network. However, it is also necessary to create a new CPI in the following circumstances:

• A CorDapp Developer creates a new CPB for a new version of a Corda-deployed CorDapp Corda Distributed Application. A Java (or any JVM targeting language) application built using the Corda build toolchain and CorDapp API to solve some problem that is best solved in a decentralized manner. .
• A Cluster Administrator upgrades the Corda platform version.

In these cases, you must create a new CPI, incrementing the --cpi-version:

./corda-cli.sh package create-cpi \
--cpb <CPB_FILE> \
--group-policy <GROUP_POLICY_FILE_> \
--cpi-name "<CPI_Name>" \
--cpi-version "2.0.0.0-SNAPSHOT" \
--file <CPI_FILE_NAME> \
--keystore <SIGNING_KEY> \
--storepass "<SIGNING_KEY_PASSWORD>" \
--key "<SIGNING_KEY_NAME>"

corda-cli.cmd package create-cpi `
--cpb <CPB_FILE> `
--group-policy <GROUP_POLICY_FILE_> `
--cpi-name "<CPI_Name>" `
--cpi-version "2.0.0.0-SNAPSHOT" `
--file <CPI_FILE_NAME>`
--keystore <SIGNING_KEY> `
--storepass "<SIGNING_KEY_PASSWORD>" `
--key "<SIGNING_KEY_NAME>"

Once created, the Cluster Administrator can apply the new version of the CPI.