startup.sh

#! /bin/bash

# This script is used when starting a docker image based GCE instance
# of the NiFi Registry. It is intended to configure the NiFi Registry
# so that the persistence provider is the Google Cloud Source Repo.

# Docker volumes (directory type)
# /tmp/config => /home/nifi/.ssh - Read only
# /tmp/ssh/id_rsa => /id_rsa - Read only
# /tmp/nifi-flow-repository => /nifi-flow-repository - Read/Write
# /tmp/providers.xml => /opt/nifi-registry/nifi-registry-0.4.0/conf/providers.xml - Read only

# Note that 1000 is uid/gid for NiFi user/group in the Docker container

# create directory for SSH keys
mkdir /tmp/ssh

# private SSH key to authenticate againt the Google Cloud Source Repo
# its associated public key needs to be registered on Source Repo
# this is the content of the id_rsa file we generated, change it with yours!
touch /tmp/ssh/id_rsa && chmod 600 /tmp/ssh/id_rsa
cat <<EOF >> /tmp/ssh/id_rsa
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
EOF

# clone the Google Cloud Source Repository
cd /tmp
ssh-agent bash -c 'ssh-add /tmp/ssh/id_rsa; git clone ssh://admin@pierrevillard.com@source.developers.google.com:2022/p/nifi-registry-245014/r/nifi-flow-repository'
chmod 755 /tmp/nifi-flow-repository
chown -R 1000:1000 /tmp/nifi-flow-repository

# Create the providers configuration for the NiFi Registry
# no user/password because we use SSH authentication
cat <<EOF > /tmp/providers.xml
<providers>
  <flowPersistenceProvider>
    <class>org.apache.nifi.registry.provider.flow.git.GitFlowPersistenceProvider</class>
    <property name="Flow Storage Directory">/nifi-flow-repository</property>
    <property name="Remote To Push">origin</property>
    <property name="Remote Access User"></property>
    <property name="Remote Access Password"></property>
  </flowPersistenceProvider>
  <extensionBundlePersistenceProvider>
    <class>org.apache.nifi.registry.provider.extension.FileSystemBundlePersistenceProvider</class>
    <property name="Extension Bundle Storage Directory">./extension_bundles</property>
  </extensionBundlePersistenceProvider>
</providers>
EOF
chown 1000:1000 /tmp/providers.xml

# .ssh/config and .ssh/known_hosts files
mkdir /tmp/config
cat <<EOF >> /tmp/config/config
Host source.developers.google.com
  HostName source.developers.google.com
  IdentityFile /id_rsa
EOF
ssh-keyscan -p 2022 source.developers.google.com >> /tmp/config/known_hosts
chown -R 1000:1000 /tmp/config

# change chmod on the private key to allow access to 'nifi' user inside container
chown 1000:1000 /tmp/ssh/id_rsa