#!/usr/bin/env bash
#
# Builds and installs cni plugins to /opt/cni/bin,
# and create basic cni config in /etc/cni/net.d.
# The commit defined in vendor.conf
#
set -eu -o pipefail

CNI_COMMIT=$(grep containernetworking/plugins ${GOPATH}/src/github.com/containerd/containerd/vendor.conf | cut -d " " -f 2)
CNI_DIR=/opt/cni
CNI_CONFIG_DIR=/etc/cni/net.d

go get -d github.com/containernetworking/plugins/...
cd $GOPATH/src/github.com/containernetworking/plugins
git checkout $CNI_COMMIT
FASTBUILD=true ./build.sh
mkdir -p $CNI_DIR
cp -r ./bin $CNI_DIR
mkdir -p $CNI_CONFIG_DIR
bash -c 'cat >'$CNI_CONFIG_DIR'/10-containerd-net.conflist <<EOF
{
  "cniVersion": "0.3.1",
  "name": "containerd-net",
  "plugins": [
    {
      "type": "bridge",
      "bridge": "cni0",
      "isGateway": true,
      "ipMasq": true,
      "ipam": {
        "type": "host-local",
        "subnet": "10.88.0.0/16",
        "routes": [
          { "dst": "0.0.0.0/0" }
        ]
      }
    },
    {
      "type": "portmap",
      "capabilities": {"portMappings": true}
    }
  ]
}
EOF'