generate.sh

#!/bin/bash
# This script helps us generate the Go source code from protocol buffer files where the
# protocol buffers are stored in the github.com/rotationalio/ensign repository. If the
# script cannot find the repository it exits without error after printing a warning that
# the other repository must be cloned first.

# Find the rotationalio/ensign repository using the $GOPATH or a path relative to the
# generate.sh script if $GOPATH is not set.
if [[ -z "${GOPATH}" ]]; then
    DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
    PROTOS=$(realpath "$DIR/../ensign/proto")
else
    PROTOS="${GOPATH}/src/github.com/rotationalio/ensign/proto"
fi

# If the protos directory does not exist, exit with a warning
if [[ ! -d $PROTOS ]]; then
    echo "cannot find ${PROTOS}"
    echo "must clone the github.com/rotationalio/ensign repo before generating protocol buffers"
    exit 0
fi

MODULE="github.com/rotationalio/go-ensign"
APIMOD="github.com/rotationalio/go-ensign/api/v1beta1;api"
MMEMOD="github.com/rotationalio/go-ensign/mimetype/v1beta1;mimetype"
REGMOD="github.com/rotationalio/go-ensign/region/v1beta1;region"

# Generate the protocol buffers
protoc -I ${PROTOS} \
    --go_out=. \
    --go_opt=module="${MODULE}" \
    --go_opt=Mmimetype/v1beta1/mimetype.proto="${MMEMOD}" \
    mimetype/v1beta1/mimetype.proto

protoc -I ${PROTOS} \
    --go_out=. \
    --go_opt=module="${MODULE}" \
    --go_opt=Mregion/v1beta1/region.proto="${REGMOD}" \
    region/v1beta1/region.proto

protoc -I ${PROTOS} \
    --go_out=. --go-grpc_out=. \
    --go_opt=module="${MODULE}" \
    --go_opt=Mmimetype/v1beta1/mimetype.proto="${MMEMOD}" \
    --go_opt=Mregion/v1beta1/region.proto="${REGMOD}" \
    --go_opt=Mapi/v1beta1/ensign.proto="${APIMOD}" \
    --go_opt=Mapi/v1beta1/event.proto="${APIMOD}" \
    --go_opt=Mapi/v1beta1/topic.proto="${APIMOD}" \
    --go_opt=Mapi/v1beta1/groups.proto="${APIMOD}" \
    --go_opt=Mapi/v1beta1/query.proto="${APIMOD}" \
    --go-grpc_opt=module="${MODULE}" \
    --go-grpc_opt=Mmimetype/v1beta1/mimetype.proto="${MMEMOD}" \
    --go-grpc_opt=Mregion/v1beta1/region.proto="${REGMOD}" \
    --go-grpc_opt=Mapi/v1beta1/ensign.proto="${APIMOD}" \
    --go-grpc_opt=Mapi/v1beta1/event.proto="${APIMOD}" \
    --go-grpc_opt=Mapi/v1beta1/topic.proto="${APIMOD}" \
    --go-grpc_opt=Mapi/v1beta1/groups.proto="${APIMOD}" \
    --go-grpc_opt=Mapi/v1beta1/query.proto="${APIMOD}" \
    api/v1beta1/ensign.proto \
    api/v1beta1/event.proto \
    api/v1beta1/topic.proto \
    api/v1beta1/groups.proto \
    api/v1beta1/query.proto