chore(compose) - update run.sh wrapper script

compose/run.sh

@@ -1,10 +1,29 @@
 #!/bin/bash
 
-readonly ME=${0##*/}
-DGRAPH_ROOT=$(dirname "${BASH_SOURCE[0]}")/..
-readonly COMPOSE_FILE="./docker-compose.yml"
+main() {
+  setup $@
 
-if [[ $1 == "-h" || $1 == "--help" ]]; then
+  set -e
+  build_compose_tool $@
+  build_dgraph_docker_image
+  launch_environment
+}
+
+setup() {
+  readonly ME=${0##*/}
+  DGRAPH_ROOT=$(dirname "${BASH_SOURCE[0]}")/..
+  readonly COMPOSE_FILE="./docker-compose.yml"
+
+  if [[ $1 == "-h" || $1 == "--help" ]]; then usage; fi
+
+  check_environment
+}
+
+Info() {
+    echo -e "INFO: $*"
+}
+
+usage() {
     cat <<EOF
 usage: ./run.sh [./compose args ...]
 
@@ -17,35 +36,62 @@ description:
     file first, then rebuild dgraph and bring up the config.
 EOF
     exit 0
-fi
+}
 
-function Info {
-    echo -e "INFO: $*"
+check_environment() {
+  command -v make > /dev/null || \
+    { echo "ERROR: 'make' command not not found" 1>&2; exit 1; }
+  command -v go > /dev/null || \
+    { echo "ERROR: 'go' command not not found" 1>&2; exit 1; }
+  command -v docker-compose > /dev/null || \
+    { echo "ERROR: 'docker-compose' command not not found" 1>&2; exit 1; }
+  ## GOPATH required for locally built docker images
+  [[ -z "${GOPATH}" ]] && \
+    { echo "ERROR: The env var of 'GOPATH' was not defined. Exiting" 1>&2; exit 1; }
 }
 
-#
-# MAIN
-#
+build_compose_tool() {
+  ## Always make compose if it doesn't exist
+  make compose
 
-set -e
+  ## Create compose file if it does not exist or compose parameters passed
+  if [[ $# -gt 0 ]] || ! [[ -f $COMPOSE_FILE ]]; then
+      Info "creating compose file ..."
+      ./compose "$@"
+  fi
 
-if [[ $# -gt 0 ]]; then
-    Info "creating compose file ..."
-    go build compose.go
-    ./compose "$@"
-fi
+  if [[ ! -e $COMPOSE_FILE ]]; then
+      echo >&2 "$ME: no '$COMPOSE_FILE' found"
+      exit 1
+  fi
+}
 
-if [[ ! -e $COMPOSE_FILE ]]; then
-    echo >&2 "$ME: no $COMPOSE_FILE found"
+build_dgraph_docker_image() {
+  ## linux binary required for docker image
+  export GOOS=linux
+  Info "rebuilding dgraph ..."
+  ( cd $DGRAPH_ROOT/dgraph && make install )
+}
+
+launch_environment() {
+  # Detect if $GOPATH/bin/$GOOS_$GOARCH path
+  if [[ -f $GOPATH/bin/linux_amd64/dgraph ]]; then
+    Info "Found '$GOPATH/bin/linux_amd64/dgraph'. Updating $COMPOSE_FILE."
+    sed -i 's/\$GOPATH\/bin$/\$GOPATH\/bin\/linux_amd64/' $COMPOSE_FILE
+  # if no dgraph binary found, abort
+  elif ! [[ -f $GOPATH/bin/dgraph ]]; then
+    echo "ERROR: '$GOPATH/bin/dgraph' not found. Exiting" 1>&2
     exit 1
-fi
+  else
+    Info "Found '$GOPATH/bin/dgraph'
+  fi
 
-Info "rebuilding dgraph ..."
-( cd $DGRAPH_ROOT/dgraph && make install )
+  # No need to down existing containers, if any.
+  # The up command handles that automatically
 
-# No need to down existings containers, if any.
-# The up command handles that automatically
+  Info "Bringing up containers"
+  docker-compose -p dgraph down
+  docker-compose --compatibility -p dgraph up --force-recreate --remove-orphans
+}
 
-Info "bringing up containers"
-docker-compose -p dgraph down
-docker-compose --compatibility -p dgraph up --force-recreate --remove-orphans
+main $@