bin: handle creation of .env file in a nicer way

bin/deploy

@@ -1,4 +1,17 @@
 #! /usr/bin/env bash
+
+#
+# Prelude - make bash behave sanely
+# http://redsymbol.net/articles/unofficial-bash-strict-mode/
+#
+set -euo pipefail
+
+INCLUDE=$(dirname $(readlink -f $0))
+. $INCLUDE/setup_tools
+
+ensure_command triton
+ensure_triton_cns_is_enabled
+write_env_file
 triton env
 
 docker-compose build
@@ -8,7 +21,5 @@ export DOCKER_HOST=$_DOCKER_HOST
 export DOCKER_CERT_PATH=$_DOCKER_CERT_PATH
 export DOCKER_TLS_VERIFY=$_DOCKER_TLS_VERIFY
 
-./bin/setup
-
 docker-compose pull
 docker-compose up -d

bin/setup

@@ -1,82 +1,14 @@
 #! /usr/bin/env bash
 
-# setup.sh - Checks that all the required tools are present and that they are
-#            appropriately configured for deploying to Triton.
-#
-# Adapted from https://github.com/autopilotpattern/mysql/blob/master/setup.sh
-#
-
 #
 # Prelude
 #
+INCLUDE=$(dirname $(readlink -f $0))
+. $INCLUDE/setup_tools
+
 set -euo pipefail
 IFS=$'\n\t'
 
-#
-# Utilities
-#
-die() {
-  local msg="$@"
-  [[ -z "${msg}" ]] || {
-    echo
-    tput setaf 1  # red
-    tput bold
-    echo "${msg}"
-    tput sgr0     # reset
-  }
-  exit 1
-}
-
-#
-# Check functions
-#
-ensure_command() {
-  local cmd="$1"
-
-  command -v "${cmd}" > /dev/null 2>&1 || {
-    die "Couldn't find required command: ${cmd}"
-  }
-}
-
-ensure_docker_config_matches_triton_config_and_capture_triton_details() {
-  local docker_user=$(docker info 2>&1 | awk -F": " '/SDCAccount:/{print $2}')
-  local docker_dc=$(echo $DOCKER_HOST | awk -F"/" '{print $3}' | awk -F'.' '{print $1}')
-  TRITON_USER=$(triton profile get | awk -F": " '/account:/{print $2}')
-  TRITON_DC=$(triton profile get | awk -F"/" '/url:/{print $3}' | awk -F'.' '{print $1}')
-  TRITON_ACCOUNT=$(triton account get | awk -F": " '/id:/{print $2}')
-  if [[ ! "$docker_user" = "$TRITON_USER" ]] || [[ ! "$docker_dc" = "$TRITON_DC" ]]; then
-    echo "Docker user: ${docker_user}"
-    echo "Triton user: ${TRITON_USER}"
-    echo "Docker data center: ${docker_dc}"
-    echo "Triton data center: ${TRITON_DC}"
-    die "Your Triton configuration does not match your Docker configuration."
-  fi
-}
-
-ensure_triton_cns_is_enabled() {
-  local triton_cns_enabled=$(triton account get | awk -F": " '/cns/{print $2}')
-  [[ "$triton_cns_enabled" == "true" ]] || {
-    die "Triton CNS is required and not enabled."
-  }
-}
-
-write_env_file() {
-  [[ -f .env ]] || {
-    echo '# Consul discovery via Triton CNS' >> .env
-    echo CONSUL=consul.svc.${TRITON_ACCOUNT}.${TRITON_DC}.cns.joyent.com >> .env
-    echo SDC_KEY_ID=${SDC_KEY_ID} >> .env
-    echo SDC_ACCOUNT=${SDC_ACCOUNT} >> .env
-    echo SDC_URL=${SDC_URL} >> .env
-    echo >> .env
-  }
-}
-
-ensure_prerequisites() {
-  ensure_command docker
-  ensure_command docker-compose
-  ensure_command triton
-}
-
 #
 # Main
 #

bin/setup_tools

@@ -0,0 +1,82 @@
+#! /usr/bin/env bash
+
+# setup.sh - Checks that all the required tools are present and that they are
+#            appropriately configured for deploying to Triton.
+#
+# Adapted from https://github.com/autopilotpattern/mysql/blob/master/setup.sh
+#
+
+#
+# Prelude
+#
+set -euo pipefail
+IFS=$'\n\t'
+
+#
+# Utilities
+#
+die() {
+  local msg="$@"
+  [[ -z "${msg}" ]] || {
+    echo
+    tput setaf 1  # red
+    tput bold
+    echo "${msg}"
+    tput sgr0     # reset
+  }
+  exit 1
+}
+
+#
+# Check functions
+#
+ensure_command() {
+  local cmd="$1"
+
+  command -v "${cmd}" > /dev/null 2>&1 || {
+    die "Couldn't find required command: ${cmd}"
+  }
+}
+export -f ensure_command
+
+ensure_docker_config_matches_triton_config_and_capture_triton_details() {
+  local docker_user=$(docker info 2>&1 | awk -F": " '/SDCAccount:/{print $2}')
+  local docker_dc=$(echo $DOCKER_HOST | awk -F"/" '{print $3}' | awk -F'.' '{print $1}')
+  TRITON_USER=$(triton profile get | awk -F": " '/account:/{print $2}')
+  TRITON_DC=$(triton profile get | awk -F"/" '/url:/{print $3}' | awk -F'.' '{print $1}')
+  TRITON_ACCOUNT=$(triton account get | awk -F": " '/id:/{print $2}')
+  if [[ ! "$docker_user" = "$TRITON_USER" ]] || [[ ! "$docker_dc" = "$TRITON_DC" ]]; then
+    echo "Docker user: ${docker_user}"
+    echo "Triton user: ${TRITON_USER}"
+    echo "Docker data center: ${docker_dc}"
+    echo "Triton data center: ${TRITON_DC}"
+    die "Your Triton configuration does not match your Docker configuration."
+  fi
+}
+export -f ensure_docker_config_matches_triton_config_and_capture_triton_details
+
+ensure_triton_cns_is_enabled() {
+  local triton_cns_enabled=$(triton account get | awk -F": " '/cns/{print $2}')
+  [[ "$triton_cns_enabled" == "true" ]] || {
+    die "Triton CNS is required and not enabled."
+  }
+}
+export -f ensure_triton_cns_is_enabled
+
+write_env_file() {
+  [[ -f .env ]] || {
+    echo '# Consul discovery via Triton CNS' >> .env
+    echo CONSUL=consul.svc.${TRITON_ACCOUNT}.${TRITON_DC}.cns.joyent.com >> .env
+    echo SDC_KEY_ID=${SDC_KEY_ID} >> .env
+    echo SDC_ACCOUNT=${SDC_ACCOUNT} >> .env
+    echo SDC_URL=${SDC_URL} >> .env
+    echo >> .env
+  }
+}
+export -f write_env_file
+
+ensure_prerequisites() {
+  ensure_command docker
+  ensure_command docker-compose
+  ensure_command triton
+}