Add gh-assets-clone.sh script.

.gitignore

@@ -14,3 +14,4 @@
 /release
 /*.prom
 /.metrics.*.*.prom
+/.metrics.*.*.prom.unique

.travis.yml

@@ -12,6 +12,7 @@ before_install:
   && sudo chmod +x /usr/local/bin/docker-compose
 - sudo apt-get update && sudo apt-get install postgresql-client-common
 script:
+- ./gh-assets-clone.sh
 - go run mage.go -v all
 - "$HOME/gopath/bin/goveralls -coverprofile=cover.out -service=travis-ci"
 - go run mage.go docker

gh-assets-clone.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+# Script to setup the assets clone of the repository using GIT_ASSETS_BRANCH and
+# GIT_API_KEY.
+
+[ -z "$GIT_ASSETS_BRANCH" ] || exit 1
+[ -z "$GIT_API_KEY" ] || exit 1
+
+setup_git() {
+  git config --global user.email "travis@travis-ci.org" || exit 1
+  git config --global user.name "Travis CI" || exit 1
+}
+
+# Constants
+ASSETS_DIR=".assets-branch"
+
+# Clone the assets branch with the correct credentials
+git clone --single-branch -b "$GIT_ASSETS_BRANCH" \
+    "https://${GIT_API_KEY}@github.com/${TRAVIS_REPO_SLUG}.git" "$ASSETS_DIR" || exit 1
+

postgres_metrics_added_and_removed

@@ -2,10 +2,11 @@
 # Script to determine added and removed metrics.
 # Not currently used in CI but useful for inspecting complicated changes.
 
+# valid types: single or replicated
 type="$1"
-version="$2"
+pg_version="$2"
 old_version="$3"
 new_version="$4"
 
-comm -23 "$old_version" "$new_version" > ".metrics.${type}.${version}.removed"
-comm -13 "$old_version" "$new_version" > ".metrics.${type}.${version}.added"
+comm -23 "$old_version" "$new_version" > ".metrics.${type}.${pg_version}.removed"
+comm -13 "$old_version" "$new_version" > ".metrics.${type}.${pg_version}.added"