Add a backup script

backup.sh

@@ -0,0 +1,86 @@
+#!/usr/bin/env bash
+
+# Fail on error.
+# ==============
+
+set -e
+
+
+# Be somewhere predictable.
+# =========================
+
+cd "`dirname $0`"
+
+
+# Helpers
+# =======
+
+confirm () {
+    proceed=""
+    while [ "$proceed" != "y" ]; do
+        read -p"$1 (y/N) " proceed
+        if [ "$proceed" == "n" -o "$proceed" == "N" -o "$proceed" == "" ]
+        then
+            return 1
+        fi
+    done
+    return 0
+}
+
+require () {
+    if [ ! `which $1` ]; then
+        echo "The '$1' command was not found."
+        return 1 
+    fi
+    return 0
+}
+
+get_filepath () {
+    TODAY="`date +%F`"
+    CANDIDATE="$DIRPATH/$TODAY.psql"
+    if [ -f "$CANDIDATE" ]
+    then
+        echo "      $CANDIDATE" >&2
+        for x in {a..z}
+        do
+            CANDIDATE="$DIRPATH/$TODAY$x.psql"
+            if [ ! -f "$CANDIDATE" ]
+            then
+                break
+            fi
+            echo "      $CANDIDATE" >&2
+        done
+        if [ -f "$CANDIDATE" ]
+        then
+            CANDIDATE=""
+        else
+            echo "----> $CANDIDATE" >&2
+            echo >&2
+        fi
+    fi
+    echo "$CANDIDATE"
+}
+
+
+# Work
+# ====
+
+require foreman
+require heroku
+require pg_dump
+
+DIRPATH="../backups"
+FILEPATH=$(get_filepath)
+
+if [ "$FILEPATH" = "" ]
+then
+    exit "Too many backups!"
+fi
+
+confirm "Backup the Gittip database to $FILEPATH?"
+if [ $? -eq 0 ]; then
+    export PGSSLMODE=require
+    heroku config -s -a gittip \
+        | foreman run -e /dev/stdin ./configure-pg-env.sh \
+        | foreman run -e /dev/stdin pg_dump > $FILEPATH
+fi

configure-pg-env.sh

@@ -0,0 +1,42 @@
+#!/usr/bin/env bash
+
+# Parse DATABASE_URL
+# ==================
+# We will export PG* envvars based on the contents of DATABASE_URL. For 
+# envvars, see http://www.postgresql.org/docs/current/static/libpq-envars.html
+# I committed this but @pjz wrote it: https://gist.github.com/pjz/5855367.
+
+if [ "$DATABASE_URL" = "" ]; then 
+    echo "Please set DATABASE_URL, perhaps by sourcing default_tests.env or something.";
+exit 1; fi
+
+# remove the protocol
+url=`echo $DATABASE_URL | sed -e s,postgres://,,g`
+
+# extract the user (if any)
+userpass="`echo $url | grep @ | cut -d@ -f1`"
+pass=`echo $userpass | grep : | cut -d: -f2`
+if [ -n "$pass" ]; then
+    user=`echo $userpass | grep : | cut -d: -f1`
+else
+    user=$userpass
+fi
+
+# extract the host
+hostport=`echo $url | sed -e s,$userpass@,,g | cut -d/ -f1`
+port=`echo $hostport | grep : | cut -d: -f2`
+if [ -n "$port" ]; then
+    host=`echo $hostport | grep : | cut -d: -f1`
+else
+    host=$hostport
+fi
+
+# extract the path (if any)
+path="`echo $url | grep / | cut -d/ -f2-`"
+
+# echo envvars for psql
+echo PGUSER=$user
+echo PGPASSWORD=$pass
+echo PGHOST=$host
+echo PGPORT=$port
+echo PGDATABASE=$path

recreate-schema.sh

@@ -7,49 +7,11 @@ set -e
 #   usage: DATABASE_URL=postgres://foo:bar@baz:5234/buz recreate-schema.sh
 
 
-# Parse DATABASE_URL
-# ==================
-# We will export PG* envvars based on the contents of DATABASE_URL. For 
-# envvars, see http://www.postgresql.org/docs/current/static/libpq-envars.html
-# I committed this but @pjz wrote it: https://gist.github.com/pjz/5855367.
-
-if [ "$DATABASE_URL" = "" ]; then 
-    echo "Please set DATABASE_URL, perhaps by sourcing default_tests.env or something.";
-exit 1; fi
-
-# remove the protocol
-url=`echo $DATABASE_URL | sed -e s,postgres://,,g`
-
-# extract the user (if any)
-userpass="`echo $url | grep @ | cut -d@ -f1`"
-pass=`echo $userpass | grep : | cut -d: -f2`
-if [ -n "$pass" ]; then
-    user=`echo $userpass | grep : | cut -d: -f1`
-else
-    user=$userpass
-fi
-
-# extract the host
-hostport=`echo $url | sed -e s,$userpass@,,g | cut -d/ -f1`
-port=`echo $hostport | grep : | cut -d: -f2`
-if [ -n "$port" ]; then
-    host=`echo $hostport | grep : | cut -d: -f1`
-else
-    host=$hostport
-fi
-
-# extract the path (if any)
-path="`echo $url | grep / | cut -d/ -f2-`"
-
-# export envvars for psql
-export PGUSER=$user
-export PGPASSWORD=$pass
-export PGHOST=$host
-export PGPORT=$port
-export PGDATABASE=$path
-
-echo 'PG environment variables:'
-env | grep ^PG
+# Configure the Postgres environment.
+# ===================================
+
+export `./configure-pg-env.sh`
+
 
 
 echo "=============================================================================="