diff options
author | joewilliams <joe@joetify.com> | 2011-01-27 18:15:25 +0100 |
---|---|---|
committer | Tuncer Ayaz <tuncer.ayaz@gmail.com> | 2011-01-27 18:37:39 +0100 |
commit | 5298e93a180e6db87a33f26eb6a2db06e8065dc7 (patch) | |
tree | 179659725014a0263e608cc0d4c3857a40eb53f6 /test/upgrade_project/rel/files/erl | |
parent | 3fd3bfc89a614728c21360ecb91d8a5029f7d0b3 (diff) |
Add 'generate-upgrade' command
To support OTP release upgrades I have added support for building
upgrade packages. Support for this is included in the
rebar_upgrade module, specifically generate_upgrade/2. It requires
one variable to be set on the command line 'previous_release' which
is the absolute path or relative path from 'rel/' to the previous
release one is upgrading from. Running an upgrade will create the
needed files, including a relup and result in a tarball containing
the upgrade being written to 'rel/'. When done it cleans up the
temporary files systools created.
Usage:
$ rebar generate-upgrade previous_release=/path/to/old/version
This also includes a dummy application that can be used to test
upgrades as well as an example.
Special thanks to Daniel Reverri, Jesper Louis Andersen and
Richard Jones for comments and patches.
Diffstat (limited to 'test/upgrade_project/rel/files/erl')
-rwxr-xr-x | test/upgrade_project/rel/files/erl | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/test/upgrade_project/rel/files/erl b/test/upgrade_project/rel/files/erl new file mode 100755 index 0000000..b985f23 --- /dev/null +++ b/test/upgrade_project/rel/files/erl @@ -0,0 +1,34 @@ +#!/bin/bash + +## This script replaces the default "erl" in erts-VSN/bin. This is necessary +## as escript depends on erl and in turn, erl depends on having access to a +## bootscript (start.boot). Note that this script is ONLY invoked as a side-effect +## of running escript -- the embedded node bypasses erl and uses erlexec directly +## (as it should). +## +## Note that this script makes the assumption that there is a start_clean.boot +## file available in $ROOTDIR/release/VSN. + +# Determine the abspath of where this script is executing from. +ERTS_BIN_DIR=$(cd ${0%/*} && pwd) + +# Now determine the root directory -- this script runs from erts-VSN/bin, +# so we simply need to strip off two dirs from the end of the ERTS_BIN_DIR +# path. +ROOTDIR=${ERTS_BIN_DIR%/*/*} + +# Parse out release and erts info +START_ERL=`cat $ROOTDIR/releases/start_erl.data` +ERTS_VSN=${START_ERL% *} +APP_VSN=${START_ERL#* } + +BINDIR=$ROOTDIR/erts-$ERTS_VSN/bin +EMU=beam +PROGNAME=`echo $0 | sed 's/.*\\///'` +CMD="$BINDIR/erlexec" +export EMU +export ROOTDIR +export BINDIR +export PROGNAME + +exec $CMD -boot $ROOTDIR/releases/$APP_VSN/start_clean ${1+"$@"} |