mirror of
https://github.com/correl/rebar.git
synced 2024-11-23 19:19:54 +00:00
Adding sketch of functionality for creating a reltool node from template
This commit is contained in:
Dave Smith
parent
8c4f35a294
commit
ec4e805898
8 changed files with 317 additions and 0 deletions
11
priv/templates/simplenode.app.config
Normal file
11
priv/templates/simplenode.app.config
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@ -0,0 +1,11 @@
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[
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%% SASL config
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{sasl, [
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{sasl_error_logger, {file, "log/sasl-error.log"}},
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{errlog_type, error},
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{error_logger_mf_dir, "log/sasl"}, % Log directory
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{error_logger_mf_maxbytes, 10485760}, % 10 MB max file size
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{error_logger_mf_maxfiles, 5} % 5 files max
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]}
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].
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34
priv/templates/simplenode.erl.script
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34
priv/templates/simplenode.erl.script
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@ -0,0 +1,34 @@
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#!/bin/bash
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## This script replaces the default "erl" in erts-VSN/bin. This is necessary
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## as escript depends on erl and in turn, erl depends on having access to a
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## bootscript (start.boot). Note that this script is ONLY invoked as a side-effect
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## of running escript -- the embedded node bypasses erl and uses erlexec directly
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## (as it should).
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##
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## Note that this script makes the assumption that there is a start_clean.boot
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## file available in $ROOTDIR/release/VSN.
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# Determine the abspath of where this script is executing from.
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ERTS_BIN_DIR=$(cd ${0%/*} && pwd)
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# Now determine the root directory -- this script runs from erts-VSN/bin,
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# so we simply need to strip off two dirs from the end of the ERTS_BIN_DIR
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# path.
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ROOTDIR=${ERTS_BIN_DIR%/*/*}
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# Parse out release and erts info
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START_ERL=`cat $ROOTDIR/releases/start_erl.data`
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ERTS_VSN=${START_ERL% *}
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APP_VSN=${START_ERL#* }
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BINDIR=$ROOTDIR/erts-$ERTS_VSN/bin
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EMU=beam
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PROGNAME=`echo $0 | sed 's/.*\///'`
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CMD="$BINDIR/erlexec"
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export EMU
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export ROOTDIR
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export BINDIR
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export PROGNAME
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exec $CMD -boot $ROOTDIR/releases/$APP_VSN/start_clean ${1+"$@"}
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80
priv/templates/simplenode.nodetool
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80
priv/templates/simplenode.nodetool
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@ -0,0 +1,80 @@
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%% -*- erlang -*-
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%% -------------------------------------------------------------------
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%%
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%% nodetool: Helper Script for interacting with live nodes
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%%
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%% -------------------------------------------------------------------
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main(Args) ->
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%% Extract the args
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{RestArgs, TargetNode} = process_args(Args, [], undefined),
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%% See if the node is currently running -- if it's not, we'll bail
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case net_adm:ping(TargetNode) of
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pong ->
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ok;
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pang ->
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io:format("Node ~p not responding to pings.\n", [TargetNode]),
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halt(1)
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end,
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case RestArgs of
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["ping"] ->
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%% If we got this far, the node already responsed to a ping, so just dump
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%% a "pong"
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io:format("pong\n");
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["stop"] ->
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io:format("~p\n", [rpc:call(TargetNode, init, stop, [], 60000)]);
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["restart"] ->
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io:format("~p\n", [rpc:call(TargetNode, init, restart, [], 60000)]);
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["reboot"] ->
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io:format("~p\n", [rpc:call(TargetNode, init, reboot, [], 60000)]);
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["rpc", Module, Function | RpcArgs] ->
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case rpc:call(TargetNode, list_to_atom(Module), list_to_atom(Function), [RpcArgs], 60000) of
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ok ->
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ok;
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{badrpc, Reason} ->
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io:format("RPC to ~p failed: ~p\n", [TargetNode, Reason]),
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halt(1);
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_ ->
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halt(1)
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end;
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Other ->
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io:format("Other: ~p\n", [Other]),
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io:format("Usage: nodetool {ping|stop|restart|reboot}\n")
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end,
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net_kernel:stop().
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process_args([], Acc, TargetNode) ->
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{lists:reverse(Acc), TargetNode};
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process_args(["-setcookie", Cookie | Rest], Acc, TargetNode) ->
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erlang:set_cookie(node(), list_to_atom(Cookie)),
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process_args(Rest, Acc, TargetNode);
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process_args(["-name", TargetName | Rest], Acc, _) ->
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ThisNode = append_node_suffix(TargetName, "_maint_"),
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{ok, _} = net_kernel:start([ThisNode, longnames]),
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process_args(Rest, Acc, nodename(TargetName));
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process_args(["-sname", TargetName | Rest], Acc, _) ->
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ThisNode = append_node_suffix(TargetName, "_maint_"),
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{ok, _} = net_kernel:start([ThisNode, shortnames]),
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process_args(Rest, Acc, nodename(TargetName));
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process_args([Arg | Rest], Acc, Opts) ->
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process_args(Rest, [Arg | Acc], Opts).
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nodename(Name) ->
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case string:tokens(Name, "@") of
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[_Node, _Host] ->
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list_to_atom(Name);
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[Node] ->
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[_, Host] = string:tokens(atom_to_list(node()), "@"),
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list_to_atom(lists:concat([Node, "@", Host]))
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end.
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append_node_suffix(Name, Suffix) ->
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case string:tokens(Name, "@") of
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[Node, Host] ->
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list_to_atom(lists:concat([Node, Suffix, os:getpid(), "@", Host]));
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[Node] ->
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list_to_atom(lists:concat([Node, Suffix, os:getpid()]))
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end.
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28
priv/templates/simplenode.reltool.config
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28
priv/templates/simplenode.reltool.config
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@ -0,0 +1,28 @@
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{sys, [
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{lib_dirs, []},
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{rel, "{{nodeid}}", "1",
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[
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kernel,
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stdlib,
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sasl
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]},
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{rel, "start_clean", "",
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[
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kernel,
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stdlib
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]},
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{boot_rel, "{{nodeid}}"},
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{profile, embedded},
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{excl_sys_filters, ["^bin/.*",
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"^erts.*/bin/(dialyzer|typer)"]},
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{app, riak, [{incl_cond, include}]},
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{app, sasl, [{incl_cond, include}]}
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]}.
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{rebar, [
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{empty_dirs, [
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"log/sasl"
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]},
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{overlay, "overlay"}
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]}.
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130
priv/templates/simplenode.runner
Executable file
130
priv/templates/simplenode.runner
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@ -0,0 +1,130 @@
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#!/bin/bash
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RUNNER_SCRIPT_DIR=$(cd ${0%/*} && pwd)
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RUNNER_BASE_DIR=${RUNNER_SCRIPT_DIR%/*}
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RUNNER_ETC_DIR=$RUNNER_BASE_DIR/etc
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RUNNER_LOG_DIR=$RUNNER_BASE_DIR/log
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PIPE_DIR=/tmp/$RUNNER_BASE_DIR/
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RUNNER_USER=
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# Make sure this script is running as the appropriate user
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if [ ! -z "$RUNNER_USER" ] && [ `whoami` != "$RUNNER_USER" ]; then
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exec sudo -u $RUNNER_USER -i $0 $@
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fi
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# Make sure CWD is set to runner base dir
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cd $RUNNER_BASE_DIR
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# Make sure log directory exists
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mkdir -p $RUNNER_LOG_DIR
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# Extract the target node name from node.args
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NAME_ARG=`grep -e '-[s]*name' $RUNNER_ETC_DIR/vm.args`
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if [ -z "$NAME_ARG" ]; then
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echo "vm.args needs to have either -name or -sname parameter."
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exit 1
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fi
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# Extract the target cookie
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COOKIE_ARG=`grep -e '-setcookie' $RUNNER_ETC_DIR/vm.args`
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if [ -z "$COOKIE_ARG" ]; then
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echo "vm.args needs to have a -setcookie parameter."
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exit 1
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fi
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# Identify the script name
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SCRIPT=`basename $0`
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# Parse out release and erts info
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START_ERL=`cat $RUNNER_BASE_DIR/releases/start_erl.data`
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ERTS_VSN=${START_ERL% *}
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APP_VSN=${START_ERL#* }
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# Add ERTS bin dir to our path
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ERTS_PATH=$RUNNER_BASE_DIR/erts-$ERTS_VSN/bin
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# Setup command to control the node
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NODETOOL="$ERTS_PATH/escript $ERTS_PATH/nodetool $NAME_ARG $COOKIE_ARG"
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# Check the first argument for instructions
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case "$1" in
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start)
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# Make sure there is not already a node running
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RES=`$NODETOOL ping`
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if [ "$RES" == "pong" ]; then
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echo "Node is already running!"
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exit 1
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fi
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export HEART_COMMAND="$RUNNER_BASE_DIR/bin/$SCRIPT start"
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mkdir -p $PIPE_DIR
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$ERTS_PATH/run_erl -daemon $PIPE_DIR $RUNNER_LOG_DIR "exec $RUNNER_BASE_DIR/bin/$SCRIPT console" 2>&1
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;;
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stop)
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# Wait for the node to completely stop...
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PID=`ps -ef|grep "$RUNNER_BASE_DIR/.*/[b]eam.smp|awk '{print $2}'"`
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$NODETOOL stop
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while `kill -0 $PID 2>/dev/null`;
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do
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sleep 1
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done
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;;
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restart)
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## Restart the VM without exiting the process
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$NODETOOL restart
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;;
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reboot)
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## Restart the VM completely (uses heart to restart it)
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$NODETOOL reboot
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;;
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ping)
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## See if the VM is alive
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$NODETOOL ping
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;;
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attach)
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# Make sure a node IS running
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RES=`$NODETOOL ping`
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if [ "$RES" != "pong" ]; then
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echo "Node is not running!"
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exit 1
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fi
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shift
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$ERTS_PATH/to_erl $PIPE_DIR
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;;
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console)
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# Setup beam-required vars
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ROOTDIR=$RUNNER_BASE_DIR
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BINDIR=$ROOTDIR/erts-$ERTS_VSN/bin
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EMU=beam
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PROGNAME=`echo $0 | sed 's/.*\///'`
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CMD="$BINDIR/erlexec -boot $RUNNER_BASE_DIR/releases/$APP_VSN/$SCRIPT -embedded -config $RUNNER_ETC_DIR/app.config -args_file $RUNNER_ETC_DIR/vm.args -- ${1+"$@"}"
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export EMU
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export ROOTDIR
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export BINDIR
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export PROGNAME
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# Dump environment info for logging purposes
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echo "Exec: $CMD"
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echo "Root: $ROOTDIR"
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# Log the startup
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logger -t "$SCRIPT[$$]" "Starting up"
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# Start the VM
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exec $CMD
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;;
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*)
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echo "Usage: $SCRIPT {start|stop|restart|reboot|ping|console|attach}"
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exit 1
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;;
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esac
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exit 0
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7
priv/templates/simplenode.template
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7
priv/templates/simplenode.template
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{variables, [{nodeid, "mynode"}]}.
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{file, "simplenode.reltool.config", "reltool.config"}.
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{file, "simplenode.erl.script", "overlay/erts-vsn/bin/erl"}.
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{file, "simplenode.nodetool", "overlay/erts-vsn/bin/nodetool"}.
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{file, "simplenode.runner", "overlay/bin/{{nodeid}}"}.
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{file, "simplenode.app.config", "overlay/etc/app.config"}.
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{file, "simplenode.vm.args", "overlay/etc/vm.args"}.
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21
priv/templates/simplenode.vm.args
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21
priv/templates/simplenode.vm.args
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@ -0,0 +1,21 @@
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## Name of the node
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-name {{nodeid}}@127.0.0.1
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## Cookie for distributed erlang
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-setcookie {{nodeid}}
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## Heartbeat management; auto-restarts VM if it dies or becomes unresponsive
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## (Disabled by default..use with caution!)
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##-heart
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## Enable kernel poll and a few async threads
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+K true
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+A 5
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## Increase number of concurrent ports/sockets
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-env ERL_MAX_PORTS 4096
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## Tweak GC to run more often
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-env ERL_FULLSWEEP_AFTER 10
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@ -27,6 +27,7 @@
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-module(rebar_templater).
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-export(['create-app'/2,
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'create-node'/2,
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create/2]).
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-include("rebar.hrl").
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@ -42,6 +43,11 @@
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rebar_config:set_global(template, "simpleapp"),
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create(Config, File).
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'create-node'(Config, File) ->
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%% Alias for create w/ template=simplenode
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rebar_config:set_global(template, "simplenode"),
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create(Config, File).
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create(_Config, _) ->
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%% Load a list of all the files in the escript -- cache it in the pdict
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%% since we'll potentially need to walk it several times over the course
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