aboutsummaryrefslogtreecommitdiffstats
path: root/priv/templates/extended_bin
blob: c87fcf94758921272431b6d52b1f4497cf21f3aa (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
#!/bin/sh

set -e

# http://erlang.org/doc/man/run_erl.html
# If defined, disables input and output flow control for the pty
# opend by run_erl. Useful if you want to remove any risk of accidentally
# blocking the flow control by using Ctrl-S (instead of Ctrl-D to detach),
# which can result in blocking of the entire Beam process, and in the case
# of running heart as supervisor even the heart process becomes blocked
# when writing log message to terminal, leaving the heart process unable
# to do its work.
RUN_ERL_DISABLE_FLOWCNTRL=${RUN_ERL_DISABLE_FLOWCNTRL:-true}
export $RUN_ERL_DISABLE_FLOWCNTRL

if [ "$TERM" = "dumb" -o -z "$TERM" ]; then
  export TERM=screen
fi

SCRIPT=$(readlink -f $0 || true)
[ -z $SCRIPT ] && SCRIPT=$0
SCRIPT_DIR="$(cd `dirname "$SCRIPT"` && pwd -P)"
RELEASE_ROOT_DIR="$(cd "$SCRIPT_DIR/.." && pwd -P)"
# Make the value available to variable substitution calls below
export REL_NAME="{{ rel_name }}"
REL_VSN="{{ rel_vsn }}"
ERTS_VSN="{{ erts_vsn }}"
CODE_LOADING_MODE="${CODE_LOADING_MODE:-embedded}"
REL_DIR="$RELEASE_ROOT_DIR/releases/$REL_VSN"
ERL_OPTS="{{ erl_opts }}"
RUNNER_LOG_DIR="${RUNNER_LOG_DIR:-$RELEASE_ROOT_DIR/log}"

# start/stop/install/upgrade pre/post hooks
PRE_START_HOOKS="{{ pre_start_hooks }}"
POST_START_HOOKS="{{ post_start_hooks }}"
PRE_STOP_HOOKS="{{ pre_stop_hooks }}"
POST_STOP_HOOKS="{{ post_stop_hooks }}"
PRE_INSTALL_UPGRADE_HOOKS="{{ pre_install_upgrade_hooks }}"
POST_INSTALL_UPGRADE_HOOKS="{{ post_install_upgrade_hooks }}"

relx_usage() {
    command="$1"

    case "$command" in
        unpack)
            echo "Usage: $REL_NAME unpack [VERSION]"
            echo "Unpacks a release package VERSION, it assumes that this"
            echo "release package tarball has already been deployed at one"
            echo "of the following locations:"
            echo "      releases/<relname>-<version>.tar.gz"
            echo "      releases/<version>/<relname>-<version>.tar.gz"
            echo "      releases/<version>/<relname>.tar.gz"
            ;;
        install)
            echo "Usage: $REL_NAME install [VERSION]"
            echo "Installs a release package VERSION, it assumes that this"
            echo "release package tarball has already been deployed at one"
            echo "of the following locations:"
            echo "      releases/<relname>-<version>.tar.gz"
            echo "      releases/<version>/<relname>-<version>.tar.gz"
            echo "      releases/<version>/<relname>.tar.gz"
            echo ""
            echo "     --no-permanent   Install release package VERSION but"
            echo "                      don't make it permanent"
            ;;
        uninstall)
            echo "Usage: $REL_NAME uninstall [VERSION]"
            echo "Uninstalls a release VERSION, it will only accept"
            echo "versions that are not currently in use"
            ;;
        upgrade)
            echo "Usage: $REL_NAME upgrade [VERSION]"
            echo "Upgrades the currently running release to VERSION, it assumes"
            echo "that a release package tarball has already been deployed at one"
            echo "of the following locations:"
            echo "      releases/<relname>-<version>.tar.gz"
            echo "      releases/<version>/<relname>-<version>.tar.gz"
            echo "      releases/<version>/<relname>.tar.gz"
            echo ""
            echo "     --no-permanent   Install release package VERSION but"
            echo "                      don't make it permanent"
            ;;
        downgrade)
            echo "Usage: $REL_NAME downgrade [VERSION]"
            echo "Downgrades the currently running release to VERSION, it assumes"
            echo "that a release package tarball has already been deployed at one"
            echo "of the following locations:"
            echo "      releases/<relname>-<version>.tar.gz"
            echo "      releases/<version>/<relname>-<version>.tar.gz"
            echo "      releases/<version>/<relname>.tar.gz"
            echo ""
            echo "     --no-permanent   Install release package VERSION but"
            echo "                      don't make it permanent"
            ;;
        *)
            echo "Usage: $REL_NAME {start|start_boot <file>|foreground|stop|restart|reboot|pid|ping|console|console_clean|console_boot <file>|attach|remote_console|upgrade|downgrade|install|uninstall|versions|escript|rpc|rpcterms|eval}"
            ;;
    esac
}

find_erts_dir() {
    __erts_dir="$RELEASE_ROOT_DIR/erts-$ERTS_VSN"
    if [ -d "$__erts_dir" ]; then
        ERTS_DIR="$__erts_dir";
        ROOTDIR="$RELEASE_ROOT_DIR"
    else
        __erl="$(which erl)"
        code="io:format(\"~s\", [code:root_dir()]), halt()."
        __erl_root="$("$__erl" -noshell -eval "$code")"
        ERTS_DIR="$__erl_root/erts-$ERTS_VSN"
        ROOTDIR="$__erl_root"
    fi
}

# Get node pid
relx_get_pid() {
    if output="$(relx_nodetool rpcterms os getpid)"
    then
        echo "$output" | sed -e 's/"//g'
        return 0
    else
        echo "$output"
        return 1
    fi
}

relx_get_nodename() {
    id="longname$(relx_gen_id)-${NAME}"
    "$BINDIR/erl" -boot start_clean \
        -eval '[H]=tl(string:tokens(atom_to_list(node()),"@")), io:format("~s~n",[H]), halt()' \
        -noshell ${NAME_TYPE} $id
}

# Connect to a remote node
relx_rem_sh() {
    # Generate a unique id used to allow multiple remsh to the same node
    # transparently
    id="remsh$(relx_gen_id)-${NAME}"

    # Get the node's ticktime so that we use the same thing.
    TICKTIME="$(relx_nodetool rpcterms net_kernel get_net_ticktime)"

    # Setup remote shell command to control node
    exec "$BINDIR/erl" "$NAME_TYPE" "$id" -remsh "$NAME" -boot start_clean \
         -boot_var ERTS_LIB_DIR "$ERTS_LIB_DIR" \
         -setcookie "$COOKIE" -hidden -kernel net_ticktime $TICKTIME
}

# Generate a random id
relx_gen_id() {
    od -t x -N 4 /dev/urandom | head -n1 | awk '{print $2}'
}

# Control a node
relx_nodetool() {
    command="$1"; shift

    "$ERTS_DIR/bin/escript" "$ROOTDIR/bin/nodetool" "$NAME_TYPE" "$NAME" \
                                -setcookie "$COOKIE" "$command" $@
}

# Run an escript in the node's environment
relx_escript() {
    shift; scriptpath="$1"; shift
    export RELEASE_ROOT_DIR

    "$ERTS_DIR/bin/escript" "$ROOTDIR/$scriptpath" $@
}

# Output a start command for the last argument of run_erl
relx_start_command() {
    printf "exec \"%s\" \"%s\"" "$RELEASE_ROOT_DIR/bin/$REL_NAME" \
           "$START_OPTION"
}

relx_get_code_paths() {
    code="{ok, [{release,_,_,Apps}]} = file:consult(\"$REL_DIR/$REL_NAME.rel\"),"\
"lists:foreach(fun(A) ->"\
"   io:fwrite(\"$ROOTDIR/lib/~p-~s/ebin \", [element(1, A), element(2, A)]) "\
"end, Apps),"\
"halt()."

    "$BINDIR/erl" -noshell -boot start_clean -eval "$code"
}

make_out_file_path() {
    # Use output directory provided in the RELX_OUT_FILE_PATH environment variable
    # (default to the current location of vm.args and sys.config)
    DIR=$(dirname $1)
    [ -d "${RELX_OUT_FILE_PATH}" ] && DIR="${RELX_OUT_FILE_PATH}"
    FILE=$(basename $1)
    IN="${DIR}/${FILE}"

    PFX=$(echo $IN   | awk '{sub(/\.[^.]+$/, "", $0)}1')
    SFX=$(echo $FILE | awk -F . '{if (NF>1) print $NF}')
    echo "${PFX}.${NAME}.${SFX}"
}

# Replace environment variables
replace_os_vars() {
    awk '{
        while(match($0,"[$]{[^}]*}")) {
            var=substr($0,RSTART+2,RLENGTH -3)
            gsub("[$]{"var"}",ENVIRON[var])
        }
    }1' < "$1" > "$2"
}

add_path() {
    # Use $CWD/$1 if exists, otherwise releases/VSN/$1
    IN_FILE_PATH=$2
    if [ -z "$IN_FILE_PATH" ]; then
        if [ -f "$RELEASE_ROOT_DIR/$1" ]; then
            IN_FILE_PATH="$RELEASE_ROOT_DIR/$1"
        else
            IN_FILE_PATH="$REL_DIR/$1"
        fi
    fi
    echo $IN_FILE_PATH
}

check_replace_os_vars() {
    IN_FILE_PATH=$(add_path $1 $2)
    OUT_FILE_PATH="$IN_FILE_PATH"
    ORIG_FILE_PATH="$IN_FILE_PATH.orig"
    if [ $RELX_REPLACE_OS_VARS ]; then
        # Create a new file in the same location as original
        OUT_FILE_PATH=$(make_out_file_path $IN_FILE_PATH)
        # If vm.args.orig or sys.config.orig is present then use that
        if [ -f "$ORIG_FILE_PATH" ]; then
           IN_FILE_PATH="$ORIG_FILE_PATH"
        fi

        # apply the environment variable substitution to $IN_FILE_PATH
        # the result is saved to $OUT_FILE_PATH
        replace_os_vars "$IN_FILE_PATH" "$OUT_FILE_PATH"
    else
        # If vm.arg.orig or sys.config.orig is present then use that
        if [ -f "$ORIG_FILE_PATH" ]; then
           OUT_FILE_PATH="$ORIG_FILE_PATH"
        fi
    fi
    echo $OUT_FILE_PATH
}

relx_run_hooks() {
    HOOKS=$1
    for hook in $HOOKS
    do
        # the scripts arguments at this point are separated
        # from each other by | , we now replace these
        # by empty spaces and give them to the `set`
        # command in order to be able to extract them
        # separately
        set `echo "$hook" | sed -e 's/|/ /g'`
        HOOK_SCRIPT=$1; shift
        # all hook locations are expected to be
        # relative to the start script location
        [ "$SCRIPT_DIR/$HOOK_SCRIPT" ] && . "$SCRIPT_DIR/$HOOK_SCRIPT" $@
    done
}

VMARGS_PATH=$(add_path vm.args $VMARGS_PATH)
# Extract the target node name from node.args
NAME_ARG=$(egrep '^-s?name' "$VMARGS_PATH" || true)
# Perform replacement of variables in ${NAME_ARG}
NAME_ARG=$(eval echo "${NAME_ARG}")

if [ -z "$NAME_ARG" ]; then
    echo "vm.args needs to have either -name or -sname parameter."
    exit 1
fi

# Extract the name type and name from the NAME_ARG for REMSH
NAME_TYPE="$(echo "$NAME_ARG" | awk '{print $1}')"
NAME="$(echo "$NAME_ARG" | awk '{print $2}')"

# User can specify an sname without @hostname
# This will fail when creating remote shell
# So here we check for @ and add @hostname if missing
case "${NAME}" in
    *@*) ;;                             # Nothing to do
    *)   NAME=${NAME}@$(hostname -s);;  # Add @hostname
esac

# Export the variable so that it's available in the 'eval' calls
export NAME

VMARGS_PATH=$(check_replace_os_vars vm.args $VMARGS_PATH)
RELX_CONFIG_PATH=$(check_replace_os_vars sys.config $RELX_CONFIG_PATH)

# Make sure log directory exists
mkdir -p "$RUNNER_LOG_DIR"

PIPE_DIR="${PIPE_DIR:-/tmp/erl_pipes/$NAME/}"

# Extract the target cookie
COOKIE_ARG="$(grep '^-setcookie' "$VMARGS_PATH" || true)"
DEFAULT_COOKIE_FILE="$HOME/.erlang.cookie"
if [ -z "$COOKIE_ARG" ]; then
    if [ -f "$DEFAULT_COOKIE_FILE" ]; then
        COOKIE="$(cat $DEFAULT_COOKIE_FILE)"
    else
        echo "vm.args needs to have a -setcookie, or $DEFAULT_COOKIE_FILE (its permission must be 400) is required."
        exit 1
    fi
else
    # Extract cookie name from COOKIE_ARG
    COOKIE="$(echo "$COOKIE_ARG" | awk '{print $2}')"
fi

find_erts_dir
export ROOTDIR="$RELEASE_ROOT_DIR"
export BINDIR="$ERTS_DIR/bin"
export EMU="beam"
export PROGNAME="erl"
export LD_LIBRARY_PATH="$ERTS_DIR/lib:$LD_LIBRARY_PATH"
ERTS_LIB_DIR="$(dirname "$ERTS_DIR")/lib"

cd "$ROOTDIR"

# Check the first argument for instructions
case "$1" in
    start|start_boot)

        # Make sure there is not already a node running
        #RES=`$NODETOOL ping`
        #if [ "$RES" = "pong" ]; then
        #    echo "Node is already running!"
        #    exit 1
        #fi
        # Save this for later.
        CMD=$1
        case "$1" in
            start)
                shift
                START_OPTION="console"
                HEART_OPTION="start"
                ;;
            start_boot)
                shift
                START_OPTION="console_boot"
                HEART_OPTION="start_boot"
                ;;
        esac
        RUN_PARAM="$@"

        # Set arguments for the heart command
        set -- "$SCRIPT_DIR/$REL_NAME" "$HEART_OPTION"
        [ "$RUN_PARAM" ] && set -- "$@" "$RUN_PARAM"

        # Export the HEART_COMMAND
        HEART_COMMAND="$RELEASE_ROOT_DIR/bin/$REL_NAME $CMD"
        export HEART_COMMAND

        mkdir -p "$PIPE_DIR"

        relx_run_hooks "$PRE_START_HOOKS"
        "$BINDIR/run_erl" -daemon "$PIPE_DIR" "$RUNNER_LOG_DIR" \
                          "$(relx_start_command)"
        relx_run_hooks "$POST_START_HOOKS"
        ;;

    stop)
        relx_run_hooks "$PRE_STOP_HOOKS"
        # Wait for the node to completely stop...
        PID="$(relx_get_pid)"
        if ! relx_nodetool "stop"; then
            exit 1
        fi
        while $(kill -s 0 "$PID" 2>/dev/null);
        do
            sleep 1
        done
        relx_run_hooks "$POST_STOP_HOOKS"
        ;;

    restart)
        ## Restart the VM without exiting the process
        if ! relx_nodetool "restart"; then
            exit 1
        fi
        ;;

    reboot)
        ## Restart the VM completely (uses heart to restart it)
        if ! relx_nodetool "reboot"; then
            exit 1
        fi
        ;;

    pid)
        ## Get the VM's pid
        if ! relx_get_pid; then
            exit 1
        fi
        ;;

    ping)
        ## See if the VM is alive
        if ! relx_nodetool "ping"; then
            exit 1
        fi
        ;;

    escript)
        ## Run an escript under the node's environment
        if ! relx_escript $@; then
            exit 1
        fi
        ;;

    attach)
        # Make sure a node IS running
        if ! relx_nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift
        exec "$BINDIR/to_erl" "$PIPE_DIR"
        ;;

    remote_console)
        # Make sure a node IS running
        if ! relx_nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift
        relx_rem_sh
        ;;

    upgrade|downgrade|install|unpack|uninstall)
        if [ -z "$2" ]; then
            echo "Missing version argument"
            echo "Usage: $REL_NAME $1 {version}"
            exit 1
        fi

        COMMAND="$1"; shift

        # Make sure a node IS running
        if ! relx_nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        relx_run_hooks "$PRE_INSTALL_UPGRADE_HOOKS"

        exec "$BINDIR/escript" "$ROOTDIR/bin/install_upgrade.escript" \
             "$COMMAND" "{'$REL_NAME', \"$NAME_TYPE\", '$NAME', '$COOKIE'}" "$@"

        relx_run_hooks "$POST_INSTALL_UPGRADE_HOOKS"
        ;;

    versions)
        # Make sure a node IS running
        if ! relx_nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        COMMAND="$1"; shift

        exec "$BINDIR/escript" "$ROOTDIR/bin/install_upgrade.escript" \
             "versions" "{'$REL_NAME', \"$NAME_TYPE\", '$NAME', '$COOKIE'}" "$@"
        ;;

    console|console_clean|console_boot|foreground)
        __code_paths=""
        FOREGROUNDOPTIONS=""
        # .boot file typically just $REL_NAME (ie, the app name)
        # however, for debugging, sometimes start_clean.boot is useful.
        # For e.g. 'setup', one may even want to name another boot script.
        case "$1" in
            console)
                if [ -f "$REL_DIR/$REL_NAME.boot" ]; then
                  BOOTFILE="$REL_DIR/$REL_NAME"
                else
                  BOOTFILE="$REL_DIR/start"
                fi
                ;;
            foreground)
                # start up the release in the foreground for use by runit
                # or other supervision services
                if [ -f "$REL_DIR/$REL_NAME.boot" ]; then
                  BOOTFILE="$REL_DIR/$REL_NAME"
                else
                  BOOTFILE="$REL_DIR/start"
                fi
                FOREGROUNDOPTIONS="-noshell -noinput +Bd"
                ;;
            console_clean)
                __code_paths=$(relx_get_code_paths)
                BOOTFILE="$ROOTDIR/bin/start_clean"
                ;;
            console_boot)
                shift
                BOOTFILE="$1"
                shift
                ;;
        esac
        # Setup beam-required vars
        EMU="beam"
        PROGNAME="${0#*/}"

        export EMU
        export PROGNAME

        # Store passed arguments since they will be erased by `set`
        ARGS="$@"

        # Build an array of arguments to pass to exec later on
        # Build it here because this command will be used for logging.
        set -- "$BINDIR/erlexec" $FOREGROUNDOPTIONS \
            -boot "$BOOTFILE" -mode "$CODE_LOADING_MODE" \
            -boot_var ERTS_LIB_DIR "$ERTS_LIB_DIR" \
            -config "$RELX_CONFIG_PATH" \
            -args_file "$VMARGS_PATH" \
            -pa ${__code_paths}

        # Dump environment info for logging purposes
        echo "Exec: $@" -- ${1+$ARGS}
        echo "Root: $ROOTDIR"

        # Log the startup
        echo "$RELEASE_ROOT_DIR"
        logger -t "$REL_NAME[$$]" "Starting up"

        # Start the VM
        exec "$@" -- ${1+$ARGS}
        ;;
    rpc)
        # Make sure a node IS running
        if ! relx_nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift

        relx_nodetool rpc $@
        ;;
    rpcterms)
        # Make sure a node IS running
        if ! relx_nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift

        relx_nodetool rpcterms $@
        ;;
    eval)
        # Make sure a node IS running
        if ! relx_nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift
        relx_nodetool "eval" $@
        ;;
    help)
        if [ -z "$2" ]; then
            relx_usage
            exit 1
        fi

        TOPIC="$2"; shift
        relx_usage $TOPIC
        ;;
    *)
        relx_usage
        exit 1
        ;;
esac

exit 0