зеркало из https://github.com/microsoft/AMBROSIA.git
Update wire protocol doc (still unfinished) + tweak how runAmbrosia script traps errors
This commit is contained in:
Ryan Newton
Родитель
638d70ce67
Коммит
c2dfc69d37
|
|
@ -3,36 +3,53 @@ Client Protocol for AMBROSIA network participants
|
|||
=================================================
|
||||
|
||||
This document covers how a network endpoint should communicate with
|
||||
the AMBROSIA reliability coordinator assigned to it (typically located
|
||||
within the same physical machine).
|
||||
the AMBROSIA reliability coordinator assigned to it. The coordinator
|
||||
is located within the same physical machine/container and assumed to
|
||||
survive or fail with the application process.
|
||||
|
||||
Indeed, the coordinator could have been running inside the same
|
||||
process as the application, but it is designed to instead run in a
|
||||
separate process (and communicate via TCP/IP over a local socket) to
|
||||
be more language-agnostic.
|
||||
|
||||
Overview and Terminology
|
||||
------------------------
|
||||
|
||||
FINISHME
|
||||
Below we use the following terminology:
|
||||
|
||||
* Commit ID
|
||||
* Sequence ID
|
||||
* Committer ID - an arbitrary (32 bit) identifier for a communication
|
||||
endpoint (a service) in the network of running "immortals".
|
||||
|
||||
* Sequence ID - the (monotonically increasing) number of a log entry. Note that
|
||||
each logical immortal has its own log
|
||||
|
||||
* "Async/await" RPC - a classic notion of a *future*. These RPCs return a value back to the caller. Because AMBROSIA ensures reliability, they are semantically identical to function calls, without introducing new failure modes such as timeouts or disconnections.
|
||||
|
||||
* "Fire and Forget" RPC - launch a remote computation, but provide no information back to the caller. Note that even an async/await
|
||||
RPC with "void" return value exposes more than this, because the caller can ascertain when the remote RPC has been completely processed.
|
||||
* "Async/await" RPCs - are *futures*; they return a value back to the
|
||||
caller. Because AMBROSIA ensures reliability, they are semantically
|
||||
identical to function calls, without introducing new failure modes such as
|
||||
timeouts or disconnections.
|
||||
|
||||
* "Fire and Forget" RPCs - launch a remote computation, but provide no
|
||||
information back to the caller. Note that even an async/await RPC with
|
||||
"void" return value indicates more to the caller (namely, that the remote
|
||||
computation has completed).
|
||||
|
||||
Required Helper Functions
|
||||
-------------------------
|
||||
|
||||
FINISHME:
|
||||
In order to build the binary message formats described below, we assume that the
|
||||
new client software can access TCP sockets and additionally implements the
|
||||
following serialized datatypes.
|
||||
|
||||
Assumes TCP +
|
||||
* ZigZagInt - a zig-zag encoded variable size 32 bit signed integer
|
||||
* ZigZagLong - a zig-zag encoded variable size 64 bit signed integer
|
||||
* IntFixed - a 32 bit little endian number
|
||||
* LongFixed - a 64 bit little endian number
|
||||
|
||||
* WriteZigZagInt
|
||||
* WriteFixedInt
|
||||
* WriteZigZagLong
|
||||
* WriteFixedLong
|
||||
* CheckSum - FINISHME
|
||||
|
||||
These variable-length integers are in the same format used by, e.g.,
|
||||
[Protobufs](https://developers.google.com/protocol-buffers/docs/encoding).
|
||||
|
||||
* CheckSum
|
||||
|
||||
Message Formats
|
||||
---------------
|
||||
|
|
@ -43,7 +60,7 @@ Message Formats
|
|||
All information received from the reliability coordinator is in the form of a sequence of log records.
|
||||
Each log record has a 24 byte header, followed by the actual record contents. The header is as follows:
|
||||
|
||||
* Bytes [0-3]: The commit ID for the service, this should be constant for all records for the lifetime of the service, format IntFixed.
|
||||
* Bytes [0-3]: The committer ID for the service, this should be constant for all records for the lifetime of the service, format IntFixed.
|
||||
* Bytes [4-7]: The size of the whole log record, in bytes, including the header. The format is IntFixed
|
||||
* Bytes [8-15]: The check bytes to check the integrity of the log record. The format is LongFixed.
|
||||
* Bytes [16-23]: The log record sequence ID. Excluding records labeled with sequence ID “-1”, these should be in order. The format is LongFixed
|
||||
|
|
@ -58,8 +75,8 @@ The rest of the record is a sequence of messages, packed tightly, each with the
|
|||
All information sent to the reliability coordinator is in the form of a sequence of messages with the format specified above.
|
||||
Message types and associated data which may be sent to or received by services:
|
||||
|
||||
* 14 - TrimTo (RRN: INTERNAL!??!)
|
||||
* 13 - CountReplayableRPCBatchByte (RRN: INTERNAL!??!)
|
||||
* 14 - TrimTo (FINISHME - INTERNAL!??!)
|
||||
* 13 - CountReplayableRPCBatchByte (FINISHME - INTERNAL!??!)
|
||||
|
||||
* 12 – `UpgradeService` (Received): No data
|
||||
|
||||
|
|
@ -69,7 +86,12 @@ Message types and associated data which may be sent to or received by services:
|
|||
|
||||
* 9 – `InitialMessage` (Sent/Received): Data is a complete (incoming rpc) message which is given back to the service as the very first RPC message it ever receives. Used to bootstrap service start behavior.
|
||||
|
||||
* 8 – `Checkpoint` (Sent/Received): Data are the bytes corresponding to the serialized state of the service.
|
||||
* 8 – `Checkpoint` (Sent/Received): The payload is a single 64 bit number.
|
||||
That payload in turn is the size in bytes of a checkpoint itself, which is a
|
||||
binary blob that follows this message immediately (no additional header).
|
||||
The reason that checkpoints are not sent in the message payload directly is
|
||||
so that they can have a 64-bit instead of 32-bit length, in order to support
|
||||
large checkpoints.
|
||||
|
||||
* 5 – `RPCBatch` (Sent/Received): Data are a count of the number of RPC messages in the batch, followed by the corresponding number of RPC messages. Note that the count is in variable sized WriteInt format
|
||||
|
||||
|
|
@ -135,6 +157,7 @@ If performing an upgrade what-if test:
|
|||
|
||||
When a TakeCheckpoint message is received, no further messages may be processed until the state is serialized and sent in a checkpoint message. Note that the serialized state must include any unsent output messages which resulted from previous incoming calls. Those serialized unsent messages must follow the checkpoint message.
|
||||
|
||||
(RRN: What are the rules for SENDING!!)
|
||||
### Attach-before-send protocol
|
||||
|
||||
FINISHME...
|
||||
|
||||
(RRN: What is the ATTACH protocol??)
|
||||
|
|
|
|||
|
|
@ -1,9 +1,12 @@
|
|||
|
||||
# Put your -D variables here, e.g. -DDEBUG
|
||||
DEFINES= -DIPV4
|
||||
# Put your -D variables here:
|
||||
DEFINES ?=
|
||||
|
||||
EXTRA_DEFINES = -DIPV4
|
||||
# ^ TODO build everything twice for IPV6 vs IPV4.
|
||||
# TODOTODO fix it so that one compile can work for both.
|
||||
|
||||
ALL_DEFINES = $(DEFINES) $(EXTRA_DEFINES)
|
||||
|
||||
GNULIBS= -lpthread
|
||||
GNUOPTS= -pthread -O3
|
||||
|
|
@ -16,13 +19,16 @@ OBJS1= $(patsubst src/%.c,bin/static/%.o, $(SRCS) )
|
|||
|
||||
OBJS2= $(patsubst src/%.c,bin/shared/%.o, $(SRCS) )
|
||||
|
||||
COMP= gcc $(DEFINES) -I include/ $(GNUOPTS)
|
||||
COMP= gcc $(ALL_DEFINES) -I include/ $(GNUOPTS)
|
||||
LINK= gcc
|
||||
|
||||
LIBNAME=libambrosia
|
||||
|
||||
all: bin/$(LIBNAME).a bin/$(LIBNAME).so
|
||||
|
||||
debug:
|
||||
$(MAKE) DEFINES="-DAMBCLIENT_DEBUG" clean publish
|
||||
|
||||
bin/$(LIBNAME).a: $(OBJS1)
|
||||
ar rcs $@ $(OBJS1)
|
||||
|
||||
|
|
|
|||
|
|
@ -125,8 +125,18 @@ int zigzag_int_size(int32_t value);
|
|||
//------------------------------------------------------------------------------
|
||||
|
||||
#ifdef AMBCLIENT_DEBUG
|
||||
extern volatile int64_t amb_debug_lock;
|
||||
|
||||
extern volatile int64_t debug_lock;
|
||||
// Helper used only below
|
||||
static inline void amb_sleep_seconds(double n) {
|
||||
#ifdef _WIN32
|
||||
Sleep((int)(n * 1000));
|
||||
#else
|
||||
int64_t nanos = (int64_t)(10e9 * n);
|
||||
const struct timespec ts = {0, nanos};
|
||||
nanosleep(&ts, NULL);
|
||||
#endif
|
||||
}
|
||||
|
||||
static inline void amb_debug_log(const char *format, ...)
|
||||
{
|
||||
|
|
@ -134,14 +144,14 @@ static inline void amb_debug_log(const char *format, ...)
|
|||
va_start(args, format);
|
||||
amb_sleep_seconds((double)(rand()%1000) * 0.00001); // .01 - 10 ms
|
||||
#ifdef _WIN32
|
||||
while ( 1 == InterlockedCompareExchange64(&debug_lock, 1, 0) ) { }
|
||||
while ( 1 == InterlockedCompareExchange64(&amb_debug_lock, 1, 0) ) { }
|
||||
#else
|
||||
while ( 1 == __sync_val_compare_and_swap(&debug_lock, 1, 0) ) { }
|
||||
while ( 1 == __sync_val_compare_and_swap(&amb_debug_lock, 1, 0) ) { }
|
||||
#endif
|
||||
fprintf(amb_dbg_fd," [AMBCLIENT] ");
|
||||
vfprintf(amb_dbg_fd,format, args);
|
||||
fflush(amb_dbg_fd);
|
||||
debug_lock = 0;
|
||||
amb_debug_lock = 0;
|
||||
va_end(args);
|
||||
}
|
||||
#else
|
||||
|
|
|
|||
|
|
@ -2,7 +2,8 @@
|
|||
|
||||
|
||||
// Internal helper: try repeatedly on a socket until all bytes are sent.
|
||||
static inline void socket_send_all(int sock, const void* buf, size_t len, int flags) {
|
||||
static inline
|
||||
void socket_send_all(int sock, const void* buf, size_t len, int flags) {
|
||||
char* cur = (char*)buf;
|
||||
int remaining = len;
|
||||
while (remaining > 0) {
|
||||
|
|
@ -21,3 +22,18 @@ static inline void socket_send_all(int sock, const void* buf, size_t len, int fl
|
|||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static inline
|
||||
void print_hex_bytes(FILE* fd, char* ptr, int len) {
|
||||
const int limit = 100; // Only print this many:
|
||||
fprintf(fd,"0x");
|
||||
int j;
|
||||
for (j=0; j < len && j < limit; j++) {
|
||||
fprintf(fd,"%02hhx", (unsigned char)ptr[j]);
|
||||
if (j % 2 == 1)
|
||||
fprintf(fd," ");
|
||||
}
|
||||
if (j<len) fprintf(fd,"...");
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -50,7 +50,7 @@ const char* coordinator_host = "::1";
|
|||
#endif
|
||||
|
||||
#ifdef AMBCLIENT_DEBUG
|
||||
// volatile int64_t debug_lock = 0;
|
||||
volatile int64_t amb_debug_lock = 0;
|
||||
#endif
|
||||
|
||||
|
||||
|
|
@ -71,18 +71,6 @@ char* amb_get_error_string() {
|
|||
return strerror(errno);
|
||||
#endif
|
||||
}
|
||||
|
||||
void print_hex_bytes(FILE* fd, char* ptr, int len) {
|
||||
const int limit = 100; // Only print this many:
|
||||
fprintf(fd,"0x");
|
||||
int j;
|
||||
for (j=0; j < len && j < limit; j++) {
|
||||
fprintf(fd,"%02hhx", (unsigned char)ptr[j]);
|
||||
if (j % 2 == 1)
|
||||
fprintf(fd," ");
|
||||
}
|
||||
if (j<len) fprintf(fd,"...");
|
||||
}
|
||||
|
||||
void print_decimal_bytes(char* ptr, int len) {
|
||||
const int limit = 100; // Only print this many:
|
||||
|
|
@ -291,29 +279,6 @@ void attach_if_needed(char* dest, int destLen) {
|
|||
}
|
||||
}
|
||||
|
||||
/*
|
||||
// INEFFICIENT version that makes an extra copy:
|
||||
void send_message(char* buf, int len) {
|
||||
attach_if_needed(destName, ??); // Hard-coded global dest name.
|
||||
|
||||
// FIXME - LAME COPY to PREPEND header bytes!
|
||||
char* sendbuf = (char*)malloc(1 + 5 + destLen + 1 + 5 + 1 + len);
|
||||
char* newpos = amb_write_outgoing_rpc(sendbuf, destName, destLen, 0, TPUT_MSG_ID, 1, buf, len);
|
||||
|
||||
// FIXME: one system call per message!
|
||||
socket_send_all(g_to_immortal_coord, sendbuf, newpos-sendbuf, 0);
|
||||
#ifdef AMBCLIENT_DEBUG
|
||||
amb_debug_log("Sent %d byte message up to coordinator, argsLen %d...\n Hex: ", newpos-sendbuf, len);
|
||||
print_hex_bytes(amb_dbg_fd, sendbuf, newpos-sendbuf);
|
||||
fprintf(amb_dbg_fd,"\n Decimal: ");
|
||||
print_decimal_bytes(sendbuf, newpos-sendbuf); printf("\n");
|
||||
#endif
|
||||
free(sendbuf);
|
||||
}
|
||||
*/
|
||||
|
||||
|
||||
|
||||
|
||||
// Begin connect_sockets:
|
||||
// --------------------------------------------------
|
||||
|
|
|
|||
|
|
@ -20,7 +20,7 @@ LIBS= -L $(AMBROSIA_BINDIR) -l:libambrosia.a -lpthread
|
|||
LINK= gcc
|
||||
|
||||
all: service_v4.exe service_v6.exe
|
||||
dbg: service_dbg_v4.exe
|
||||
debug: service_dbg_v4.exe
|
||||
|
||||
service_temp.exe: service.c
|
||||
$(COMP) service.c -o service.o
|
||||
|
|
@ -29,10 +29,12 @@ service_temp.exe: service.c
|
|||
service_v4.exe: $(HEADERS) $(SRCS) service.c
|
||||
$(MAKE) DEFINES="-DIPV4" partclean service_temp.exe
|
||||
mv service_temp.exe $@
|
||||
ln -sf $@ service.exe
|
||||
|
||||
service_dbg_v4.exe: $(HEADERS) $(SRCS) service.c
|
||||
$(MAKE) DEFINES="-DAMBCLIENT_DEBUG -DIPV4" partclean service_temp.exe
|
||||
mv service_temp.exe $@
|
||||
ln -sf $@ service.exe
|
||||
|
||||
service_v6.exe: $(HEADERS) $(SRCS) service.c
|
||||
$(MAKE) DEFINES="-DIPV6" partclean service_temp.exe
|
||||
|
|
@ -42,7 +44,7 @@ partclean:
|
|||
rm -f service_temp.exe
|
||||
|
||||
clean:
|
||||
rm -f service_winsockv4.exe service_winsockv6.exe service_v4.exe service_v6.exe
|
||||
rm -f service_winsockv4.exe service_winsockv6.exe service_v4.exe service_v6.exe service_dbg_v4.exe serice_temp.exe
|
||||
rm -f \#* .\#* *~
|
||||
|
||||
.PHONY: lin clean partclean
|
||||
|
|
|
|||
|
|
@ -1,25 +0,0 @@
|
|||
#!/bin/bash
|
||||
set -xeuo pipefail
|
||||
|
||||
# Run both processes together in one script. This is intended to be
|
||||
# used within the Docker container built by Dockerfile.
|
||||
|
||||
# TODO: set up your credentials before calling this script:
|
||||
# export AZURE_STORAGE_CONN_STRING="..."
|
||||
|
||||
echo "Launching CRA worker"
|
||||
# strace dotnet "/ambrosia/ImmortalCoordinator/bin/Release/netcoreapp2.0/linux-x64/ImmortalCoordinator.dll" rrnjob 1500 2> /tmp/coord.log &
|
||||
dotnet "/ambrosia/ImmortalCoordinator/bin/Release/netcoreapp2.0/linux-x64/ImmortalCoordinator.dll" rrnjob 1500 &
|
||||
PID1=$!
|
||||
sleep 1
|
||||
# dotnet "/ambrosia/ImmortalCoordinator/bin/Release/netcoreapp2.0/linux-x64/ImmortalCoordinator.dll" rrnserver 2500 &
|
||||
# PID2=$!
|
||||
|
||||
# Lame, racy:
|
||||
sleep 7
|
||||
|
||||
echo "Proceeding on the assumption you saw \"Ready...\" above this line..."
|
||||
./service_v4.exe
|
||||
|
||||
wait $PID1
|
||||
# wait $PID2
|
||||
|
|
@ -11,10 +11,17 @@ set -euo pipefail
|
|||
|
||||
# source `dirname $0`/default_var_settings.sh
|
||||
|
||||
PORT1=49001
|
||||
PORT2=49002
|
||||
PORT3=49003
|
||||
PORT4=49004
|
||||
|
||||
# A number to add to all ports to avoid colliding or reusing recently
|
||||
# used ports.
|
||||
if ! [ ${PORTOFFSET:+defined} ]; then
|
||||
PORTOFFSET=0
|
||||
fi
|
||||
|
||||
PORT1=$((49001 + PORTOFFSET))
|
||||
PORT2=$((49002 + PORTOFFSET))
|
||||
PORT3=$((49003 + PORTOFFSET))
|
||||
PORT4=$((49004 + PORTOFFSET))
|
||||
|
||||
INSTANCE_PREFIX=""
|
||||
if [ $# -ne 0 ];
|
||||
|
|
@ -23,26 +30,32 @@ fi
|
|||
CLIENTNAME=${INSTANCE_PREFIX}nativeSend
|
||||
SERVERNAME=${INSTANCE_PREFIX}nativeRecv
|
||||
|
||||
_cleanup() {
|
||||
kill -TERM "$pid_server" 2>/dev/null || true
|
||||
}
|
||||
trap _cleanup TERM INT QUIT HUP
|
||||
|
||||
echo
|
||||
echo "--------------------------------------------------------------------------------"
|
||||
echo "Running NativeService with 4 processes all in this machine/container"
|
||||
echo " Instance: names $CLIENTNAME, $SERVERNAME"
|
||||
|
||||
echo "--------------------------------------------------------------------------------"
|
||||
echo
|
||||
|
||||
set -x
|
||||
time Ambrosia RegisterInstance -i $CLIENTNAME --rp $PORT1 --sp $PORT2 -l "./ambrosia_logs/"
|
||||
time Ambrosia RegisterInstance -i $SERVERNAME --rp $PORT3 --sp $PORT4 -l "./ambrosia_logs/"
|
||||
set +x
|
||||
|
||||
# AMBROSIA_IMMORTALCOORDINATOR_PORT=2500 runAmbrosiaService.sh ./service_v4.exe 0 $SERVERNAME $PORT1 $PORT2 24 1 20
|
||||
if ! [ ${SKIP_REGISTER:+defined} ]; then
|
||||
set -x
|
||||
time Ambrosia RegisterInstance -i $CLIENTNAME --rp $PORT1 --sp $PORT2 -l "./ambrosia_logs/"
|
||||
time Ambrosia RegisterInstance -i $SERVERNAME --rp $PORT3 --sp $PORT4 -l "./ambrosia_logs/"
|
||||
set +x
|
||||
fi
|
||||
|
||||
echo
|
||||
echo "NativeService: Launching Receiver"
|
||||
set -x
|
||||
AMBROSIA_INSTANCE_NAME=$SERVERNAME AMBROSIA_IMMORTALCOORDINATOR_PORT=1500 \
|
||||
AMBROSIA_INSTANCE_NAME=$SERVERNAME AMBROSIA_IMMORTALCOORDINATOR_PORT=$((1600 + PORTOFFSET)) \
|
||||
COORDTAG=CoordRecv AMBROSIA_IMMORTALCOORDINATOR_LOG=./recvr.log \
|
||||
runAmbrosiaService.sh ./service_v4.exe 1 $CLIENTNAME $PORT3 $PORT4 24 1 20 &
|
||||
runAmbrosiaService.sh ./service.exe 1 $CLIENTNAME $PORT3 $PORT4 24 1 20 &
|
||||
pid_server=$!
|
||||
set +x
|
||||
|
||||
|
|
@ -56,9 +69,9 @@ fi
|
|||
echo
|
||||
echo "NativeService: Launching Sender now:"
|
||||
set -x
|
||||
AMBROSIA_INSTANCE_NAME=$CLIENTNAME AMBROSIA_IMMORTALCOORDINATOR_PORT=2500 \
|
||||
AMBROSIA_INSTANCE_NAME=$CLIENTNAME AMBROSIA_IMMORTALCOORDINATOR_PORT=$((1601 + PORTOFFSET)) \
|
||||
COORDTAG=CoordSend AMBROSIA_IMMORTALCOORDINATOR_LOG=./sender.log \
|
||||
runAmbrosiaService.sh ./service_v4.exe 0 $SERVERNAME $PORT1 $PORT2 24 1 20
|
||||
runAmbrosiaService.sh ./service.exe 0 $SERVERNAME $PORT1 $PORT2 24 1 20
|
||||
set +x
|
||||
|
||||
echo
|
||||
|
|
|
|||
|
|
@ -37,8 +37,9 @@
|
|||
// TODO: remove internal dependency:
|
||||
#include "ambrosia/internal/spsc_rring.h"
|
||||
#include "ambrosia/client.h"
|
||||
#include "ambrosia/internal/bits.h"
|
||||
|
||||
// Extra utilities (print_hex_bytes, socket_send_all):
|
||||
#include "ambrosia/internal/bits.h"
|
||||
|
||||
// Library-level global variables:
|
||||
// --------------------------------------------------
|
||||
|
|
@ -100,21 +101,6 @@ int destLen; // Initialized below..
|
|||
// General helper functions
|
||||
// --------------------------------------------------------------------------------
|
||||
|
||||
#ifdef AMBCLIENT_DEBUG
|
||||
// DUPLICATED with ambrosia_client.
|
||||
void print_hex_bytes(FILE* fd, char* ptr, int len) {
|
||||
const int limit = 100; // Only print this many:
|
||||
fprintf(fd,"0x");
|
||||
int j;
|
||||
for (j=0; j < len && j < limit; j++) {
|
||||
fprintf(fd,"%02hhx", (unsigned char)ptr[j]);
|
||||
if (j % 2 == 1)
|
||||
fprintf(fd," ");
|
||||
}
|
||||
if (j<len) fprintf(fd,"...");
|
||||
}
|
||||
#endif
|
||||
|
||||
// Hacky busy-wait by thread-yielding for now:
|
||||
static inline void yield_thread() {
|
||||
#ifdef _WIN32
|
||||
|
|
@ -587,7 +573,7 @@ void* network_progress_thread( void* lpParam )
|
|||
} else if ( spin_tries == 0) {
|
||||
spin_tries = hot_spin_amount;
|
||||
// amb_debug_log(" network thread: yielding to wait...\n");
|
||||
#ifdef AMBCLIENT_DEBUG
|
||||
#ifdef AMBCLIENT_DEBUG
|
||||
sleep_seconds(0.5);
|
||||
sleep_seconds(0.05);
|
||||
#endif
|
||||
|
|
@ -681,6 +667,11 @@ int main(int argc, char** argv)
|
|||
fprintf(stderr, "\nERROR: Bytes-per-round should be bigger than max message size.\n");
|
||||
abort();
|
||||
}
|
||||
|
||||
if ( g_is_sender || destLen == 0)
|
||||
printf("We are running the SENDER\n");
|
||||
else
|
||||
printf("We are running the RECEIVER\n");
|
||||
|
||||
printf("Connecting to my coordinator on ports: %d (up), %d (down)\n", upport, downport);
|
||||
printf("The 'up' port we connect, and the 'down' one the coordinator connects to us.\n");
|
||||
|
|
|
|||
|
|
@ -83,19 +83,24 @@ fi
|
|||
tail_pid=""
|
||||
coord_pid=""
|
||||
app_pid=""
|
||||
keep_monitoring=""
|
||||
|
||||
_cleanup() {
|
||||
echo "$0: Exiting script (or caught signal)! Cleaning up."
|
||||
kill -TERM "$coord_pid" 2>/dev/null || true
|
||||
kill -TERM "$tail_pid" 2>/dev/null || true
|
||||
kill -TERM "$app_pid" 2>/dev/null || true
|
||||
_normal_cleanup() {
|
||||
kill -TERM "$coord_pid" 2>/dev/null || true
|
||||
kill -TERM "$tail_pid" 2>/dev/null || true
|
||||
kill -TERM "$app_pid" 2>/dev/null || true
|
||||
rm -f "$keep_monitoring" 2>/dev/null || true
|
||||
}
|
||||
|
||||
_unexpected_cleanup() {
|
||||
trap '' EXIT # some shells will call EXIT after the INT handler
|
||||
echo "$0: Exiting script abnormally! Cleaning up. ($1)"
|
||||
_normal_cleanup
|
||||
echo "$0: Done with cleanup."
|
||||
}
|
||||
|
||||
trap _cleanup EXIT
|
||||
# subsumed by exit? TERM INT HUP
|
||||
# what about QUIT?
|
||||
|
||||
trap _normal_cleanup EXIT
|
||||
trap _unexpected_cleanup TERM INT QUIT
|
||||
|
||||
function tag_stdin() {
|
||||
local MSG=$1
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче