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Moving request limit control to libunit.

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Introducting application graceful stop.  For now only used when application
process reach request limit value.

This closes #585 issue on GitHub.
This commit is contained in:
Max Romanov
2021-10-28 17:46:54 +03:00
parent 803e037302
commit bba97134e9
24 changed files with 273 additions and 248 deletions
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74
src/python/nxt_python_asgi.c
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@@ -33,11 +33,10 @@ static PyObject *nxt_py_asgi_create_address(nxt_unit_sptr_t *sptr, uint8_t len,
static PyObject *nxt_py_asgi_create_header(nxt_unit_field_t *f);
static PyObject *nxt_py_asgi_create_subprotocols(nxt_unit_field_t *f);
static int nxt_python_asgi_ready(nxt_unit_ctx_t *ctx);
static int nxt_py_asgi_add_port(nxt_unit_ctx_t *ctx, nxt_unit_port_t *port);
static int nxt_py_asgi_add_reader(nxt_unit_ctx_t *ctx, nxt_unit_port_t *port);
static void nxt_py_asgi_remove_port(nxt_unit_t *lib, nxt_unit_port_t *port);
static void nxt_py_asgi_remove_port(nxt_unit_t *lib, nxt_unit_ctx_t *ctx,
nxt_unit_port_t *port);
static void nxt_py_asgi_quit(nxt_unit_ctx_t *ctx);
static void nxt_py_asgi_shm_ack_handler(nxt_unit_ctx_t *ctx);
@@ -45,7 +44,6 @@ static PyObject *nxt_py_asgi_port_read(PyObject *self, PyObject *args);
static void nxt_python_asgi_done(void);
static PyObject *nxt_py_port_read;
static nxt_unit_port_t *nxt_py_shared_port;
static PyMethodDef nxt_py_port_read_method =
{"unit_port_read", nxt_py_asgi_port_read, METH_VARARGS, ""};
@@ -55,7 +53,6 @@ static nxt_python_proto_t nxt_py_asgi_proto = {
.ctx_data_free = nxt_python_asgi_ctx_data_free,
.startup = nxt_python_asgi_startup,
.run = nxt_python_asgi_run,
.ready = nxt_python_asgi_ready,
.done = nxt_python_asgi_done,
};
@@ -362,13 +359,6 @@ nxt_python_asgi_run(nxt_unit_ctx_t *ctx)
Py_DECREF(res);
nxt_py_asgi_remove_reader(ctx, nxt_py_shared_port);
nxt_py_asgi_remove_reader(ctx, ctx_data->port);
if (ctx_data->port != NULL) {
ctx_data->port = NULL;
}
nxt_py_asgi_lifespan_shutdown(ctx);
return NXT_UNIT_OK;
@@ -891,28 +881,10 @@ fail:
}
static int
nxt_python_asgi_ready(nxt_unit_ctx_t *ctx)
{
nxt_unit_port_t *port;
if (nxt_slow_path(nxt_py_shared_port == NULL)) {
return NXT_UNIT_ERROR;
}
port = nxt_py_shared_port;
nxt_unit_debug(ctx, "asgi_ready %d %p %p", port->in_fd, ctx, port);
return nxt_py_asgi_add_reader(ctx, port);
}
static int
nxt_py_asgi_add_port(nxt_unit_ctx_t *ctx, nxt_unit_port_t *port)
{
int nb;
nxt_py_asgi_ctx_data_t *ctx_data;
int nb;
if (port->in_fd == -1) {
return NXT_UNIT_OK;
@@ -929,16 +901,6 @@ nxt_py_asgi_add_port(nxt_unit_ctx_t *ctx, nxt_unit_port_t *port)
nxt_unit_debug(ctx, "asgi_add_port %d %p %p", port->in_fd, ctx, port);
if (port->id.id == NXT_UNIT_SHARED_PORT_ID) {
nxt_py_shared_port = port;
return NXT_UNIT_OK;
}
ctx_data = ctx->data;
ctx_data->port = port;
return nxt_py_asgi_add_reader(ctx, port);
}
@@ -1008,17 +970,16 @@ clean_fd:
static void
nxt_py_asgi_remove_port(nxt_unit_t *lib, nxt_unit_port_t *port)
nxt_py_asgi_remove_port(nxt_unit_t *lib, nxt_unit_ctx_t *ctx,
nxt_unit_port_t *port)
{
if (port->in_fd == -1) {
if (port->in_fd == -1 || ctx == NULL) {
return;
}
nxt_unit_debug(NULL, "asgi_remove_port %d %p", port->in_fd, port);
if (nxt_py_shared_port == port) {
nxt_py_shared_port = NULL;
}
nxt_py_asgi_remove_reader(ctx, port);
}
@@ -1032,27 +993,6 @@ nxt_py_asgi_quit(nxt_unit_ctx_t *ctx)
ctx_data = ctx->data;
if (nxt_py_shared_port != NULL) {
p = PyLong_FromLong(nxt_py_shared_port->in_fd);
if (nxt_slow_path(p == NULL)) {
nxt_unit_alert(NULL, "Python failed to create Long");
nxt_python_print_exception();
} else {
res = PyObject_CallFunctionObjArgs(ctx_data->loop_remove_reader,
p, NULL);
if (nxt_slow_path(res == NULL)) {
nxt_unit_alert(NULL, "Python failed to remove_reader");
nxt_python_print_exception();
} else {
Py_DECREF(res);
}
Py_DECREF(p);
}
}
p = PyLong_FromLong(0);
if (nxt_slow_path(p == NULL)) {
nxt_unit_alert(NULL, "Python failed to create Long");