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add lua function for update upstream server's weight #35

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add lua function for update upstream server's weight #35

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72 changes: 72 additions & 0 deletions src/ngx_http_lua_upstream_module.c
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Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,9 @@ static ngx_http_upstream_rr_peer_t *
ngx_http_lua_upstream_lookup_peer(lua_State *L);
static int ngx_http_lua_upstream_set_peer_down(lua_State * L);
static int ngx_http_lua_upstream_current_upstream_name(lua_State *L);
static int ngx_http_lua_upstream_set_peer_weight(lua_State * L);
static int ngx_http_lua_upstream_set_peer_current_weight(lua_State * L);
static int ngx_http_lua_upstream_set_peer_effective_weight(lua_State * L);


static ngx_http_module_t ngx_http_lua_upstream_ctx = {
Expand Down Expand Up @@ -102,6 +105,15 @@ ngx_http_lua_upstream_create_module(lua_State * L)
lua_pushcfunction(L, ngx_http_lua_upstream_current_upstream_name);
lua_setfield(L, -2, "current_upstream_name");

lua_pushcfunction(L, ngx_http_lua_upstream_set_peer_weight);
lua_setfield(L, -2, "set_peer_weight");

lua_pushcfunction(L, ngx_http_lua_upstream_set_peer_current_weight);
lua_setfield(L, -2, "set_peer_current_weight");

lua_pushcfunction(L, ngx_http_lua_upstream_set_peer_effective_weight);
lua_setfield(L, -2, "set_peer_effective_weight");

return 1;
}

Expand Down Expand Up @@ -352,6 +364,66 @@ ngx_http_lua_upstream_set_peer_down(lua_State * L)
return 1;
}

static int
ngx_http_lua_upstream_set_peer_weight(lua_State * L)
{
ngx_http_upstream_rr_peer_t *peer;

if (lua_gettop(L) != 4) {
return luaL_error(L, "exactly 4 arguments expected");
}

peer = ngx_http_lua_upstream_lookup_peer(L);
if (peer == NULL) {
return 2;
}

peer->weight = lua_tointeger(L, 4);

lua_pushboolean(L, 1);
return 1;
}

static int
ngx_http_lua_upstream_set_peer_current_weight(lua_State * L)
{
ngx_http_upstream_rr_peer_t *peer;

if (lua_gettop(L) != 4) {
return luaL_error(L, "exactly 4 arguments expected");
}

peer = ngx_http_lua_upstream_lookup_peer(L);
if (peer == NULL) {
return 2;
}

peer->current_weight = lua_tointeger(L, 4);

lua_pushboolean(L, 1);
return 1;
}

static int
ngx_http_lua_upstream_set_peer_effective_weight(lua_State * L)
{
ngx_http_upstream_rr_peer_t *peer;

if (lua_gettop(L) != 4) {
return luaL_error(L, "exactly 4 arguments expected");
}

peer = ngx_http_lua_upstream_lookup_peer(L);
if (peer == NULL) {
return 2;
}

peer->effective_weight = lua_tointeger(L, 4);

lua_pushboolean(L, 1);
return 1;
}


static ngx_http_upstream_rr_peer_t *
ngx_http_lua_upstream_lookup_peer(lua_State *L)
Expand Down