static int inject_message_analysis(lua_State *lua)
{
luaL_checktype(lua, 1, LUA_TTABLE);
lsb_lua_sandbox *lsb = lua_touserdata(lua, lua_upvalueindex(1));
if (NULL == lsb) {
return luaL_error(lua, "%s() invalid lightuserdata", im_func_name);
}
lsb_heka_sandbox *hsb = lsb_get_parent(lsb);
lua_pushstring(lua, hsb->name);
lua_setfield(lua, 1, LSB_LOGGER);
lua_pushstring(lua, hsb->hostname);
lua_setfield(lua, 1, LSB_HOSTNAME);
if (heka_encode_message_table(lsb, 1)) {
return luaL_error(lua, "%s() failed: %s", im_func_name, lsb_get_error(lsb));
}
size_t output_len = 0;
const char *output = lsb_get_output(lsb, &output_len);
if (hsb->cb.aim(hsb->parent, output, output_len) != 0) {
return luaL_error(lua, "%s() failed: rejected by the callback",
im_func_name);
}
++hsb->stats.im_cnt;
hsb->stats.im_bytes += output_len;
return 0;
}
int heka_encode_message(lua_State *lua)
{
int n = lua_gettop(lua);
bool framed = false;
switch (n) {
case 2:
luaL_checktype(lua, 2, LUA_TBOOLEAN);
framed = lua_toboolean(lua, 2);
// fall thru
case 1:
luaL_checktype(lua, 1, LUA_TTABLE);
break;
default:
return luaL_argerror(lua, n, "incorrect number of arguments");
}
lsb_lua_sandbox *lsb = lua_touserdata(lua, lua_upvalueindex(1));
if (!lsb) {
return luaL_error(lua, "encode_message() invalid upvalueindex");
}
lsb_heka_sandbox *hsb = lsb_get_parent(lsb);
set_missing_headers(lua, 1, hsb);
lsb->output.pos = 0;
lsb_err_value ret = heka_encode_message_table(lsb, 1);
if (ret) {
const char *err = lsb_get_error(lsb);
if (strlen(err) == 0) err = ret;
return luaL_error(lua, "encode_message() failed: %s", err);
}
size_t len = 0;
const char *output = lsb_get_output(lsb, &len);
lsb->usage[LSB_UT_OUTPUT][LSB_US_CURRENT] = len;
if (framed) {
char header[14] = "\x1e\x00\x08"; // up to 10 varint bytes and a \x1f
int hlen = lsb_pb_output_varint(header + 3, len) + 1;
lsb->usage[LSB_UT_OUTPUT][LSB_US_CURRENT] = len + hlen + LSB_HDR_FRAME_SIZE;
header[1] = (char)hlen;
header[hlen + 2] = '\x1f';
luaL_Buffer b;
luaL_buffinit(lua, &b);
luaL_addlstring(&b, header, hlen + LSB_HDR_FRAME_SIZE);
luaL_addlstring(&b, output, len);
luaL_pushresult(&b);
} else {
lua_pushlstring(lua, output, len);
}
if (lsb->usage[LSB_UT_OUTPUT][LSB_US_CURRENT]
> lsb->usage[LSB_UT_OUTPUT][LSB_US_MAXIMUM]) {
lsb->usage[LSB_UT_OUTPUT][LSB_US_MAXIMUM] =
lsb->usage[LSB_UT_OUTPUT][LSB_US_CURRENT];
}
return 1;
}
static int inject_payload(lua_State *lua)
{
static const char *default_type = "txt";
lsb_lua_sandbox *lsb = lua_touserdata(lua, lua_upvalueindex(1));
if (!lsb) {
return luaL_error(lua, "%s invalid lightuserdata", __FUNCTION__);
}
int n = lua_gettop(lua);
if (n > 2) {
lsb_output(lsb, 3, n, 1);
lua_pop(lua, n - 2);
}
size_t len = 0;
const char *output = lsb_get_output(lsb, &len);
if (!len) return 0;
if (n > 0) {
if (lua_type(lua, 1) != LUA_TSTRING) {
return luaL_error(lua, "%s() payload_type argument must be a string",
__FUNCTION__);
}
}
if (n > 1) {
if (lua_type(lua, 2) != LUA_TSTRING) {
return luaL_error(lua, "%s() payload_name argument must be a string",
__FUNCTION__);
}
}
// build up a heka message table
lua_createtable(lua, 0, 2); // message
lua_createtable(lua, 0, 2); // Fields
if (n > 0) {
lua_pushvalue(lua, 1);
} else {
lua_pushstring(lua, default_type);
}
lua_setfield(lua, -2, "payload_type");
if (n > 1) {
lua_pushvalue(lua, 2);
lua_setfield(lua, -2, "payload_name");
}
lua_setfield(lua, -2, LSB_FIELDS);
lua_pushstring(lua, "inject_payload");
lua_setfield(lua, -2, LSB_TYPE);
lua_pushlstring(lua, output, len);
lua_setfield(lua, -2, LSB_PAYLOAD);
if (lua_gettop(lua) > 1) lua_replace(lua, 1);
inject_message_analysis(lua);
return 0;
}
static int inject_message(lua_State* L)
{
static unsigned char header[14];
void* luserdata = lua_touserdata(L, lua_upvalueindex(1));
if (NULL == luserdata) {
return luaL_error(L, "inject_message() invalid lightuserdata");
}
lua_sandbox* lsb = (lua_sandbox*)luserdata;
hs_analysis_plugin* p = (hs_analysis_plugin*)lsb_get_parent(lsb);
if (lua_type(L, 1) == LUA_TTABLE) {
lua_pushstring(L, p->sb->name);
lua_setfield(L, 1, "Logger");
lua_pushstring(L, p->at->plugins->cfg->hostname);
lua_setfield(L, 1, "Hostname");
lua_pushinteger(L, p->at->plugins->cfg->pid);
lua_setfield(L, 1, "Pid");
}
if (lsb_output_protobuf(lsb, 1, 0) != 0) {
return luaL_error(L, "inject_message() could not encode protobuf - %s",
lsb_get_error(lsb));
}
size_t output_len = 0;
const char* output = lsb_get_output(lsb, &output_len);
pthread_mutex_lock(&p->at->plugins->output.lock);
int len = hs_write_varint(header + 3, output_len);
int tlen = 4 + len + output_len;
++p->sb->stats.im_cnt;
p->sb->stats.im_bytes += tlen;
header[0] = 0x1e;
header[1] = (char)(len + 1);
header[2] = 0x08;
header[3 + len] = 0x1f;
fwrite(header, 4 + len, 1, p->at->plugins->output.fh);
fwrite(output, output_len, 1, p->at->plugins->output.fh);
p->at->plugins->output.offset += tlen;
if (p->at->plugins->output.offset >= (size_t)p->at->plugins->cfg->output_size) {
++p->at->plugins->output.id;
hs_open_output_file(&p->at->plugins->output);
}
pthread_mutex_unlock(&p->at->plugins->output.lock);
return 0;
}
int write_output(lua_State* lua)
{
static const char* default_type = "txt";
// static const char* default_name = "";
void* luserdata = lua_touserdata(lua, lua_upvalueindex(1));
if (NULL == luserdata) {
luaL_error(lua, "write() invalid lightuserdata");
}
lua_sandbox* lsb = (lua_sandbox*)luserdata;
// void* ud = NULL;
const char* type = default_type;
// const char* name = default_name;
switch (lua_gettop(lua)) {
case 0:
break;
case 2:
// name = luaL_checkstring(lua, 2);
// fallthru
case 1:
switch (lua_type(lua, 1)) {
case LUA_TSTRING:
type = lua_tostring(lua, 1);
if (strlen(type) == 0) type = default_type;
break;
case LUA_TTABLE:
type = "";
if (lsb_output_protobuf(lsb, 1, 0) != 0) {
luaL_error(lua, "write() cound not encode protobuf - %s",
lsb_get_error(lsb));
}
break;
case LUA_TUSERDATA:
type = lsb_output_userdata(lsb, 1, 0);
break;
default:
luaL_typerror(lua, 1, "string, table, or circular_buffer");
break;
}
break;
default:
luaL_error(lua, "write() takes a maximum of 2 arguments");
break;
}
written_data = lsb_get_output(lsb, &written_data_len);
return 0;
}
static int inject_message_input(lua_State *lua)
{
lsb_lua_sandbox *lsb = lua_touserdata(lua, lua_upvalueindex(1));
if (NULL == lsb) {
return luaL_error(lua, "%s() invalid lightuserdata", im_func_name);
}
const char *scp = NULL;
double ncp = NAN;
int t = lua_type(lua, 2);
switch (t) {
case LUA_TNUMBER:
ncp = lua_tonumber(lua, 2);
break;
case LUA_TSTRING:
scp = lua_tostring(lua, 2);
break;
case LUA_TNONE:
case LUA_TNIL:
break;
default:
return luaL_error(lua, "%s() unsupported checkpoint type: %s", im_func_name,
lua_typename(lua, t));
}
lsb_const_string output;
t = lua_type(lua, 1);
switch (t) {
case LUA_TUSERDATA:
{
heka_stream_reader *hsr = luaL_checkudata(lua, 1,
mozsvc_heka_stream_reader);
if (hsr->msg.raw.s) {
output.len = hsr->msg.raw.len;
output.s = hsr->msg.raw.s;
} else {
return luaL_error(lua, "%s() attempted to inject a nil message",
im_func_name);
}
}
break;
case LUA_TSTRING:
{
lsb_heka_message m;
lsb_init_heka_message(&m, 8);
output.s = lua_tolstring(lua, 1, &output.len);
bool ok = lsb_decode_heka_message(&m, output.s, output.len, NULL);
lsb_free_heka_message(&m);
if (!ok) {
return luaL_error(lua, "%s() attempted to inject a invalid protobuf "
"string", im_func_name);
}
}
break;
case LUA_TTABLE:
if (heka_encode_message_table(lsb, 1)) {
const char *err = lsb_get_error(lsb);
if (strlen(err) == 0) err = "exceeded output_limit";
return luaL_error(lua, "%s() failed: %s", im_func_name, err);
}
output.len = 0;
output.s = lsb_get_output(lsb, &output.len);
break;
default:
return luaL_error(lua, "%s() unsupported message type: %s",
im_func_name, lua_typename(lua, t));
}
lsb_heka_sandbox *hsb = lsb_get_parent(lsb);
if (hsb->cb.iim(hsb->parent, output.s, output.len, ncp, scp) != 0) {
return luaL_error(lua, "%s() failed: rejected by the callback",
im_func_name);
}
++hsb->stats.im_cnt;
hsb->stats.im_bytes += output.len;
return 0;
}
static int inject_payload(lua_State* lua)
{
static const char* default_type = "txt";
static const char* func_name = "inject_payload";
void* luserdata = lua_touserdata(lua, lua_upvalueindex(1));
if (NULL == luserdata) {
return luaL_error(lua, "%s invalid lightuserdata", func_name);
}
lua_sandbox* lsb = (lua_sandbox*)luserdata;
int n = lua_gettop(lua);
if (n > 2) {
lsb_output(lsb, 3, n, 1);
lua_pop(lua, n - 2);
}
size_t len = 0;
const char* output = lsb_get_output(lsb, &len);
if (!len) return 0;
if (n > 0) {
if (lua_type(lua, 1) != LUA_TSTRING) {
return luaL_error(lua, "%s() payload_type argument must be a string",
func_name);
}
}
if (n > 1) {
if (lua_type(lua, 2) != LUA_TSTRING) {
return luaL_error(lua, "%s() payload_name argument must be a string",
func_name);
}
}
// build up a heka message table
lua_createtable(lua, 0, 2); // message
lua_createtable(lua, 0, 2); // Fields
if (n > 0) {
lua_pushvalue(lua, 1);
} else {
lua_pushstring(lua, default_type);
}
lua_setfield(lua, -2, "payload_type");
if (n > 1) {
lua_pushvalue(lua, 2);
lua_setfield(lua, -2, "payload_name");
}
lua_setfield(lua, -2, "Fields");
lua_pushstring(lua, "inject_payload");
lua_setfield(lua, -2, "Type");
lua_pushlstring(lua, output, len);
lua_setfield(lua, -2, "Payload");
lua_replace(lua, 1);
// use inject_message to actually deliver it
lua_getglobal(lua, "inject_message");
lua_CFunction fp = lua_tocfunction(lua, -1);
lua_pop(lua, 1); // remove function pointer
if (fp) {
fp(lua);
} else {
return luaL_error(lua, "%s() failed to call inject_message",
func_name);
}
return 0;
}
