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alfred.c
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alfred.c
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/**
* @file alfred.c
*
* Copyright 2015, Allied Telesis Labs New Zealand, Ltd
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>
*/
#include <assert.h>
#include <dirent.h>
#include <libxml/parser.h>
#include <libxml/tree.h>
#include <libxml/xmlschemas.h>
#include <lua.h>
#include <lualib.h>
#include <lauxlib.h>
#include <pthread.h>
#include <time.h>
#include <glib.h>
#include <glib-unix.h>
#include <lua.h>
#ifdef TEST
#include <CUnit/CUnit.h>
#include <CUnit/Basic.h>
#endif
#include <apteryx.h>
#include "common.h"
/* Change the following to alfred*/
#define APTERYX_ALFRED_PID "/var/run/apteryx-alfred.pid"
#define APTERYX_CONFIG_DIR "/etc/apteryx/schema/"
#define SECONDS_TO_MILLI 1000
/* Debug */
bool apteryx_debug = false;
/* An Alfred instance. */
struct alfred_instance_t
{
/* Lua state */
lua_State *ls;
/* Lock for Lua state */
pthread_mutex_t ls_lock;
/* List of watches based on path */
GList *watches;
/* List of provides based on path */
GList *provides;
/* List of provides based on path */
GList *indexes;
} alfred_instance_t;
typedef struct alfred_instance_t *alfred_instance;
/* The one and only instance */
alfred_instance alfred_inst = NULL;
static void
alfred_error (lua_State *ls, int res)
{
switch (res)
{
case LUA_ERRRUN:
CRITICAL ("LUA: %s\n", lua_tostring (ls, -1));
break;
case LUA_ERRSYNTAX:
CRITICAL ("LUA: %s\n", lua_tostring (ls, -1));
break;
case LUA_ERRMEM:
CRITICAL ("LUA: Memory allocation error\n");
break;
case LUA_ERRERR:
CRITICAL ("LUA: Error handler error\n");
break;
case LUA_ERRFILE:
CRITICAL ("LUA: Couldn't open file\n");
break;
default:
CRITICAL ("LUA: Unknown error\n");
break;
}
}
static bool
alfred_exec (lua_State *ls, const char *script, int nresults)
{
int res = 0;
int s_0 = lua_gettop (ls);
res = luaL_loadstring (ls, script);
if (res == 0)
res = lua_pcall (ls, 0, nresults, 0);
if (res != 0)
alfred_error (ls, res);
if (lua_gettop (ls) != (s_0 + nresults))
{
ERROR ("Lua: Stack not zero(%d) after script: %s\n",
lua_gettop (ls), script);
}
return (res == 0);
}
static bool
watch_node_changed (const char *path, const char *value)
{
GList *matches = NULL;
GList *node = NULL;
GList *script = NULL;
GList *scripts = NULL;
bool ret = false;
cb_info_t *cb = NULL;
assert (path);
assert (alfred_inst);
matches = cb_match (&alfred_inst->watches, path, CB_MATCH_EXACT |
CB_PATH_MATCH_PART | CB_MATCH_WILD_PATH);
if (matches == NULL)
{
ERROR ("ALFRED: No Alfred watch for %s\n", path);
return false;
}
pthread_mutex_lock (&alfred_inst->ls_lock);
for (node = g_list_first (matches); node != NULL; node = g_list_next (node))
{
cb = node->data;
scripts = (GList *) (long) cb->cb;
for (script = g_list_first (scripts); script != NULL; script = g_list_next (script))
{
lua_pushstring (alfred_inst->ls, path);
lua_setglobal (alfred_inst->ls, "_path");
lua_pushstring (alfred_inst->ls, value);
lua_setglobal (alfred_inst->ls, "_value");
ret = alfred_exec (alfred_inst->ls, script->data, 0);
}
}
g_list_free_full (matches, (GDestroyNotify) cb_release);
DEBUG("LUA: Stack:%d Memory:%dkb\n", lua_gettop (alfred_inst->ls),
lua_gc (alfred_inst->ls, LUA_GCCOUNT, 0));
pthread_mutex_unlock (&alfred_inst->ls_lock);
DEBUG ("ALFRED WATCH: %s = %s\n", path, value);
return ret;
}
char *
provide_node_changed (const char *path)
{
const char *const_value = NULL;
char *ret = NULL;
GList *matches = NULL;
char *script = NULL;
cb_info_t *cb = NULL;
int s_0;
matches = cb_match (&alfred_inst->provides, path, CB_MATCH_EXACT | CB_MATCH_WILD_PATH);
if (matches == NULL)
{
ERROR ("ALFRED: No Alfred provide for %s\n", path);
return NULL;
}
pthread_mutex_lock (&alfred_inst->ls_lock);
cb = g_list_first (matches)->data;
script = (char *) (long) cb->cb;
lua_pushstring (alfred_inst->ls, path);
lua_setglobal (alfred_inst->ls, "_path");
s_0 = lua_gettop (alfred_inst->ls);
if (!alfred_exec (alfred_inst->ls, script, 1))
{
ERROR ("Lua: Failed to execute provide script for path: %s\n", path);
}
g_list_free_full (matches, (GDestroyNotify) cb_release);
/* The return value of luaL_dostring is the top value of the stack */
const_value = lua_tostring (alfred_inst->ls, -1);
lua_pop (alfred_inst->ls, 1);
ret = g_strdup (const_value);
DEBUG("LUA: Stack:%d Memory:%dkb\n", lua_gettop (alfred_inst->ls),
lua_gc (alfred_inst->ls, LUA_GCCOUNT, 0));
if (lua_gettop (alfred_inst->ls) != s_0)
{
ERROR ("Lua: Stack not zero(%d) after provide: %s\n",
lua_gettop (alfred_inst->ls), path);
}
pthread_mutex_unlock (&alfred_inst->ls_lock);
return ret;
}
static GList *
index_node_changed (const char *path)
{
char *script = NULL;
const char *tmp_path = NULL;
char *tmp_path2 = NULL;
GList *ret = NULL;
GList *matches = NULL;
cb_info_t *cb = NULL;
int s_0;
matches = cb_match (&alfred_inst->indexes, path, CB_MATCH_EXACT | CB_MATCH_WILD_PATH);
if (matches == NULL)
{
ERROR ("ALFRED: No Alfred index for %s\n", path);
return NULL;
}
cb = g_list_first (matches)->data;
script = (char *) (long) cb->cb;
pthread_mutex_lock (&alfred_inst->ls_lock);
lua_pushstring (alfred_inst->ls, path);
lua_setglobal (alfred_inst->ls, "_path");
s_0 = lua_gettop (alfred_inst->ls);
if (!alfred_exec (alfred_inst->ls, script, 1))
{
ERROR ("Lua: Failed to execute index script for path: %s\n", path);
}
g_list_free_full (matches, (GDestroyNotify) cb_release);
if (lua_gettop (alfred_inst->ls))
{
if (lua_istable(alfred_inst->ls, -1))
{
lua_pushnil (alfred_inst->ls);
while (lua_next(alfred_inst->ls, -2) != 0)
{
tmp_path = lua_tostring (alfred_inst->ls, -1);
tmp_path2 = strdup (tmp_path);
ret = g_list_append (ret, tmp_path2);
/* Removes 'value'; keeps 'key' for next iteration */
lua_pop (alfred_inst->ls, 1);
}
lua_pop (alfred_inst->ls, 1);
}
}
DEBUG("LUA: Stack:%d Memory:%dkb\n", lua_gettop(alfred_inst->ls),
lua_gc (alfred_inst->ls, LUA_GCCOUNT, 0));
if (lua_gettop (alfred_inst->ls) != s_0)
{
ERROR ("Lua: Stack not zero(%d) after index: %s\n",
lua_gettop (alfred_inst->ls), path);
}
pthread_mutex_unlock (&alfred_inst->ls_lock);
return ret;
}
static void
alfred_register_watches (gpointer value, gpointer user_data)
{
cb_info_t *cb = (cb_info_t *) value;
int install = GPOINTER_TO_INT (user_data);
if ((install && !apteryx_watch (cb->path, watch_node_changed)) ||
(!install && !apteryx_unwatch (cb->path, watch_node_changed)))
{
ERROR ("Failed to (un)register watch for path %s\n", cb->path);
}
}
static void
alfred_register_provide (gpointer value, gpointer user_data)
{
cb_info_t *cb = (cb_info_t *) value;
int install = GPOINTER_TO_INT (user_data);
if ((install && !apteryx_provide (cb->path, provide_node_changed)) ||
(!install && !apteryx_unprovide (cb->path, provide_node_changed)))
{
ERROR ("Failed to (un)register provide for path %s\n", cb->path);
}
}
static void
alfred_register_index (gpointer value, gpointer user_data)
{
cb_info_t *cb = (cb_info_t *) value;
int install = GPOINTER_TO_INT (user_data);
if ((install && !apteryx_index (cb->path, index_node_changed)) ||
(!install && !apteryx_unindex (cb->path, index_node_changed)))
{
ERROR ("Failed to (un)register provide for path %s\n", cb->path);
}
}
static bool
destroy_watches (gpointer value, gpointer rpc)
{
cb_info_t *cb = (cb_info_t *) value;
GList *scripts = (GList *) (long) cb->cb;
DEBUG ("XML: Destroy watches for path %s\n", cb->path);
g_list_free_full (scripts, g_free);
cb_destroy (cb);
cb_release (cb);
return true;
}
static bool
destroy_provides (gpointer value, gpointer rpc)
{
cb_info_t *cb = (cb_info_t *) value;
char *script = (char *) (long) cb->cb;
DEBUG ("XML: Destroy provides for path %s\n", cb->path);
g_free (script);
cb_destroy (cb);
cb_release (cb);
return true;
}
static bool
destroy_indexes (gpointer value, gpointer rpc)
{
cb_info_t *cb = (cb_info_t *) value;
char *script = (char *) (long) cb->cb;
DEBUG ("XML: Destroy indexes for path %s\n", cb->path);
g_free (script);
cb_destroy (cb);
cb_release (cb);
return true;
}
static bool
node_is_leaf (xmlNode *node)
{
for (xmlNode *n = node->children; n; n = n->next)
{
if (n->type == XML_ELEMENT_NODE && strcmp ((const char *) n->name, "NODE") == 0)
return false;
}
return true;
}
static bool
process_node (alfred_instance alfred, xmlNode *node, char *parent)
{
xmlChar *name = NULL;
xmlChar *content = NULL;
char *path = NULL;
char *tmp_content = NULL;
GList *matches = NULL;
GList *scripts = NULL;
cb_info_t *cb;
bool res = true;
assert (alfred);
/* Ignore fluff */
if (!node || node->type != XML_ELEMENT_NODE)
return true;
/* Process this node */
if (strcmp ((const char *) node->name, "NODE") == 0)
{
/* Find node name and path */
name = xmlGetProp (node, (xmlChar *) "name");
if (parent)
path = g_strdup_printf ("%s/%s", parent, name);
else
path = g_strdup_printf ("/%s", name);
DEBUG ("XML: %s: %s (%s)\n", node->name, name, path);
}
else if (strcmp ((const char *) node->name, "WATCH") == 0)
{
content = xmlNodeGetContent (node);
tmp_content = g_strdup ((char *) content);
/* If the node is a leaf or ends in a '*' don't add another '*' */
if (node_is_leaf (node->parent) || parent[strlen (parent) - 1] == '*')
{
path = g_strdup (parent);
}
else
{
path = g_strdup_printf ("%s/*", parent);
}
if (alfred->watches)
{
matches = cb_match (&alfred->watches, path, CB_MATCH_EXACT);
}
if (matches == NULL)
{
scripts = g_list_append (scripts, tmp_content);
cb = cb_create (&alfred->watches, "", (const char *) path, 0,
(uint64_t) (long) scripts);
}
else
{
/* A watch already exists on that exact path */
cb = matches->data;
scripts = (GList *) (long) cb->cb;
scripts = g_list_append (scripts, tmp_content);
g_list_free_full (matches, (GDestroyNotify) cb_release);
}
DEBUG ("XML: %s: (%s)\n", node->name, cb->path);
}
else if (strcmp ((const char *) node->name, "SCRIPT") == 0)
{
bool ret = false;
content = xmlNodeGetContent (node);
DEBUG ("XML: %s: %s\n", node->name, content);
pthread_mutex_lock (&alfred->ls_lock);
ret = alfred_exec (alfred->ls, (char *) content, 0);
pthread_mutex_unlock (&alfred->ls_lock);
if (!ret)
{
res = false;
goto exit;
}
}
else if (strcmp ((const char *) node->name, "PROVIDE") == 0)
{
content = xmlNodeGetContent (node);
tmp_content = g_strdup ((char *) content);
DEBUG ("PROVIDE: %s, XML STR: %s\n", parent, content);
/* If the node is a leaf or ends in a '*' don't add another '*' */
if (node_is_leaf (node->parent) || parent[strlen (parent) - 1] == '*')
{
path = g_strdup (parent);
}
else
{
path = g_strdup_printf ("%s/*", parent);
}
if (path)
{
cb = cb_create (&alfred->provides, "", (const char *) path, 0,
(uint64_t) (long) tmp_content);
}
}
else if (strcmp ((const char *) node->name, "INDEX") == 0)
{
content = xmlNodeGetContent (node);
tmp_content = g_strdup ((char *) content);
DEBUG ("INDEX: XML STR: %s\n", content);
/* If the node is a leaf or ends in a '*' don't add another '*' */
if (node_is_leaf (node->parent) || parent[strlen (parent) - 1] == '*')
{
path = g_strdup (parent);
}
else
{
path = g_strdup_printf ("%s/*", parent);
}
if (path)
{
cb = cb_create (&alfred->indexes, "", (const char *) path, 0,
(uint64_t) (long) tmp_content);
}
}
/* Process children */
for (xmlNode *n = node->children; n; n = n->next)
{
if (!process_node (alfred, n, path))
{
res = false;
goto exit;
}
}
exit:
if (path)
g_free (path);
if (name)
xmlFree (name);
if (content)
xmlFree (content);
return res;
}
static bool
load_config_files (alfred_instance alfred, const char *path)
{
struct dirent *entry;
DIR *dir;
bool res = true;
/* Find all the XML files in this folder */
dir = opendir (path);
if (dir == NULL)
{
DEBUG ("XML: Failed to open \"%s\"", path);
return false;
}
/* Load all libraries first */
for (entry = readdir (dir); entry; entry = readdir (dir))
{
const char *ext = strrchr (entry->d_name, '.');
if (ext && strcmp (".lua", ext) == 0)
{
char *filename = g_strdup_printf ("%s/%s", path, entry->d_name);
int error;
DEBUG ("ALFRED: Load Lua file \"%s\"\n", filename);
/* Execute the script */
pthread_mutex_lock (&alfred->ls_lock);
lua_getglobal (alfred->ls, "debug");
lua_getfield (alfred->ls, -1, "traceback");
error = luaL_loadfile (alfred->ls, filename);
if (error == 0)
error = lua_pcall (alfred->ls, 0, 0, 0);
if (error != 0)
alfred_error (alfred->ls, error);
g_free (filename);
while (lua_gettop (alfred->ls))
lua_pop (alfred->ls, 1);
pthread_mutex_unlock (&alfred->ls_lock);
/* Stop processing files if there has been an error */
if (error != 0)
{
res = false;
goto exit;
}
}
}
rewinddir (dir);
/* Load all XML files */
for (entry = readdir (dir); entry; entry = readdir (dir))
{
const char *ext = strchr (entry->d_name, '.');
if (ext && ((strcmp (".xml", ext) == 0) || (strcmp (".xml.gz", ext) == 0)))
{
/* Full path */
char *filename = g_strdup_printf ("%s%s%s", path,
path[strlen (path) - 1] == '/' ? "" : "/", entry->d_name);
DEBUG ("ALFRED: Parse XML file \"%s\"\n", filename);
/* Parse the file */
xmlDoc *doc = xmlParseFile (filename);
if (doc == NULL)
{
ERROR ("ALFRED: Invalid file \"%s\"\n", filename);
g_free (filename);
res = false;
goto exit;
}
res = process_node (alfred, xmlDocGetRootElement (doc), NULL);
xmlFreeDoc (doc);
g_free (filename);
/* Stop processing files if there has been an error */
if (!res)
goto exit;
}
}
exit:
closedir (dir);
return res;
}
GList *delayed_work = NULL;
pthread_mutex_t delayed_work_lock = PTHREAD_MUTEX_INITIALIZER;
struct delayed_work_s {
guint id;
char *script;
};
static void
dw_destroy (gpointer arg1)
{
struct delayed_work_s *dw = (struct delayed_work_s *) arg1;
g_free (dw->script);
g_free (dw);
}
static gboolean
delayed_work_process (gpointer arg1)
{
struct delayed_work_s *dw = (struct delayed_work_s *) arg1;
pthread_mutex_lock (&delayed_work_lock);
/* Remove the script to be run */
delayed_work = g_list_remove (delayed_work, dw);
pthread_mutex_unlock (&delayed_work_lock);
/* Execute the script */
pthread_mutex_lock (&alfred_inst->ls_lock);
alfred_exec (alfred_inst->ls, dw->script, 0);
pthread_mutex_unlock (&alfred_inst->ls_lock);
return false;
}
static void
delayed_work_add (int delay, const char *script, bool reset_timer)
{
bool found = false;
struct delayed_work_s *dw = NULL;
pthread_mutex_lock (&delayed_work_lock);
for (GList * iter = delayed_work; iter; iter = g_list_next (iter))
{
dw = (struct delayed_work_s *) iter->data;
if (strcmp (script, dw->script) == 0)
{
found = true;
if (reset_timer)
{
delayed_work = g_list_remove (delayed_work, dw);
g_source_remove (dw->id);
}
break;
}
}
if (!found || reset_timer)
{
dw = (struct delayed_work_s *) g_malloc0 (sizeof (struct delayed_work_s));
dw->script = g_strdup (script);
delayed_work = g_list_append (delayed_work, dw);
dw->id = g_timeout_add_full (G_PRIORITY_DEFAULT, delay, delayed_work_process,
(gpointer) dw, dw_destroy);
}
pthread_mutex_unlock (&delayed_work_lock);
}
static int
rate_limit (lua_State *ls)
{
bool failure = false;
if (lua_gettop (ls) != 2)
{
ERROR ("Alfred.rate_limit() takes 2 arguements\n");
failure = true;
}
if (!lua_isnumber (ls, 1))
{
ERROR ("First argument to Alfred.rate_limit() must be a number\n");
failure = true;
}
if (!lua_isstring (ls, 2))
{
ERROR ("Second argument to Alfred.rate_limit() must be a string\n");
failure = true;
}
if (failure)
{
return 0;
}
delayed_work_add (lua_tonumber (ls, 1) * SECONDS_TO_MILLI, lua_tostring (ls, 2), false);
return 0;
}
static int
after_quiet (lua_State *ls)
{
bool failure = false;
if (lua_gettop (ls) != 2)
{
ERROR ("Alfred.after_quiet() takes 2 arguements\n");
failure = true;
}
if (!lua_isnumber (ls, 1))
{
ERROR ("First argument to Alfred.after_quiet() must be a number\n");
failure = true;
}
if (!lua_isstring (ls, 2))
{
ERROR ("Second argument to Alfred.after_quiet() must be a string\n");
failure = true;
}
if (failure)
{
return 0;
}
delayed_work_add (lua_tonumber (ls, 1) * SECONDS_TO_MILLI, lua_tostring (ls, 2), true);
return 0;
}
static void
alfred_shutdown (void)
{
assert (alfred_inst);
if (alfred_inst->watches)
{
g_list_foreach (alfred_inst->watches, (GFunc) alfred_register_watches,
GINT_TO_POINTER (0));
g_list_foreach (alfred_inst->watches, (GFunc) destroy_watches, NULL);
g_list_free (alfred_inst->watches);
}
if (alfred_inst->provides)
{
g_list_foreach (alfred_inst->provides, (GFunc) alfred_register_provide,
GINT_TO_POINTER (0));
g_list_foreach (alfred_inst->provides, (GFunc) destroy_provides, NULL);
g_list_free (alfred_inst->provides);
}
if (alfred_inst->indexes)
{
g_list_foreach (alfred_inst->indexes, (GFunc) alfred_register_index,
GINT_TO_POINTER (0));
g_list_foreach (alfred_inst->indexes, (GFunc) destroy_indexes, NULL);
g_list_free (alfred_inst->indexes);
}
if (alfred_inst->ls)
lua_close (alfred_inst->ls);
g_free (alfred_inst);
alfred_inst = NULL;
return;
}
void
alfred_init (const char *path)
{
assert (path);
/* Malloc memory for the new service */
alfred_inst = (alfred_instance) g_malloc0 (sizeof (*alfred_inst));
if (!alfred_inst)
{
CRITICAL ("ALFRED: No memory for alfred instance\n");
goto error;
}
pthread_mutex_init (&alfred_inst->ls_lock, NULL);
/* Initialise the Lua state */
alfred_inst->ls = luaL_newstate ();
if (!alfred_inst->ls)
{
CRITICAL ("XML: Failed to instantiate Lua interpreter\n");
goto error;
}
luaL_openlibs (alfred_inst->ls);
if (luaL_dostring (alfred_inst->ls, "require('api')") != 0)
{
ERROR ("Lua: Failed to require('api')\n");
}
/* Add the rate_limit,after_quiet functions to a Lua table so it can be called using Lua */
lua_newtable (alfred_inst->ls);
lua_pushcfunction (alfred_inst->ls, rate_limit);
lua_setfield (alfred_inst->ls, -2, "rate_limit");
lua_pushcfunction (alfred_inst->ls, after_quiet);
lua_setfield (alfred_inst->ls, -2, "after_quiet");
lua_setglobal (alfred_inst->ls, "Alfred");
/* Parse files in the config path */
if (!load_config_files (alfred_inst, path))
{
goto error;
}
/* Register watches */
g_list_foreach (alfred_inst->watches, (GFunc) alfred_register_watches, GINT_TO_POINTER (1));
/* Register provides */
g_list_foreach (alfred_inst->provides, (GFunc) alfred_register_provide, GINT_TO_POINTER (1));
/* Register indexes */
g_list_foreach (alfred_inst->indexes, (GFunc) alfred_register_index, GINT_TO_POINTER (1));
return;
error:
if (alfred_inst)
{
alfred_shutdown ();
}
return;
}
#ifdef TEST
static int
suite_init (void)
{
return 0;
}
static int
suite_clean (void)
{
return 0;
}
void
test_simple_watch ()
{
FILE *library = NULL;
FILE *data = NULL;
char *test_str = NULL;
/* Create library file + XML */
library = fopen ("alfred_test.lua", "w");
CU_ASSERT (library != NULL);
if (!library)
{
goto cleanup;
}
fprintf (library,
"function test_library_function(test_str)\n"
" test_value = test_str\n"
"end\n"
);
fclose (library);
library = NULL;
data = fopen ("alfred_test.xml", "w");
CU_ASSERT (data != NULL);
if (!data)
{
goto cleanup;
}
fprintf (data, "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
"<MODULE xmlns=\"https://github.com/alliedtelesis/apteryx\"\n"
" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
" xsi:schemaLocation=\"https://github.com/alliedtelesis/apteryx\n"
" https://github.com/alliedtelesis/apteryx/releases/download/v2.10/apteryx.xsd\">\n"
" <SCRIPT>\n"
" function test_node_change(new_value)\n"
" test_library_function(new_value)\n"
" end\n"
" </SCRIPT>\n"
" <NODE name=\"test\">\n"
" <NODE name=\"set_node\" mode=\"rw\" help=\"Set this node to test the watch function\">\n"
" <WATCH>test_node_change(_value)</WATCH>\n"
" </NODE>\n"
" </NODE>\n"
"</MODULE>\n");
fclose (data);
data = NULL;
/* Init */
alfred_init ("./");
CU_ASSERT (alfred_inst != NULL);
if (!alfred_inst)
{
goto cleanup;
}
/* Trigger Action */
apteryx_set ("/test/set_node", "Goodnight moon");
sleep (1);
/* Check output */
lua_getglobal (alfred_inst->ls, "test_value");
if (!lua_isnil (alfred_inst->ls, -1))
{
test_str = strdup (lua_tostring (alfred_inst->ls, -1));
}
lua_pop (alfred_inst->ls, 1);
CU_ASSERT (test_str && strcmp (test_str, "Goodnight moon") == 0);
apteryx_set ("/test/set_node", NULL);
/* Clean up */
cleanup:
if (alfred_inst)
{
alfred_shutdown ();
}
if (library)
{
fclose (library);
unlink ("alfred_test.lua");
}
if (data)
{
fclose (data);
unlink ("alfred_test.xml");
}
if (test_str)
{
free (test_str);
}
}
void
test_dir_watch ()
{
FILE *library = NULL;
FILE *data = NULL;
char *test_str = NULL;
char *test_path = NULL;
/* Create library file + XML */
library = fopen ("alfred_test.lua", "w");
CU_ASSERT (library != NULL);
if (!library)
{
goto cleanup;
}
fprintf (library,
"function test_library_function(p, v)\n"
" test_value = v\n"
" test_path = p\n"
"end\n"
);
fclose (library);
library = NULL;
data = fopen ("alfred_test.xml", "w");
CU_ASSERT (data != NULL);
if (!data)
{
goto cleanup;
}
fprintf (data, "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
"<MODULE xmlns=\"https://github.com/alliedtelesis/apteryx\"\n"
" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
" xsi:schemaLocation=\"https://github.com/alliedtelesis/apteryx\n"
" https://github.com/alliedtelesis/apteryx/releases/download/v2.10/apteryx.xsd\">\n"
" <SCRIPT>\n"
" function test_dir_change(path, new_value)\n"
" test_library_function(path, new_value)\n"
" end\n"
" </SCRIPT>\n"
" <NODE name=\"test\">\n"
" <WATCH>test_dir_change(_path, _value)</WATCH>\n"
" <NODE name=\"set_node\" mode=\"rw\" help=\"Set this node to test the watch function\"/>\n"
" <NODE name=\"deeper\">\n"
" <NODE name=\"set_node\" mode=\"rw\" help=\"Set this node to test the deeper function\"/>\n"
" </NODE>\n"
" </NODE>\n"
"</MODULE>\n");
fclose (data);
data = NULL;
/* Init */
alfred_init ("./");
CU_ASSERT (alfred_inst != NULL);
if (!alfred_inst)
goto cleanup;
/* Trigger Action */
apteryx_set ("/test/set_node", "Goodnight cow jumping over the moon");
sleep (1);
/* Check output */
lua_getglobal (alfred_inst->ls, "test_value");
if (!lua_isnil (alfred_inst->ls, -1))
test_str = strdup (lua_tostring (alfred_inst->ls, -1));
lua_pop (alfred_inst->ls, 1);
lua_getglobal (alfred_inst->ls, "test_path");
if (!lua_isnil (alfred_inst->ls, -1))
test_path = strdup (lua_tostring (alfred_inst->ls, -1));
lua_pop (alfred_inst->ls, 1);
CU_ASSERT (test_path && strcmp (test_path, "/test/set_node") == 0);
CU_ASSERT (test_str && strcmp (test_str, "Goodnight cow jumping over the moon") == 0);
free (test_path);
free (test_str);
/* Trigger Action */
apteryx_set ("/test/deeper/set_node", "Goodnight bears");
sleep (1);
/* Check output */
lua_getglobal (alfred_inst->ls, "test_value");
if (!lua_isnil (alfred_inst->ls, -1))
test_str = strdup (lua_tostring (alfred_inst->ls, -1));
lua_pop (alfred_inst->ls, 1);
lua_getglobal (alfred_inst->ls, "test_path");
if (!lua_isnil (alfred_inst->ls, -1))
test_path = strdup (lua_tostring (alfred_inst->ls, -1));
lua_pop (alfred_inst->ls, 1);
CU_ASSERT (test_path && strcmp (test_path, "/test/deeper/set_node") == 0);
CU_ASSERT (test_str && strcmp (test_str, "Goodnight bears") == 0);
apteryx_set ("/test/set_node", NULL);
apteryx_set ("/test/deeper/set_node", NULL);
/* Clean up */
cleanup:
if (alfred_inst)
{