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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#include <drizzled/error.h>
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#include <drizzled/server_includes.h>
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#include <drizzled/errmsg.h>
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#include <drizzled/gettext.h>
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#include <drizzled/plugin/error_message.h>
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std::vector<plugin::ErrorMessage *> all_errmsg_handler;
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bool plugin::ErrorMessage::addPlugin(plugin::ErrorMessage *handler)
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all_errmsg_handler.push_back(handler);
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void plugin::ErrorMessage::removePlugin(plugin::ErrorMessage *)
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all_errmsg_handler.clear();
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class Print : public std::unary_function<plugin::ErrorMessage *, bool>
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error::level_t priority;
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static bool errmsg_has= false;
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int errmsg_initializer(st_plugin_int *plugin)
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p= (errmsg_t *) malloc(sizeof(errmsg_t));
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if (p == NULL) return 1;
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memset(p, 0, sizeof(errmsg_t));
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plugin->data= (void *)p;
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if (plugin->plugin->init)
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if (plugin->plugin->init((void *)p))
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/* we're doing the errmsg plugin api,
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so we can't trust the errmsg api to emit our error messages
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so we will emit error messages to stderr */
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/* TRANSLATORS: The leading word "errmsg" is the name
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of the plugin api, and so should not be translated. */
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_("errmsg plugin '%s' init() failed."),
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int errmsg_finalizer(st_plugin_int *plugin)
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errmsg_t *p = (errmsg_t *) plugin->data;
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if (plugin->plugin->deinit)
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if (plugin->plugin->deinit((void *)p))
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/* we're doing the errmsg plugin api,
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so we can't trust the errmsg api to emit our error messages
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so we will emit error messages to stderr */
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/* TRANSLATORS: The leading word "errmsg" is the name
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of the plugin api, and so should not be translated. */
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_("errmsg plugin '%s' deinit() failed."),
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/* The plugin_foreach() iterator requires that we
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convert all the parameters of a plugin api entry point
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into just one single void ptr, plus the session.
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So we will take all the additional paramters of errmsg_vprintf,
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and marshall them into a struct of this type, and
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then just pass in a pointer to it.
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typedef struct errmsg_parms_st
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const char *format;
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Print(error::level_t priority_arg,
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const char *format_arg, va_list ap_arg) :
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std::unary_function<plugin::ErrorMessage *, bool>(),
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priority(priority_arg), format(format_arg)
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~Print() { va_end(ap); }
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inline result_type operator()(argument_type handler)
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va_copy(handler_ap, ap);
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if (handler->errmsg(priority, format, handler_ap))
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/* This gets called by plugin_foreach once for each loaded errmsg plugin */
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static bool errmsg_iterate (Session *session, plugin_ref plugin, void *p)
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errmsg_t *l= plugin_data(plugin, errmsg_t *);
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errmsg_parms_t *parms= (errmsg_parms_t *) p;
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if (l && l->errmsg_func)
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if (l->errmsg_func(session, parms->priority, parms->format, parms->ap))
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/* we're doing the errmsg plugin api,
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so we can't trust the errmsg api to emit our error messages
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so we will emit error messages to stderr */
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so we can't trust the errmsg api to emit our error messages
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so we will emit error messages to stderr */
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/* TRANSLATORS: The leading word "errmsg" is the name
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of the plugin api, and so should not be translated. */
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_("errmsg plugin '%s' errmsg() failed"),
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handler->getName().c_str());
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_("errmsg plugin '%s' errmsg_func() failed"),
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(char *)plugin_name(plugin));
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bool plugin::ErrorMessage::vprintf(error::level_t priority, char const *format, va_list ap)
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bool errmsg_vprintf (Session *session, int priority, const char *format, va_list ap)
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if (not (priority >= error::verbosity()))
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errmsg_parms_t parms;
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Check to see if any errmsg plugin has been loaded
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if not, just fall back to emitting the message to stderr.
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if (not all_errmsg_handler.size())
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/* check to see if any errmsg plugin has been loaded
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if not, just fall back to emitting the message to stderr */
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/* if it turns out that the vfprintf doesnt do one single write
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(single writes are atomic), then this needs to be rewritten to
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vsprintf into a char buffer, and then write() that char buffer
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vfprintf(stderr, format, ap);
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vfprintf(stderr, format, ap);
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/* Use find_if instead of foreach so that we can collect return codes */
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std::vector<plugin::ErrorMessage *>::iterator iter=
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std::find_if(all_errmsg_handler.begin(), all_errmsg_handler.end(),
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Print(priority, format, ap));
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/* If iter is == end() here, that means that all of the plugins returned
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* false, which in this case means they all succeeded. Since we want to
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* return false on success, we return the value of the two being !=
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return iter != all_errmsg_handler.end();
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} /* namespace drizzled */
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/* marshall the parameters so they will fit into the foreach */
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parms.priority= priority;
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parms.format= format;
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va_copy(parms.ap, ap);
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/* call errmsg_iterate
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once for each loaded errmsg plugin */
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foreach_rv= plugin_foreach(session, errmsg_iterate,
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DRIZZLE_ERRMSG_PLUGIN, (void *) &parms);
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bool errmsg_printf (Session *session, int priority, const char *format, ...)
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va_start(args, format);
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rv= errmsg_vprintf(session, priority, format, args);