typedef struct java_plugin_config_s java_plugin_config_t;
/* }}} */
-#define CB_TYPE_CONFIG 1
-#define CB_TYPE_INIT 2
-#define CB_TYPE_READ 3
-#define CB_TYPE_WRITE 4
-#define CB_TYPE_SHUTDOWN 5
+#define CB_TYPE_CONFIG 1
+#define CB_TYPE_INIT 2
+#define CB_TYPE_READ 3
+#define CB_TYPE_WRITE 4
+#define CB_TYPE_FLUSH 5
+#define CB_TYPE_SHUTDOWN 6
+#define CB_TYPE_LOG 7
+#define CB_TYPE_NOTIFICATION 8
struct cjni_callback_info_s /* {{{ */
{
char *name;
static int cjni_read (user_data_t *user_data);
static int cjni_write (const data_set_t *ds, const value_list_t *vl,
user_data_t *ud);
+static int cjni_flush (int timeout, const char *identifier, user_data_t *ud);
+static void cjni_log (int severity, const char *message, user_data_t *ud);
+static int cjni_notification (const notification_t *n, user_data_t *ud);
/*
* C to Java conversion functions
status = ctoj_string (jvm_env, str, \
c_valuelist, o_valuelist, method_name); \
if (status != 0) { \
- ERROR ("java plugin: ctoj_value_list: jtoc_string (%s) failed.", \
+ ERROR ("java plugin: ctoj_value_list: ctoj_string (%s) failed.", \
method_name); \
(*jvm_env)->DeleteLocalRef (jvm_env, o_valuelist); \
return (NULL); \
}
return (o_valuelist);
-} /* }}} int ctoj_value_list */
+} /* }}} jobject ctoj_value_list */
+
+/* Convert a notification_t to a org.collectd.api.Notification */
+static jobject ctoj_notification (JNIEnv *jvm_env, /* {{{ */
+ const notification_t *n)
+{
+ jclass c_notification;
+ jmethodID m_constructor;
+ jobject o_notification;
+ int status;
+
+ /* First, create a new Notification instance..
+ * Look up the class.. */
+ c_notification = (*jvm_env)->FindClass (jvm_env,
+ "org.collectd.api.Notification");
+ if (c_notification == NULL)
+ {
+ ERROR ("java plugin: ctoj_notification: "
+ "FindClass (org.collectd.api.Notification) failed.");
+ return (NULL);
+ }
+
+ /* Lookup the `Notification ()' constructor. */
+ m_constructor = (*jvm_env)->GetMethodID (jvm_env, c_notification,
+ "<init>", "()V");
+ if (m_constructor == NULL)
+ {
+ ERROR ("java plugin: ctoj_notification: Cannot find the "
+ "`Notification ()' constructor.");
+ return (NULL);
+ }
+
+ /* Create a new instance. */
+ o_notification = (*jvm_env)->NewObject (jvm_env, c_notification,
+ m_constructor);
+ if (o_notification == NULL)
+ {
+ ERROR ("java plugin: ctoj_notification: Creating a new Notification "
+ "instance failed.");
+ return (NULL);
+ }
+
+ /* Set the strings.. */
+#define SET_STRING(str,method_name) do { \
+ status = ctoj_string (jvm_env, str, \
+ c_notification, o_notification, method_name); \
+ if (status != 0) { \
+ ERROR ("java plugin: ctoj_notification: ctoj_string (%s) failed.", \
+ method_name); \
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_notification); \
+ return (NULL); \
+ } } while (0)
+
+ SET_STRING (n->host, "setHost");
+ SET_STRING (n->plugin, "setPlugin");
+ SET_STRING (n->plugin_instance, "setPluginInstance");
+ SET_STRING (n->type, "setType");
+ SET_STRING (n->type_instance, "setTypeInstance");
+ SET_STRING (n->message, "setMessage");
+
+#undef SET_STRING
+
+ /* Set the `time' member. Java stores time in milliseconds. */
+ status = ctoj_long (jvm_env, ((jlong) n->time) * ((jlong) 1000),
+ c_notification, o_notification, "setTime");
+ if (status != 0)
+ {
+ ERROR ("java plugin: ctoj_notification: ctoj_long (setTime) failed.");
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_notification);
+ return (NULL);
+ }
+
+ /* Set the `interval' member.. */
+ status = ctoj_int (jvm_env, (jint) n->severity,
+ c_notification, o_notification, "setSeverity");
+ if (status != 0)
+ {
+ ERROR ("java plugin: ctoj_notification: ctoj_int (setSeverity) failed.");
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_notification);
+ return (NULL);
+ }
+
+ return (o_notification);
+} /* }}} jobject ctoj_notification */
/*
* Java to C conversion functions
*/
/* Call a `String <method> ()' method. */
static int jtoc_string (JNIEnv *jvm_env, /* {{{ */
- char *buffer, size_t buffer_size,
+ char *buffer, size_t buffer_size, int empty_okay,
jclass class_ptr, jobject object_ptr, const char *method_name)
{
jmethodID method_id;
}
string_obj = (*jvm_env)->CallObjectMethod (jvm_env, object_ptr, method_id);
- if (string_obj == NULL)
+ if ((string_obj == NULL) && (empty_okay == 0))
{
ERROR ("java plugin: jtoc_string: CallObjectMethod (%s) failed.",
method_name);
return (-1);
}
+ else if ((string_obj == NULL) && (empty_okay != 0))
+ {
+ memset (buffer, 0, buffer_size);
+ return (0);
+ }
c_str = (*jvm_env)->GetStringUTFChars (jvm_env, string_obj, 0);
if (c_str == NULL)
return (0);
} /* }}} int jtoc_string */
+/* Call an `int <method> ()' method. */
+static int jtoc_int (JNIEnv *jvm_env, /* {{{ */
+ jint *ret_value,
+ jclass class_ptr, jobject object_ptr, const char *method_name)
+{
+ jmethodID method_id;
+
+ method_id = (*jvm_env)->GetMethodID (jvm_env, class_ptr,
+ method_name, "()I");
+ if (method_id == NULL)
+ {
+ ERROR ("java plugin: jtoc_int: Cannot find method `int %s ()'.",
+ method_name);
+ return (-1);
+ }
+
+ *ret_value = (*jvm_env)->CallIntMethod (jvm_env, object_ptr, method_id);
+
+ return (0);
+} /* }}} int jtoc_int */
+
/* Call a `long <method> ()' method. */
static int jtoc_long (JNIEnv *jvm_env, /* {{{ */
jlong *ret_value,
method_name, "()D");
if (method_id == NULL)
{
- ERROR ("java plugin: jtoc_string: Cannot find method `double %s ()'.",
+ ERROR ("java plugin: jtoc_double: Cannot find method `double %s ()'.",
method_name);
return (-1);
}
return (-1);
}
-#define SET_STRING(buffer,method) do { \
- status = jtoc_string (jvm_env, buffer, sizeof (buffer), \
+ /* eo == empty okay */
+#define SET_STRING(buffer,method, eo) do { \
+ status = jtoc_string (jvm_env, buffer, sizeof (buffer), eo, \
class_ptr, object_ptr, method); \
if (status != 0) { \
ERROR ("java plugin: jtoc_value_list: jtoc_string (%s) failed.", \
return (-1); \
} } while (0)
- SET_STRING(vl->type, "getType");
+ SET_STRING(vl->type, "getType", /* empty = */ 0);
ds = plugin_get_ds (vl->type);
if (ds == NULL)
return (-1);
}
- SET_STRING(vl->host, "getHost");
- SET_STRING(vl->plugin, "getPlugin");
- SET_STRING(vl->plugin_instance, "getPluginInstance");
- SET_STRING(vl->type_instance, "getTypeInstance");
+ SET_STRING(vl->host, "getHost", /* empty = */ 0);
+ SET_STRING(vl->plugin, "getPlugin", /* empty = */ 0);
+ SET_STRING(vl->plugin_instance, "getPluginInstance", /* empty = */ 1);
+ SET_STRING(vl->type_instance, "getTypeInstance", /* empty = */ 1);
#undef SET_STRING
return (0);
} /* }}} int jtoc_value_list */
+/* Convert a org.collectd.api.Notification to a notification_t. */
+static int jtoc_notification (JNIEnv *jvm_env, notification_t *n, /* {{{ */
+ jobject object_ptr)
+{
+ jclass class_ptr;
+ int status;
+ jlong tmp_long;
+ jint tmp_int;
+
+ class_ptr = (*jvm_env)->GetObjectClass (jvm_env, object_ptr);
+ if (class_ptr == NULL)
+ {
+ ERROR ("java plugin: jtoc_notification: GetObjectClass failed.");
+ return (-1);
+ }
+
+ /* eo == empty okay */
+#define SET_STRING(buffer,method, eo) do { \
+ status = jtoc_string (jvm_env, buffer, sizeof (buffer), eo, \
+ class_ptr, object_ptr, method); \
+ if (status != 0) { \
+ ERROR ("java plugin: jtoc_notification: jtoc_string (%s) failed.", \
+ method); \
+ return (-1); \
+ } } while (0)
+
+ SET_STRING (n->host, "getHost", /* empty = */ 1);
+ SET_STRING (n->plugin, "getPlugin", /* empty = */ 1);
+ SET_STRING (n->plugin_instance, "getPluginInstance", /* empty = */ 1);
+ SET_STRING (n->type, "getType", /* empty = */ 1);
+ SET_STRING (n->type_instance, "getTypeInstance", /* empty = */ 1);
+ SET_STRING (n->message, "getMessage", /* empty = */ 0);
+
+#undef SET_STRING
+
+ status = jtoc_long (jvm_env, &tmp_long, class_ptr, object_ptr, "getTime");
+ if (status != 0)
+ {
+ ERROR ("java plugin: jtoc_notification: jtoc_long (getTime) failed.");
+ return (-1);
+ }
+ /* Java measures time in milliseconds. */
+ n->time = (time_t) (tmp_long / ((jlong) 1000));
+
+ status = jtoc_int (jvm_env, &tmp_int,
+ class_ptr, object_ptr, "getSeverity");
+ if (status != 0)
+ {
+ ERROR ("java plugin: jtoc_notification: jtoc_int (getSeverity) failed.");
+ return (-1);
+ }
+ n->severity = (int) tmp_int;
+
+ return (0);
+} /* }}} int jtoc_notification */
/*
* Functions accessible from Java
*/
return (status);
} /* }}} jint cjni_api_dispatch_values */
+static jint JNICALL cjni_api_dispatch_notification (JNIEnv *jvm_env, /* {{{ */
+ jobject this, jobject o_notification)
+{
+ notification_t n;
+ int status;
+
+ memset (&n, 0, sizeof (n));
+ n.meta = NULL;
+
+ status = jtoc_notification (jvm_env, &n, o_notification);
+ if (status != 0)
+ {
+ ERROR ("java plugin: cjni_api_dispatch_notification: jtoc_notification failed.");
+ return (-1);
+ }
+
+ status = plugin_dispatch_notification (&n);
+
+ return (status);
+} /* }}} jint cjni_api_dispatch_notification */
+
static jobject JNICALL cjni_api_get_ds (JNIEnv *jvm_env, /* {{{ */
jobject this, jobject o_string_type)
{
return (0);
} /* }}} jint cjni_api_register_write */
+static jint JNICALL cjni_api_register_flush (JNIEnv *jvm_env, /* {{{ */
+ jobject this, jobject o_name, jobject o_flush)
+{
+ user_data_t ud;
+ cjni_callback_info_t *cbi;
+
+ cbi = cjni_callback_info_create (jvm_env, o_name, o_flush, CB_TYPE_FLUSH);
+ if (cbi == NULL)
+ return (-1);
+
+ DEBUG ("java plugin: Registering new flush callback: %s", cbi->name);
+
+ memset (&ud, 0, sizeof (ud));
+ ud.data = (void *) cbi;
+ ud.free_func = cjni_callback_info_destroy;
+
+ plugin_register_flush (cbi->name, cjni_flush, &ud);
+
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_flush);
+
+ return (0);
+} /* }}} jint cjni_api_register_flush */
+
static jint JNICALL cjni_api_register_shutdown (JNIEnv *jvm_env, /* {{{ */
jobject this, jobject o_name, jobject o_shutdown)
{
CB_TYPE_SHUTDOWN));
} /* }}} jint cjni_api_register_shutdown */
+static jint JNICALL cjni_api_register_log (JNIEnv *jvm_env, /* {{{ */
+ jobject this, jobject o_name, jobject o_log)
+{
+ user_data_t ud;
+ cjni_callback_info_t *cbi;
+
+ cbi = cjni_callback_info_create (jvm_env, o_name, o_log, CB_TYPE_LOG);
+ if (cbi == NULL)
+ return (-1);
+
+ DEBUG ("java plugin: Registering new log callback: %s", cbi->name);
+
+ memset (&ud, 0, sizeof (ud));
+ ud.data = (void *) cbi;
+ ud.free_func = cjni_callback_info_destroy;
+
+ plugin_register_log (cbi->name, cjni_log, &ud);
+
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_log);
+
+ return (0);
+} /* }}} jint cjni_api_register_log */
+
+static jint JNICALL cjni_api_register_notification (JNIEnv *jvm_env, /* {{{ */
+ jobject this, jobject o_name, jobject o_notification)
+{
+ user_data_t ud;
+ cjni_callback_info_t *cbi;
+
+ cbi = cjni_callback_info_create (jvm_env, o_name, o_notification,
+ CB_TYPE_NOTIFICATION);
+ if (cbi == NULL)
+ return (-1);
+
+ DEBUG ("java plugin: Registering new notification callback: %s", cbi->name);
+
+ memset (&ud, 0, sizeof (ud));
+ ud.data = (void *) cbi;
+ ud.free_func = cjni_callback_info_destroy;
+
+ plugin_register_notification (cbi->name, cjni_notification, &ud);
+
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_notification);
+
+ return (0);
+} /* }}} jint cjni_api_register_notification */
+
static void JNICALL cjni_api_log (JNIEnv *jvm_env, /* {{{ */
jobject this, jint severity, jobject o_message)
{
"(Lorg/collectd/api/ValueList;)I",
cjni_api_dispatch_values },
+ { "dispatchNotification",
+ "(Lorg/collectd/api/Notification;)I",
+ cjni_api_dispatch_notification },
+
{ "getDS",
"(Ljava/lang/String;)Lorg/collectd/api/DataSet;",
cjni_api_get_ds },
"(Ljava/lang/String;Lorg/collectd/api/CollectdWriteInterface;)I",
cjni_api_register_write },
+ { "registerFlush",
+ "(Ljava/lang/String;Lorg/collectd/api/CollectdFlushInterface;)I",
+ cjni_api_register_flush },
+
{ "registerShutdown",
"(Ljava/lang/String;Lorg/collectd/api/CollectdShutdownInterface;)I",
cjni_api_register_shutdown },
+ { "registerLog",
+ "(Ljava/lang/String;Lorg/collectd/api/CollectdLogInterface;)I",
+ cjni_api_register_log },
+
+ { "registerNotification",
+ "(Ljava/lang/String;Lorg/collectd/api/CollectdNotificationInterface;)I",
+ cjni_api_register_notification },
+
{ "log",
"(ILjava/lang/String;)V",
cjni_api_log },
method_signature = "(Lorg/collectd/api/ValueList;)I";
break;
+ case CB_TYPE_FLUSH:
+ method_name = "flush";
+ method_signature = "(ILjava/lang/String;)I";
+ break;
+
case CB_TYPE_SHUTDOWN:
method_name = "shutdown";
method_signature = "()I";
break;
+ case CB_TYPE_LOG:
+ method_name = "log";
+ method_signature = "(ILjava/lang/String;)V";
+ break;
+
+ case CB_TYPE_NOTIFICATION:
+ method_name = "notification";
+ method_signature = "(LLorg/collectd/api/Notification;)I";
+ break;
+
default:
ERROR ("java plugin: cjni_callback_info_create: Unknown type: %#x",
type);
DEBUG ("java plugin: cjni_callback_info_destroy (arg = %p);", arg);
+ cbi = (cjni_callback_info_t *) arg;
+
+ /* This condition can occurr when shutting down. */
+ if (jvm == NULL)
+ {
+ sfree (cbi);
+ return;
+ }
+
if (arg == NULL)
return;
return;
}
- cbi = (cjni_callback_info_t *) arg;
-
(*jvm_env)->DeleteGlobalRef (jvm_env, cbi->object);
cbi->method = NULL;
JNIEnv *jvm_env;
cjni_callback_info_t *cbi;
int status;
+ int ret_status;
if (jvm == NULL)
{
cbi = (cjni_callback_info_t *) ud->data;
- status = (*jvm_env)->CallIntMethod (jvm_env, cbi->object,
+ ret_status = (*jvm_env)->CallIntMethod (jvm_env, cbi->object,
cbi->method);
status = cjni_thread_detach ();
return (-1);
}
- return (status);
+ return (ret_status);
} /* }}} int cjni_read */
/* Call the CB_TYPE_WRITE callback pointed to by the `user_data_t' pointer. */
cjni_callback_info_t *cbi;
jobject vl_java;
int status;
+ int ret_status;
if (jvm == NULL)
{
return (-1);
}
- status = (*jvm_env)->CallIntMethod (jvm_env,
+ ret_status = (*jvm_env)->CallIntMethod (jvm_env,
cbi->object, cbi->method, vl_java);
(*jvm_env)->DeleteLocalRef (jvm_env, vl_java);
return (-1);
}
- return (status);
+ return (ret_status);
} /* }}} int cjni_write */
+/* Call the CB_TYPE_FLUSH callback pointed to by the `user_data_t' pointer. */
+static int cjni_flush (int timeout, const char *identifier, /* {{{ */
+ user_data_t *ud)
+{
+ JNIEnv *jvm_env;
+ cjni_callback_info_t *cbi;
+ jobject o_identifier;
+ int status;
+ int ret_status;
+
+ if (jvm == NULL)
+ {
+ ERROR ("java plugin: cjni_flush: jvm == NULL");
+ return (-1);
+ }
+
+ if ((ud == NULL) || (ud->data == NULL))
+ {
+ ERROR ("java plugin: cjni_flush: Invalid user data.");
+ return (-1);
+ }
+
+ jvm_env = cjni_thread_attach ();
+ if (jvm_env == NULL)
+ return (-1);
+
+ cbi = (cjni_callback_info_t *) ud->data;
+
+ o_identifier = NULL;
+ if (identifier != NULL)
+ {
+ o_identifier = (*jvm_env)->NewStringUTF (jvm_env, identifier);
+ if (o_identifier == NULL)
+ {
+ ERROR ("java plugin: cjni_flush: NewStringUTF failed.");
+ return (-1);
+ }
+ }
+
+ ret_status = (*jvm_env)->CallIntMethod (jvm_env,
+ cbi->object, cbi->method, (jint) timeout, o_identifier);
+
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_identifier);
+
+ status = cjni_thread_detach ();
+ if (status != 0)
+ {
+ ERROR ("java plugin: cjni_flush: cjni_thread_detach failed.");
+ return (-1);
+ }
+
+ return (ret_status);
+} /* }}} int cjni_flush */
+
+/* Call the CB_TYPE_LOG callback pointed to by the `user_data_t' pointer. */
+static void cjni_log (int severity, const char *message, /* {{{ */
+ user_data_t *ud)
+{
+ JNIEnv *jvm_env;
+ cjni_callback_info_t *cbi;
+ jobject o_message;
+
+ if (jvm == NULL)
+ return;
+
+ if ((ud == NULL) || (ud->data == NULL))
+ return;
+
+ jvm_env = cjni_thread_attach ();
+ if (jvm_env == NULL)
+ return;
+
+ cbi = (cjni_callback_info_t *) ud->data;
+
+ o_message = (*jvm_env)->NewStringUTF (jvm_env, message);
+ if (o_message == NULL)
+ return;
+
+ (*jvm_env)->CallVoidMethod (jvm_env,
+ cbi->object, cbi->method, (jint) severity, o_message);
+
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_message);
+
+ cjni_thread_detach ();
+} /* }}} void cjni_log */
+
+/* Call the CB_TYPE_NOTIFICATION callback pointed to by the `user_data_t'
+ * pointer. */
+static int cjni_notification (const notification_t *n, /* {{{ */
+ user_data_t *ud)
+{
+ JNIEnv *jvm_env;
+ cjni_callback_info_t *cbi;
+ jobject o_notification;
+ int status;
+ int ret_status;
+
+ if (jvm == NULL)
+ {
+ ERROR ("java plugin: cjni_read: jvm == NULL");
+ return (-1);
+ }
+
+ if ((ud == NULL) || (ud->data == NULL))
+ {
+ ERROR ("java plugin: cjni_read: Invalid user data.");
+ return (-1);
+ }
+
+ jvm_env = cjni_thread_attach ();
+ if (jvm_env == NULL)
+ return (-1);
+
+ cbi = (cjni_callback_info_t *) ud->data;
+
+ o_notification = ctoj_notification (jvm_env, n);
+ if (o_notification == NULL)
+ {
+ ERROR ("java plugin: cjni_notification: ctoj_notification failed.");
+ return (-1);
+ }
+
+ ret_status = (*jvm_env)->CallIntMethod (jvm_env,
+ cbi->object, cbi->method, o_notification);
+
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_notification);
+
+ status = cjni_thread_detach ();
+ if (status != 0)
+ {
+ ERROR ("java plugin: cjni_read: cjni_thread_detach failed.");
+ return (-1);
+ }
+
+ return (ret_status);
+} /* }}} int cjni_notification */
+
/* Iterate over `java_classes_list' and create one object of each class. This
* will trigger the object's constructors, to the objects can register callback
* methods. */
sfree (java_classes_list);
/* Destroy the JVM */
+ DEBUG ("java plugin: Destroying the JVM.");
(*jvm)->DestroyJavaVM (jvm);
jvm = NULL;
jvm_env = NULL;
jclass api_class_ptr;
int status;
- api_class_ptr = (*jvm_env)->FindClass (jvm_env, "org.collectd.api.CollectdAPI");
+ api_class_ptr = (*jvm_env)->FindClass (jvm_env, "org.collectd.api.Collectd");
if (api_class_ptr == NULL)
{
- ERROR ("cjni_init_native: Cannot find API class `org.collectd.api.CollectdAPI'.");
+ ERROR ("cjni_init_native: Cannot find API class `org.collectd.api.Collectd'.");
return (-1);
}
projects / collectd.git / blobdiff