2 * collectd - src/java.c
3 * Copyright (C) 2009 Florian octo Forster
4 * Copyright (C) 2008 Justo Alonso Achaques
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; only version 2 of the License is applicable.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * Florian octo Forster <octo at verplant.org>
21 * Justo Alonso Achaques <justo.alonso at gmail.com>
31 #if !defined(JNI_VERSION_1_2)
32 # error "Need JNI 1.2 compatible interface!"
38 struct java_plugin_s /* {{{ */
46 #define CJNI_FLAG_ENABLED 0x0001
55 typedef struct java_plugin_s java_plugin_t;
61 static JavaVM *jvm = NULL;
63 static char **jvm_argv = NULL;
64 static size_t jvm_argc = 0;
66 static java_plugin_t *java_plugins = NULL;
67 static size_t java_plugins_num = 0;
70 * C to Java conversion functions
72 static int ctoj_string (JNIEnv *jvm_env, /* {{{ */
74 jclass class_ptr, jobject object_ptr, const char *method_name)
79 /* Create a java.lang.String */
80 o_string = (*jvm_env)->NewStringUTF (jvm_env,
81 (string != NULL) ? string : "");
84 ERROR ("java plugin: ctoj_string: NewStringUTF failed.");
88 /* Search for the `void setFoo (String s)' method. */
89 m_set = (*jvm_env)->GetMethodID (jvm_env, class_ptr,
90 method_name, "(Ljava/lang/String;)V");
93 ERROR ("java plugin: ctoj_string: Cannot find method `void %s (String)'.",
95 (*jvm_env)->DeleteLocalRef (jvm_env, o_string);
99 /* Call the method. */
100 (*jvm_env)->CallVoidMethod (jvm_env, object_ptr, m_set, o_string);
102 /* Decrease reference counter on the java.lang.String object. */
103 (*jvm_env)->DeleteLocalRef (jvm_env, o_string);
105 DEBUG ("java plugin: ctoj_string: ->%s (%s);",
106 method_name, (string != NULL) ? string : "");
109 } /* }}} int ctoj_string */
111 static int ctoj_int (JNIEnv *jvm_env, /* {{{ */
113 jclass class_ptr, jobject object_ptr, const char *method_name)
117 /* Search for the `void setFoo (int i)' method. */
118 m_set = (*jvm_env)->GetMethodID (jvm_env, class_ptr,
119 method_name, "(I)V");
122 ERROR ("java plugin: ctoj_int: Cannot find method `void %s (int)'.",
127 (*jvm_env)->CallVoidMethod (jvm_env, object_ptr, m_set, value);
129 DEBUG ("java plugin: ctoj_int: ->%s (%i);",
130 method_name, (int) value);
133 } /* }}} int ctoj_int */
135 static int ctoj_long (JNIEnv *jvm_env, /* {{{ */
137 jclass class_ptr, jobject object_ptr, const char *method_name)
141 /* Search for the `void setFoo (long l)' method. */
142 m_set = (*jvm_env)->GetMethodID (jvm_env, class_ptr,
143 method_name, "(J)V");
146 ERROR ("java plugin: ctoj_long: Cannot find method `void %s (long)'.",
151 (*jvm_env)->CallVoidMethod (jvm_env, object_ptr, m_set, value);
153 DEBUG ("java plugin: ctoj_long: ->%s (%"PRIi64");",
154 method_name, (int64_t) value);
157 } /* }}} int ctoj_long */
159 static int ctoj_double (JNIEnv *jvm_env, /* {{{ */
161 jclass class_ptr, jobject object_ptr, const char *method_name)
165 /* Search for the `void setFoo (double d)' method. */
166 m_set = (*jvm_env)->GetMethodID (jvm_env, class_ptr,
167 method_name, "(D)V");
170 ERROR ("java plugin: ctoj_double: Cannot find method `void %s (double)'.",
175 (*jvm_env)->CallVoidMethod (jvm_env, object_ptr, m_set, value);
177 DEBUG ("java plugin: ctoj_double: ->%s (%g);",
178 method_name, (double) value);
181 } /* }}} int ctoj_double */
183 /* Convert a jlong to a java.lang.Number */
184 static jobject ctoj_jlong_to_number (JNIEnv *jvm_env, jlong value) /* {{{ */
187 jmethodID m_long_constructor;
189 /* Look up the java.lang.Long class */
190 c_long = (*jvm_env)->FindClass (jvm_env, "java.lang.Long");
193 ERROR ("java plugin: ctoj_jlong_to_number: Looking up the "
194 "java.lang.Long class failed.");
198 m_long_constructor = (*jvm_env)->GetMethodID (jvm_env,
199 c_long, "<init>", "(J)V");
200 if (m_long_constructor == NULL)
202 ERROR ("java plugin: ctoj_jlong_to_number: Looking up the "
203 "`Long (long)' constructor failed.");
207 return ((*jvm_env)->NewObject (jvm_env,
208 c_long, m_long_constructor, value));
209 } /* }}} jobject ctoj_jlong_to_number */
211 /* Convert a jdouble to a java.lang.Number */
212 static jobject ctoj_jdouble_to_number (JNIEnv *jvm_env, jdouble value) /* {{{ */
215 jmethodID m_double_constructor;
217 /* Look up the java.lang.Long class */
218 c_double = (*jvm_env)->FindClass (jvm_env, "java.lang.Double");
219 if (c_double == NULL)
221 ERROR ("java plugin: ctoj_jdouble_to_number: Looking up the "
222 "java.lang.Double class failed.");
226 m_double_constructor = (*jvm_env)->GetMethodID (jvm_env,
227 c_double, "<init>", "(D)V");
228 if (m_double_constructor == NULL)
230 ERROR ("java plugin: ctoj_jdouble_to_number: Looking up the "
231 "`Double (double)' constructor failed.");
235 return ((*jvm_env)->NewObject (jvm_env,
236 c_double, m_double_constructor, value));
237 } /* }}} jobject ctoj_jdouble_to_number */
239 /* Convert a value_t to a java.lang.Number */
240 static jobject ctoj_value_to_number (JNIEnv *jvm_env, /* {{{ */
241 value_t value, int ds_type)
243 if (ds_type == DS_TYPE_COUNTER)
244 return (ctoj_jlong_to_number (jvm_env, (jlong) value.counter));
245 else if (ds_type == DS_TYPE_GAUGE)
246 return (ctoj_jdouble_to_number (jvm_env, (jdouble) value.gauge));
249 } /* }}} jobject ctoj_value_to_number */
251 /* Convert a data_source_t to a org.collectd.protocol.DataSource */
252 static jobject ctoj_data_source (JNIEnv *jvm_env, /* {{{ */
253 const data_source_t *dsrc)
256 jmethodID m_datasource_constructor;
257 jobject o_datasource;
260 /* Look up the DataSource class */
261 c_datasource = (*jvm_env)->FindClass (jvm_env,
262 "org.collectd.protocol.DataSource");
263 if (c_datasource == NULL)
265 ERROR ("java plugin: ctoj_data_source: "
266 "FindClass (org.collectd.protocol.DataSource) failed.");
270 /* Lookup the `ValueList ()' constructor. */
271 m_datasource_constructor = (*jvm_env)->GetMethodID (jvm_env, c_datasource,
273 if (m_datasource_constructor == NULL)
275 ERROR ("java plugin: ctoj_data_source: Cannot find the "
276 "`DataSource ()' constructor.");
280 /* Create a new instance. */
281 o_datasource = (*jvm_env)->NewObject (jvm_env, c_datasource,
282 m_datasource_constructor);
283 if (o_datasource == NULL)
285 ERROR ("java plugin: ctoj_data_source: "
286 "Creating a new DataSource instance failed.");
290 /* Set name via `void setName (String name)' */
291 status = ctoj_string (jvm_env, dsrc->name,
292 c_datasource, o_datasource, "setName");
295 ERROR ("java plugin: ctoj_data_source: "
296 "ctoj_string (setName) failed.");
297 (*jvm_env)->DeleteLocalRef (jvm_env, o_datasource);
301 /* Set type via `void setType (int type)' */
302 status = ctoj_int (jvm_env, dsrc->type,
303 c_datasource, o_datasource, "setType");
306 ERROR ("java plugin: ctoj_data_source: "
307 "ctoj_int (setType) failed.");
308 (*jvm_env)->DeleteLocalRef (jvm_env, o_datasource);
312 /* Set min via `void setMin (double min)' */
313 status = ctoj_double (jvm_env, dsrc->min,
314 c_datasource, o_datasource, "setMin");
317 ERROR ("java plugin: ctoj_data_source: "
318 "ctoj_double (setMin) failed.");
319 (*jvm_env)->DeleteLocalRef (jvm_env, o_datasource);
323 /* Set max via `void setMax (double max)' */
324 status = ctoj_double (jvm_env, dsrc->max,
325 c_datasource, o_datasource, "setMax");
328 ERROR ("java plugin: ctoj_data_source: "
329 "ctoj_double (setMax) failed.");
330 (*jvm_env)->DeleteLocalRef (jvm_env, o_datasource);
334 return (o_datasource);
335 } /* }}} jobject ctoj_data_source */
337 /* Convert a oconfig_value_t to a org.collectd.api.OConfigValue */
338 static jobject ctoj_oconfig_value (JNIEnv *jvm_env, /* {{{ */
339 oconfig_value_t ocvalue)
342 jmethodID m_ocvalue_constructor;
346 m_ocvalue_constructor = NULL;
349 c_ocvalue = (*jvm_env)->FindClass (jvm_env,
350 "org.collectd.api.OConfigValue");
351 if (c_ocvalue == NULL)
353 ERROR ("java plugin: ctoj_oconfig_value: "
354 "FindClass (org.collectd.api.OConfigValue) failed.");
358 if (ocvalue.type == OCONFIG_TYPE_BOOLEAN)
360 jboolean tmp_boolean;
362 tmp_boolean = (ocvalue.value.boolean == 0) ? JNI_FALSE : JNI_TRUE;
364 m_ocvalue_constructor = (*jvm_env)->GetMethodID (jvm_env, c_ocvalue,
366 if (m_ocvalue_constructor == NULL)
368 ERROR ("java plugin: ctoj_oconfig_value: Cannot find the "
369 "`OConfigValue (boolean)' constructor.");
373 return ((*jvm_env)->NewObject (jvm_env,
374 c_ocvalue, m_ocvalue_constructor, tmp_boolean));
375 } /* if (ocvalue.type == OCONFIG_TYPE_BOOLEAN) */
376 else if (ocvalue.type == OCONFIG_TYPE_STRING)
378 m_ocvalue_constructor = (*jvm_env)->GetMethodID (jvm_env, c_ocvalue,
379 "<init>", "(Ljava/lang/String;)V");
380 if (m_ocvalue_constructor == NULL)
382 ERROR ("java plugin: ctoj_oconfig_value: Cannot find the "
383 "`OConfigValue (String)' constructor.");
387 o_argument = (*jvm_env)->NewStringUTF (jvm_env, ocvalue.value.string);
388 if (o_argument == NULL)
390 ERROR ("java plugin: ctoj_oconfig_value: "
391 "Creating a String object failed.");
395 else if (ocvalue.type == OCONFIG_TYPE_NUMBER)
397 m_ocvalue_constructor = (*jvm_env)->GetMethodID (jvm_env, c_ocvalue,
398 "<init>", "(Ljava/lang/Number;)V");
399 if (m_ocvalue_constructor == NULL)
401 ERROR ("java plugin: ctoj_oconfig_value: Cannot find the "
402 "`OConfigValue (Number)' constructor.");
406 o_argument = ctoj_jdouble_to_number (jvm_env,
407 (jdouble) ocvalue.value.number);
408 if (o_argument == NULL)
410 ERROR ("java plugin: ctoj_oconfig_value: "
411 "Creating a Number object failed.");
420 assert (m_ocvalue_constructor != NULL);
421 assert (o_argument != NULL);
423 o_ocvalue = (*jvm_env)->NewObject (jvm_env,
424 c_ocvalue, m_ocvalue_constructor, o_argument);
425 if (o_ocvalue == NULL)
427 ERROR ("java plugin: ctoj_oconfig_value: "
428 "Creating an OConfigValue object failed.");
429 (*jvm_env)->DeleteLocalRef (jvm_env, o_argument);
433 (*jvm_env)->DeleteLocalRef (jvm_env, o_argument);
435 } /* }}} jobject ctoj_oconfig_value */
437 /* Convert a oconfig_item_t to a org.collectd.api.OConfigItem */
438 static jobject ctoj_oconfig_item (JNIEnv *jvm_env, /* {{{ */
439 const oconfig_item_t *ci)
442 jmethodID m_ocitem_constructor;
443 jmethodID m_addvalue;
444 jmethodID m_addchild;
449 c_ocitem = (*jvm_env)->FindClass (jvm_env, "org.collectd.api.OConfigItem");
450 if (c_ocitem == NULL)
452 ERROR ("java plugin: ctoj_oconfig_item: "
453 "FindClass (org.collectd.api.OConfigItem) failed.");
457 /* Get the required methods: m_ocitem_constructor, m_addvalue, and m_addchild
459 m_ocitem_constructor = (*jvm_env)->GetMethodID (jvm_env, c_ocitem,
460 "<init>", "(Ljava/lang/String;)V");
461 if (m_ocitem_constructor == NULL)
463 ERROR ("java plugin: ctoj_oconfig_item: Cannot find the "
464 "`OConfigItem (String)' constructor.");
468 m_addvalue = (*jvm_env)->GetMethodID (jvm_env, c_ocitem,
469 "addValue", "(Lorg/collectd/api/OConfigValue;)V");
470 if (m_addvalue == NULL)
472 ERROR ("java plugin: ctoj_oconfig_item: Cannot find the "
473 "`addValue (OConfigValue)' method.");
477 m_addchild = (*jvm_env)->GetMethodID (jvm_env, c_ocitem,
478 "addChild", "(Lorg/collectd/api/OConfigItem;)V");
479 if (m_addchild == NULL)
481 ERROR ("java plugin: ctoj_oconfig_item: Cannot find the "
482 "`addChild (OConfigItem)' method.");
487 /* Create a String object with the key.
488 * Needed for calling the constructor. */
489 o_key = (*jvm_env)->NewStringUTF (jvm_env, ci->key);
492 ERROR ("java plugin: ctoj_oconfig_item: "
493 "Creating String object failed.");
497 /* Create an OConfigItem object */
498 o_ocitem = (*jvm_env)->NewObject (jvm_env,
499 c_ocitem, m_ocitem_constructor, o_key);
500 if (o_ocitem == NULL)
502 ERROR ("java plugin: ctoj_oconfig_item: "
503 "Creating an OConfigItem object failed.");
504 (*jvm_env)->DeleteLocalRef (jvm_env, o_key);
508 /* We don't need the String object any longer.. */
509 (*jvm_env)->DeleteLocalRef (jvm_env, o_key);
511 /* Call OConfigItem.addValue for each value */
512 for (i = 0; i < ci->values_num; i++) /* {{{ */
516 o_value = ctoj_oconfig_value (jvm_env, ci->values[i]);
519 ERROR ("java plugin: ctoj_oconfig_item: "
520 "Creating an OConfigValue object failed.");
521 (*jvm_env)->DeleteLocalRef (jvm_env, o_ocitem);
525 (*jvm_env)->CallVoidMethod (jvm_env, o_ocitem, m_addvalue, o_value);
526 (*jvm_env)->DeleteLocalRef (jvm_env, o_value);
527 } /* }}} for (i = 0; i < ci->values_num; i++) */
529 /* Call OConfigItem.addChild for each child */
530 for (i = 0; i < ci->children_num; i++) /* {{{ */
534 o_child = ctoj_oconfig_item (jvm_env, ci->children + i);
537 ERROR ("java plugin: ctoj_oconfig_item: "
538 "Creating an OConfigItem object failed.");
539 (*jvm_env)->DeleteLocalRef (jvm_env, o_ocitem);
543 (*jvm_env)->CallVoidMethod (jvm_env, o_ocitem, m_addvalue, o_child);
544 (*jvm_env)->DeleteLocalRef (jvm_env, o_child);
545 } /* }}} for (i = 0; i < ci->children_num; i++) */
548 } /* }}} jobject ctoj_oconfig_item */
550 /* Convert a data_set_t to a java.util.List<DataSource> */
551 static jobject ctoj_data_set (JNIEnv *jvm_env, const data_set_t *ds) /* {{{ */
554 jmethodID m_constructor;
559 /* Look up the java.util.ArrayList class */
560 c_arraylist = (*jvm_env)->FindClass (jvm_env, "java.util.ArrayList");
561 if (c_arraylist == NULL)
563 ERROR ("java plugin: ctoj_data_set: Looking up the "
564 "java.util.ArrayList class failed.");
568 /* Search for the `ArrayList (int capacity)' constructor. */
569 m_constructor = (*jvm_env)->GetMethodID (jvm_env,
570 c_arraylist, "<init>", "()V");
571 if (m_constructor == NULL)
573 ERROR ("java plugin: ctoj_data_set: Looking up the "
574 "`ArrayList (void)' constructor failed.");
578 /* Search for the `boolean add (Object element)' method. */
579 m_add = (*jvm_env)->GetMethodID (jvm_env,
580 c_arraylist, "add", "(Ljava/lang/Object;)Z");
583 ERROR ("java plugin: ctoj_data_set: Looking up the "
584 "`add (Object)' method failed.");
588 o_dataset = (*jvm_env)->NewObject (jvm_env, c_arraylist, m_constructor);
589 if (o_dataset == NULL)
591 ERROR ("java plugin: ctoj_data_set: "
592 "Creating an ArrayList object failed.");
596 for (i = 0; i < ds->ds_num; i++)
598 jobject o_datasource;
601 o_datasource = ctoj_data_source (jvm_env, ds->ds + i);
602 if (o_datasource == NULL)
604 ERROR ("java plugin: ctoj_data_set: ctoj_data_source (%s.%s) failed",
605 ds->type, ds->ds[i].name);
606 (*jvm_env)->DeleteLocalRef (jvm_env, o_dataset);
610 status = (*jvm_env)->CallBooleanMethod (jvm_env,
611 o_dataset, m_add, o_datasource);
614 ERROR ("java plugin: ctoj_data_set: ArrayList.add returned FALSE.");
615 (*jvm_env)->DeleteLocalRef (jvm_env, o_datasource);
616 (*jvm_env)->DeleteLocalRef (jvm_env, o_dataset);
620 (*jvm_env)->DeleteLocalRef (jvm_env, o_datasource);
621 } /* for (i = 0; i < ds->ds_num; i++) */
624 } /* }}} jobject ctoj_data_set */
626 static int ctoj_value_list_add_value (JNIEnv *jvm_env, /* {{{ */
627 value_t value, int ds_type,
628 jclass class_ptr, jobject object_ptr)
630 jmethodID m_addvalue;
633 m_addvalue = (*jvm_env)->GetMethodID (jvm_env, class_ptr,
634 "addValue", "(Ljava/lang/Number;)V");
635 if (m_addvalue == NULL)
637 ERROR ("java plugin: ctoj_value_list_add_value: "
638 "Cannot find method `void addValue (Number)'.");
642 o_number = ctoj_value_to_number (jvm_env, value, ds_type);
643 if (o_number == NULL)
645 ERROR ("java plugin: ctoj_value_list_add_value: "
646 "ctoj_value_to_number failed.");
650 (*jvm_env)->CallVoidMethod (jvm_env, object_ptr, m_addvalue, o_number);
652 (*jvm_env)->DeleteLocalRef (jvm_env, o_number);
655 } /* }}} int ctoj_value_list_add_value */
657 static int ctoj_value_list_add_data_set (JNIEnv *jvm_env, /* {{{ */
658 jclass c_valuelist, jobject o_valuelist, const data_set_t *ds)
660 jmethodID m_setdatasource;
663 /* Look for the `void setDataSource (List<DataSource> ds)' method. */
664 m_setdatasource = (*jvm_env)->GetMethodID (jvm_env, c_valuelist,
665 "setDataSource", "(Ljava/util/List;)V");
666 if (m_setdatasource == NULL)
668 ERROR ("java plugin: ctoj_value_list_add_data_set: "
669 "Cannot find the `void setDataSource (List<DataSource> ds)' method.");
673 /* Create a List<DataSource> object. */
674 o_dataset = ctoj_data_set (jvm_env, ds);
675 if (o_dataset == NULL)
677 ERROR ("java plugin: ctoj_value_list_add_data_set: "
678 "ctoj_data_set (%s) failed.", ds->type);
682 /* Actually call the method. */
683 (*jvm_env)->CallVoidMethod (jvm_env,
684 o_valuelist, m_setdatasource, o_dataset);
686 /* Decrease reference counter on the List<DataSource> object. */
687 (*jvm_env)->DeleteLocalRef (jvm_env, o_dataset);
690 } /* }}} int ctoj_value_list_add_data_set */
692 static jobject ctoj_value_list (JNIEnv *jvm_env, /* {{{ */
693 const data_set_t *ds, const value_list_t *vl)
696 jmethodID m_valuelist_constructor;
701 /* First, create a new ValueList instance..
702 * Look up the class.. */
703 c_valuelist = (*jvm_env)->FindClass (jvm_env,
704 "org.collectd.protocol.ValueList");
705 if (c_valuelist == NULL)
707 ERROR ("java plugin: ctoj_value_list: "
708 "FindClass (org.collectd.protocol.ValueList) failed.");
712 /* Lookup the `ValueList ()' constructor. */
713 m_valuelist_constructor = (*jvm_env)->GetMethodID (jvm_env, c_valuelist,
715 if (m_valuelist_constructor == NULL)
717 ERROR ("java plugin: ctoj_value_list: Cannot find the "
718 "`ValueList ()' constructor.");
722 /* Create a new instance. */
723 o_valuelist = (*jvm_env)->NewObject (jvm_env, c_valuelist,
724 m_valuelist_constructor);
725 if (o_valuelist == NULL)
727 ERROR ("java plugin: ctoj_value_list: Creating a new ValueList instance "
732 status = ctoj_value_list_add_data_set (jvm_env,
733 c_valuelist, o_valuelist, ds);
736 ERROR ("java plugin: ctoj_value_list: "
737 "ctoj_value_list_add_data_set failed.");
738 (*jvm_env)->DeleteLocalRef (jvm_env, o_valuelist);
742 /* Set the strings.. */
743 #define SET_STRING(str,method_name) do { \
744 status = ctoj_string (jvm_env, str, \
745 c_valuelist, o_valuelist, method_name); \
747 ERROR ("java plugin: ctoj_value_list: jtoc_string (%s) failed.", \
749 (*jvm_env)->DeleteLocalRef (jvm_env, o_valuelist); \
753 SET_STRING (vl->host, "setHost");
754 SET_STRING (vl->plugin, "setPlugin");
755 SET_STRING (vl->plugin_instance, "setPluginInstance");
756 SET_STRING (vl->type, "setType");
757 SET_STRING (vl->type_instance, "setTypeInstance");
761 /* Set the `time' member. Java stores time in milliseconds. */
762 status = ctoj_long (jvm_env, ((jlong) vl->time) * ((jlong) 1000),
763 c_valuelist, o_valuelist, "setTime");
766 ERROR ("java plugin: ctoj_value_list: ctoj_long (setTime) failed.");
767 (*jvm_env)->DeleteLocalRef (jvm_env, o_valuelist);
771 /* Set the `interval' member.. */
772 status = ctoj_long (jvm_env, (jlong) vl->interval,
773 c_valuelist, o_valuelist, "setInterval");
776 ERROR ("java plugin: ctoj_value_list: ctoj_long (setInterval) failed.");
777 (*jvm_env)->DeleteLocalRef (jvm_env, o_valuelist);
781 for (i = 0; i < vl->values_len; i++)
783 status = ctoj_value_list_add_value (jvm_env, vl->values[i], ds->ds[i].type,
784 c_valuelist, o_valuelist);
787 ERROR ("java plugin: ctoj_value_list: "
788 "ctoj_value_list_add_value failed.");
789 (*jvm_env)->DeleteLocalRef (jvm_env, o_valuelist);
794 return (o_valuelist);
795 } /* }}} int ctoj_value_list */
798 * Java to C conversion functions
800 static int jtoc_string (JNIEnv *jvm_env, /* {{{ */
801 char *buffer, size_t buffer_size,
802 jclass class_ptr, jobject object_ptr, const char *method_name)
808 method_id = (*jvm_env)->GetMethodID (jvm_env, class_ptr,
809 method_name, "()Ljava/lang/String;");
810 if (method_id == NULL)
812 ERROR ("java plugin: jtoc_string: Cannot find method `String %s ()'.",
817 string_obj = (*jvm_env)->CallObjectMethod (jvm_env, object_ptr, method_id);
818 if (string_obj == NULL)
820 ERROR ("java plugin: jtoc_string: CallObjectMethod (%s) failed.",
825 c_str = (*jvm_env)->GetStringUTFChars (jvm_env, string_obj, 0);
828 ERROR ("java plugin: jtoc_string: GetStringUTFChars failed.");
829 (*jvm_env)->DeleteLocalRef (jvm_env, string_obj);
833 DEBUG ("java plugin: jtoc_string: ->%s() = %s", method_name, c_str);
835 sstrncpy (buffer, c_str, buffer_size);
837 (*jvm_env)->ReleaseStringUTFChars (jvm_env, string_obj, c_str);
838 (*jvm_env)->DeleteLocalRef (jvm_env, string_obj);
841 } /* }}} int jtoc_string */
843 static int jtoc_long (JNIEnv *jvm_env, /* {{{ */
845 jclass class_ptr, jobject object_ptr, const char *method_name)
849 method_id = (*jvm_env)->GetMethodID (jvm_env, class_ptr,
851 if (method_id == NULL)
853 ERROR ("java plugin: jtoc_long: Cannot find method `long %s ()'.",
858 *ret_value = (*jvm_env)->CallLongMethod (jvm_env, object_ptr, method_id);
860 DEBUG ("java plugin: jtoc_long: ->%s() = %li",
861 method_name, (long int) *ret_value);
864 } /* }}} int jtoc_long */
866 static int jtoc_double (JNIEnv *jvm_env, /* {{{ */
868 jclass class_ptr, jobject object_ptr, const char *method_name)
872 method_id = (*jvm_env)->GetMethodID (jvm_env, class_ptr,
874 if (method_id == NULL)
876 ERROR ("java plugin: jtoc_string: Cannot find method `double %s ()'.",
881 *ret_value = (*jvm_env)->CallDoubleMethod (jvm_env, object_ptr, method_id);
883 DEBUG ("java plugin: jtoc_double: ->%s() = %g",
884 method_name, (double) *ret_value);
887 } /* }}} int jtoc_double */
889 static int jtoc_value (JNIEnv *jvm_env, /* {{{ */
890 value_t *ret_value, int ds_type, jobject object_ptr)
895 class_ptr = (*jvm_env)->GetObjectClass (jvm_env, object_ptr);
897 if (ds_type == DS_TYPE_COUNTER)
901 status = jtoc_long (jvm_env, &tmp_long,
902 class_ptr, object_ptr, "longValue");
905 ERROR ("java plugin: jtoc_value: "
906 "jtoc_long failed.");
909 (*ret_value).counter = (counter_t) tmp_long;
915 status = jtoc_double (jvm_env, &tmp_double,
916 class_ptr, object_ptr, "doubleValue");
919 ERROR ("java plugin: jtoc_value: "
920 "jtoc_double failed.");
923 (*ret_value).gauge = (gauge_t) tmp_double;
927 } /* }}} int jtoc_value */
929 static int jtoc_values_array (JNIEnv *jvm_env, /* {{{ */
930 const data_set_t *ds, value_list_t *vl,
931 jclass class_ptr, jobject object_ptr)
933 jmethodID m_getvalues;
936 jobjectArray o_number_array;
942 values_num = ds->ds_num;
945 o_number_array = NULL;
948 #define BAIL_OUT(status) \
950 if (o_number_array != NULL) \
951 (*jvm_env)->DeleteLocalRef (jvm_env, o_number_array); \
952 if (o_list != NULL) \
953 (*jvm_env)->DeleteLocalRef (jvm_env, o_list); \
956 /* Call: List<Number> ValueList.getValues () */
957 m_getvalues = (*jvm_env)->GetMethodID (jvm_env, class_ptr,
958 "getValues", "()Ljava/util/List;");
959 if (m_getvalues == NULL)
961 ERROR ("java plugin: jtoc_values_array: "
962 "Cannot find method `List getValues ()'.");
966 o_list = (*jvm_env)->CallObjectMethod (jvm_env, object_ptr, m_getvalues);
969 ERROR ("java plugin: jtoc_values_array: "
970 "CallObjectMethod (getValues) failed.");
974 /* Call: Number[] List.toArray () */
975 m_toarray = (*jvm_env)->GetMethodID (jvm_env,
976 (*jvm_env)->GetObjectClass (jvm_env, o_list),
977 "toArray", "()[Ljava/lang/Object;");
978 if (m_toarray == NULL)
980 ERROR ("java plugin: jtoc_values_array: "
981 "Cannot find method `Object[] toArray ()'.");
985 o_number_array = (*jvm_env)->CallObjectMethod (jvm_env, o_list, m_toarray);
986 if (o_number_array == NULL)
988 ERROR ("java plugin: jtoc_values_array: "
989 "CallObjectMethod (toArray) failed.");
993 values = calloc (values_num, sizeof (value_t));
996 ERROR ("java plugin: jtoc_values_array: calloc failed.");
1000 for (i = 0; i < values_num; i++)
1005 o_number = (*jvm_env)->GetObjectArrayElement (jvm_env,
1006 o_number_array, (jsize) i);
1007 if (o_number == NULL)
1009 ERROR ("java plugin: jtoc_values_array: "
1010 "GetObjectArrayElement (%i) failed.", i);
1014 status = jtoc_value (jvm_env, values + i, ds->ds[i].type, o_number);
1017 ERROR ("java plugin: jtoc_values_array: "
1018 "jtoc_value (%i) failed.", i);
1021 } /* for (i = 0; i < values_num; i++) */
1023 vl->values = values;
1024 vl->values_len = values_num;
1027 (*jvm_env)->DeleteLocalRef (jvm_env, o_number_array);
1028 (*jvm_env)->DeleteLocalRef (jvm_env, o_list);
1030 } /* }}} int jtoc_values_array */
1032 /* Convert a org.collectd.protocol.ValueList to a value_list_t. */
1033 static int jtoc_value_list (JNIEnv *jvm_env, value_list_t *vl, /* {{{ */
1039 const data_set_t *ds;
1041 class_ptr = (*jvm_env)->GetObjectClass (jvm_env, object_ptr);
1042 if (class_ptr == NULL)
1044 ERROR ("java plugin: jtoc_value_list: GetObjectClass failed.");
1048 #define SET_STRING(buffer,method) do { \
1049 status = jtoc_string (jvm_env, buffer, sizeof (buffer), \
1050 class_ptr, object_ptr, method); \
1051 if (status != 0) { \
1052 ERROR ("java plugin: jtoc_value_list: jtoc_string (%s) failed.", \
1057 SET_STRING(vl->type, "getType");
1059 ds = plugin_get_ds (vl->type);
1062 ERROR ("java plugin: jtoc_value_list: Data-set `%s' is not defined. "
1063 "Please consult the types.db(5) manpage for mor information.",
1068 SET_STRING(vl->host, "getHost");
1069 SET_STRING(vl->plugin, "getPlugin");
1070 SET_STRING(vl->plugin_instance, "getPluginInstance");
1071 SET_STRING(vl->type_instance, "getTypeInstance");
1075 status = jtoc_long (jvm_env, &tmp_long, class_ptr, object_ptr, "getTime");
1078 ERROR ("java plugin: jtoc_value_list: jtoc_long (getTime) failed.");
1081 /* Java measures time in milliseconds. */
1082 vl->time = (time_t) (tmp_long / ((jlong) 1000));
1084 status = jtoc_long (jvm_env, &tmp_long,
1085 class_ptr, object_ptr, "getInterval");
1088 ERROR ("java plugin: jtoc_value_list: jtoc_long (getInterval) failed.");
1091 vl->interval = (int) tmp_long;
1093 status = jtoc_values_array (jvm_env, ds, vl, class_ptr, object_ptr);
1096 ERROR ("java plugin: jtoc_value_list: jtoc_values_array failed.");
1101 } /* }}} int jtoc_value_list */
1104 * Functions accessible from Java
1106 static jint JNICALL cjni_api_dispatch_values (JNIEnv *jvm_env, /* {{{ */
1107 jobject this, jobject java_vl)
1109 value_list_t vl = VALUE_LIST_INIT;
1112 DEBUG ("cjni_api_dispatch_values: java_vl = %p;", (void *) java_vl);
1114 status = jtoc_value_list (jvm_env, &vl, java_vl);
1117 ERROR ("java plugin: cjni_api_dispatch_values: jtoc_value_list failed.");
1121 status = plugin_dispatch_values (&vl);
1126 } /* }}} jint cjni_api_dispatch_values */
1128 static jobject JNICALL cjni_api_get_ds (JNIEnv *jvm_env, /* {{{ */
1129 jobject this, jobject o_string_type)
1131 const char *ds_name;
1132 const data_set_t *ds;
1135 ds_name = (*jvm_env)->GetStringUTFChars (jvm_env, o_string_type, 0);
1136 if (ds_name == NULL)
1138 ERROR ("java plugin: cjni_api_get_ds: GetStringUTFChars failed.");
1142 ds = plugin_get_ds (ds_name);
1143 DEBUG ("java plugin: cjni_api_get_ds: "
1144 "plugin_get_ds (%s) = %p;", ds_name, (void *) ds);
1146 (*jvm_env)->ReleaseStringUTFChars (jvm_env, o_string_type, ds_name);
1151 o_dataset = ctoj_data_set (jvm_env, ds);
1153 } /* }}} jint cjni_api_get_ds */
1155 static JNINativeMethod jni_api_functions[] =
1157 { "DispatchValues", "(Lorg/collectd/protocol/ValueList;)I", cjni_api_dispatch_values },
1158 { "GetDS", "(Ljava/lang/String;)Ljava/util/List;", cjni_api_get_ds }
1160 static size_t jni_api_functions_num = sizeof (jni_api_functions)
1161 / sizeof (jni_api_functions[0]);
1166 static int cjni_config_add_jvm_arg (oconfig_item_t *ci) /* {{{ */
1170 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
1172 WARNING ("java plugin: `JVMArg' needs exactly one string argument.");
1176 tmp = (char **) realloc (jvm_argv, sizeof (char *) * (jvm_argc + 1));
1179 ERROR ("java plugin: realloc failed.");
1184 jvm_argv[jvm_argc] = strdup (ci->values[0].value.string);
1185 if (jvm_argv[jvm_argc] == NULL)
1187 ERROR ("java plugin: strdup failed.");
1193 } /* }}} int cjni_config_add_jvm_arg */
1195 static int cjni_config_load_plugin (oconfig_item_t *ci) /* {{{ */
1199 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
1201 WARNING ("java plugin: `LoadPlugin' needs exactly one string argument.");
1205 jp = (java_plugin_t *) realloc (java_plugins,
1206 sizeof (*java_plugins) * (java_plugins_num + 1));
1209 ERROR ("java plugin: realloc failed.");
1213 jp = java_plugins + java_plugins_num;
1215 memset (jp, 0, sizeof (*jp));
1216 jp->class_name = strdup (ci->values[0].value.string);
1217 if (jp->class_name == NULL)
1219 ERROR ("java plugin: strdup failed.");
1223 jp->class_ptr = NULL;
1224 jp->object_ptr = NULL;
1227 jp->m_config = NULL;
1231 jp->m_shutdown = NULL;
1236 } /* }}} int cjni_config_load_plugin */
1238 static int cjni_config_plugin_block (oconfig_item_t *ci) /* {{{ */
1241 const char *class_name;
1243 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
1245 WARNING ("java plugin: `Plugin' blocks "
1246 "need exactly one string argument.");
1250 class_name = ci->values[0].value.string;
1251 for (i = 0; i < java_plugins_num; i++)
1252 if (strcmp (java_plugins[i].class_name, class_name) == 0)
1255 if (i >= java_plugins_num)
1257 WARNING ("java plugin: Configuration block for the `%s' plugin found, "
1258 "but the plugin has not been loaded. Please note, that the class "
1259 "name is case-sensitive!",
1264 if (java_plugins[i].ci != NULL)
1266 WARNING ("java plugin: There are more than one <Plugin> blocks for the "
1267 "`%s' plugin. This is currently not supported - only the first block "
1273 java_plugins[i].ci = oconfig_clone (ci);
1274 if (java_plugins[i].ci == NULL)
1276 ERROR ("java plugin: cjni_config_plugin_block: "
1277 "oconfig_clone failed for `%s'.",
1282 DEBUG ("java plugin: cjni_config_plugin_block: "
1283 "Successfully copied config for `%s'.",
1287 } /* }}} int cjni_config_plugin_block */
1289 static int cjni_config (oconfig_item_t *ci) /* {{{ */
1299 for (i = 0; i < ci->children_num; i++)
1301 oconfig_item_t *child = ci->children + i;
1303 if (strcasecmp ("JVMArg", child->key) == 0)
1305 status = cjni_config_add_jvm_arg (child);
1311 else if (strcasecmp ("LoadPlugin", child->key) == 0)
1313 status = cjni_config_load_plugin (child);
1319 else if (strcasecmp ("Plugin", child->key) == 0)
1321 status = cjni_config_plugin_block (child);
1329 WARNING ("java plugin: Option `%s' not allowed here.", child->key);
1334 if ((success == 0) && (errors > 0))
1336 ERROR ("java plugin: All statements failed.");
1341 } /* }}} int cjni_config */
1343 static int cjni_read_one_plugin (JNIEnv *jvm_env, java_plugin_t *jp) /* {{{ */
1348 || ((jp->flags & CJNI_FLAG_ENABLED) == 0)
1349 || (jp->m_read == NULL))
1352 DEBUG ("java plugin: Calling: %s.Read()", jp->class_name);
1354 status = (*jvm_env)->CallIntMethod (jvm_env, jp->object_ptr,
1358 ERROR ("java plugin: cjni_read_one_plugin: "
1359 "Calling `Read' on an `%s' object failed with status %i.",
1360 jp->class_name, status);
1365 } /* }}} int cjni_read_one_plugin */
1367 static int cjni_read_plugins (JNIEnv *jvm_env) /* {{{ */
1371 for (j = 0; j < java_plugins_num; j++)
1372 cjni_read_one_plugin (jvm_env, &java_plugins[j]);
1375 } /* }}} int cjni_read_plugins */
1377 static int cjni_read (void) /* {{{ */
1380 JavaVMAttachArgs args;
1385 ERROR ("java plugin: cjni_read: jvm == NULL");
1390 memset (&args, 0, sizeof (args));
1391 args.version = JNI_VERSION_1_2;
1393 status = (*jvm)->AttachCurrentThread (jvm, (void **) &jvm_env, &args);
1396 ERROR ("java plugin: cjni_read: AttachCurrentThread failed with status %i.",
1401 cjni_read_plugins (jvm_env);
1403 status = (*jvm)->DetachCurrentThread (jvm);
1406 ERROR ("java plugin: cjni_read: DetachCurrentThread failed with status %i.",
1412 } /* }}} int cjni_read */
1414 static int cjni_write_one_plugin (JNIEnv *jvm_env, /* {{{ */
1415 java_plugin_t *jp, jobject vl_java)
1420 || ((jp->flags & CJNI_FLAG_ENABLED) == 0)
1421 || (jp->m_write == NULL))
1424 DEBUG ("java plugin: Calling: %s.Write(ValueList)", jp->class_name);
1426 status = (*jvm_env)->CallIntMethod (jvm_env, jp->object_ptr,
1427 jp->m_write, vl_java);
1430 ERROR ("java plugin: cjni_write_one_plugin: "
1431 "Calling `Write' on an `%s' object failed with status %i.",
1432 jp->class_name, status);
1437 } /* }}} int cjni_write_one_plugin */
1439 static int cjni_write_plugins (JNIEnv *jvm_env, /* {{{ */
1440 const data_set_t *ds, const value_list_t *vl)
1446 vl_java = ctoj_value_list (jvm_env, ds, vl);
1447 if (vl_java == NULL)
1449 ERROR ("java plugin: cjni_write_plugins: ctoj_value_list failed.");
1453 for (j = 0; j < java_plugins_num; j++)
1454 cjni_write_one_plugin (jvm_env, &java_plugins[j], vl_java);
1456 (*jvm_env)->DeleteLocalRef (jvm_env, vl_java);
1459 } /* }}} int cjni_write_plugins */
1461 static int cjni_write (const data_set_t *ds, const value_list_t *vl) /* {{{ */
1464 JavaVMAttachArgs args;
1469 ERROR ("java plugin: cjni_write: jvm == NULL");
1474 memset (&args, 0, sizeof (args));
1475 args.version = JNI_VERSION_1_2;
1477 status = (*jvm)->AttachCurrentThread (jvm, (void **) &jvm_env, &args);
1480 ERROR ("java plugin: cjni_write: AttachCurrentThread failed with status %i.",
1485 cjni_write_plugins (jvm_env, ds, vl);
1487 status = (*jvm)->DetachCurrentThread (jvm);
1490 ERROR ("java plugin: cjni_write: DetachCurrentThread failed with status %i.",
1496 } /* }}} int cjni_write */
1498 static int cjni_shutdown_one_plugin (JNIEnv *jvm_env, /* {{{ */
1504 || ((jp->flags & CJNI_FLAG_ENABLED) == 0)
1505 || (jp->m_shutdown == NULL))
1508 status = (*jvm_env)->CallIntMethod (jvm_env, jp->object_ptr,
1512 ERROR ("cjni_shutdown_one_plugin: Destroying an `%s' object failed "
1513 "with status %i.", jp->class_name, status);
1516 jp->flags &= ~CJNI_FLAG_ENABLED;
1519 } /* }}} int cjni_shutdown_one_plugin */
1521 static int cjni_shutdown_plugins (JNIEnv *jvm_env) /* {{{ */
1525 for (j = 0; j < java_plugins_num; j++)
1526 cjni_shutdown_one_plugin (jvm_env, &java_plugins[j]);
1529 } /* }}} int cjni_shutdown_plugins */
1531 static int cjni_shutdown (void) /* {{{ */
1534 JavaVMAttachArgs args;
1542 memset (&args, 0, sizeof (args));
1543 args.version = JNI_VERSION_1_2;
1545 status = (*jvm)->AttachCurrentThread (jvm, (void **) &jvm_env, &args);
1548 ERROR ("java plugin: cjni_read: AttachCurrentThread failed with status %i.",
1553 cjni_shutdown_plugins (jvm_env);
1555 (*jvm)->DestroyJavaVM (jvm);
1559 for (i = 0; i < jvm_argc; i++)
1561 sfree (jvm_argv[i]);
1566 for (i = 0; i < java_plugins_num; i++)
1568 sfree (java_plugins[i].class_name);
1569 oconfig_free (java_plugins[i].ci);
1571 sfree (java_plugins);
1572 java_plugins_num = 0;
1575 } /* }}} int cjni_shutdown */
1577 static int cjni_init_one_plugin (JNIEnv *jvm_env, java_plugin_t *jp) /* {{{ */
1579 jmethodID constructor_id;
1582 jp->class_ptr = (*jvm_env)->FindClass (jvm_env, jp->class_name);
1583 if (jp->class_ptr == NULL)
1585 ERROR ("cjni_init_one_plugin: FindClass (%s) failed.",
1590 constructor_id = (*jvm_env)->GetMethodID (jvm_env, jp->class_ptr,
1592 if (constructor_id == NULL)
1594 ERROR ("cjni_init_one_plugin: Could not find the constructor for `%s'.",
1599 jp->object_ptr = (*jvm_env)->NewObject (jvm_env, jp->class_ptr,
1601 if (jp->object_ptr == NULL)
1603 ERROR ("cjni_init_one_plugin: Could create a new `%s' object.",
1608 jp->m_config = (*jvm_env)->GetMethodID (jvm_env, jp->class_ptr,
1609 "Config", "(Lorg/collectd/api/OConfigItem;)I");
1610 DEBUG ("java plugin: cjni_init_one_plugin: "
1611 "jp->class_name = %s; jp->m_config = %p;",
1612 jp->class_name, (void *) jp->m_config);
1614 jp->m_init = (*jvm_env)->GetMethodID (jvm_env, jp->class_ptr,
1616 DEBUG ("java plugin: cjni_init_one_plugin: "
1617 "jp->class_name = %s; jp->m_init = %p;",
1618 jp->class_name, (void *) jp->m_init);
1620 jp->m_read = (*jvm_env)->GetMethodID (jvm_env, jp->class_ptr,
1622 DEBUG ("java plugin: cjni_init_one_plugin: "
1623 "jp->class_name = %s; jp->m_read = %p;",
1624 jp->class_name, (void *) jp->m_read);
1626 jp->m_write = (*jvm_env)->GetMethodID (jvm_env, jp->class_ptr,
1627 "Write", "(Lorg/collectd/protocol/ValueList;)I");
1628 DEBUG ("java plugin: cjni_init_one_plugin: "
1629 "jp->class_name = %s; jp->m_write = %p;",
1630 jp->class_name, (void *) jp->m_write);
1632 jp->m_shutdown = (*jvm_env)->GetMethodID (jvm_env, jp->class_ptr,
1634 DEBUG ("java plugin: cjni_init_one_plugin: "
1635 "jp->class_name = %s; jp->m_shutdown = %p;",
1636 jp->class_name, (void *) jp->m_shutdown);
1640 if (jp->m_config == NULL)
1642 WARNING ("java plugin: Configuration for the `%s' plugin is present, "
1643 "but plugin doesn't provide a configuration method.",
1646 else /* if (jp->m_config != NULL) */
1650 o_ocitem = ctoj_oconfig_item (jvm_env, jp->ci);
1651 if (o_ocitem == NULL)
1653 ERROR ("java plugin: Creating an OConfigItem object failed. "
1654 "Can't pass configuration information to the `%s' plugin!",
1657 else /* if (o_ocitem != NULL) */
1659 status = (*jvm_env)->CallIntMethod (jvm_env,
1660 jp->object_ptr, jp->m_config, o_ocitem);
1663 ERROR ("java plugin: cjni_init_one_plugin: "
1664 "Configuring the `%s' object failed with status %i.",
1665 jp->class_name, status);
1666 (*jvm_env)->DeleteLocalRef (jvm_env, o_ocitem);
1669 (*jvm_env)->DeleteLocalRef (jvm_env, o_ocitem);
1670 } /* if (o_ocitem != NULL) */
1671 } /* if (jp->m_config != NULL) */
1672 } /* if (jp->ci != NULL) */
1674 if (jp->m_init != NULL)
1676 status = (*jvm_env)->CallIntMethod (jvm_env, jp->object_ptr,
1680 ERROR ("java plugin: cjni_init_one_plugin: "
1681 "Initializing `%s' object failed with status %i.",
1682 jp->class_name, status);
1686 jp->flags |= CJNI_FLAG_ENABLED;
1689 } /* }}} int cjni_init_one_plugin */
1691 static int cjni_init_plugins (JNIEnv *jvm_env) /* {{{ */
1703 for (j = 0; j < java_plugins_num; j++)
1705 cjni_init_one_plugin (jvm_env, &java_plugins[j]);
1707 if (java_plugins[j].m_read != NULL)
1709 if (java_plugins[j].m_write != NULL)
1711 if (java_plugins[j].m_shutdown != NULL)
1716 plugin_register_read ("java", cjni_read);
1718 plugin_register_write ("java", cjni_write);
1719 if (have_shutdown > 0)
1720 plugin_register_shutdown ("java", cjni_shutdown);
1724 } /* }}} int cjni_init_plugins */
1726 static int cjni_init_native (JNIEnv *jvm_env) /* {{{ */
1728 jclass api_class_ptr;
1731 api_class_ptr = (*jvm_env)->FindClass (jvm_env, "org.collectd.api.CollectdAPI");
1732 if (api_class_ptr == NULL)
1734 ERROR ("cjni_init_native: Cannot find API class `org.collectd.api.CollectdAPI'.");
1738 status = (*jvm_env)->RegisterNatives (jvm_env, api_class_ptr,
1739 jni_api_functions, (jint) jni_api_functions_num);
1742 ERROR ("cjni_init_native: RegisterNatives failed with status %i.", status);
1747 } /* }}} int cjni_init_native */
1749 static int cjni_init (void) /* {{{ */
1752 JavaVMInitArgs vm_args;
1753 JavaVMOption vm_options[jvm_argc];
1763 memset (&vm_args, 0, sizeof (vm_args));
1764 vm_args.version = JNI_VERSION_1_2;
1765 vm_args.options = vm_options;
1766 vm_args.nOptions = (jint) jvm_argc;
1768 for (i = 0; i < jvm_argc; i++)
1770 DEBUG ("java plugin: cjni_init: jvm_argv[%zu] = %s", i, jvm_argv[i]);
1771 vm_args.options[i].optionString = jvm_argv[i];
1774 vm_args.options[0].optionString = "-verbose:jni";
1775 vm_args.options[1].optionString = "-Djava.class.path=/home/octo/collectd/bindings/java";
1778 status = JNI_CreateJavaVM (&jvm, (void **) &jvm_env, (void **) &vm_args);
1781 ERROR ("cjni_init: JNI_CreateJavaVM failed with status %i.",
1785 assert (jvm != NULL);
1786 assert (jvm_env != NULL);
1788 /* Call RegisterNatives */
1789 status = cjni_init_native (jvm_env);
1792 ERROR ("cjni_init: cjni_init_native failed.");
1796 cjni_init_plugins (jvm_env);
1799 } /* }}} int cjni_init */
1801 void module_register (void)
1803 plugin_register_complex_config ("java", cjni_config);
1804 plugin_register_init ("java", cjni_init);
1805 } /* void module_register (void) */
1807 /* vim: set sw=2 sts=2 et fdm=marker : */