jclass class_ptr;
jobject object_ptr;
+ oconfig_item_t *ci;
+
#define CJNI_FLAG_ENABLED 0x0001
int flags;
- jmethodID method_init;
- jmethodID method_read;
- jmethodID method_shutdown;
+ jmethodID m_config;
+ jmethodID m_init;
+ jmethodID m_write;
+ jmethodID m_shutdown;
};
typedef struct java_plugin_s java_plugin_t;
/* }}} */
+struct cjni_jvm_env_s /* {{{ */
+{
+ JNIEnv *jvm_env;
+ int reference_counter;
+};
+typedef struct cjni_jvm_env_s cjni_jvm_env_t;
+/* }}} */
+
+struct cjni_callback_info_s /* {{{ */
+{
+ jclass class;
+ jobject object;
+ jmethodID method;
+};
+typedef struct cjni_callback_info_s cjni_callback_info_t;
+/* }}} */
+
/*
* Global variables
*/
static JavaVM *jvm = NULL;
+static pthread_key_t jvm_env_key;
-static java_plugin_t java_plugins[] =
-{
- { "org.collectd.java.Foobar", NULL, NULL, 0, NULL, NULL, NULL }
-};
-static size_t java_plugins_num = sizeof (java_plugins) / sizeof (java_plugins[0]);
+static char **jvm_argv = NULL;
+static size_t jvm_argc = 0;
-/*
- * Conversion functons
+static java_plugin_t *java_plugins = NULL;
+static size_t java_plugins_num = 0;
+
+/*
+ * Prototypes
*
- * - jtoc_*: From Java to C
- * - ctoj_*: From C to Java
+ * Mostly functions that are needed by the Java interface functions.
*/
-static int jtoc_string (JNIEnv *jvm_env, /* {{{ */
- char *buffer, size_t buffer_size,
+static void cjni_callback_info_destroy (void *arg);
+static int cjni_read (user_data_t *user_data);
+
+/*
+ * C to Java conversion functions
+ */
+static int ctoj_string (JNIEnv *jvm_env, /* {{{ */
+ const char *string,
jclass class_ptr, jobject object_ptr, const char *method_name)
{
- jmethodID method_id;
- jobject string_obj;
- const char *c_str;
+ jmethodID m_set;
+ jstring o_string;
- method_id = (*jvm_env)->GetMethodID (jvm_env, class_ptr,
- method_name, "()Ljava/lang/String;");
- if (method_id == NULL)
+ /* Create a java.lang.String */
+ o_string = (*jvm_env)->NewStringUTF (jvm_env,
+ (string != NULL) ? string : "");
+ if (o_string == NULL)
{
- ERROR ("java plugin: jtoc_string: Cannot find method `String %s ()'.",
- method_name);
+ ERROR ("java plugin: ctoj_string: NewStringUTF failed.");
return (-1);
}
- string_obj = (*jvm_env)->CallObjectMethod (jvm_env, object_ptr, method_id);
- if (string_obj == NULL)
+ /* Search for the `void setFoo (String s)' method. */
+ m_set = (*jvm_env)->GetMethodID (jvm_env, class_ptr,
+ method_name, "(Ljava/lang/String;)V");
+ if (m_set == NULL)
{
- ERROR ("java plugin: jtoc_string: CallObjectMethod (%s) failed.",
+ ERROR ("java plugin: ctoj_string: Cannot find method `void %s (String)'.",
method_name);
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_string);
return (-1);
}
- c_str = (*jvm_env)->GetStringUTFChars (jvm_env, string_obj, 0);
- if (c_str == NULL)
+ /* Call the method. */
+ (*jvm_env)->CallVoidMethod (jvm_env, object_ptr, m_set, o_string);
+
+ /* Decrease reference counter on the java.lang.String object. */
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_string);
+
+ return (0);
+} /* }}} int ctoj_string */
+
+static int ctoj_int (JNIEnv *jvm_env, /* {{{ */
+ jint value,
+ jclass class_ptr, jobject object_ptr, const char *method_name)
+{
+ jmethodID m_set;
+
+ /* Search for the `void setFoo (int i)' method. */
+ m_set = (*jvm_env)->GetMethodID (jvm_env, class_ptr,
+ method_name, "(I)V");
+ if (m_set == NULL)
{
- ERROR ("java plugin: jtoc_string: GetStringUTFChars failed.");
- (*jvm_env)->DeleteLocalRef (jvm_env, string_obj);
+ ERROR ("java plugin: ctoj_int: Cannot find method `void %s (int)'.",
+ method_name);
return (-1);
}
- DEBUG ("java plugin: jtoc_string: ->%s() = %s", method_name, c_str);
-
- sstrncpy (buffer, c_str, buffer_size);
-
- (*jvm_env)->ReleaseStringUTFChars (jvm_env, string_obj, c_str);
- (*jvm_env)->DeleteLocalRef (jvm_env, string_obj);
+ (*jvm_env)->CallVoidMethod (jvm_env, object_ptr, m_set, value);
return (0);
-} /* }}} int jtoc_string */
+} /* }}} int ctoj_int */
-static int jtoc_long (JNIEnv *jvm_env, /* {{{ */
- jlong *ret_value,
+static int ctoj_long (JNIEnv *jvm_env, /* {{{ */
+ jlong value,
jclass class_ptr, jobject object_ptr, const char *method_name)
{
- jmethodID method_id;
+ jmethodID m_set;
- method_id = (*jvm_env)->GetMethodID (jvm_env, class_ptr,
- method_name, "()J");
- if (method_id == NULL)
+ /* Search for the `void setFoo (long l)' method. */
+ m_set = (*jvm_env)->GetMethodID (jvm_env, class_ptr,
+ method_name, "(J)V");
+ if (m_set == NULL)
{
- ERROR ("java plugin: jtoc_string: Cannot find method `long %s ()'.",
+ ERROR ("java plugin: ctoj_long: Cannot find method `void %s (long)'.",
method_name);
return (-1);
}
- *ret_value = (*jvm_env)->CallLongMethod (jvm_env, object_ptr, method_id);
-
- DEBUG ("java plugin: jtoc_long: ->%s() = %li",
- method_name, (long int) *ret_value);
+ (*jvm_env)->CallVoidMethod (jvm_env, object_ptr, m_set, value);
return (0);
-} /* }}} int jtoc_long */
+} /* }}} int ctoj_long */
-static int jtoc_double (JNIEnv *jvm_env, /* {{{ */
- jdouble *ret_value,
+static int ctoj_double (JNIEnv *jvm_env, /* {{{ */
+ jdouble value,
jclass class_ptr, jobject object_ptr, const char *method_name)
{
- jmethodID method_id;
+ jmethodID m_set;
- method_id = (*jvm_env)->GetMethodID (jvm_env, class_ptr,
- method_name, "()D");
- if (method_id == NULL)
+ /* Search for the `void setFoo (double d)' method. */
+ m_set = (*jvm_env)->GetMethodID (jvm_env, class_ptr,
+ method_name, "(D)V");
+ if (m_set == NULL)
{
- ERROR ("java plugin: jtoc_string: Cannot find method `double %s ()'.",
+ ERROR ("java plugin: ctoj_double: Cannot find method `void %s (double)'.",
method_name);
return (-1);
}
- *ret_value = (*jvm_env)->CallDoubleMethod (jvm_env, object_ptr, method_id);
-
- DEBUG ("java plugin: jtoc_double: ->%s() = %g",
- method_name, (double) *ret_value);
+ (*jvm_env)->CallVoidMethod (jvm_env, object_ptr, m_set, value);
return (0);
-} /* }}} int jtoc_double */
+} /* }}} int ctoj_double */
-static int jtoc_value (JNIEnv *jvm_env, /* {{{ */
- value_t *ret_value, int ds_type, jobject object_ptr)
+/* Convert a jlong to a java.lang.Number */
+static jobject ctoj_jlong_to_number (JNIEnv *jvm_env, jlong value) /* {{{ */
{
- jclass class_ptr;
- int status;
+ jclass c_long;
+ jmethodID m_long_constructor;
- class_ptr = (*jvm_env)->GetObjectClass (jvm_env, object_ptr);
+ /* Look up the java.lang.Long class */
+ c_long = (*jvm_env)->FindClass (jvm_env, "java.lang.Long");
+ if (c_long == NULL)
+ {
+ ERROR ("java plugin: ctoj_jlong_to_number: Looking up the "
+ "java.lang.Long class failed.");
+ return (NULL);
+ }
+
+ m_long_constructor = (*jvm_env)->GetMethodID (jvm_env,
+ c_long, "<init>", "(J)V");
+ if (m_long_constructor == NULL)
+ {
+ ERROR ("java plugin: ctoj_jlong_to_number: Looking up the "
+ "`Long (long)' constructor failed.");
+ return (NULL);
+ }
+
+ return ((*jvm_env)->NewObject (jvm_env,
+ c_long, m_long_constructor, value));
+} /* }}} jobject ctoj_jlong_to_number */
+
+/* Convert a jdouble to a java.lang.Number */
+static jobject ctoj_jdouble_to_number (JNIEnv *jvm_env, jdouble value) /* {{{ */
+{
+ jclass c_double;
+ jmethodID m_double_constructor;
+
+ /* Look up the java.lang.Long class */
+ c_double = (*jvm_env)->FindClass (jvm_env, "java.lang.Double");
+ if (c_double == NULL)
+ {
+ ERROR ("java plugin: ctoj_jdouble_to_number: Looking up the "
+ "java.lang.Double class failed.");
+ return (NULL);
+ }
+
+ m_double_constructor = (*jvm_env)->GetMethodID (jvm_env,
+ c_double, "<init>", "(D)V");
+ if (m_double_constructor == NULL)
+ {
+ ERROR ("java plugin: ctoj_jdouble_to_number: Looking up the "
+ "`Double (double)' constructor failed.");
+ return (NULL);
+ }
+
+ return ((*jvm_env)->NewObject (jvm_env,
+ c_double, m_double_constructor, value));
+} /* }}} jobject ctoj_jdouble_to_number */
+/* Convert a value_t to a java.lang.Number */
+static jobject ctoj_value_to_number (JNIEnv *jvm_env, /* {{{ */
+ value_t value, int ds_type)
+{
if (ds_type == DS_TYPE_COUNTER)
+ return (ctoj_jlong_to_number (jvm_env, (jlong) value.counter));
+ else if (ds_type == DS_TYPE_GAUGE)
+ return (ctoj_jdouble_to_number (jvm_env, (jdouble) value.gauge));
+ else
+ return (NULL);
+} /* }}} jobject ctoj_value_to_number */
+
+/* Convert a data_source_t to a org.collectd.api.DataSource */
+static jobject ctoj_data_source (JNIEnv *jvm_env, /* {{{ */
+ const data_source_t *dsrc)
+{
+ jclass c_datasource;
+ jmethodID m_datasource_constructor;
+ jobject o_datasource;
+ int status;
+
+ /* Look up the DataSource class */
+ c_datasource = (*jvm_env)->FindClass (jvm_env,
+ "org.collectd.api.DataSource");
+ if (c_datasource == NULL)
{
- jlong tmp_long;
+ ERROR ("java plugin: ctoj_data_source: "
+ "FindClass (org.collectd.api.DataSource) failed.");
+ return (NULL);
+ }
- status = jtoc_long (jvm_env, &tmp_long,
- class_ptr, object_ptr, "longValue");
- if (status != 0)
+ /* Lookup the `ValueList ()' constructor. */
+ m_datasource_constructor = (*jvm_env)->GetMethodID (jvm_env, c_datasource,
+ "<init>", "()V");
+ if (m_datasource_constructor == NULL)
+ {
+ ERROR ("java plugin: ctoj_data_source: Cannot find the "
+ "`DataSource ()' constructor.");
+ return (NULL);
+ }
+
+ /* Create a new instance. */
+ o_datasource = (*jvm_env)->NewObject (jvm_env, c_datasource,
+ m_datasource_constructor);
+ if (o_datasource == NULL)
+ {
+ ERROR ("java plugin: ctoj_data_source: "
+ "Creating a new DataSource instance failed.");
+ return (NULL);
+ }
+
+ /* Set name via `void setName (String name)' */
+ status = ctoj_string (jvm_env, dsrc->name,
+ c_datasource, o_datasource, "setName");
+ if (status != 0)
+ {
+ ERROR ("java plugin: ctoj_data_source: "
+ "ctoj_string (setName) failed.");
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_datasource);
+ return (NULL);
+ }
+
+ /* Set type via `void setType (int type)' */
+ status = ctoj_int (jvm_env, dsrc->type,
+ c_datasource, o_datasource, "setType");
+ if (status != 0)
+ {
+ ERROR ("java plugin: ctoj_data_source: "
+ "ctoj_int (setType) failed.");
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_datasource);
+ return (NULL);
+ }
+
+ /* Set min via `void setMin (double min)' */
+ status = ctoj_double (jvm_env, dsrc->min,
+ c_datasource, o_datasource, "setMin");
+ if (status != 0)
+ {
+ ERROR ("java plugin: ctoj_data_source: "
+ "ctoj_double (setMin) failed.");
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_datasource);
+ return (NULL);
+ }
+
+ /* Set max via `void setMax (double max)' */
+ status = ctoj_double (jvm_env, dsrc->max,
+ c_datasource, o_datasource, "setMax");
+ if (status != 0)
+ {
+ ERROR ("java plugin: ctoj_data_source: "
+ "ctoj_double (setMax) failed.");
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_datasource);
+ return (NULL);
+ }
+
+ return (o_datasource);
+} /* }}} jobject ctoj_data_source */
+
+/* Convert a oconfig_value_t to a org.collectd.api.OConfigValue */
+static jobject ctoj_oconfig_value (JNIEnv *jvm_env, /* {{{ */
+ oconfig_value_t ocvalue)
+{
+ jclass c_ocvalue;
+ jmethodID m_ocvalue_constructor;
+ jobject o_argument;
+ jobject o_ocvalue;
+
+ m_ocvalue_constructor = NULL;
+ o_argument = NULL;
+
+ c_ocvalue = (*jvm_env)->FindClass (jvm_env,
+ "org.collectd.api.OConfigValue");
+ if (c_ocvalue == NULL)
+ {
+ ERROR ("java plugin: ctoj_oconfig_value: "
+ "FindClass (org.collectd.api.OConfigValue) failed.");
+ return (NULL);
+ }
+
+ if (ocvalue.type == OCONFIG_TYPE_BOOLEAN)
+ {
+ jboolean tmp_boolean;
+
+ tmp_boolean = (ocvalue.value.boolean == 0) ? JNI_FALSE : JNI_TRUE;
+
+ m_ocvalue_constructor = (*jvm_env)->GetMethodID (jvm_env, c_ocvalue,
+ "<init>", "(Z)V");
+ if (m_ocvalue_constructor == NULL)
{
- ERROR ("java plugin: jtoc_value: "
- "jtoc_long failed.");
- return (-1);
+ ERROR ("java plugin: ctoj_oconfig_value: Cannot find the "
+ "`OConfigValue (boolean)' constructor.");
+ return (NULL);
}
- (*ret_value).counter = (counter_t) tmp_long;
- }
- else
+
+ return ((*jvm_env)->NewObject (jvm_env,
+ c_ocvalue, m_ocvalue_constructor, tmp_boolean));
+ } /* if (ocvalue.type == OCONFIG_TYPE_BOOLEAN) */
+ else if (ocvalue.type == OCONFIG_TYPE_STRING)
{
- jdouble tmp_double;
+ m_ocvalue_constructor = (*jvm_env)->GetMethodID (jvm_env, c_ocvalue,
+ "<init>", "(Ljava/lang/String;)V");
+ if (m_ocvalue_constructor == NULL)
+ {
+ ERROR ("java plugin: ctoj_oconfig_value: Cannot find the "
+ "`OConfigValue (String)' constructor.");
+ return (NULL);
+ }
- status = jtoc_double (jvm_env, &tmp_double,
- class_ptr, object_ptr, "doubleValue");
- if (status != 0)
+ o_argument = (*jvm_env)->NewStringUTF (jvm_env, ocvalue.value.string);
+ if (o_argument == NULL)
{
- ERROR ("java plugin: jtoc_value: "
- "jtoc_double failed.");
- return (-1);
+ ERROR ("java plugin: ctoj_oconfig_value: "
+ "Creating a String object failed.");
+ return (NULL);
}
- (*ret_value).gauge = (gauge_t) tmp_double;
}
+ else if (ocvalue.type == OCONFIG_TYPE_NUMBER)
+ {
+ m_ocvalue_constructor = (*jvm_env)->GetMethodID (jvm_env, c_ocvalue,
+ "<init>", "(Ljava/lang/Number;)V");
+ if (m_ocvalue_constructor == NULL)
+ {
+ ERROR ("java plugin: ctoj_oconfig_value: Cannot find the "
+ "`OConfigValue (Number)' constructor.");
+ return (NULL);
+ }
- return (0);
-} /* }}} int jtoc_value */
+ o_argument = ctoj_jdouble_to_number (jvm_env,
+ (jdouble) ocvalue.value.number);
+ if (o_argument == NULL)
+ {
+ ERROR ("java plugin: ctoj_oconfig_value: "
+ "Creating a Number object failed.");
+ return (NULL);
+ }
+ }
+ else
+ {
+ return (NULL);
+ }
-static int jtoc_values_array (JNIEnv *jvm_env, /* {{{ */
- const data_set_t *ds, value_list_t *vl,
- jclass class_ptr, jobject object_ptr)
-{
- jmethodID m_getvalues;
- jmethodID m_toarray;
- jobject o_list;
- jobjectArray o_number_array;
+ assert (m_ocvalue_constructor != NULL);
+ assert (o_argument != NULL);
- value_t *values;
- int values_num;
- int i;
+ o_ocvalue = (*jvm_env)->NewObject (jvm_env,
+ c_ocvalue, m_ocvalue_constructor, o_argument);
+ if (o_ocvalue == NULL)
+ {
+ ERROR ("java plugin: ctoj_oconfig_value: "
+ "Creating an OConfigValue object failed.");
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_argument);
+ return (NULL);
+ }
- values_num = ds->ds_num;
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_argument);
+ return (o_ocvalue);
+} /* }}} jobject ctoj_oconfig_value */
- values = NULL;
- o_number_array = NULL;
- o_list = NULL;
+/* Convert a oconfig_item_t to a org.collectd.api.OConfigItem */
+static jobject ctoj_oconfig_item (JNIEnv *jvm_env, /* {{{ */
+ const oconfig_item_t *ci)
+{
+ jclass c_ocitem;
+ jmethodID m_ocitem_constructor;
+ jmethodID m_addvalue;
+ jmethodID m_addchild;
+ jobject o_key;
+ jobject o_ocitem;
+ int i;
-#define BAIL_OUT(status) \
- free (values); \
- if (o_number_array != NULL) \
- (*jvm_env)->DeleteLocalRef (jvm_env, o_number_array); \
- if (o_list != NULL) \
- (*jvm_env)->DeleteLocalRef (jvm_env, o_list); \
- return (status);
+ c_ocitem = (*jvm_env)->FindClass (jvm_env, "org.collectd.api.OConfigItem");
+ if (c_ocitem == NULL)
+ {
+ ERROR ("java plugin: ctoj_oconfig_item: "
+ "FindClass (org.collectd.api.OConfigItem) failed.");
+ return (NULL);
+ }
- /* Call: List<Number> ValueList.getValues () */
- m_getvalues = (*jvm_env)->GetMethodID (jvm_env, class_ptr,
- "getValues", "()Ljava/util/List;");
- if (m_getvalues == NULL)
+ /* Get the required methods: m_ocitem_constructor, m_addvalue, and m_addchild
+ * {{{ */
+ m_ocitem_constructor = (*jvm_env)->GetMethodID (jvm_env, c_ocitem,
+ "<init>", "(Ljava/lang/String;)V");
+ if (m_ocitem_constructor == NULL)
{
- ERROR ("java plugin: jtoc_values_array: "
- "Cannot find method `List getValues ()'.");
- BAIL_OUT (-1);
+ ERROR ("java plugin: ctoj_oconfig_item: Cannot find the "
+ "`OConfigItem (String)' constructor.");
+ return (NULL);
}
- o_list = (*jvm_env)->CallObjectMethod (jvm_env, object_ptr, m_getvalues);
- if (o_list == NULL)
+ m_addvalue = (*jvm_env)->GetMethodID (jvm_env, c_ocitem,
+ "addValue", "(Lorg/collectd/api/OConfigValue;)V");
+ if (m_addvalue == NULL)
{
- ERROR ("java plugin: jtoc_values_array: "
- "CallObjectMethod (getValues) failed.");
- BAIL_OUT (-1);
+ ERROR ("java plugin: ctoj_oconfig_item: Cannot find the "
+ "`addValue (OConfigValue)' method.");
+ return (NULL);
}
- /* Call: Number[] List.toArray () */
- m_toarray = (*jvm_env)->GetMethodID (jvm_env,
- (*jvm_env)->GetObjectClass (jvm_env, o_list),
- "toArray", "()[Ljava/lang/Object;");
- if (m_toarray == NULL)
+ m_addchild = (*jvm_env)->GetMethodID (jvm_env, c_ocitem,
+ "addChild", "(Lorg/collectd/api/OConfigItem;)V");
+ if (m_addchild == NULL)
{
- ERROR ("java plugin: jtoc_values_array: "
- "Cannot find method `Object[] toArray ()'.");
- BAIL_OUT (-1);
+ ERROR ("java plugin: ctoj_oconfig_item: Cannot find the "
+ "`addChild (OConfigItem)' method.");
+ return (NULL);
}
+ /* }}} */
- o_number_array = (*jvm_env)->CallObjectMethod (jvm_env, o_list, m_toarray);
- if (o_number_array == NULL)
+ /* Create a String object with the key.
+ * Needed for calling the constructor. */
+ o_key = (*jvm_env)->NewStringUTF (jvm_env, ci->key);
+ if (o_key == NULL)
{
- ERROR ("java plugin: jtoc_values_array: "
- "CallObjectMethod (toArray) failed.");
- BAIL_OUT (-1);
+ ERROR ("java plugin: ctoj_oconfig_item: "
+ "Creating String object failed.");
+ return (NULL);
}
- values = calloc (values_num, sizeof (value_t));
- if (values == NULL)
+ /* Create an OConfigItem object */
+ o_ocitem = (*jvm_env)->NewObject (jvm_env,
+ c_ocitem, m_ocitem_constructor, o_key);
+ if (o_ocitem == NULL)
{
- ERROR ("java plugin: jtoc_values_array: calloc failed.");
- BAIL_OUT (-1);
+ ERROR ("java plugin: ctoj_oconfig_item: "
+ "Creating an OConfigItem object failed.");
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_key);
+ return (NULL);
}
- for (i = 0; i < values_num; i++)
+ /* We don't need the String object any longer.. */
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_key);
+
+ /* Call OConfigItem.addValue for each value */
+ for (i = 0; i < ci->values_num; i++) /* {{{ */
{
- jobject o_number;
- int status;
+ jobject o_value;
- o_number = (*jvm_env)->GetObjectArrayElement (jvm_env,
- o_number_array, (jsize) i);
- if (o_number == NULL)
+ o_value = ctoj_oconfig_value (jvm_env, ci->values[i]);
+ if (o_value == NULL)
{
- ERROR ("java plugin: jtoc_values_array: "
- "GetObjectArrayElement (%i) failed.", i);
- BAIL_OUT (-1);
+ ERROR ("java plugin: ctoj_oconfig_item: "
+ "Creating an OConfigValue object failed.");
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_ocitem);
+ return (NULL);
}
- status = jtoc_value (jvm_env, values + i, ds->ds[i].type, o_number);
- if (status != 0)
+ (*jvm_env)->CallVoidMethod (jvm_env, o_ocitem, m_addvalue, o_value);
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_value);
+ } /* }}} for (i = 0; i < ci->values_num; i++) */
+
+ /* Call OConfigItem.addChild for each child */
+ for (i = 0; i < ci->children_num; i++) /* {{{ */
+ {
+ jobject o_child;
+
+ o_child = ctoj_oconfig_item (jvm_env, ci->children + i);
+ if (o_child == NULL)
{
- ERROR ("java plugin: jtoc_values_array: "
- "jtoc_value (%i) failed.", i);
- BAIL_OUT (-1);
+ ERROR ("java plugin: ctoj_oconfig_item: "
+ "Creating an OConfigItem object failed.");
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_ocitem);
+ return (NULL);
}
- } /* for (i = 0; i < values_num; i++) */
- vl->values = values;
- vl->values_len = values_num;
+ (*jvm_env)->CallVoidMethod (jvm_env, o_ocitem, m_addvalue, o_child);
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_child);
+ } /* }}} for (i = 0; i < ci->children_num; i++) */
+
+ return (o_ocitem);
+} /* }}} jobject ctoj_oconfig_item */
+
+/* Convert a data_set_t to a org.collectd.api.DataSet */
+static jobject ctoj_data_set (JNIEnv *jvm_env, const data_set_t *ds) /* {{{ */
+{
+ jclass c_dataset;
+ jmethodID m_constructor;
+ jmethodID m_add;
+ jobject o_type;
+ jobject o_dataset;
+ int i;
+
+ /* Look up the org.collectd.api.DataSet class */
+ c_dataset = (*jvm_env)->FindClass (jvm_env, "org.collectd.api.DataSet");
+ if (c_dataset == NULL)
+ {
+ ERROR ("java plugin: ctoj_data_set: Looking up the "
+ "org.collectd.api.DataSet class failed.");
+ return (NULL);
+ }
+
+ /* Search for the `DataSet (String type)' constructor. */
+ m_constructor = (*jvm_env)->GetMethodID (jvm_env,
+ c_dataset, "<init>", "(Ljava.lang.String;)V");
+ if (m_constructor == NULL)
+ {
+ ERROR ("java plugin: ctoj_data_set: Looking up the "
+ "`DataSet (String)' constructor failed.");
+ return (NULL);
+ }
+
+ /* Search for the `void addDataSource (DataSource)' method. */
+ m_add = (*jvm_env)->GetMethodID (jvm_env,
+ c_dataset, "addDataSource", "(Lorg.collectd.api.DataSource;)V");
+ if (m_add == NULL)
+ {
+ ERROR ("java plugin: ctoj_data_set: Looking up the "
+ "`addDataSource (DataSource)' method failed.");
+ return (NULL);
+ }
+
+ o_type = (*jvm_env)->NewStringUTF (jvm_env, ds->type);
+ if (o_type == NULL)
+ {
+ ERROR ("java plugin: ctoj_data_set: Creating a String object failed.");
+ return (NULL);
+ }
+
+ o_dataset = (*jvm_env)->NewObject (jvm_env,
+ c_dataset, m_constructor, o_type);
+ if (o_dataset == NULL)
+ {
+ ERROR ("java plugin: ctoj_data_set: Creating a DataSet object failed.");
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_type);
+ return (NULL);
+ }
+
+ /* Decrease reference counter on the java.lang.String object. */
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_type);
+
+ for (i = 0; i < ds->ds_num; i++)
+ {
+ jobject o_datasource;
+
+ o_datasource = ctoj_data_source (jvm_env, ds->ds + i);
+ if (o_datasource == NULL)
+ {
+ ERROR ("java plugin: ctoj_data_set: ctoj_data_source (%s.%s) failed",
+ ds->type, ds->ds[i].name);
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_dataset);
+ return (NULL);
+ }
+
+ (*jvm_env)->CallVoidMethod (jvm_env, o_dataset, m_add, o_datasource);
+
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_datasource);
+ } /* for (i = 0; i < ds->ds_num; i++) */
+
+ return (o_dataset);
+} /* }}} jobject ctoj_data_set */
+
+static int ctoj_value_list_add_value (JNIEnv *jvm_env, /* {{{ */
+ value_t value, int ds_type,
+ jclass class_ptr, jobject object_ptr)
+{
+ jmethodID m_addvalue;
+ jobject o_number;
+
+ m_addvalue = (*jvm_env)->GetMethodID (jvm_env, class_ptr,
+ "addValue", "(Ljava/lang/Number;)V");
+ if (m_addvalue == NULL)
+ {
+ ERROR ("java plugin: ctoj_value_list_add_value: "
+ "Cannot find method `void addValue (Number)'.");
+ return (-1);
+ }
+
+ o_number = ctoj_value_to_number (jvm_env, value, ds_type);
+ if (o_number == NULL)
+ {
+ ERROR ("java plugin: ctoj_value_list_add_value: "
+ "ctoj_value_to_number failed.");
+ return (-1);
+ }
+
+ (*jvm_env)->CallVoidMethod (jvm_env, object_ptr, m_addvalue, o_number);
+
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_number);
+
+ return (0);
+} /* }}} int ctoj_value_list_add_value */
+
+static int ctoj_value_list_add_data_set (JNIEnv *jvm_env, /* {{{ */
+ jclass c_valuelist, jobject o_valuelist, const data_set_t *ds)
+{
+ jmethodID m_setdataset;
+ jobject o_dataset;
+
+ /* Look for the `void setDataSource (List<DataSource> ds)' method. */
+ m_setdataset = (*jvm_env)->GetMethodID (jvm_env, c_valuelist,
+ "setDataSet", "(Lorg.collectd.api.DataSet;)V");
+ if (m_setdataset == NULL)
+ {
+ ERROR ("java plugin: ctoj_value_list_add_data_set: "
+ "Cannot find the `void setDataSet (DataSet)' method.");
+ return (-1);
+ }
+
+ /* Create a DataSet object. */
+ o_dataset = ctoj_data_set (jvm_env, ds);
+ if (o_dataset == NULL)
+ {
+ ERROR ("java plugin: ctoj_value_list_add_data_set: "
+ "ctoj_data_set (%s) failed.", ds->type);
+ return (-1);
+ }
+
+ /* Actually call the method. */
+ (*jvm_env)->CallVoidMethod (jvm_env,
+ o_valuelist, m_setdataset, o_dataset);
+
+ /* Decrease reference counter on the List<DataSource> object. */
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_dataset);
+
+ return (0);
+} /* }}} int ctoj_value_list_add_data_set */
+
+static jobject ctoj_value_list (JNIEnv *jvm_env, /* {{{ */
+ const data_set_t *ds, const value_list_t *vl)
+{
+ jclass c_valuelist;
+ jmethodID m_valuelist_constructor;
+ jobject o_valuelist;
+ int status;
+ int i;
+
+ /* First, create a new ValueList instance..
+ * Look up the class.. */
+ c_valuelist = (*jvm_env)->FindClass (jvm_env,
+ "org.collectd.api.ValueList");
+ if (c_valuelist == NULL)
+ {
+ ERROR ("java plugin: ctoj_value_list: "
+ "FindClass (org.collectd.api.ValueList) failed.");
+ return (NULL);
+ }
+
+ /* Lookup the `ValueList ()' constructor. */
+ m_valuelist_constructor = (*jvm_env)->GetMethodID (jvm_env, c_valuelist,
+ "<init>", "()V");
+ if (m_valuelist_constructor == NULL)
+ {
+ ERROR ("java plugin: ctoj_value_list: Cannot find the "
+ "`ValueList ()' constructor.");
+ return (NULL);
+ }
+
+ /* Create a new instance. */
+ o_valuelist = (*jvm_env)->NewObject (jvm_env, c_valuelist,
+ m_valuelist_constructor);
+ if (o_valuelist == NULL)
+ {
+ ERROR ("java plugin: ctoj_value_list: Creating a new ValueList instance "
+ "failed.");
+ return (NULL);
+ }
+
+ status = ctoj_value_list_add_data_set (jvm_env,
+ c_valuelist, o_valuelist, ds);
+ if (status != 0)
+ {
+ ERROR ("java plugin: ctoj_value_list: "
+ "ctoj_value_list_add_data_set failed.");
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_valuelist);
+ return (NULL);
+ }
+
+ /* Set the strings.. */
+#define SET_STRING(str,method_name) do { \
+ 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.", \
+ method_name); \
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_valuelist); \
+ return (NULL); \
+ } } while (0)
+
+ SET_STRING (vl->host, "setHost");
+ SET_STRING (vl->plugin, "setPlugin");
+ SET_STRING (vl->plugin_instance, "setPluginInstance");
+ SET_STRING (vl->type, "setType");
+ SET_STRING (vl->type_instance, "setTypeInstance");
+
+#undef SET_STRING
+
+ /* Set the `time' member. Java stores time in milliseconds. */
+ status = ctoj_long (jvm_env, ((jlong) vl->time) * ((jlong) 1000),
+ c_valuelist, o_valuelist, "setTime");
+ if (status != 0)
+ {
+ ERROR ("java plugin: ctoj_value_list: ctoj_long (setTime) failed.");
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_valuelist);
+ return (NULL);
+ }
+
+ /* Set the `interval' member.. */
+ status = ctoj_long (jvm_env, (jlong) vl->interval,
+ c_valuelist, o_valuelist, "setInterval");
+ if (status != 0)
+ {
+ ERROR ("java plugin: ctoj_value_list: ctoj_long (setInterval) failed.");
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_valuelist);
+ return (NULL);
+ }
+
+ for (i = 0; i < vl->values_len; i++)
+ {
+ status = ctoj_value_list_add_value (jvm_env, vl->values[i], ds->ds[i].type,
+ c_valuelist, o_valuelist);
+ if (status != 0)
+ {
+ ERROR ("java plugin: ctoj_value_list: "
+ "ctoj_value_list_add_value failed.");
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_valuelist);
+ return (NULL);
+ }
+ }
+
+ return (o_valuelist);
+} /* }}} int ctoj_value_list */
+
+/*
+ * Java to C conversion functions
+ */
+static int jtoc_string (JNIEnv *jvm_env, /* {{{ */
+ char *buffer, size_t buffer_size,
+ jclass class_ptr, jobject object_ptr, const char *method_name)
+{
+ jmethodID method_id;
+ jobject string_obj;
+ const char *c_str;
+
+ method_id = (*jvm_env)->GetMethodID (jvm_env, class_ptr,
+ method_name, "()Ljava/lang/String;");
+ if (method_id == NULL)
+ {
+ ERROR ("java plugin: jtoc_string: Cannot find method `String %s ()'.",
+ method_name);
+ return (-1);
+ }
+
+ string_obj = (*jvm_env)->CallObjectMethod (jvm_env, object_ptr, method_id);
+ if (string_obj == NULL)
+ {
+ ERROR ("java plugin: jtoc_string: CallObjectMethod (%s) failed.",
+ method_name);
+ return (-1);
+ }
+
+ c_str = (*jvm_env)->GetStringUTFChars (jvm_env, string_obj, 0);
+ if (c_str == NULL)
+ {
+ ERROR ("java plugin: jtoc_string: GetStringUTFChars failed.");
+ (*jvm_env)->DeleteLocalRef (jvm_env, string_obj);
+ return (-1);
+ }
+
+ sstrncpy (buffer, c_str, buffer_size);
+
+ (*jvm_env)->ReleaseStringUTFChars (jvm_env, string_obj, c_str);
+ (*jvm_env)->DeleteLocalRef (jvm_env, string_obj);
+
+ return (0);
+} /* }}} int jtoc_string */
+
+static int jtoc_long (JNIEnv *jvm_env, /* {{{ */
+ jlong *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, "()J");
+ if (method_id == NULL)
+ {
+ ERROR ("java plugin: jtoc_long: Cannot find method `long %s ()'.",
+ method_name);
+ return (-1);
+ }
+
+ *ret_value = (*jvm_env)->CallLongMethod (jvm_env, object_ptr, method_id);
+
+ return (0);
+} /* }}} int jtoc_long */
+
+static int jtoc_double (JNIEnv *jvm_env, /* {{{ */
+ jdouble *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, "()D");
+ if (method_id == NULL)
+ {
+ ERROR ("java plugin: jtoc_string: Cannot find method `double %s ()'.",
+ method_name);
+ return (-1);
+ }
+
+ *ret_value = (*jvm_env)->CallDoubleMethod (jvm_env, object_ptr, method_id);
+
+ return (0);
+} /* }}} int jtoc_double */
+
+static int jtoc_value (JNIEnv *jvm_env, /* {{{ */
+ value_t *ret_value, int ds_type, jobject object_ptr)
+{
+ jclass class_ptr;
+ int status;
+
+ class_ptr = (*jvm_env)->GetObjectClass (jvm_env, object_ptr);
+
+ if (ds_type == DS_TYPE_COUNTER)
+ {
+ jlong tmp_long;
+
+ status = jtoc_long (jvm_env, &tmp_long,
+ class_ptr, object_ptr, "longValue");
+ if (status != 0)
+ {
+ ERROR ("java plugin: jtoc_value: "
+ "jtoc_long failed.");
+ return (-1);
+ }
+ (*ret_value).counter = (counter_t) tmp_long;
+ }
+ else
+ {
+ jdouble tmp_double;
+
+ status = jtoc_double (jvm_env, &tmp_double,
+ class_ptr, object_ptr, "doubleValue");
+ if (status != 0)
+ {
+ ERROR ("java plugin: jtoc_value: "
+ "jtoc_double failed.");
+ return (-1);
+ }
+ (*ret_value).gauge = (gauge_t) tmp_double;
+ }
+
+ return (0);
+} /* }}} int jtoc_value */
+
+static int jtoc_values_array (JNIEnv *jvm_env, /* {{{ */
+ const data_set_t *ds, value_list_t *vl,
+ jclass class_ptr, jobject object_ptr)
+{
+ jmethodID m_getvalues;
+ jmethodID m_toarray;
+ jobject o_list;
+ jobjectArray o_number_array;
+
+ value_t *values;
+ int values_num;
+ int i;
+
+ values_num = ds->ds_num;
+
+ values = NULL;
+ o_number_array = NULL;
+ o_list = NULL;
+
+#define BAIL_OUT(status) \
+ free (values); \
+ if (o_number_array != NULL) \
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_number_array); \
+ if (o_list != NULL) \
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_list); \
+ return (status);
+
+ /* Call: List<Number> ValueList.getValues () */
+ m_getvalues = (*jvm_env)->GetMethodID (jvm_env, class_ptr,
+ "getValues", "()Ljava/util/List;");
+ if (m_getvalues == NULL)
+ {
+ ERROR ("java plugin: jtoc_values_array: "
+ "Cannot find method `List getValues ()'.");
+ BAIL_OUT (-1);
+ }
+
+ o_list = (*jvm_env)->CallObjectMethod (jvm_env, object_ptr, m_getvalues);
+ if (o_list == NULL)
+ {
+ ERROR ("java plugin: jtoc_values_array: "
+ "CallObjectMethod (getValues) failed.");
+ BAIL_OUT (-1);
+ }
+
+ /* Call: Number[] List.toArray () */
+ m_toarray = (*jvm_env)->GetMethodID (jvm_env,
+ (*jvm_env)->GetObjectClass (jvm_env, o_list),
+ "toArray", "()[Ljava/lang/Object;");
+ if (m_toarray == NULL)
+ {
+ ERROR ("java plugin: jtoc_values_array: "
+ "Cannot find method `Object[] toArray ()'.");
+ BAIL_OUT (-1);
+ }
+
+ o_number_array = (*jvm_env)->CallObjectMethod (jvm_env, o_list, m_toarray);
+ if (o_number_array == NULL)
+ {
+ ERROR ("java plugin: jtoc_values_array: "
+ "CallObjectMethod (toArray) failed.");
+ BAIL_OUT (-1);
+ }
+
+ values = calloc (values_num, sizeof (value_t));
+ if (values == NULL)
+ {
+ ERROR ("java plugin: jtoc_values_array: calloc failed.");
+ BAIL_OUT (-1);
+ }
+
+ for (i = 0; i < values_num; i++)
+ {
+ jobject o_number;
+ int status;
+
+ o_number = (*jvm_env)->GetObjectArrayElement (jvm_env,
+ o_number_array, (jsize) i);
+ if (o_number == NULL)
+ {
+ ERROR ("java plugin: jtoc_values_array: "
+ "GetObjectArrayElement (%i) failed.", i);
+ BAIL_OUT (-1);
+ }
+
+ status = jtoc_value (jvm_env, values + i, ds->ds[i].type, o_number);
+ if (status != 0)
+ {
+ ERROR ("java plugin: jtoc_values_array: "
+ "jtoc_value (%i) failed.", i);
+ BAIL_OUT (-1);
+ }
+ } /* for (i = 0; i < values_num; i++) */
+
+ vl->values = values;
+ vl->values_len = values_num;
+
+#undef BAIL_OUT
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_number_array);
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_list);
+ return (0);
+} /* }}} int jtoc_values_array */
+
+/* Convert a org.collectd.api.ValueList to a value_list_t. */
+static int jtoc_value_list (JNIEnv *jvm_env, value_list_t *vl, /* {{{ */
+ jobject object_ptr)
+{
+ jclass class_ptr;
+ int status;
+ jlong tmp_long;
+ const data_set_t *ds;
+
+ class_ptr = (*jvm_env)->GetObjectClass (jvm_env, object_ptr);
+ if (class_ptr == NULL)
+ {
+ ERROR ("java plugin: jtoc_value_list: GetObjectClass failed.");
+ return (-1);
+ }
+
+#define SET_STRING(buffer,method) do { \
+ status = jtoc_string (jvm_env, buffer, sizeof (buffer), \
+ class_ptr, object_ptr, method); \
+ if (status != 0) { \
+ ERROR ("java plugin: jtoc_value_list: jtoc_string (%s) failed.", \
+ method); \
+ return (-1); \
+ } } while (0)
+
+ SET_STRING(vl->type, "getType");
+
+ ds = plugin_get_ds (vl->type);
+ if (ds == NULL)
+ {
+ ERROR ("java plugin: jtoc_value_list: Data-set `%s' is not defined. "
+ "Please consult the types.db(5) manpage for mor information.",
+ vl->type);
+ return (-1);
+ }
+
+ SET_STRING(vl->host, "getHost");
+ SET_STRING(vl->plugin, "getPlugin");
+ SET_STRING(vl->plugin_instance, "getPluginInstance");
+ SET_STRING(vl->type_instance, "getTypeInstance");
+
+#undef SET_STRING
+
+ status = jtoc_long (jvm_env, &tmp_long, class_ptr, object_ptr, "getTime");
+ if (status != 0)
+ {
+ ERROR ("java plugin: jtoc_value_list: jtoc_long (getTime) failed.");
+ return (-1);
+ }
+ /* Java measures time in milliseconds. */
+ vl->time = (time_t) (tmp_long / ((jlong) 1000));
+
+ status = jtoc_long (jvm_env, &tmp_long,
+ class_ptr, object_ptr, "getInterval");
+ if (status != 0)
+ {
+ ERROR ("java plugin: jtoc_value_list: jtoc_long (getInterval) failed.");
+ return (-1);
+ }
+ vl->interval = (int) tmp_long;
+
+ status = jtoc_values_array (jvm_env, ds, vl, class_ptr, object_ptr);
+ if (status != 0)
+ {
+ ERROR ("java plugin: jtoc_value_list: jtoc_values_array failed.");
+ return (-1);
+ }
+
+ return (0);
+} /* }}} int jtoc_value_list */
+
+static cjni_callback_info_t *cjni_callback_info_create (JNIEnv *jvm_env, /* {{{ */
+ jobject obj, const char *method_name, const char *signature)
+{
+ cjni_callback_info_t *cbi;
+
+ cbi = (cjni_callback_info_t *) malloc (sizeof (*cbi));
+ if (cbi == NULL)
+ {
+ ERROR ("java plugin: cjni_callback_info_create: malloc failed.");
+ return (NULL);
+ }
+ memset (cbi, 0, sizeof (*cbi));
+
+ cbi->class = (*jvm_env)->GetObjectClass (jvm_env, obj);
+ if (cbi->class == NULL)
+ {
+ ERROR ("java plugin: cjni_callback_info_create: GetObjectClass failed.");
+ free (cbi);
+ return (NULL);
+ }
+
+ cbi->object = obj;
+
+ cbi->method = (*jvm_env)->GetMethodID (jvm_env, cbi->class,
+ method_name, signature);
+ if (cbi->method == NULL)
+ {
+ ERROR ("java plugin: cjni_callback_info_create: "
+ "Cannot find the `%s' method with signature `%s'.",
+ method_name, signature);
+ free (cbi);
+ return (NULL);
+ }
+
+ (*jvm_env)->NewGlobalRef (jvm_env, obj);
+
+ return (cbi);
+} /* }}} cjni_callback_info_t cjni_callback_info_create */
+
+/*
+ * Functions accessible from Java
+ */
+static jint JNICALL cjni_api_dispatch_values (JNIEnv *jvm_env, /* {{{ */
+ jobject this, jobject java_vl)
+{
+ value_list_t vl = VALUE_LIST_INIT;
+ int status;
+
+ DEBUG ("cjni_api_dispatch_values: java_vl = %p;", (void *) java_vl);
+
+ status = jtoc_value_list (jvm_env, &vl, java_vl);
+ if (status != 0)
+ {
+ ERROR ("java plugin: cjni_api_dispatch_values: jtoc_value_list failed.");
+ return (-1);
+ }
+
+ status = plugin_dispatch_values (&vl);
+
+ sfree (vl.values);
+
+ return (status);
+} /* }}} jint cjni_api_dispatch_values */
+
+static jobject JNICALL cjni_api_get_ds (JNIEnv *jvm_env, /* {{{ */
+ jobject this, jobject o_string_type)
+{
+ const char *ds_name;
+ const data_set_t *ds;
+ jobject o_dataset;
+
+ ds_name = (*jvm_env)->GetStringUTFChars (jvm_env, o_string_type, 0);
+ if (ds_name == NULL)
+ {
+ ERROR ("java plugin: cjni_api_get_ds: GetStringUTFChars failed.");
+ return (NULL);
+ }
+
+ ds = plugin_get_ds (ds_name);
+ DEBUG ("java plugin: cjni_api_get_ds: "
+ "plugin_get_ds (%s) = %p;", ds_name, (void *) ds);
+
+ (*jvm_env)->ReleaseStringUTFChars (jvm_env, o_string_type, ds_name);
+
+ if (ds == NULL)
+ return (NULL);
+
+ o_dataset = ctoj_data_set (jvm_env, ds);
+ return (o_dataset);
+} /* }}} jint cjni_api_get_ds */
+
+static jint JNICALL cjni_api_register_read (JNIEnv *jvm_env, /* {{{ */
+ jobject this, jobject o_name, jobject o_read)
+{
+ const char *c_name;
+ user_data_t ud;
+ cjni_callback_info_t *cbi;
+
+ c_name = (*jvm_env)->GetStringUTFChars (jvm_env, o_name, 0);
+ if (c_name == NULL)
+ {
+ ERROR ("java plugin: cjni_api_register_read: GetStringUTFChars failed.");
+ return (-1);
+ }
+
+ cbi = cjni_callback_info_create (jvm_env, o_read, "Read", "()I");
+ if (cbi == NULL)
+ return (-1);
+
+ memset (&ud, 0, sizeof (ud));
+ ud.data = (void *) cbi;
+ ud.free_func = cjni_callback_info_destroy;
+
+ plugin_register_complex_read (c_name, cjni_read, &ud);
+
+ (*jvm_env)->ReleaseStringUTFChars (jvm_env, o_name, c_name);
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_read);
+
+ return (0);
+} /* }}} jint cjni_api_register_read */
+
+static JNINativeMethod jni_api_functions[] =
+{
+ { "DispatchValues",
+ "(Lorg/collectd/api/ValueList;)I",
+ cjni_api_dispatch_values },
+
+ { "GetDS",
+ "(Ljava/lang/String;)Lorg/collectd/api/DataSet;",
+ cjni_api_get_ds },
+
+ { "RegisterRead",
+ "(Ljava/lang/String;Lorg/collectd/api/CollectdReadInterface;)I",
+ cjni_api_register_read }
+};
+static size_t jni_api_functions_num = sizeof (jni_api_functions)
+ / sizeof (jni_api_functions[0]);
+
+/*
+ * Functions
+ */
+static JNIEnv *cjni_thread_attach (void) /* {{{ */
+{
+ cjni_jvm_env_t *cjni_env;
+ JNIEnv *jvm_env;
+
+ cjni_env = pthread_getspecific (jvm_env_key);
+ if (cjni_env == NULL)
+ {
+ /* This pointer is free'd in `cjni_jvm_env_destroy'. */
+ cjni_env = (cjni_jvm_env_t *) malloc (sizeof (*cjni_env));
+ if (cjni_env == NULL)
+ {
+ ERROR ("java plugin: cjni_thread_attach: malloc failed.");
+ return (NULL);
+ }
+ memset (cjni_env, 0, sizeof (*cjni_env));
+ cjni_env->reference_counter = 0;
+ cjni_env->jvm_env = NULL;
+
+ pthread_setspecific (jvm_env_key, cjni_env);
+ }
+
+ if (cjni_env->reference_counter > 0)
+ {
+ cjni_env->reference_counter++;
+ jvm_env = cjni_env->jvm_env;
+ }
+ else
+ {
+ int status;
+ JavaVMAttachArgs args;
+
+ assert (cjni_env->jvm_env == NULL);
+
+ memset (&args, 0, sizeof (args));
+ args.version = JNI_VERSION_1_2;
+
+ status = (*jvm)->AttachCurrentThread (jvm, (void *) &jvm_env, (void *) &args);
+ if (status != 0)
+ {
+ ERROR ("java plugin: cjni_thread_attach: AttachCurrentThread failed "
+ "with status %i.", status);
+ return (NULL);
+ }
+
+ cjni_env->reference_counter = 1;
+ cjni_env->jvm_env = jvm_env;
+ }
+
+ DEBUG ("java plugin: cjni_thread_attach: cjni_env->reference_counter = %i",
+ cjni_env->reference_counter);
+ assert (jvm_env != NULL);
+ return (jvm_env);
+} /* }}} JNIEnv *cjni_thread_attach */
+
+static int cjni_thread_detach (void) /* {{{ */
+{
+ cjni_jvm_env_t *cjni_env;
+ int status;
+
+ cjni_env = pthread_getspecific (jvm_env_key);
+ if (cjni_env == NULL)
+ {
+ ERROR ("java plugin: cjni_thread_detach: pthread_getspecific failed.");
+ return (-1);
+ }
+
+ assert (cjni_env->reference_counter > 0);
+ assert (cjni_env->jvm_env != NULL);
+
+ cjni_env->reference_counter--;
+ DEBUG ("java plugin: cjni_thread_detach: cjni_env->reference_counter = %i",
+ cjni_env->reference_counter);
+
+ if (cjni_env->reference_counter > 0)
+ return (0);
+
+ status = (*jvm)->DetachCurrentThread (jvm);
+ if (status != 0)
+ {
+ ERROR ("java plugin: cjni_thread_detach: DetachCurrentThread failed "
+ "with status %i.", status);
+ }
+
+ cjni_env->reference_counter = 0;
+ cjni_env->jvm_env = NULL;
+
+ return (0);
+} /* }}} JNIEnv *cjni_thread_attach */
+
+static void cjni_jvm_env_destroy (void *args) /* {{{ */
+{
+ cjni_jvm_env_t *cjni_env;
+
+ if (args == NULL)
+ return;
+
+ cjni_env = (cjni_jvm_env_t *) args;
+
+ if (cjni_env->reference_counter > 0)
+ {
+ ERROR ("java plugin: cjni_jvm_env_destroy: "
+ "cjni_env->reference_counter = %i;", cjni_env->reference_counter);
+ }
+
+ if (cjni_env->jvm_env != NULL)
+ {
+ ERROR ("java plugin: cjni_jvm_env_destroy: cjni_env->jvm_env = %p;",
+ (void *) cjni_env->jvm_env);
+ }
+
+ /* The pointer is allocated in `cjni_thread_attach' */
+ free (cjni_env);
+} /* }}} void cjni_jvm_env_destroy */
+
+/*
+ * Delete a global reference, set by the various `Register*' functions.
+ */
+static void cjni_callback_info_destroy (void *arg) /* {{{ */
+{
+ JNIEnv *jni_env;
+ cjni_callback_info_t *cbi;
+
+ DEBUG ("java plugin: cjni_callback_info_destroy (arg = %p);", arg);
+
+ if (arg == NULL)
+ return;
+
+ jni_env = cjni_thread_attach ();
+ if (jni_env == NULL)
+ {
+ ERROR ("java plugin: cjni_callback_info_destroy: cjni_thread_attach failed.");
+ return;
+ }
+
+ cbi = (cjni_callback_info_t *) arg;
+
+ (*jni_env)->DeleteGlobalRef (jni_env, cbi->object);
+
+ cbi->method = NULL;
+ cbi->object = NULL;
+ cbi->class = NULL;
+ free (cbi);
+
+ cjni_thread_detach ();
+} /* }}} void cjni_callback_info_destroy */
+
+static int cjni_config_add_jvm_arg (oconfig_item_t *ci) /* {{{ */
+{
+ char **tmp;
+
+ if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
+ {
+ WARNING ("java plugin: `JVMArg' needs exactly one string argument.");
+ return (-1);
+ }
+
+ tmp = (char **) realloc (jvm_argv, sizeof (char *) * (jvm_argc + 1));
+ if (tmp == NULL)
+ {
+ ERROR ("java plugin: realloc failed.");
+ return (-1);
+ }
+ jvm_argv = tmp;
+
+ jvm_argv[jvm_argc] = strdup (ci->values[0].value.string);
+ if (jvm_argv[jvm_argc] == NULL)
+ {
+ ERROR ("java plugin: strdup failed.");
+ return (-1);
+ }
+ jvm_argc++;
+
+ return (0);
+} /* }}} int cjni_config_add_jvm_arg */
+
+static int cjni_config_load_plugin (oconfig_item_t *ci) /* {{{ */
+{
+ java_plugin_t *jp;
+
+ if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
+ {
+ WARNING ("java plugin: `LoadPlugin' needs exactly one string argument.");
+ return (-1);
+ }
+
+ jp = (java_plugin_t *) realloc (java_plugins,
+ sizeof (*java_plugins) * (java_plugins_num + 1));
+ if (jp == NULL)
+ {
+ ERROR ("java plugin: realloc failed.");
+ return (-1);
+ }
+ java_plugins = jp;
+ jp = java_plugins + java_plugins_num;
+
+ memset (jp, 0, sizeof (*jp));
+ jp->class_name = strdup (ci->values[0].value.string);
+ if (jp->class_name == NULL)
+ {
+ ERROR ("java plugin: strdup failed.");
+ return (-1);
+ }
+
+ jp->class_ptr = NULL;
+ jp->object_ptr = NULL;
+ jp->ci = NULL;
+ jp->flags = 0;
+ jp->m_config = NULL;
+ jp->m_init = NULL;
+ jp->m_write = NULL;
+ jp->m_shutdown = NULL;
+
+ java_plugins_num++;
+
+ return (0);
+} /* }}} int cjni_config_load_plugin */
+
+static int cjni_config_plugin_block (oconfig_item_t *ci) /* {{{ */
+{
+ size_t i;
+ const char *class_name;
+
+ if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
+ {
+ WARNING ("java plugin: `Plugin' blocks "
+ "need exactly one string argument.");
+ return (-1);
+ }
+
+ class_name = ci->values[0].value.string;
+ for (i = 0; i < java_plugins_num; i++)
+ if (strcmp (java_plugins[i].class_name, class_name) == 0)
+ break;
+
+ if (i >= java_plugins_num)
+ {
+ WARNING ("java plugin: Configuration block for the `%s' plugin found, "
+ "but the plugin has not been loaded. Please note, that the class "
+ "name is case-sensitive!",
+ class_name);
+ return (0);
+ }
+
+ if (java_plugins[i].ci != NULL)
+ {
+ WARNING ("java plugin: There are more than one <Plugin> blocks for the "
+ "`%s' plugin. This is currently not supported - only the first block "
+ "will be used!",
+ class_name);
+ return (0);
+ }
+
+ java_plugins[i].ci = oconfig_clone (ci);
+ if (java_plugins[i].ci == NULL)
+ {
+ ERROR ("java plugin: cjni_config_plugin_block: "
+ "oconfig_clone failed for `%s'.",
+ class_name);
+ return (-1);
+ }
+
+ DEBUG ("java plugin: cjni_config_plugin_block: "
+ "Successfully copied config for `%s'.",
+ class_name);
+
+ return (0);
+} /* }}} int cjni_config_plugin_block */
+
+static int cjni_config (oconfig_item_t *ci) /* {{{ */
+{
+ int success;
+ int errors;
+ int status;
+ int i;
+
+ success = 0;
+ errors = 0;
+
+ for (i = 0; i < ci->children_num; i++)
+ {
+ oconfig_item_t *child = ci->children + i;
+
+ if (strcasecmp ("JVMArg", child->key) == 0)
+ {
+ status = cjni_config_add_jvm_arg (child);
+ if (status == 0)
+ success++;
+ else
+ errors++;
+ }
+ else if (strcasecmp ("LoadPlugin", child->key) == 0)
+ {
+ status = cjni_config_load_plugin (child);
+ if (status == 0)
+ success++;
+ else
+ errors++;
+ }
+ else if (strcasecmp ("Plugin", child->key) == 0)
+ {
+ status = cjni_config_plugin_block (child);
+ if (status == 0)
+ success++;
+ else
+ errors++;
+ }
+ else
+ {
+ WARNING ("java plugin: Option `%s' not allowed here.", child->key);
+ errors++;
+ }
+ }
+
+ if ((success == 0) && (errors > 0))
+ {
+ ERROR ("java plugin: All statements failed.");
+ return (-1);
+ }
+
+ return (0);
+} /* }}} int cjni_config */
+
+static int cjni_write_one_plugin (JNIEnv *jvm_env, /* {{{ */
+ java_plugin_t *jp, jobject vl_java)
+{
+ int status;
+
+ if ((jp == NULL)
+ || ((jp->flags & CJNI_FLAG_ENABLED) == 0)
+ || (jp->m_write == NULL))
+ return (0);
+
+ DEBUG ("java plugin: Calling: %s.Write(ValueList)", jp->class_name);
+
+ status = (*jvm_env)->CallIntMethod (jvm_env, jp->object_ptr,
+ jp->m_write, vl_java);
+ if (status != 0)
+ {
+ ERROR ("java plugin: cjni_write_one_plugin: "
+ "Calling `Write' on an `%s' object failed with status %i.",
+ jp->class_name, status);
+ return (-1);
+ }
+
+ return (0);
+} /* }}} int cjni_write_one_plugin */
+
+static int cjni_write (const data_set_t *ds, const value_list_t *vl, /* {{{ */
+ user_data_t __attribute__((unused)) *user_data)
+{
+ JNIEnv *jvm_env;
+ java_plugin_t *jp;
+ jobject vl_java;
+ int status;
+
+ if (jvm == NULL)
+ {
+ ERROR ("java plugin: cjni_write: jvm == NULL");
+ return (-1);
+ }
+
+ if ((user_data == NULL) || (user_data->data == NULL))
+ {
+ ERROR ("java plugin: cjni_read: Invalid user data.");
+ return (-1);
+ }
+
+ jvm_env = cjni_thread_attach ();
+ if (jvm_env == NULL)
+ return (-1);
+
+ vl_java = ctoj_value_list (jvm_env, ds, vl);
+ if (vl_java == NULL)
+ {
+ ERROR ("java plugin: cjni_write_plugins: ctoj_value_list failed.");
+ return (-1);
+ }
+
+ jp = (java_plugin_t *) user_data->data;
+
+ cjni_write_one_plugin (jvm_env, jp, vl_java);
+
+ (*jvm_env)->DeleteLocalRef (jvm_env, vl_java);
+
+ status = cjni_thread_detach ();
+ if (status != 0)
+ return (-1);
+
+ return (0);
+} /* }}} int cjni_write */
+
+static int cjni_shutdown_one_plugin (JNIEnv *jvm_env, /* {{{ */
+ java_plugin_t *jp)
+{
+ int status;
+
+ if ((jp == NULL)
+ || ((jp->flags & CJNI_FLAG_ENABLED) == 0)
+ || (jp->m_shutdown == NULL))
+ return (0);
+
+ status = (*jvm_env)->CallIntMethod (jvm_env, jp->object_ptr,
+ jp->m_shutdown);
+ if (status != 0)
+ {
+ ERROR ("cjni_shutdown_one_plugin: Destroying an `%s' object failed "
+ "with status %i.", jp->class_name, status);
+ return (-1);
+ }
+ jp->flags &= ~CJNI_FLAG_ENABLED;
+
+ return (0);
+} /* }}} int cjni_shutdown_one_plugin */
+
+static int cjni_shutdown_plugins (JNIEnv *jvm_env) /* {{{ */
+{
+ size_t j;
+
+ for (j = 0; j < java_plugins_num; j++)
+ cjni_shutdown_one_plugin (jvm_env, &java_plugins[j]);
-#undef BAIL_OUT
- (*jvm_env)->DeleteLocalRef (jvm_env, o_number_array);
- (*jvm_env)->DeleteLocalRef (jvm_env, o_list);
return (0);
-} /* }}} int jtoc_values_array */
+} /* }}} int cjni_shutdown_plugins */
-static int jtoc_value_list (JNIEnv *jvm_env, value_list_t *vl, /* {{{ */
- jobject object_ptr)
+static int cjni_shutdown (void) /* {{{ */
{
- jclass class_ptr;
+ JNIEnv *jvm_env;
+ JavaVMAttachArgs args;
int status;
- jlong tmp_long;
- const data_set_t *ds;
-
- class_ptr = (*jvm_env)->GetObjectClass (jvm_env, object_ptr);
- if (class_ptr == NULL)
- {
- ERROR ("java plugin: jtoc_value_list: GetObjectClass failed.");
- return (-1);
- }
+ size_t i;
-#define SET_STRING(buffer,method) do { \
- status = jtoc_string (jvm_env, buffer, sizeof (buffer), \
- class_ptr, object_ptr, method); \
- if (status != 0) { \
- ERROR ("java plugin: jtoc_value_list: jtoc_string (%s) failed.", \
- method); \
- return (-1); \
- } } while (0)
+ if (jvm == NULL)
+ return (0);
- SET_STRING(vl->type, "getType");
+ jvm_env = NULL;
+ memset (&args, 0, sizeof (args));
+ args.version = JNI_VERSION_1_2;
- ds = plugin_get_ds (vl->type);
- if (ds == NULL)
+ status = (*jvm)->AttachCurrentThread (jvm, (void **) &jvm_env, &args);
+ if (status != 0)
{
- ERROR ("java plugin: jtoc_value_list: Data-set `%s' is not defined. "
- "Please consult the types.db(5) manpage for mor information.",
- vl->type);
+ ERROR ("java plugin: cjni_read: AttachCurrentThread failed with status %i.",
+ status);
return (-1);
}
- SET_STRING(vl->host, "getHost");
- SET_STRING(vl->plugin, "getPlugin");
- SET_STRING(vl->plugin_instance, "getPluginInstance");
- SET_STRING(vl->type_instance, "getTypeInstance");
+ cjni_shutdown_plugins (jvm_env);
-#undef SET_STRING
+ (*jvm)->DestroyJavaVM (jvm);
+ jvm = NULL;
+ jvm_env = NULL;
- status = jtoc_long (jvm_env, &tmp_long, class_ptr, object_ptr, "getTime");
- if (status != 0)
- {
- ERROR ("java plugin: jtoc_value_list: jtoc_string (getTime) failed.");
- return (-1);
- }
- vl->time = (time_t) tmp_long;
+ pthread_key_delete (jvm_env_key);
- status = jtoc_long (jvm_env, &tmp_long,
- class_ptr, object_ptr, "getInterval");
- if (status != 0)
+ for (i = 0; i < jvm_argc; i++)
{
- ERROR ("java plugin: jtoc_value_list: jtoc_string (getInterval) failed.");
- return (-1);
+ sfree (jvm_argv[i]);
}
- vl->interval = (int) tmp_long;
+ sfree (jvm_argv);
+ jvm_argc = 0;
- status = jtoc_values_array (jvm_env, ds, vl, class_ptr, object_ptr);
- if (status != 0)
+ for (i = 0; i < java_plugins_num; i++)
{
- ERROR ("java plugin: jtoc_value_list: jtoc_values_array failed.");
- return (-1);
+ sfree (java_plugins[i].class_name);
+ oconfig_free (java_plugins[i].ci);
}
+ sfree (java_plugins);
+ java_plugins_num = 0;
return (0);
-} /* }}} int jtoc_value_list */
+} /* }}} int cjni_shutdown */
-/*
- * Functions accessible from Java
- */
-static jint JNICALL cjni_api_dispatch_values (JNIEnv *jvm_env, /* {{{ */
- jobject this, jobject java_vl)
+static int cjni_read (user_data_t *user_data) /* {{{ */
{
- value_list_t vl = VALUE_LIST_INIT;
+ JNIEnv *jvm_env;
+ cjni_callback_info_t *cbi;
int status;
- DEBUG ("cjni_api_dispatch_values: java_vl = %p;", (void *) java_vl);
+ if (jvm == NULL)
+ {
+ ERROR ("java plugin: cjni_read: jvm == NULL");
+ return (-1);
+ }
- status = jtoc_value_list (jvm_env, &vl, java_vl);
- if (status != 0)
+ if ((user_data == NULL) || (user_data->data == NULL))
{
- ERROR ("java plugin: cjni_api_dispatch_values: jtoc_value_list failed.");
+ ERROR ("java plugin: cjni_read: Invalid user data.");
return (-1);
}
- plugin_dispatch_values (&vl);
+ jvm_env = cjni_thread_attach ();
+ if (jvm_env == NULL)
+ return (-1);
- sfree (vl.values);
+ cbi = (cjni_callback_info_t *) user_data->data;
- return (0);
-} /* }}} jint cjni_api_dispatch_values */
+ status = (*jvm_env)->CallIntMethod (jvm_env, cbi->object,
+ cbi->method);
-static JNINativeMethod jni_api_functions[] =
-{
- { "DispatchValues", "(Lorg/collectd/protocol/ValueList;)I", cjni_api_dispatch_values }
-};
-static size_t jni_api_functions_num = sizeof (jni_api_functions)
- / sizeof (jni_api_functions[0]);
+ status = cjni_thread_detach ();
+ if (status != 0)
+ {
+ ERROR ("java plugin: cjni_read: cjni_thread_detach failed.");
+ return (-1);
+ }
+
+ return (status);
+} /* }}} int cjni_read */
-/*
- * Functions
- */
static int cjni_init_one_plugin (JNIEnv *jvm_env, java_plugin_t *jp) /* {{{ */
{
+ char plugin_name[128];
jmethodID constructor_id;
int status;
return (-1);
}
- jp->method_init = (*jvm_env)->GetMethodID (jvm_env, jp->class_ptr,
+ jp->m_config = (*jvm_env)->GetMethodID (jvm_env, jp->class_ptr,
+ "Config", "(Lorg/collectd/api/OConfigItem;)I");
+ DEBUG ("java plugin: cjni_init_one_plugin: "
+ "jp->class_name = %s; jp->m_config = %p;",
+ jp->class_name, (void *) jp->m_config);
+
+ jp->m_init = (*jvm_env)->GetMethodID (jvm_env, jp->class_ptr,
"Init", "()I");
- DEBUG ("jp->method_init = %p;", (void *) jp->method_init);
- jp->method_read = (*jvm_env)->GetMethodID (jvm_env, jp->class_ptr,
- "Read", "()I");
- DEBUG ("jp->method_read = %p;", (void *) jp->method_read);
- jp->method_shutdown = (*jvm_env)->GetMethodID (jvm_env, jp->class_ptr,
+ DEBUG ("java plugin: cjni_init_one_plugin: "
+ "jp->class_name = %s; jp->m_init = %p;",
+ jp->class_name, (void *) jp->m_init);
+
+ jp->m_write = (*jvm_env)->GetMethodID (jvm_env, jp->class_ptr,
+ "Write", "(Lorg/collectd/api/ValueList;)I");
+ DEBUG ("java plugin: cjni_init_one_plugin: "
+ "jp->class_name = %s; jp->m_write = %p;",
+ jp->class_name, (void *) jp->m_write);
+
+ jp->m_shutdown = (*jvm_env)->GetMethodID (jvm_env, jp->class_ptr,
"Shutdown", "()I");
- DEBUG ("jp->method_shutdown = %p;", (void *) jp->method_shutdown);
+ DEBUG ("java plugin: cjni_init_one_plugin: "
+ "jp->class_name = %s; jp->m_shutdown = %p;",
+ jp->class_name, (void *) jp->m_shutdown);
- status = (*jvm_env)->CallIntMethod (jvm_env, jp->object_ptr,
- jp->method_init);
- if (status != 0)
+ if (jp->ci != NULL)
{
- ERROR ("cjni_init_one_plugin: Initializing `%s' object failed "
- "with status %i.", jp->class_name, status);
- return (-1);
+ if (jp->m_config == NULL)
+ {
+ WARNING ("java plugin: Configuration for the `%s' plugin is present, "
+ "but plugin doesn't provide a configuration method.",
+ jp->class_name);
+ }
+ else /* if (jp->m_config != NULL) */
+ {
+ jobject o_ocitem;
+
+ o_ocitem = ctoj_oconfig_item (jvm_env, jp->ci);
+ if (o_ocitem == NULL)
+ {
+ ERROR ("java plugin: Creating an OConfigItem object failed. "
+ "Can't pass configuration information to the `%s' plugin!",
+ jp->class_name);
+ }
+ else /* if (o_ocitem != NULL) */
+ {
+ status = (*jvm_env)->CallIntMethod (jvm_env,
+ jp->object_ptr, jp->m_config, o_ocitem);
+ if (status != 0)
+ {
+ ERROR ("java plugin: cjni_init_one_plugin: "
+ "Configuring the `%s' object failed with status %i.",
+ jp->class_name, status);
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_ocitem);
+ return (-1);
+ }
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_ocitem);
+ } /* if (o_ocitem != NULL) */
+ } /* if (jp->m_config != NULL) */
+ } /* if (jp->ci != NULL) */
+
+ if (jp->m_init != NULL)
+ {
+ status = (*jvm_env)->CallIntMethod (jvm_env, jp->object_ptr,
+ jp->m_init);
+ if (status != 0)
+ {
+ ERROR ("java plugin: cjni_init_one_plugin: "
+ "Initializing `%s' object failed with status %i.",
+ jp->class_name, status);
+ return (-1);
+ }
}
jp->flags |= CJNI_FLAG_ENABLED;
+ ssnprintf (plugin_name, sizeof (plugin_name), "java:%s", jp->class_name);
+
+ if (jp->m_write != NULL)
+ {
+ user_data_t ud;
+
+ memset (&ud, 0, sizeof (ud));
+ ud.data = jp;
+ ud.free_func = NULL;
+
+ plugin_register_write (plugin_name, cjni_write, &ud);
+ }
+
return (0);
} /* }}} int cjni_init_one_plugin */
static int cjni_init_plugins (JNIEnv *jvm_env) /* {{{ */
{
+ int have_shutdown;
size_t j;
+ have_shutdown = 0;
+
for (j = 0; j < java_plugins_num; j++)
+ {
cjni_init_one_plugin (jvm_env, &java_plugins[j]);
+ if (java_plugins[j].m_shutdown != NULL)
+ have_shutdown++;
+ }
+
+ if (have_shutdown > 0)
+ plugin_register_shutdown ("java", cjni_shutdown);
+
return (0);
} /* }}} int cjni_init_plugins */
jclass api_class_ptr;
int status;
- api_class_ptr = (*jvm_env)->FindClass (jvm_env, "org.collectd.java.CollectdAPI");
+ api_class_ptr = (*jvm_env)->FindClass (jvm_env, "org.collectd.api.CollectdAPI");
if (api_class_ptr == NULL)
{
- ERROR ("cjni_init_native: Cannot find API class `org.collectd.java.CollectdAPI'.");
+ ERROR ("cjni_init_native: Cannot find API class `org.collectd.api.CollectdAPI'.");
return (-1);
}
{
JNIEnv *jvm_env;
JavaVMInitArgs vm_args;
- JavaVMOption vm_options[2];
+ JavaVMOption vm_options[jvm_argc];
int status;
+ size_t i;
if (jvm != NULL)
return (0);
+ status = pthread_key_create (&jvm_env_key, cjni_jvm_env_destroy);
+ if (status != 0)
+ {
+ ERROR ("java plugin: cjni_init: pthread_key_create failed "
+ "with status %i.", status);
+ return (-1);
+ }
+
jvm_env = NULL;
memset (&vm_args, 0, sizeof (vm_args));
vm_args.version = JNI_VERSION_1_2;
vm_args.options = vm_options;
- vm_args.nOptions = sizeof (vm_options) / sizeof (vm_options[0]);
+ vm_args.nOptions = (jint) jvm_argc;
+ for (i = 0; i < jvm_argc; i++)
+ {
+ DEBUG ("java plugin: cjni_init: jvm_argv[%zu] = %s", i, jvm_argv[i]);
+ vm_args.options[i].optionString = jvm_argv[i];
+ }
+ /*
vm_args.options[0].optionString = "-verbose:jni";
vm_args.options[1].optionString = "-Djava.class.path=/home/octo/collectd/bindings/java";
+ */
status = JNI_CreateJavaVM (&jvm, (void **) &jvm_env, (void **) &vm_args);
if (status != 0)
return (0);
} /* }}} int cjni_init */
-static int cjni_read_one_plugin (JNIEnv *jvm_env, java_plugin_t *jp) /* {{{ */
-{
- int status;
-
- if ((jp == NULL)
- || ((jp->flags & CJNI_FLAG_ENABLED) == 0)
- || (jp->method_read == NULL))
- return (0);
-
- DEBUG ("java plugin: Calling: %s.Read()", jp->class_name);
-
- status = (*jvm_env)->CallIntMethod (jvm_env, jp->object_ptr,
- jp->method_read);
- if (status != 0)
- {
- ERROR ("cjni_read_one_plugin: Calling `Read' on an `%s' object failed "
- "with status %i.", jp->class_name, status);
- return (-1);
- }
-
- return (0);
-} /* }}} int cjni_read_one_plugin */
-
-static int cjni_read_plugins (JNIEnv *jvm_env) /* {{{ */
-{
- size_t j;
-
- for (j = 0; j < java_plugins_num; j++)
- cjni_read_one_plugin (jvm_env, &java_plugins[j]);
-
- return (0);
-} /* }}} int cjni_read_plugins */
-
-static int cjni_read (void) /* {{{ */
-{
- JNIEnv *jvm_env;
- JavaVMAttachArgs args;
- int status;
-
- if (jvm == NULL)
- {
- ERROR ("java plugin: cjni_read: jvm == NULL");
- return (-1);
- }
-
- jvm_env = NULL;
- memset (&args, 0, sizeof (args));
- args.version = JNI_VERSION_1_2;
-
- status = (*jvm)->AttachCurrentThread (jvm, (void **) &jvm_env, &args);
- if (status != 0)
- {
- ERROR ("java plugin: cjni_read: AttachCurrentThread failed with status %i.",
- status);
- return (-1);
- }
-
- cjni_read_plugins (jvm_env);
-
- status = (*jvm)->DetachCurrentThread (jvm);
- if (status != 0)
- {
- ERROR ("java plugin: cjni_read: DetachCurrentThread failed with status %i.",
- status);
- return (-1);
- }
-
- return (0);
-} /* }}} int cjni_read */
-
-static int cjni_shutdown_one_plugin (JNIEnv *jvm_env, /* {{{ */
- java_plugin_t *jp)
-{
- int status;
-
- if ((jp == NULL)
- || ((jp->flags & CJNI_FLAG_ENABLED) == 0)
- || (jp->method_shutdown == NULL))
- return (0);
-
- status = (*jvm_env)->CallIntMethod (jvm_env, jp->object_ptr,
- jp->method_shutdown);
- if (status != 0)
- {
- ERROR ("cjni_shutdown_one_plugin: Destroying an `%s' object failed "
- "with status %i.", jp->class_name, status);
- return (-1);
- }
- jp->flags &= ~CJNI_FLAG_ENABLED;
-
- return (0);
-} /* }}} int cjni_shutdown_one_plugin */
-
-static int cjni_shutdown_plugins (JNIEnv *jvm_env) /* {{{ */
-{
- size_t j;
-
- for (j = 0; j < java_plugins_num; j++)
- cjni_shutdown_one_plugin (jvm_env, &java_plugins[j]);
-
- return (0);
-} /* }}} int cjni_shutdown_plugins */
-
-static int cjni_shutdown (void) /* {{{ */
-{
- JNIEnv *jvm_env;
- JavaVMAttachArgs args;
- int status;
-
- if (jvm == NULL)
- return (0);
-
- jvm_env = NULL;
- memset (&args, 0, sizeof (args));
- args.version = JNI_VERSION_1_2;
-
- status = (*jvm)->AttachCurrentThread (jvm, (void **) &jvm_env, &args);
- if (status != 0)
- {
- ERROR ("java plugin: cjni_read: AttachCurrentThread failed with status %i.",
- status);
- return (-1);
- }
-
- cjni_shutdown_plugins (jvm_env);
-
- (*jvm)->DestroyJavaVM (jvm);
- jvm = NULL;
- jvm_env = NULL;
-
- return (0);
-} /* }}} int cjni_shutdown */
-
void module_register (void)
{
+ plugin_register_complex_config ("java", cjni_config);
plugin_register_init ("java", cjni_init);
- plugin_register_read ("java", cjni_read);
- plugin_register_shutdown ("java", cjni_shutdown);
} /* void module_register (void) */
/* vim: set sw=2 sts=2 et fdm=marker : */
projects / collectd.git / blobdiff