jclass class_ptr;
jobject object_ptr;
+ oconfig_item_t *ci;
+
#define CJNI_FLAG_ENABLED 0x0001
int flags;
+ jmethodID m_config;
jmethodID m_init;
jmethodID m_read;
jmethodID m_write;
return (0);
} /* }}} int ctoj_double */
-/* Convert a value_t to a java.lang.Number */
-static jobject ctoj_value_to_number (JNIEnv *jvm_env, /* {{{ */
- value_t value, int ds_type)
+/* Convert a jlong to a java.lang.Number */
+static jobject ctoj_jlong_to_number (JNIEnv *jvm_env, jlong value) /* {{{ */
{
- if (ds_type == DS_TYPE_COUNTER)
+ jclass c_long;
+ jmethodID m_long_constructor;
+
+ /* Look up the java.lang.Long class */
+ c_long = (*jvm_env)->FindClass (jvm_env, "java.lang.Long");
+ if (c_long == NULL)
{
- jclass c_long;
- jmethodID m_long_constructor;
+ ERROR ("java plugin: ctoj_jlong_to_number: Looking up the "
+ "java.lang.Long class failed.");
+ return (NULL);
+ }
- jlong tmp_long;
+ 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);
+ }
- /* 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_value_to_number: Looking up the "
- "java.lang.Long class failed.");
- return (NULL);
- }
+ return ((*jvm_env)->NewObject (jvm_env,
+ c_long, m_long_constructor, value));
+} /* }}} jobject ctoj_jlong_to_number */
- m_long_constructor = (*jvm_env)->GetMethodID (jvm_env,
- c_long, "<init>", "(J)V");
- if (m_long_constructor == NULL)
- {
- ERROR ("java plugin: ctoj_value_to_number: Looking up the "
- "`Long (long)' constructor failed.");
- return (NULL);
- }
+/* 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;
- tmp_long = (jlong) value.counter;
- return ((*jvm_env)->NewObject (jvm_env,
- c_long, m_long_constructor, tmp_long));
- }
- else if (ds_type == DS_TYPE_GAUGE)
+ /* Look up the java.lang.Long class */
+ c_double = (*jvm_env)->FindClass (jvm_env, "java.lang.Double");
+ if (c_double == NULL)
{
- jclass c_double;
- jmethodID m_double_constructor;
-
- jdouble tmp_double;
+ ERROR ("java plugin: ctoj_jdouble_to_number: Looking up the "
+ "java.lang.Double class failed.");
+ return (NULL);
+ }
- /* 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_value_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);
+ }
- m_double_constructor = (*jvm_env)->GetMethodID (jvm_env,
- c_double, "<init>", "(D)V");
- if (m_double_constructor == NULL)
- {
- ERROR ("java plugin: ctoj_value_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 */
- tmp_double = (jdouble) value.gauge;
- return ((*jvm_env)->NewObject (jvm_env,
- c_double, m_double_constructor, tmp_double));
- }
+/* 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.protocol.DataSource */
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: ctoj_oconfig_value: Cannot find the "
+ "`OConfigValue (boolean)' constructor.");
+ return (NULL);
+ }
+
+ 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)
+ {
+ 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);
+ }
+
+ o_argument = (*jvm_env)->NewStringUTF (jvm_env, ocvalue.value.string);
+ if (o_argument == NULL)
+ {
+ ERROR ("java plugin: ctoj_oconfig_value: "
+ "Creating a String object failed.");
+ return (NULL);
+ }
+ }
+ 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);
+ }
+
+ 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);
+ }
+
+ assert (m_ocvalue_constructor != NULL);
+ assert (o_argument != NULL);
+
+ 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);
+ }
+
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_argument);
+ return (o_ocvalue);
+} /* }}} jobject ctoj_oconfig_value */
+
+/* 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;
+
+ 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);
+ }
+
+ /* 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: ctoj_oconfig_item: Cannot find the "
+ "`OConfigItem (String)' constructor.");
+ return (NULL);
+ }
+
+ m_addvalue = (*jvm_env)->GetMethodID (jvm_env, c_ocitem,
+ "addValue", "(Lorg/collectd/api/OConfigValue;)V");
+ if (m_addvalue == NULL)
+ {
+ ERROR ("java plugin: ctoj_oconfig_item: Cannot find the "
+ "`addValue (OConfigValue)' method.");
+ return (NULL);
+ }
+
+ m_addchild = (*jvm_env)->GetMethodID (jvm_env, c_ocitem,
+ "addChild", "(Lorg/collectd/api/OConfigItem;)V");
+ if (m_addchild == NULL)
+ {
+ ERROR ("java plugin: ctoj_oconfig_item: Cannot find the "
+ "`addChild (OConfigItem)' method.");
+ return (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: ctoj_oconfig_item: "
+ "Creating String object failed.");
+ return (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: ctoj_oconfig_item: "
+ "Creating an OConfigItem object failed.");
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_key);
+ return (NULL);
+ }
+
+ /* 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_value;
+
+ o_value = ctoj_oconfig_value (jvm_env, ci->values[i]);
+ if (o_value == NULL)
+ {
+ ERROR ("java plugin: ctoj_oconfig_item: "
+ "Creating an OConfigValue object failed.");
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_ocitem);
+ return (NULL);
+ }
+
+ (*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: ctoj_oconfig_item: "
+ "Creating an OConfigItem object failed.");
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_ocitem);
+ return (NULL);
+ }
+
+ (*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 java.util.List<DataSource> */
static jobject ctoj_data_set (JNIEnv *jvm_env, const data_set_t *ds) /* {{{ */
{
ERROR ("java plugin: jtoc_value_list: jtoc_long (getTime) failed.");
return (-1);
}
- vl->time = (time_t) tmp_long;
+ /* 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");
return (-1);
}
- plugin_dispatch_values (&vl);
+ status = plugin_dispatch_values (&vl);
sfree (vl.values);
- return (0);
+ 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 JNINativeMethod jni_api_functions[] =
{
- { "DispatchValues", "(Lorg/collectd/protocol/ValueList;)I", cjni_api_dispatch_values }
+ { "DispatchValues", "(Lorg/collectd/protocol/ValueList;)I", cjni_api_dispatch_values },
+ { "GetDS", "(Ljava/lang/String;)Ljava/util/List;", cjni_api_get_ds }
};
static size_t jni_api_functions_num = sizeof (jni_api_functions)
/ sizeof (jni_api_functions[0]);
jp->class_ptr = NULL;
jp->object_ptr = NULL;
+ jp->ci = NULL;
jp->flags = 0;
+ jp->m_config = NULL;
jp->m_init = NULL;
jp->m_read = NULL;
jp->m_write = NULL;
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;
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);
return (0);
} /* }}} int cjni_config */
-static int cjni_init_one_plugin (JNIEnv *jvm_env, java_plugin_t *jp) /* {{{ */
-{
- jmethodID constructor_id;
- int status;
-
- jp->class_ptr = (*jvm_env)->FindClass (jvm_env, jp->class_name);
- if (jp->class_ptr == NULL)
- {
- ERROR ("cjni_init_one_plugin: FindClass (%s) failed.",
- jp->class_name);
- return (-1);
- }
-
- constructor_id = (*jvm_env)->GetMethodID (jvm_env, jp->class_ptr,
- "<init>", "()V");
- if (constructor_id == NULL)
- {
- ERROR ("cjni_init_one_plugin: Could not find the constructor for `%s'.",
- jp->class_name);
- return (-1);
- }
-
- jp->object_ptr = (*jvm_env)->NewObject (jvm_env, jp->class_ptr,
- constructor_id);
- if (jp->object_ptr == NULL)
- {
- ERROR ("cjni_init_one_plugin: Could create a new `%s' object.",
- jp->class_name);
- return (-1);
- }
-
- jp->m_init = (*jvm_env)->GetMethodID (jvm_env, jp->class_ptr,
- "Init", "()I");
- DEBUG ("java plugin: cjni_init_one_plugin: "
- "jp->class_name = %s; jp->m_init = %p;",
- jp->class_name, (void *) jp->m_init);
-
- jp->m_read = (*jvm_env)->GetMethodID (jvm_env, jp->class_ptr,
- "Read", "()I");
- DEBUG ("java plugin: cjni_init_one_plugin: "
- "jp->class_name = %s; jp->m_read = %p;",
- jp->class_name, (void *) jp->m_read);
-
- jp->m_write = (*jvm_env)->GetMethodID (jvm_env, jp->class_ptr,
- "Write", "(Lorg/collectd/protocol/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 ("java plugin: cjni_init_one_plugin: "
- "jp->class_name = %s; jp->m_shutdown = %p;",
- jp->class_name, (void *) jp->m_shutdown);
-
- if (jp->m_init != NULL)
- {
- status = (*jvm_env)->CallIntMethod (jvm_env, jp->object_ptr,
- jp->m_init);
- if (status != 0)
- {
- ERROR ("cjni_init_one_plugin: Initializing `%s' object failed "
- "with status %i.", jp->class_name, status);
- return (-1);
- }
- }
- jp->flags |= CJNI_FLAG_ENABLED;
-
- return (0);
-} /* }}} int cjni_init_one_plugin */
-
-static int cjni_init_plugins (JNIEnv *jvm_env) /* {{{ */
-{
- size_t j;
-
- for (j = 0; j < java_plugins_num; j++)
- cjni_init_one_plugin (jvm_env, &java_plugins[j]);
-
- return (0);
-} /* }}} int cjni_init_plugins */
-
-static int cjni_init_native (JNIEnv *jvm_env) /* {{{ */
-{
- jclass api_class_ptr;
- int status;
-
- 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.api.CollectdAPI'.");
- return (-1);
- }
-
- status = (*jvm_env)->RegisterNatives (jvm_env, api_class_ptr,
- jni_api_functions, (jint) jni_api_functions_num);
- if (status != 0)
- {
- ERROR ("cjni_init_native: RegisterNatives failed with status %i.", status);
- return (-1);
- }
-
- return (0);
-} /* }}} int cjni_init_native */
-
-static int cjni_init (void) /* {{{ */
-{
- JNIEnv *jvm_env;
- JavaVMInitArgs vm_args;
- JavaVMOption vm_options[jvm_argc];
-
- int status;
- size_t i;
-
- if (jvm != NULL)
- return (0);
-
- 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 = (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)
- {
- ERROR ("cjni_init: JNI_CreateJavaVM failed with status %i.",
- status);
- return (-1);
- }
- assert (jvm != NULL);
- assert (jvm_env != NULL);
-
- /* Call RegisterNatives */
- status = cjni_init_native (jvm_env);
- if (status != 0)
- {
- ERROR ("cjni_init: cjni_init_native failed.");
- return (-1);
- }
-
- cjni_init_plugins (jvm_env);
-
- return (0);
-} /* }}} int cjni_init */
-
static int cjni_read_one_plugin (JNIEnv *jvm_env, java_plugin_t *jp) /* {{{ */
{
int status;
for (i = 0; i < java_plugins_num; i++)
{
sfree (java_plugins[i].class_name);
+ oconfig_free (java_plugins[i].ci);
}
sfree (java_plugins);
java_plugins_num = 0;
return (0);
} /* }}} int cjni_shutdown */
+static int cjni_init_one_plugin (JNIEnv *jvm_env, java_plugin_t *jp) /* {{{ */
+{
+ jmethodID constructor_id;
+ int status;
+
+ jp->class_ptr = (*jvm_env)->FindClass (jvm_env, jp->class_name);
+ if (jp->class_ptr == NULL)
+ {
+ ERROR ("cjni_init_one_plugin: FindClass (%s) failed.",
+ jp->class_name);
+ return (-1);
+ }
+
+ constructor_id = (*jvm_env)->GetMethodID (jvm_env, jp->class_ptr,
+ "<init>", "()V");
+ if (constructor_id == NULL)
+ {
+ ERROR ("cjni_init_one_plugin: Could not find the constructor for `%s'.",
+ jp->class_name);
+ return (-1);
+ }
+
+ jp->object_ptr = (*jvm_env)->NewObject (jvm_env, jp->class_ptr,
+ constructor_id);
+ if (jp->object_ptr == NULL)
+ {
+ ERROR ("cjni_init_one_plugin: Could create a new `%s' object.",
+ jp->class_name);
+ return (-1);
+ }
+
+ 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 ("java plugin: cjni_init_one_plugin: "
+ "jp->class_name = %s; jp->m_init = %p;",
+ jp->class_name, (void *) jp->m_init);
+
+ jp->m_read = (*jvm_env)->GetMethodID (jvm_env, jp->class_ptr,
+ "Read", "()I");
+ DEBUG ("java plugin: cjni_init_one_plugin: "
+ "jp->class_name = %s; jp->m_read = %p;",
+ jp->class_name, (void *) jp->m_read);
+
+ jp->m_write = (*jvm_env)->GetMethodID (jvm_env, jp->class_ptr,
+ "Write", "(Lorg/collectd/protocol/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 ("java plugin: cjni_init_one_plugin: "
+ "jp->class_name = %s; jp->m_shutdown = %p;",
+ jp->class_name, (void *) jp->m_shutdown);
+
+ if (jp->ci != NULL)
+ {
+ 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;
+
+ return (0);
+} /* }}} int cjni_init_one_plugin */
+
+static int cjni_init_plugins (JNIEnv *jvm_env) /* {{{ */
+{
+ size_t j;
+
+ int have_read;
+ int have_write;
+ int have_shutdown;
+
+ have_read = 0;
+ have_write = 0;
+ 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_read != NULL)
+ have_read++;
+ if (java_plugins[j].m_write != NULL)
+ have_write++;
+ if (java_plugins[j].m_shutdown != NULL)
+ have_shutdown++;
+ }
+
+ if (have_read > 0)
+ plugin_register_read ("java", cjni_read);
+ if (have_write > 0)
+ plugin_register_write ("java", cjni_write);
+ if (have_shutdown > 0)
+ plugin_register_shutdown ("java", cjni_shutdown);
+
+
+ return (0);
+} /* }}} int cjni_init_plugins */
+
+static int cjni_init_native (JNIEnv *jvm_env) /* {{{ */
+{
+ jclass api_class_ptr;
+ int status;
+
+ 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.api.CollectdAPI'.");
+ return (-1);
+ }
+
+ status = (*jvm_env)->RegisterNatives (jvm_env, api_class_ptr,
+ jni_api_functions, (jint) jni_api_functions_num);
+ if (status != 0)
+ {
+ ERROR ("cjni_init_native: RegisterNatives failed with status %i.", status);
+ return (-1);
+ }
+
+ return (0);
+} /* }}} int cjni_init_native */
+
+static int cjni_init (void) /* {{{ */
+{
+ JNIEnv *jvm_env;
+ JavaVMInitArgs vm_args;
+ JavaVMOption vm_options[jvm_argc];
+
+ int status;
+ size_t i;
+
+ if (jvm != NULL)
+ return (0);
+
+ 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 = (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)
+ {
+ ERROR ("cjni_init: JNI_CreateJavaVM failed with status %i.",
+ status);
+ return (-1);
+ }
+ assert (jvm != NULL);
+ assert (jvm_env != NULL);
+
+ /* Call RegisterNatives */
+ status = cjni_init_native (jvm_env);
+ if (status != 0)
+ {
+ ERROR ("cjni_init: cjni_init_native failed.");
+ return (-1);
+ }
+
+ cjni_init_plugins (jvm_env);
+
+ return (0);
+} /* }}} int cjni_init */
+
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_write ("java", cjni_write);
- plugin_register_shutdown ("java", cjni_shutdown);
} /* void module_register (void) */
/* vim: set sw=2 sts=2 et fdm=marker : */
projects / collectd.git / blobdiff