#include "collectd.h"
#include "plugin.h"
#include "common.h"
+#include "filter_chain.h"
#include <pthread.h>
#include <jni.h>
typedef struct java_plugin_class_s java_plugin_class_t;
/* }}} */
-struct java_plugin_config_s /* {{{ */
-{
- char *name;
- oconfig_item_t *ci;
-};
-typedef struct java_plugin_config_s java_plugin_config_t;
-/* }}} */
-
#define CB_TYPE_CONFIG 1
#define CB_TYPE_INIT 2
#define CB_TYPE_READ 3
#define CB_TYPE_SHUTDOWN 6
#define CB_TYPE_LOG 7
#define CB_TYPE_NOTIFICATION 8
+#define CB_TYPE_MATCH 9
+#define CB_TYPE_TARGET 10
struct cjni_callback_info_s /* {{{ */
{
char *name;
static java_plugin_class_t *java_classes_list = NULL;
static size_t java_classes_list_len;
-/* List of `config_item_t's for Java plugins */
-static java_plugin_config_t *java_plugin_configs = NULL;
-static size_t java_plugin_configs_num = 0;
-
/* List of config, init, and shutdown callbacks. */
static cjni_callback_info_t *java_callbacks = NULL;
static size_t java_callbacks_num = 0;
static pthread_mutex_t java_callbacks_lock = PTHREAD_MUTEX_INITIALIZER;
+static oconfig_item_t *config_block = NULL;
+
/*
* Prototypes
*
static void cjni_log (int severity, const char *message, user_data_t *ud);
static int cjni_notification (const notification_t *n, user_data_t *ud);
+/* Create, destroy, and match/invoke functions, used by both, matches AND
+ * targets. */
+static int cjni_match_target_create (const oconfig_item_t *ci, void **user_data);
+static int cjni_match_target_destroy (void **user_data);
+static int cjni_match_target_invoke (const data_set_t *ds, value_list_t *vl,
+ notification_meta_t **meta, void **user_data);
+
/*
* C to Java conversion functions
*/
jmethodID m_long_constructor;
/* Look up the java.lang.Long class */
- c_long = (*jvm_env)->FindClass (jvm_env, "java.lang.Long");
+ c_long = (*jvm_env)->FindClass (jvm_env, "java/lang/Long");
if (c_long == NULL)
{
ERROR ("java plugin: ctoj_jlong_to_number: Looking up the "
jmethodID m_double_constructor;
/* Look up the java.lang.Long class */
- c_double = (*jvm_env)->FindClass (jvm_env, "java.lang.Double");
+ c_double = (*jvm_env)->FindClass (jvm_env, "java/lang/Double");
if (c_double == NULL)
{
ERROR ("java plugin: ctoj_jdouble_to_number: Looking up the "
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));
+ if (ds_type == DS_TYPE_DERIVE)
+ return (ctoj_jlong_to_number (jvm_env, (jlong) value.derive));
+ if (ds_type == DS_TYPE_ABSOLUTE)
+ return (ctoj_jlong_to_number (jvm_env, (jlong) value.absolute));
else
return (NULL);
} /* }}} jobject ctoj_value_to_number */
-/* Convert a data_source_t to a org.collectd.api.DataSource */
+/* Convert a data_source_t to a org/collectd/api/DataSource */
static jobject ctoj_data_source (JNIEnv *jvm_env, /* {{{ */
const data_source_t *dsrc)
{
/* Look up the DataSource class */
c_datasource = (*jvm_env)->FindClass (jvm_env,
- "org.collectd.api.DataSource");
+ "org/collectd/api/DataSource");
if (c_datasource == NULL)
{
ERROR ("java plugin: ctoj_data_source: "
- "FindClass (org.collectd.api.DataSource) failed.");
+ "FindClass (org/collectd/api/DataSource) failed.");
return (NULL);
}
return (o_datasource);
} /* }}} jobject ctoj_data_source */
-/* Convert a oconfig_value_t to a org.collectd.api.OConfigValue */
+/* Convert a oconfig_value_t to a org/collectd/api/OConfigValue */
static jobject ctoj_oconfig_value (JNIEnv *jvm_env, /* {{{ */
oconfig_value_t ocvalue)
{
o_argument = NULL;
c_ocvalue = (*jvm_env)->FindClass (jvm_env,
- "org.collectd.api.OConfigValue");
+ "org/collectd/api/OConfigValue");
if (c_ocvalue == NULL)
{
ERROR ("java plugin: ctoj_oconfig_value: "
- "FindClass (org.collectd.api.OConfigValue) failed.");
+ "FindClass (org/collectd/api/OConfigValue) failed.");
return (NULL);
}
return (o_ocvalue);
} /* }}} jobject ctoj_oconfig_value */
-/* Convert a oconfig_item_t to a org.collectd.api.OConfigItem */
+/* Convert a oconfig_item_t to a org/collectd/api/OConfigItem */
static jobject ctoj_oconfig_item (JNIEnv *jvm_env, /* {{{ */
const oconfig_item_t *ci)
{
jobject o_ocitem;
int i;
- c_ocitem = (*jvm_env)->FindClass (jvm_env, "org.collectd.api.OConfigItem");
+ 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.");
+ "FindClass (org/collectd/api/OConfigItem) failed.");
return (NULL);
}
return (NULL);
}
- (*jvm_env)->CallVoidMethod (jvm_env, o_ocitem, m_addvalue, o_child);
+ (*jvm_env)->CallVoidMethod (jvm_env, o_ocitem, m_addchild, 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 */
+/* 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;
jobject o_dataset;
int i;
- /* Look up the org.collectd.api.DataSet class */
- c_dataset = (*jvm_env)->FindClass (jvm_env, "org.collectd.api.DataSet");
+ /* 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.");
+ "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");
+ c_dataset, "<init>", "(Ljava/lang/String;)V");
if (m_constructor == NULL)
{
ERROR ("java plugin: ctoj_data_set: Looking up the "
/* Search for the `void addDataSource (DataSource)' method. */
m_add = (*jvm_env)->GetMethodID (jvm_env,
- c_dataset, "addDataSource", "(Lorg.collectd.api.DataSource;)V");
+ c_dataset, "addDataSource", "(Lorg/collectd/api/DataSource;)V");
if (m_add == NULL)
{
ERROR ("java plugin: ctoj_data_set: Looking up the "
/* Look for the `void setDataSource (List<DataSource> ds)' method. */
m_setdataset = (*jvm_env)->GetMethodID (jvm_env, c_valuelist,
- "setDataSet", "(Lorg.collectd.api.DataSet;)V");
+ "setDataSet", "(Lorg/collectd/api/DataSet;)V");
if (m_setdataset == NULL)
{
ERROR ("java plugin: ctoj_value_list_add_data_set: "
return (0);
} /* }}} int ctoj_value_list_add_data_set */
-/* Convert a value_list_t (and data_set_t) to a org.collectd.api.ValueList */
+/* Convert a value_list_t (and data_set_t) to a org/collectd/api/ValueList */
static jobject ctoj_value_list (JNIEnv *jvm_env, /* {{{ */
const data_set_t *ds, const value_list_t *vl)
{
/* First, create a new ValueList instance..
* Look up the class.. */
c_valuelist = (*jvm_env)->FindClass (jvm_env,
- "org.collectd.api.ValueList");
+ "org/collectd/api/ValueList");
if (c_valuelist == NULL)
{
ERROR ("java plugin: ctoj_value_list: "
- "FindClass (org.collectd.api.ValueList) failed.");
+ "FindClass (org/collectd/api/ValueList) failed.");
return (NULL);
}
return (o_valuelist);
} /* }}} jobject ctoj_value_list */
-/* Convert a notification_t to a org.collectd.api.Notification */
+/* Convert a notification_t to a org/collectd/api/Notification */
static jobject ctoj_notification (JNIEnv *jvm_env, /* {{{ */
const notification_t *n)
{
/* First, create a new Notification instance..
* Look up the class.. */
c_notification = (*jvm_env)->FindClass (jvm_env,
- "org.collectd.api.Notification");
+ "org/collectd/api/Notification");
if (c_notification == NULL)
{
ERROR ("java plugin: ctoj_notification: "
- "FindClass (org.collectd.api.Notification) failed.");
+ "FindClass (org/collectd/api/Notification) failed.");
return (NULL);
}
class_ptr = (*jvm_env)->GetObjectClass (jvm_env, object_ptr);
- if (ds_type == DS_TYPE_COUNTER)
+ if (ds_type == DS_TYPE_GAUGE)
{
- jlong tmp_long;
+ jdouble tmp_double;
- status = jtoc_long (jvm_env, &tmp_long,
- class_ptr, object_ptr, "longValue");
+ status = jtoc_double (jvm_env, &tmp_double,
+ class_ptr, object_ptr, "doubleValue");
if (status != 0)
{
ERROR ("java plugin: jtoc_value: "
- "jtoc_long failed.");
+ "jtoc_double failed.");
return (-1);
}
- (*ret_value).counter = (counter_t) tmp_long;
+ (*ret_value).gauge = (gauge_t) tmp_double;
}
else
{
- jdouble tmp_double;
+ jlong tmp_long;
- status = jtoc_double (jvm_env, &tmp_double,
- class_ptr, object_ptr, "doubleValue");
+ status = jtoc_long (jvm_env, &tmp_long,
+ class_ptr, object_ptr, "longValue");
if (status != 0)
{
ERROR ("java plugin: jtoc_value: "
- "jtoc_double failed.");
+ "jtoc_long failed.");
return (-1);
}
- (*ret_value).gauge = (gauge_t) tmp_double;
+
+ if (ds_type == DS_TYPE_DERIVE)
+ (*ret_value).derive = (derive_t) tmp_long;
+ else if (ds_type == DS_TYPE_ABSOLUTE)
+ (*ret_value).absolute = (absolute_t) tmp_long;
+ else
+ (*ret_value).counter = (counter_t) tmp_long;
}
return (0);
return (0);
} /* }}} int jtoc_values_array */
-/* Convert a org.collectd.api.ValueList to a value_list_t. */
+/* 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)
{
return (0);
} /* }}} int jtoc_value_list */
-/* Convert a org.collectd.api.Notification to a notification_t. */
+/* Convert a org/collectd/api/Notification to a notification_t. */
static int jtoc_notification (JNIEnv *jvm_env, notification_t *n, /* {{{ */
jobject object_ptr)
{
ud.data = (void *) cbi;
ud.free_func = cjni_callback_info_destroy;
- plugin_register_complex_read (cbi->name, cjni_read, &ud);
+ plugin_register_complex_read (/* group = */ NULL, cbi->name, cjni_read,
+ /* interval = */ NULL, &ud);
(*jvm_env)->DeleteLocalRef (jvm_env, o_read);
return (0);
} /* }}} jint cjni_api_register_notification */
+static jint JNICALL cjni_api_register_match_target (JNIEnv *jvm_env, /* {{{ */
+ jobject this, jobject o_name, jobject o_match, int type)
+{
+ int status;
+ const char *c_name;
+
+ c_name = (*jvm_env)->GetStringUTFChars (jvm_env, o_name, 0);
+ if (c_name == NULL)
+ {
+ ERROR ("java plugin: cjni_api_register_match_target: "
+ "GetStringUTFChars failed.");
+ return (-1);
+ }
+
+ status = cjni_callback_register (jvm_env, o_name, o_match, type);
+ if (status != 0)
+ {
+ (*jvm_env)->ReleaseStringUTFChars (jvm_env, o_name, c_name);
+ return (-1);
+ }
+
+ if (type == CB_TYPE_MATCH)
+ {
+ match_proc_t m_proc;
+
+ memset (&m_proc, 0, sizeof (m_proc));
+ m_proc.create = cjni_match_target_create;
+ m_proc.destroy = cjni_match_target_destroy;
+ m_proc.match = (void *) cjni_match_target_invoke;
+
+ status = fc_register_match (c_name, m_proc);
+ }
+ else if (type == CB_TYPE_TARGET)
+ {
+ target_proc_t t_proc;
+
+ memset (&t_proc, 0, sizeof (t_proc));
+ t_proc.create = cjni_match_target_create;
+ t_proc.destroy = cjni_match_target_destroy;
+ t_proc.invoke = cjni_match_target_invoke;
+
+ status = fc_register_target (c_name, t_proc);
+ }
+ else
+ {
+ ERROR ("java plugin: cjni_api_register_match_target: "
+ "Don't know whether to create a match or a target.");
+ (*jvm_env)->ReleaseStringUTFChars (jvm_env, o_name, c_name);
+ return (-1);
+ }
+
+ if (status != 0)
+ {
+ ERROR ("java plugin: cjni_api_register_match_target: "
+ "%s failed.",
+ (type == CB_TYPE_MATCH) ? "fc_register_match" : "fc_register_target");
+ (*jvm_env)->ReleaseStringUTFChars (jvm_env, o_name, c_name);
+ return (-1);
+ }
+
+ (*jvm_env)->ReleaseStringUTFChars (jvm_env, o_name, c_name);
+
+ return (0);
+} /* }}} jint cjni_api_register_match_target */
+
+static jint JNICALL cjni_api_register_match (JNIEnv *jvm_env, /* {{{ */
+ jobject this, jobject o_name, jobject o_match)
+{
+ return (cjni_api_register_match_target (jvm_env, this, o_name, o_match,
+ CB_TYPE_MATCH));
+} /* }}} jint cjni_api_register_match */
+
+static jint JNICALL cjni_api_register_target (JNIEnv *jvm_env, /* {{{ */
+ jobject this, jobject o_name, jobject o_target)
+{
+ return (cjni_api_register_match_target (jvm_env, this, o_name, o_target,
+ CB_TYPE_TARGET));
+} /* }}} jint cjni_api_register_target */
+
static void JNICALL cjni_api_log (JNIEnv *jvm_env, /* {{{ */
jobject this, jint severity, jobject o_message)
{
"(Ljava/lang/String;Lorg/collectd/api/CollectdNotificationInterface;)I",
cjni_api_register_notification },
+ { "registerMatch",
+ "(Ljava/lang/String;Lorg/collectd/api/CollectdMatchFactoryInterface;)I",
+ cjni_api_register_match },
+
+ { "registerTarget",
+ "(Ljava/lang/String;Lorg/collectd/api/CollectdTargetFactoryInterface;)I",
+ cjni_api_register_target },
+
{ "log",
"(ILjava/lang/String;)V",
cjni_api_log },
case CB_TYPE_NOTIFICATION:
method_name = "notification";
- method_signature = "(LLorg/collectd/api/Notification;)I";
+ method_signature = "(Lorg/collectd/api/Notification;)I";
+ break;
+
+ case CB_TYPE_MATCH:
+ method_name = "createMatch";
+ method_signature = "(Lorg/collectd/api/OConfigItem;)"
+ "Lorg/collectd/api/CollectdMatchInterface;";
+ break;
+
+ case CB_TYPE_TARGET:
+ method_name = "createTarget";
+ method_signature = "(Lorg/collectd/api/OConfigItem;)"
+ "Lorg/collectd/api/CollectdTargetInterface;";
break;
default:
(*jvm_env)->ReleaseStringUTFChars (jvm_env, o_name, c_name);
- cbi->class = (*jvm_env)->GetObjectClass (jvm_env, o_callback);
+ cbi->object = (*jvm_env)->NewGlobalRef (jvm_env, o_callback);
+ if (cbi->object == NULL)
+ {
+ ERROR ("java plugin: cjni_callback_info_create: NewGlobalRef failed.");
+ free (cbi);
+ return (NULL);
+ }
+
+ cbi->class = (*jvm_env)->GetObjectClass (jvm_env, cbi->object);
if (cbi->class == NULL)
{
ERROR ("java plugin: cjni_callback_info_create: GetObjectClass failed.");
return (NULL);
}
- cbi->object = o_callback;
-
cbi->method = (*jvm_env)->GetMethodID (jvm_env, cbi->class,
method_name, method_signature);
if (cbi->method == NULL)
return (NULL);
}
- (*jvm_env)->NewGlobalRef (jvm_env, o_callback);
-
return (cbi);
} /* }}} cjni_callback_info_t cjni_callback_info_create */
type_str = "shutdown";
break;
+ case CB_TYPE_MATCH:
+ type_str = "match";
+ break;
+
+ case CB_TYPE_TARGET:
+ type_str = "target";
+ break;
+
default:
type_str = "<unknown>";
}
return (0);
} /* }}} int cjni_callback_register */
+/* Callback for `pthread_key_create'. It frees the data contained in
+ * `jvm_env_key' and prints a warning if the reference counter is not zero. */
+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 */
+
+/* Register ``native'' functions with the JVM. Native functions are C-functions
+ * that can be called by Java code. */
+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/Collectd");
+ if (api_class_ptr == NULL)
+ {
+ ERROR ("cjni_init_native: Cannot find the API class \"org.collectd.api"
+ ".Collectd\". Please set the correct class path "
+ "using 'JVMArg \"-Djava.class.path=...\"'.");
+ 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 */
+
+/* Create the JVM. This is called when the first thread tries to access the JVM
+ * via cjni_thread_attach. */
+static int cjni_create_jvm (void) /* {{{ */
+{
+ JNIEnv *jvm_env;
+ JavaVMInitArgs vm_args;
+ 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_create_jvm: 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 = (jint) jvm_argc;
+
+ for (i = 0; i < jvm_argc; i++)
+ {
+ DEBUG ("java plugin: cjni_create_jvm: jvm_argv[%zu] = %s",
+ i, jvm_argv[i]);
+ vm_args.options[i].optionString = jvm_argv[i];
+ }
+
+ status = JNI_CreateJavaVM (&jvm, (void *) &jvm_env, (void *) &vm_args);
+ if (status != 0)
+ {
+ ERROR ("java plugin: cjni_create_jvm: "
+ "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 ("java plugin: cjni_create_jvm: cjni_init_native failed.");
+ return (-1);
+ }
+
+ DEBUG ("java plugin: The JVM has been created.");
+ return (0);
+} /* }}} int cjni_create_jvm */
+
/* Increase the reference counter to the JVM for this thread. If it was zero,
* attach the JVM first. */
static JNIEnv *cjni_thread_attach (void) /* {{{ */
cjni_jvm_env_t *cjni_env;
JNIEnv *jvm_env;
+ /* If we're the first thread to access the JVM, we'll have to create it
+ * first.. */
+ if (jvm == NULL)
+ {
+ int status;
+
+ status = cjni_create_jvm ();
+ if (status != 0)
+ {
+ ERROR ("java plugin: cjni_thread_attach: cjni_create_jvm failed.");
+ return (NULL);
+ }
+ }
+ assert (jvm != NULL);
+
cjni_env = pthread_getspecific (jvm_env_key);
if (cjni_env == NULL)
{
return (0);
} /* }}} JNIEnv *cjni_thread_attach */
-/* Callback for `pthread_key_create'. It frees the data contained in
- * `jvm_env_key' and prints a warning if the reference counter is not zero. */
-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 */
-
-/* Boring configuration functions.. {{{ */
static int cjni_config_add_jvm_arg (oconfig_item_t *ci) /* {{{ */
{
char **tmp;
return (-1);
}
+ if (jvm != NULL)
+ {
+ ERROR ("java plugin: All `JVMArg' options MUST appear before all "
+ "`LoadPlugin' options! The JVM is already started and I have to "
+ "ignore this argument: %s",
+ ci->values[0].value.string);
+ return (-1);
+ }
+
tmp = (char **) realloc (jvm_argv, sizeof (char *) * (jvm_argc + 1));
if (tmp == NULL)
{
static int cjni_config_load_plugin (oconfig_item_t *ci) /* {{{ */
{
- java_plugin_class_t *tmp;
+ JNIEnv *jvm_env;
+ java_plugin_class_t *class;
+ jmethodID constructor_id;
+ jobject tmp_object;
if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
{
return (-1);
}
- tmp = (java_plugin_class_t *) realloc (java_classes_list,
+ jvm_env = cjni_thread_attach ();
+ if (jvm_env == NULL)
+ return (-1);
+
+ class = (java_plugin_class_t *) realloc (java_classes_list,
(java_classes_list_len + 1) * sizeof (*java_classes_list));
- if (tmp == NULL)
+ if (class == NULL)
{
ERROR ("java plugin: realloc failed.");
+ cjni_thread_detach ();
return (-1);
}
- java_classes_list = tmp;
- tmp = java_classes_list + java_classes_list_len;
+ java_classes_list = class;
+ class = java_classes_list + java_classes_list_len;
- memset (tmp, 0, sizeof (*tmp));
- tmp->name = strdup (ci->values[0].value.string);
- if (tmp->name == NULL)
+ memset (class, 0, sizeof (*class));
+ class->name = strdup (ci->values[0].value.string);
+ if (class->name == NULL)
{
ERROR ("java plugin: strdup failed.");
+ cjni_thread_detach ();
return (-1);
}
- tmp->class = NULL;
- tmp->object = NULL;
+ class->class = NULL;
+ class->object = NULL;
+
+ { /* Replace all dots ('.') with slashes ('/'). Dots are usually used
+ thorough the Java community, but (Sun's) `FindClass' and friends need
+ slashes. */
+ size_t i;
+ for (i = 0; class->name[i] != 0; i++)
+ if (class->name[i] == '.')
+ class->name[i] = '/';
+ }
+
+ DEBUG ("java plugin: Loading class %s", class->name);
+
+ class->class = (*jvm_env)->FindClass (jvm_env, class->name);
+ if (class->class == NULL)
+ {
+ ERROR ("java plugin: cjni_config_load_plugin: FindClass (%s) failed.",
+ class->name);
+ cjni_thread_detach ();
+ free (class->name);
+ return (-1);
+ }
+
+ constructor_id = (*jvm_env)->GetMethodID (jvm_env, class->class,
+ "<init>", "()V");
+ if (constructor_id == NULL)
+ {
+ ERROR ("java plugin: cjni_config_load_plugin: "
+ "Could not find the constructor for `%s'.",
+ class->name);
+ cjni_thread_detach ();
+ free (class->name);
+ return (-1);
+ }
+
+ tmp_object = (*jvm_env)->NewObject (jvm_env, class->class,
+ constructor_id);
+ if (tmp_object != NULL)
+ class->object = (*jvm_env)->NewGlobalRef (jvm_env, tmp_object);
+ else
+ class->object = NULL;
+ if (class->object == NULL)
+ {
+ ERROR ("java plugin: cjni_config_load_plugin: "
+ "Could create a new `%s' object.",
+ class->name);
+ cjni_thread_detach ();
+ free (class->name);
+ return (-1);
+ }
+
+ cjni_thread_detach ();
java_classes_list_len++;
static int cjni_config_plugin_block (oconfig_item_t *ci) /* {{{ */
{
- java_plugin_config_t *tmp;
- char *name;
+ JNIEnv *jvm_env;
+ cjni_callback_info_t *cbi;
+ jobject o_ocitem;
+ const char *name;
size_t i;
+ jclass class;
+ jmethodID method;
+
if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
{
WARNING ("java plugin: `Plugin' blocks "
return (-1);
}
- name = strdup (ci->values[0].value.string);
- if (name == NULL)
+ name = ci->values[0].value.string;
+
+ cbi = NULL;
+ for (i = 0; i < java_callbacks_num; i++)
{
- ERROR ("java plugin: cjni_config_plugin_block: strdup faiiled.");
- return (-1);
+ if (java_callbacks[i].type != CB_TYPE_CONFIG)
+ continue;
+
+ if (strcmp (name, java_callbacks[i].name) != 0)
+ continue;
+
+ cbi = java_callbacks + i;
+ break;
}
- for (i = 0; i < java_plugin_configs_num; i++)
+ if (cbi == NULL)
{
- if (strcmp (java_plugin_configs[i].name, name) == 0)
- {
- WARNING ("java plugin: There is more than one <Plugin \"%s\"> block. "
- "This is currently not supported - "
- "only the first block will be used!",
- name);
- free (name);
- return (0);
- }
+ NOTICE ("java plugin: Configuration block for `%s' found, but no such "
+ "configuration callback has been registered. Please make sure, the "
+ "`LoadPlugin' lines precede the `Plugin' blocks.",
+ name);
+ return (0);
}
- tmp = (java_plugin_config_t *) realloc (java_plugin_configs,
- (java_plugin_configs_num + 1) * sizeof (*java_plugin_configs));
- if (tmp == NULL)
- {
- ERROR ("java plugin: cjni_config_plugin_block: realloc failed.");
- free (name);
+ DEBUG ("java plugin: Configuring %s", name);
+
+ jvm_env = cjni_thread_attach ();
+ if (jvm_env == NULL)
return (-1);
- }
- java_plugin_configs = tmp;
- tmp = java_plugin_configs + java_plugin_configs_num;
- tmp->name = name;
- tmp->ci = oconfig_clone (ci);
- if (tmp->ci == NULL)
+ o_ocitem = ctoj_oconfig_item (jvm_env, ci);
+ if (o_ocitem == NULL)
{
- ERROR ("java plugin: cjni_config_plugin_block: "
- "oconfig_clone failed for `%s'.",
- name);
- free (name);
+ ERROR ("java plugin: cjni_config_plugin_block: ctoj_oconfig_item failed.");
+ cjni_thread_detach ();
return (-1);
}
- DEBUG ("java plugin: cjni_config_plugin_block: "
- "Successfully copied config for `%s'.",
- name);
+ class = (*jvm_env)->GetObjectClass (jvm_env, cbi->object);
+ method = (*jvm_env)->GetMethodID (jvm_env, class,
+ "config", "(Lorg/collectd/api/OConfigItem;)I");
+
+ (*jvm_env)->CallIntMethod (jvm_env,
+ cbi->object, method, o_ocitem);
- java_plugin_configs_num++;
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_ocitem);
+ cjni_thread_detach ();
return (0);
} /* }}} int cjni_config_plugin_block */
-static int cjni_config (oconfig_item_t *ci) /* {{{ */
+static int cjni_config_perform (oconfig_item_t *ci) /* {{{ */
{
int success;
int errors;
DEBUG ("java plugin: jvm_argc = %zu;", jvm_argc);
DEBUG ("java plugin: java_classes_list_len = %zu;", java_classes_list_len);
- DEBUG ("java plugin: java_plugin_configs_num = %zu;",
- java_plugin_configs_num);
if ((success == 0) && (errors > 0))
{
}
return (0);
-} /* }}} int cjni_config */
-/* }}} */
+} /* }}} int cjni_config_perform */
+
+/* Copy the children of `ci' to the global `config_block' variable. */
+static int cjni_config_callback (oconfig_item_t *ci) /* {{{ */
+{
+ oconfig_item_t *ci_copy;
+ oconfig_item_t *tmp;
+
+ assert (ci != NULL);
+ if (ci->children_num == 0)
+ return (0); /* nothing to do */
+
+ ci_copy = oconfig_clone (ci);
+ if (ci_copy == NULL)
+ {
+ ERROR ("java plugin: oconfig_clone failed.");
+ return (-1);
+ }
+
+ if (config_block == NULL)
+ {
+ config_block = ci_copy;
+ return (0);
+ }
+
+ tmp = realloc (config_block->children,
+ (config_block->children_num + ci_copy->children_num) * sizeof (*tmp));
+ if (tmp == NULL)
+ {
+ ERROR ("java plugin: realloc failed.");
+ oconfig_free (ci_copy);
+ return (-1);
+ }
+ config_block->children = tmp;
+
+ /* Copy the pointers */
+ memcpy (config_block->children + config_block->children_num,
+ ci_copy->children,
+ ci_copy->children_num * sizeof (*ci_copy->children));
+ config_block->children_num += ci_copy->children_num;
+
+ /* Delete the pointers from the copy, so `oconfig_free' can't free them. */
+ memset (ci_copy->children, 0,
+ ci_copy->children_num * sizeof (*ci_copy->children));
+ ci_copy->children_num = 0;
+
+ oconfig_free (ci_copy);
+
+ return (0);
+} /* }}} int cjni_config_callback */
/* Free the data contained in the `user_data_t' pointer passed to `cjni_read'
* and `cjni_write'. In particular, delete the global reference to the Java
return (ret_status);
} /* }}} int cjni_notification */
-/* Iterate over `java_classes_list' and create one object of each class. This
- * will trigger the object's constructors, to the objects can register callback
- * methods. */
-static int cjni_load_plugins (JNIEnv *jvm_env) /* {{{ */
+/* Callbacks for matches implemented in Java */
+static int cjni_match_target_create (const oconfig_item_t *ci, /* {{{ */
+ void **user_data)
{
+ JNIEnv *jvm_env;
+ cjni_callback_info_t *cbi_ret;
+ cjni_callback_info_t *cbi_factory;
+ const char *name;
+ jobject o_ci;
+ jobject o_tmp;
+ int type;
size_t i;
- for (i = 0; i < java_classes_list_len; i++)
+ cbi_ret = NULL;
+ o_ci = NULL;
+ jvm_env = NULL;
+
+#define BAIL_OUT(status) \
+ if (cbi_ret != NULL) { \
+ free (cbi_ret->name); \
+ if ((jvm_env != NULL) && (cbi_ret->object != NULL)) \
+ (*jvm_env)->DeleteLocalRef (jvm_env, cbi_ret->object); \
+ } \
+ free (cbi_ret); \
+ if (jvm_env != NULL) { \
+ if (o_ci != NULL) \
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_ci); \
+ cjni_thread_detach (); \
+ } \
+ return (status)
+
+ if (jvm == NULL)
{
- java_plugin_class_t *class;
- jmethodID constructor_id;
+ ERROR ("java plugin: cjni_read: jvm == NULL");
+ BAIL_OUT (-1);
+ }
- class = java_classes_list + i;
+ jvm_env = cjni_thread_attach ();
+ if (jvm_env == NULL)
+ {
+ BAIL_OUT (-1);
+ }
- DEBUG ("java plugin: Loading class %s", class->name);
+ /* Find out whether to create a match or a target. */
+ if (strcasecmp ("Match", ci->key) == 0)
+ type = CB_TYPE_MATCH;
+ else if (strcasecmp ("Target", ci->key) == 0)
+ type = CB_TYPE_TARGET;
+ else
+ {
+ ERROR ("java plugin: cjni_match_target_create: Can't figure out whether "
+ "to create a match or a target.");
+ BAIL_OUT (-1);
+ }
- class->class = (*jvm_env)->FindClass (jvm_env, class->name);
- if (class->class == NULL)
- {
- ERROR ("java plugin: cjni_load_plugins: FindClass (%s) failed.",
- class->name);
- continue;
- }
+ /* This is the name of the match we should create. */
+ name = ci->values[0].value.string;
- constructor_id = (*jvm_env)->GetMethodID (jvm_env, class->class,
- "<init>", "()V");
- if (constructor_id == NULL)
- {
- ERROR ("java plugin: cjni_load_plugins: Could not find the constructor for `%s'.",
- class->name);
+ /* Lets see if we have a matching factory here.. */
+ cbi_factory = NULL;
+ for (i = 0; i < java_callbacks_num; i++)
+ {
+ if (java_callbacks[i].type != type)
continue;
- }
- class->object = (*jvm_env)->NewObject (jvm_env, class->class,
- constructor_id);
- if (class->object == NULL)
- {
- ERROR ("java plugin: cjni_load_plugins: Could create a new `%s' object.",
- class->name);
+ if (strcmp (name, java_callbacks[i].name) != 0)
continue;
- }
- (*jvm_env)->NewGlobalRef (jvm_env, class->object);
- } /* for (i = 0; i < java_classes_list_len; i++) */
+ cbi_factory = java_callbacks + i;
+ break;
+ }
+
+ /* Nope, no factory for that name.. */
+ if (cbi_factory == NULL)
+ {
+ ERROR ("java plugin: cjni_match_target_create: "
+ "No such match factory registered: %s",
+ name);
+ BAIL_OUT (-1);
+ }
+
+ /* We convert `ci' to its Java equivalent.. */
+ o_ci = ctoj_oconfig_item (jvm_env, ci);
+ if (o_ci == NULL)
+ {
+ ERROR ("java plugin: cjni_match_target_create: "
+ "ctoj_oconfig_item failed.");
+ BAIL_OUT (-1);
+ }
+
+ /* Allocate a new callback info structure. This is going to be our user_data
+ * pointer. */
+ cbi_ret = (cjni_callback_info_t *) malloc (sizeof (*cbi_ret));
+ if (cbi_ret == NULL)
+ {
+ ERROR ("java plugin: cjni_match_target_create: malloc failed.");
+ BAIL_OUT (-1);
+ }
+ memset (cbi_ret, 0, sizeof (*cbi_ret));
+ cbi_ret->object = NULL;
+ cbi_ret->type = type;
+
+ /* Lets fill the callback info structure.. First, the name: */
+ cbi_ret->name = strdup (name);
+ if (cbi_ret->name == NULL)
+ {
+ ERROR ("java plugin: cjni_match_target_create: strdup failed.");
+ BAIL_OUT (-1);
+ }
+
+ /* Then call the factory method so it creates a new object for us. */
+ o_tmp = (*jvm_env)->CallObjectMethod (jvm_env,
+ cbi_factory->object, cbi_factory->method, o_ci);
+ if (o_tmp == NULL)
+ {
+ ERROR ("java plugin: cjni_match_target_create: CallObjectMethod failed.");
+ BAIL_OUT (-1);
+ }
+
+ cbi_ret->object = (*jvm_env)->NewGlobalRef (jvm_env, o_tmp);
+ if (o_tmp == NULL)
+ {
+ ERROR ("java plugin: cjni_match_target_create: NewGlobalRef failed.");
+ BAIL_OUT (-1);
+ }
+
+ /* This is the class of the match. It is possibly different from the class of
+ * the match-factory! */
+ cbi_ret->class = (*jvm_env)->GetObjectClass (jvm_env, cbi_ret->object);
+ if (cbi_ret->class == NULL)
+ {
+ ERROR ("java plugin: cjni_match_target_create: GetObjectClass failed.");
+ BAIL_OUT (-1);
+ }
+
+ /* Lookup the `int match (DataSet, ValueList)' method. */
+ cbi_ret->method = (*jvm_env)->GetMethodID (jvm_env, cbi_ret->class,
+ /* method name = */ (type == CB_TYPE_MATCH) ? "match" : "invoke",
+ "(Lorg/collectd/api/DataSet;Lorg/collectd/api/ValueList;)I");
+ if (cbi_ret->method == NULL)
+ {
+ ERROR ("java plugin: cjni_match_target_create: GetMethodID failed.");
+ BAIL_OUT (-1);
+ }
+
+ /* Return the newly created match via the user_data pointer. */
+ *user_data = (void *) cbi_ret;
+
+ cjni_thread_detach ();
+
+ DEBUG ("java plugin: cjni_match_target_create: "
+ "Successfully created a `%s' %s.",
+ cbi_ret->name, (type == CB_TYPE_MATCH) ? "match" : "target");
+
+ /* Success! */
+ return (0);
+#undef BAIL_OUT
+} /* }}} int cjni_match_target_create */
+
+static int cjni_match_target_destroy (void **user_data) /* {{{ */
+{
+ cjni_callback_info_destroy (*user_data);
+ *user_data = NULL;
return (0);
-} /* }}} int cjni_load_plugins */
+} /* }}} int cjni_match_target_destroy */
-/* Iterate over `java_plugin_configs' and `java_callbacks' and call all
- * `config' callback methods for which a configuration is available. */
-static int cjni_config_plugins (JNIEnv *jvm_env) /* {{{ */
+static int cjni_match_target_invoke (const data_set_t *ds, /* {{{ */
+ value_list_t *vl, notification_meta_t **meta, void **user_data)
{
+ JNIEnv *jvm_env;
+ cjni_callback_info_t *cbi;
+ jobject o_vl;
+ jobject o_ds;
+ int ret_status;
int status;
- size_t i;
- size_t j;
- for (i = 0; i < java_plugin_configs_num; i++)
+ if (jvm == NULL)
{
- jobject o_ocitem;
+ ERROR ("java plugin: cjni_match_target_invoke: jvm == NULL");
+ return (-1);
+ }
- if (java_plugin_configs[i].ci == NULL)
- continue;
+ jvm_env = cjni_thread_attach ();
+ if (jvm_env == NULL)
+ return (-1);
- for (j = 0; j < java_callbacks_num; j++)
- {
- if (java_callbacks[j].type != CB_TYPE_CONFIG)
- continue;
+ cbi = (cjni_callback_info_t *) *user_data;
- if (strcmp (java_plugin_configs[i].name, java_callbacks[j].name) == 0)
- break;
- }
+ o_vl = ctoj_value_list (jvm_env, ds, vl);
+ if (o_vl == NULL)
+ {
+ ERROR ("java plugin: cjni_match_target_invoke: ctoj_value_list failed.");
+ cjni_thread_detach ();
+ return (-1);
+ }
- if (j >= java_callbacks_num)
- {
- NOTICE ("java plugin: Configuration for `%s' is present, but no such "
- "configuration callback has been registered.",
- java_plugin_configs[i].name);
- continue;
- }
+ o_ds = ctoj_data_set (jvm_env, ds);
+ if (o_ds == NULL)
+ {
+ ERROR ("java plugin: cjni_match_target_invoke: ctoj_value_list failed.");
+ cjni_thread_detach ();
+ return (-1);
+ }
+
+ ret_status = (*jvm_env)->CallIntMethod (jvm_env, cbi->object, cbi->method,
+ o_ds, o_vl);
- DEBUG ("java plugin: Configuring %s", java_plugin_configs[i].name);
+ DEBUG ("java plugin: cjni_match_target_invoke: Method returned %i.", ret_status);
- o_ocitem = ctoj_oconfig_item (jvm_env, java_plugin_configs[i].ci);
- if (o_ocitem == NULL)
+ /* If we're executing a target, copy the `ValueList' back to our
+ * `value_list_t'. */
+ if (cbi->type == CB_TYPE_TARGET)
+ {
+ value_list_t new_vl;
+
+ memset (&new_vl, 0, sizeof (new_vl));
+ status = jtoc_value_list (jvm_env, &new_vl, o_vl);
+ if (status != 0)
{
- ERROR ("java plugin: cjni_config_plugins: ctoj_oconfig_item failed.");
- continue;
+ ERROR ("java plugin: cjni_match_target_invoke: "
+ "jtoc_value_list failed.");
}
+ else /* if (status == 0) */
+ {
+ /* plugin_dispatch_values assures that this is dynamically allocated
+ * memory. */
+ sfree (vl->values);
- status = (*jvm_env)->CallIntMethod (jvm_env,
- java_callbacks[j].object, java_callbacks[j].method, o_ocitem);
- WARNING ("java plugin: Config callback for `%s' returned status %i.",
- java_plugin_configs[i].name, status);
- } /* for (i = 0; i < java_plugin_configs; i++) */
+ /* This will replace the vl->values pointer to a new, dynamically
+ * allocated piece of memory. */
+ memcpy (vl, &new_vl, sizeof (*vl));
+ }
+ } /* if (cbi->type == CB_TYPE_TARGET) */
- return (0);
-} /* }}} int cjni_config_plugins */
+ status = cjni_thread_detach ();
+ if (status != 0)
+ ERROR ("java plugin: cjni_read: cjni_thread_detach failed.");
+
+ return (ret_status);
+} /* }}} int cjni_match_target_invoke */
/* Iterate over `java_callbacks' and call all CB_TYPE_INIT callbacks. */
static int cjni_init_plugins (JNIEnv *jvm_env) /* {{{ */
memset (&args, 0, sizeof (args));
args.version = JNI_VERSION_1_2;
- status = (*jvm)->AttachCurrentThread (jvm, (void **) &jvm_env, &args);
+ status = (*jvm)->AttachCurrentThread (jvm, (void *) &jvm_env, &args);
if (status != 0)
{
ERROR ("java plugin: cjni_shutdown: AttachCurrentThread failed with status %i.",
jvm_argc = 0;
sfree (jvm_argv);
- /* Free the copied configuration */
- for (i = 0; i < java_plugin_configs_num; i++)
- {
- sfree (java_plugin_configs[i].name);
- oconfig_free (java_plugin_configs[i].ci);
- }
- java_plugin_configs_num = 0;
- sfree (java_plugin_configs);
-
return (0);
} /* }}} int cjni_shutdown */
-/* Register ``native'' functions with the JVM. Native functions are C-functions
- * that can be called by Java code. */
-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.Collectd");
- if (api_class_ptr == NULL)
- {
- ERROR ("cjni_init_native: Cannot find API class `org.collectd.api.Collectd'.");
- 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 */
-
/* Initialization: Create a JVM, load all configured classes and call their
* `config' and `init' callback methods. */
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);
-
- status = pthread_key_create (&jvm_env_key, cjni_jvm_env_destroy);
- if (status != 0)
+ if ((config_block == NULL) && (jvm == NULL))
{
- ERROR ("java plugin: cjni_init: pthread_key_create failed "
- "with status %i.", status);
+ ERROR ("java plugin: cjni_init: No configuration block for "
+ "the java plugin was found.");
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 = (jint) jvm_argc;
-
- for (i = 0; i < jvm_argc; i++)
+ if (config_block != NULL)
{
- DEBUG ("java plugin: cjni_init: jvm_argv[%zu] = %s", i, jvm_argv[i]);
- vm_args.options[i].optionString = jvm_argv[i];
+
+ cjni_config_perform (config_block);
+ oconfig_free (config_block);
+ config_block = NULL;
}
- /*
- 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)
+ if (jvm == NULL)
{
- ERROR ("cjni_init: JNI_CreateJavaVM failed with status %i.",
- status);
+ ERROR ("java plugin: cjni_init: jvm == NULL");
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.");
+ jvm_env = cjni_thread_attach ();
+ if (jvm_env == NULL)
return (-1);
- }
- cjni_load_plugins (jvm_env);
- cjni_config_plugins (jvm_env);
cjni_init_plugins (jvm_env);
+ cjni_thread_detach ();
return (0);
} /* }}} int cjni_init */
void module_register (void)
{
- plugin_register_complex_config ("java", cjni_config);
+ plugin_register_complex_config ("java", cjni_config_callback);
plugin_register_init ("java", cjni_init);
plugin_register_shutdown ("java", cjni_shutdown);
} /* void module_register (void) */
projects / collectd.git / blobdiff