#define CJNI_FLAG_ENABLED 0x0001
int flags;
- jmethodID method_init;
- jmethodID method_read;
- jmethodID method_shutdown;
+ jmethodID m_init;
+ jmethodID m_read;
+ jmethodID m_write;
+ jmethodID m_shutdown;
};
typedef struct java_plugin_s java_plugin_t;
/* }}} */
*/
static JavaVM *jvm = NULL;
-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;
+
+static java_plugin_t *java_plugins = NULL;
+static size_t java_plugins_num = 0;
/*
- * Conversion functons
- *
- * - jtoc_*: From Java to C
- * - ctoj_*: From C to Java
+ * 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 m_set;
+ jstring o_string;
+
+ /* Create a java.lang.String */
+ o_string = (*jvm_env)->NewStringUTF (jvm_env,
+ (string != NULL) ? string : "");
+ if (o_string == NULL)
+ {
+ ERROR ("java plugin: ctoj_string: NewStringUTF failed.");
+ return (-1);
+ }
+
+ /* 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: ctoj_string: Cannot find method `void %s (String)'.",
+ method_name);
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_string);
+ return (-1);
+ }
+
+ /* 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);
+
+ DEBUG ("java plugin: ctoj_string: ->%s (%s);",
+ method_name, (string != NULL) ? 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: ctoj_int: Cannot find method `void %s (int)'.",
+ method_name);
+ return (-1);
+ }
+
+ (*jvm_env)->CallVoidMethod (jvm_env, object_ptr, m_set, value);
+
+ DEBUG ("java plugin: ctoj_int: ->%s (%i);",
+ method_name, (int) value);
+
+ return (0);
+} /* }}} int ctoj_int */
+
+static int ctoj_long (JNIEnv *jvm_env, /* {{{ */
+ jlong value,
+ jclass class_ptr, jobject object_ptr, const char *method_name)
+{
+ jmethodID m_set;
+
+ /* 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: ctoj_long: Cannot find method `void %s (long)'.",
+ method_name);
+ return (-1);
+ }
+
+ (*jvm_env)->CallVoidMethod (jvm_env, object_ptr, m_set, value);
+
+ DEBUG ("java plugin: ctoj_long: ->%s (%"PRIi64");",
+ method_name, (int64_t) value);
+
+ return (0);
+} /* }}} int ctoj_long */
+
+static int ctoj_double (JNIEnv *jvm_env, /* {{{ */
+ jdouble value,
+ jclass class_ptr, jobject object_ptr, const char *method_name)
+{
+ jmethodID m_set;
+
+ /* 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: ctoj_double: Cannot find method `void %s (double)'.",
+ method_name);
+ return (-1);
+ }
+
+ (*jvm_env)->CallVoidMethod (jvm_env, object_ptr, m_set, value);
+
+ DEBUG ("java plugin: ctoj_double: ->%s (%g);",
+ method_name, (double) value);
+
+ 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)
+{
+ if (ds_type == DS_TYPE_COUNTER)
+ {
+ jclass c_long;
+ jmethodID m_long_constructor;
+
+ jlong tmp_long;
+
+ /* 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);
+ }
+
+ 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);
+ }
+
+ 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)
+ {
+ jclass c_double;
+ jmethodID m_double_constructor;
+
+ jdouble tmp_double;
+
+ /* 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_value_to_number: Looking up the "
+ "`Double (double)' constructor failed.");
+ return (NULL);
+ }
+
+ tmp_double = (jdouble) value.gauge;
+ return ((*jvm_env)->NewObject (jvm_env,
+ c_double, m_double_constructor, tmp_double));
+ }
+ else
+ {
+ return (NULL);
+ }
+} /* }}} jobject ctoj_value_to_number */
+
+/* Convert a data_source_t to a org.collectd.protocol.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.protocol.DataSource");
+ if (c_datasource == NULL)
+ {
+ ERROR ("java plugin: ctoj_data_source: "
+ "FindClass (org.collectd.protocol.DataSource) failed.");
+ return (NULL);
+ }
+
+ /* 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 data_set_t to a java.util.List<DataSource> */
+static jobject ctoj_data_set (JNIEnv *jvm_env, const data_set_t *ds) /* {{{ */
+{
+ jclass c_arraylist;
+ jmethodID m_constructor;
+ jmethodID m_add;
+ jobject o_dataset;
+ int i;
+
+ /* Look up the java.util.ArrayList class */
+ c_arraylist = (*jvm_env)->FindClass (jvm_env, "java.util.ArrayList");
+ if (c_arraylist == NULL)
+ {
+ ERROR ("java plugin: ctoj_data_set: Looking up the "
+ "java.util.ArrayList class failed.");
+ return (NULL);
+ }
+
+ /* Search for the `ArrayList (int capacity)' constructor. */
+ m_constructor = (*jvm_env)->GetMethodID (jvm_env,
+ c_arraylist, "<init>", "()V");
+ if (m_constructor == NULL)
+ {
+ ERROR ("java plugin: ctoj_data_set: Looking up the "
+ "`ArrayList (void)' constructor failed.");
+ return (NULL);
+ }
+
+ /* Search for the `boolean add (Object element)' method. */
+ m_add = (*jvm_env)->GetMethodID (jvm_env,
+ c_arraylist, "add", "(Ljava/lang/Object;)Z");
+ if (m_add == NULL)
+ {
+ ERROR ("java plugin: ctoj_data_set: Looking up the "
+ "`add (Object)' method failed.");
+ return (NULL);
+ }
+
+ o_dataset = (*jvm_env)->NewObject (jvm_env, c_arraylist, m_constructor);
+ if (o_dataset == NULL)
+ {
+ ERROR ("java plugin: ctoj_data_set: "
+ "Creating an ArrayList object failed.");
+ return (NULL);
+ }
+
+ for (i = 0; i < ds->ds_num; i++)
+ {
+ jobject o_datasource;
+ jboolean status;
+
+ 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);
+ }
+
+ status = (*jvm_env)->CallBooleanMethod (jvm_env,
+ o_dataset, m_add, o_datasource);
+ if (!status)
+ {
+ ERROR ("java plugin: ctoj_data_set: ArrayList.add returned FALSE.");
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_datasource);
+ (*jvm_env)->DeleteLocalRef (jvm_env, o_dataset);
+ return (NULL);
+ }
+
+ (*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_setdatasource;
+ jobject o_dataset;
+
+ /* Look for the `void setDataSource (List<DataSource> ds)' method. */
+ m_setdatasource = (*jvm_env)->GetMethodID (jvm_env, c_valuelist,
+ "setDataSource", "(Ljava/util/List;)V");
+ if (m_setdatasource == NULL)
+ {
+ ERROR ("java plugin: ctoj_value_list_add_data_set: "
+ "Cannot find the `void setDataSource (List<DataSource> ds)' method.");
+ return (-1);
+ }
+
+ /* Create a List<DataSource> 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_setdatasource, 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.protocol.ValueList");
+ if (c_valuelist == NULL)
+ {
+ ERROR ("java plugin: ctoj_value_list: "
+ "FindClass (org.collectd.protocol.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,
method_name, "()J");
if (method_id == NULL)
{
- ERROR ("java plugin: jtoc_string: Cannot find method `long %s ()'.",
+ ERROR ("java plugin: jtoc_long: Cannot find method `long %s ()'.",
method_name);
return (-1);
}
return (0);
} /* }}} int jtoc_values_array */
+/* Convert a org.collectd.protocol.ValueList to a value_list_t. */
static int jtoc_value_list (JNIEnv *jvm_env, value_list_t *vl, /* {{{ */
jobject object_ptr)
{
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.");
+ ERROR ("java plugin: jtoc_value_list: jtoc_long (getTime) failed.");
return (-1);
}
vl->time = (time_t) tmp_long;
class_ptr, object_ptr, "getInterval");
if (status != 0)
{
- ERROR ("java plugin: jtoc_value_list: jtoc_string (getInterval) failed.");
+ ERROR ("java plugin: jtoc_value_list: jtoc_long (getInterval) failed.");
return (-1);
}
vl->interval = (int) tmp_long;
/*
* Functions
*/
+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->flags = 0;
+ jp->m_init = NULL;
+ jp->m_read = NULL;
+ jp->m_write = NULL;
+ jp->m_shutdown = NULL;
+
+ java_plugins_num++;
+
+ return (0);
+} /* }}} int cjni_config_load_plugin */
+
+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
+ {
+ 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_init_one_plugin (JNIEnv *jvm_env, java_plugin_t *jp) /* {{{ */
{
jmethodID constructor_id;
return (-1);
}
- jp->method_init = (*jvm_env)->GetMethodID (jvm_env, jp->class_ptr,
+ 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,
+ 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 ("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_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 ("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->m_init != NULL)
{
- ERROR ("cjni_init_one_plugin: Initializing `%s' object failed "
- "with status %i.", jp->class_name, status);
- return (-1);
+ 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;
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);
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)
if ((jp == NULL)
|| ((jp->flags & CJNI_FLAG_ENABLED) == 0)
- || (jp->method_read == NULL))
+ || (jp->m_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);
+ jp->m_read);
if (status != 0)
{
- ERROR ("cjni_read_one_plugin: Calling `Read' on an `%s' object failed "
- "with status %i.", jp->class_name, status);
+ ERROR ("java plugin: 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 */
+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_plugins (JNIEnv *jvm_env, /* {{{ */
+ const data_set_t *ds, const value_list_t *vl)
+{
+ size_t j;
+
+ jobject vl_java;
+
+ 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);
+ }
+
+ for (j = 0; j < java_plugins_num; j++)
+ cjni_write_one_plugin (jvm_env, &java_plugins[j], vl_java);
+
+ (*jvm_env)->DeleteLocalRef (jvm_env, vl_java);
+
+ return (0);
+} /* }}} int cjni_write_plugins */
+
+static int cjni_write (const data_set_t *ds, const value_list_t *vl) /* {{{ */
+{
+ JNIEnv *jvm_env;
+ JavaVMAttachArgs args;
+ int status;
+
+ if (jvm == NULL)
+ {
+ ERROR ("java plugin: cjni_write: 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_write: AttachCurrentThread failed with status %i.",
+ status);
+ return (-1);
+ }
+
+ cjni_write_plugins (jvm_env, ds, vl);
+
+ status = (*jvm)->DetachCurrentThread (jvm);
+ if (status != 0)
+ {
+ ERROR ("java plugin: cjni_write: DetachCurrentThread failed with status %i.",
+ status);
+ return (-1);
+ }
+
+ return (0);
+} /* }}} int cjni_write */
+
static int cjni_shutdown_one_plugin (JNIEnv *jvm_env, /* {{{ */
java_plugin_t *jp)
{
if ((jp == NULL)
|| ((jp->flags & CJNI_FLAG_ENABLED) == 0)
- || (jp->method_shutdown == NULL))
+ || (jp->m_shutdown == NULL))
return (0);
status = (*jvm_env)->CallIntMethod (jvm_env, jp->object_ptr,
- jp->method_shutdown);
+ jp->m_shutdown);
if (status != 0)
{
ERROR ("cjni_shutdown_one_plugin: Destroying an `%s' object failed "
JNIEnv *jvm_env;
JavaVMAttachArgs args;
int status;
+ size_t i;
if (jvm == NULL)
return (0);
jvm = NULL;
jvm_env = NULL;
+ for (i = 0; i < jvm_argc; i++)
+ {
+ sfree (jvm_argv[i]);
+ }
+ sfree (jvm_argv);
+ jvm_argc = 0;
+
+ for (i = 0; i < java_plugins_num; i++)
+ {
+ sfree (java_plugins[i].class_name);
+ }
+ sfree (java_plugins);
+ java_plugins_num = 0;
+
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_write ("java", cjni_write);
plugin_register_shutdown ("java", cjni_shutdown);
} /* void module_register (void) */
projects / collectd.git / blobdiff