[Asterisk-code-review] ARI: Added new functionality to unload a single module. (asterisk[13])

Benjamin Keith Ford asteriskteam at digium.com
Tue Jul 7 14:29:41 CDT 2015


Benjamin Keith Ford has uploaded a new change for review.

  https://gerrit.asterisk.org/808

Change subject: ARI: Added new functionality to unload a single module.
......................................................................

ARI: Added new functionality to unload a single module.

An http request can be sent to unload an Asterisk module. If the
module can not be unloaded or is already unloaded, an error response
will be returned.

The command "curl -v -u user:pass -X DELETE 'http://localhost:8088
/ari/asterisk/modules/{moduleName}'" (or something similar, depending
on configuration) can be run in the terminal to acces this new
functionality.

For more information, see:
https://wiki.asterisk.org/wiki.display/~bford/Asterisk+ARI+Resource

* Added new ARI functionality
* Asterisk modules can be unloaded through http requests

ASTERISK-25173

Change-Id: I535a95f5676deb02651522761ecbdc0b00b5ac57
---
M res/ari/ari_model_validators.c
M res/ari/ari_model_validators.h
M res/ari/resource_asterisk.c
M res/ari/resource_asterisk.h
M res/res_ari_asterisk.c
M rest-api/api-docs/asterisk.json
6 files changed, 323 insertions(+), 2 deletions(-)


  git pull ssh://gerrit.asterisk.org:29418/asterisk refs/changes/08/808/1

diff --git a/res/ari/ari_model_validators.c b/res/ari/ari_model_validators.c
index fe61ad4..2f54b8d 100644
--- a/res/ari/ari_model_validators.c
+++ b/res/ari/ari_model_validators.c
@@ -308,6 +308,108 @@
 	return ast_ari_validate_config_info;
 }
 
+int ast_ari_validate_module(struct ast_json *json)
+{
+	int res = 1;
+	struct ast_json_iter *iter;
+	int has_description = 0;
+	int has_name = 0;
+	int has_status = 0;
+	int has_support_level = 0;
+	int has_use_count = 0;
+
+	for (iter = ast_json_object_iter(json); iter; iter = ast_json_object_iter_next(json, iter)) {
+		if (strcmp("description", ast_json_object_iter_key(iter)) == 0) {
+			int prop_is_valid;
+			has_description = 1;
+			prop_is_valid = ast_ari_validate_string(
+				ast_json_object_iter_value(iter));
+			if (!prop_is_valid) {
+				ast_log(LOG_ERROR, "ARI Module field description failed validation\n");
+				res = 0;
+			}
+		} else
+		if (strcmp("name", ast_json_object_iter_key(iter)) == 0) {
+			int prop_is_valid;
+			has_name = 1;
+			prop_is_valid = ast_ari_validate_string(
+				ast_json_object_iter_value(iter));
+			if (!prop_is_valid) {
+				ast_log(LOG_ERROR, "ARI Module field name failed validation\n");
+				res = 0;
+			}
+		} else
+		if (strcmp("status", ast_json_object_iter_key(iter)) == 0) {
+			int prop_is_valid;
+			has_status = 1;
+			prop_is_valid = ast_ari_validate_string(
+				ast_json_object_iter_value(iter));
+			if (!prop_is_valid) {
+				ast_log(LOG_ERROR, "ARI Module field status failed validation\n");
+				res = 0;
+			}
+		} else
+		if (strcmp("support_level", ast_json_object_iter_key(iter)) == 0) {
+			int prop_is_valid;
+			has_support_level = 1;
+			prop_is_valid = ast_ari_validate_string(
+				ast_json_object_iter_value(iter));
+			if (!prop_is_valid) {
+				ast_log(LOG_ERROR, "ARI Module field support_level failed validation\n");
+				res = 0;
+			}
+		} else
+		if (strcmp("use_count", ast_json_object_iter_key(iter)) == 0) {
+			int prop_is_valid;
+			has_use_count = 1;
+			prop_is_valid = ast_ari_validate_int(
+				ast_json_object_iter_value(iter));
+			if (!prop_is_valid) {
+				ast_log(LOG_ERROR, "ARI Module field use_count failed validation\n");
+				res = 0;
+			}
+		} else
+		{
+			ast_log(LOG_ERROR,
+				"ARI Module has undocumented field %s\n",
+				ast_json_object_iter_key(iter));
+			res = 0;
+		}
+	}
+
+	if (!has_description) {
+		ast_log(LOG_ERROR, "ARI Module missing required field description\n");
+		res = 0;
+	}
+
+	if (!has_name) {
+		ast_log(LOG_ERROR, "ARI Module missing required field name\n");
+		res = 0;
+	}
+
+	if (!has_status) {
+		ast_log(LOG_ERROR, "ARI Module missing required field status\n");
+		res = 0;
+	}
+
+	if (!has_support_level) {
+		ast_log(LOG_ERROR, "ARI Module missing required field support_level\n");
+		res = 0;
+	}
+
+	if (!has_use_count) {
+		ast_log(LOG_ERROR, "ARI Module missing required field use_count\n");
+		res = 0;
+	}
+
+	return res;
+}
+
+ari_validator ast_ari_validate_module_fn(void)
+{
+	return ast_ari_validate_module;
+}
+
 int ast_ari_validate_set_id(struct ast_json *json)
 {
 	int res = 1;
diff --git a/res/ari/ari_model_validators.h b/res/ari/ari_model_validators.h
index 1fafba3..41b9179 100644
--- a/res/ari/ari_model_validators.h
+++ b/res/ari/ari_model_validators.h
@@ -207,6 +207,24 @@
 ari_validator ast_ari_validate_config_info_fn(void);
 
 /*!
+ * \brief Validator for Module.
+ *
+ * Details of an Asterisk module
+ *
+ * \param json JSON object to validate.
+ * \returns True (non-zero) if valid.
+ * \returns False (zero) if invalid.
+ */
+int ast_ari_validate_module(struct ast_json *json);
+
+/*!
+ * \brief Function pointer to ast_ari_validate_module().
+ *
+ * See \ref ast_ari_model_validators.h for more details.
+ */
+ari_validator ast_ari_validate_module_fn(void);
+
+/*!
  * \brief Validator for SetId.
  *
  * Effective user/group id
@@ -1244,6 +1262,12 @@
  * - max_open_files: int
  * - name: string (required)
  * - setid: SetId (required)
+ * Module
+ * - description: string (required)
+ * - name: string (required)
+ * - status: string (required)
+ * - support_level: string (required)
+ * - use_count: int (required)
  * SetId
  * - group: string (required)
  * - user: string (required)
diff --git a/res/ari/resource_asterisk.c b/res/ari/resource_asterisk.c
index 9871df4..fc71534 100644
--- a/res/ari/resource_asterisk.c
+++ b/res/ari/resource_asterisk.c
@@ -33,6 +33,7 @@
 
 #include "asterisk/ast_version.h"
 #include "asterisk/buildinfo.h"
+#include "asterisk/module.h"
 #include "asterisk/paths.h"
 #include "asterisk/pbx.h"
 #include "resource_asterisk.h"
@@ -140,6 +141,41 @@
 	ast_ari_response_ok(response, ast_json_ref(json));
 }
 
+void ast_ari_asterisk_unload_module(struct ast_variable *headers,
+	struct ast_ari_asterisk_unload_module_args *args,
+	struct ast_ari_response *response)
+{
+	int unload_result;
+	enum ast_module_unload_mode unload_mode = AST_FORCE_FIRM;
+
+	ast_assert(response != NULL);
+
+	if (ast_strlen_zero(args->module_name)) {
+		ast_ari_response_error(
+			response, 400, "Bad Request",
+			"Module name is required");
+		return;
+	}
+
+	if (!ast_module_check(args->module_name)) {
+		ast_ari_response_error(
+			response, 404, "Not Found",
+			"Module does not exist");
+		return;
+	}
+
+	unload_result = ast_unload_resource(args->module_name, unload_mode);
+
+	if (unload_result != 0) {
+		ast_ari_response_error(
+			response, 409, "Conflict",
+			"Module could not be unloaded");
+		return;
+	}
+
+	ast_ari_response_no_content(response);
+}
+
 void ast_ari_asterisk_get_global_var(struct ast_variable *headers,
 	struct ast_ari_asterisk_get_global_var_args *args,
 	struct ast_ari_response *response)
diff --git a/res/ari/resource_asterisk.h b/res/ari/resource_asterisk.h
index dc4b183..ef979fc 100644
--- a/res/ari/resource_asterisk.h
+++ b/res/ari/resource_asterisk.h
@@ -67,6 +67,19 @@
  * \param[out] response HTTP response
  */
 void ast_ari_asterisk_get_info(struct ast_variable *headers, struct ast_ari_asterisk_get_info_args *args, struct ast_ari_response *response);
+/*! Argument struct for ast_ari_asterisk_unload_module() */
+struct ast_ari_asterisk_unload_module_args {
+	/*! Module's name */
+	const char *module_name;
+};
+/*!
+ * \brief Unload an Asterisk module.
+ *
+ * \param headers HTTP headers
+ * \param args Swagger parameters
+ * \param[out] response HTTP response
+ */
+void ast_ari_asterisk_unload_module(struct ast_variable *headers, struct ast_ari_asterisk_unload_module_args *args, struct ast_ari_response *response);
 /*! Argument struct for ast_ari_asterisk_get_global_var() */
 struct ast_ari_asterisk_get_global_var_args {
 	/*! The variable to get */
diff --git a/res/res_ari_asterisk.c b/res/res_ari_asterisk.c
index 6118297..ba08f3d 100644
--- a/res/res_ari_asterisk.c
+++ b/res/res_ari_asterisk.c
@@ -209,6 +209,67 @@
 	ast_free(args.only);
 	return;
 }
+/*!
+ * \brief Parameter parsing callback for /asterisk/modules/{moduleName}.
+ * \param get_params GET parameters in the HTTP request.
+ * \param path_vars Path variables extracted from the request.
+ * \param headers HTTP headers.
+ * \param[out] response Response to the HTTP request.
+ */
+static void ast_ari_asterisk_unload_module_cb(
+	struct ast_tcptls_session_instance *ser,
+	struct ast_variable *get_params, struct ast_variable *path_vars,
+	struct ast_variable *headers, struct ast_ari_response *response)
+{
+	struct ast_ari_asterisk_unload_module_args args = {};
+	struct ast_variable *i;
+	RAII_VAR(struct ast_json *, body, NULL, ast_json_unref);
+#if defined(AST_DEVMODE)
+	int is_valid;
+	int code;
+#endif /* AST_DEVMODE */
+
+	for (i = path_vars; i; i = i->next) {
+		if (strcmp(i->name, "moduleName") == 0) {
+			args.module_name = (i->value);
+		} else
+		{}
+	}
+	ast_ari_asterisk_unload_module(headers, &args, response);
+#if defined(AST_DEVMODE)
+	code = response->response_code;
+
+	switch (code) {
+	case 0: /* Implementation is still a stub, or the code wasn't set */
+		is_valid = response->message == NULL;
+		break;
+	case 500: /* Internal Server Error */
+	case 501: /* Not Implemented */
+	case 400: /* Module name is required. */
+	case 404: /* Module does not exist. */
+	case 409: /* Module could not be unloaded. */
+		is_valid = 1;
+		break;
+	default:
+		if (200 <= code && code <= 299) {
+			is_valid = ast_ari_validate_void(
+				response->message);
+		} else {
+			ast_log(LOG_ERROR, "Invalid error response %d for /asterisk/modules/{moduleName}\n", code);
+			is_valid = 0;
+		}
+	}
+
+	if (!is_valid) {
+		ast_log(LOG_ERROR, "Response validation failed for /asterisk/modules/{moduleName}\n");
+		ast_ari_response_error(response, 500,
+			"Internal Server Error", "Response validation failed");
+	}
+#endif /* AST_DEVMODE */
+
+fin: __attribute__((unused))
+	return;
+}
 int ast_ari_asterisk_get_global_var_parse_body(
 	struct ast_json *body,
 	struct ast_ari_asterisk_get_global_var_args *args)
@@ -409,6 +470,24 @@
 	.children = {  }
 };
 /*! \brief REST handler for /api-docs/asterisk.{format} */
+static struct stasis_rest_handlers asterisk_modules_moduleName = {
+	.path_segment = "moduleName",
+	.is_wildcard = 1,
+	.callbacks = {
+		[AST_HTTP_DELETE] = ast_ari_asterisk_unload_module_cb,
+	},
+	.num_children = 0,
+	.children = {  }
+};
+/*! \brief REST handler for /api-docs/asterisk.{format} */
+static struct stasis_rest_handlers asterisk_modules = {
+	.path_segment = "modules",
+	.callbacks = {
+	},
+	.num_children = 1,
+	.children = { &asterisk_modules_moduleName, }
+};
+/*! \brief REST handler for /api-docs/asterisk.{format} */
 static struct stasis_rest_handlers asterisk_variable = {
 	.path_segment = "variable",
 	.callbacks = {
@@ -423,8 +502,8 @@
 	.path_segment = "asterisk",
 	.callbacks = {
 	},
-	.num_children = 2,
-	.children = { &asterisk_info,&asterisk_variable, }
+	.num_children = 3,
+	.children = { &asterisk_info,&asterisk_modules,&asterisk_variable, }
 };
 
 static int load_module(void)
diff --git a/rest-api/api-docs/asterisk.json b/rest-api/api-docs/asterisk.json
index 263bfd6..c5f01cc 100644
--- a/rest-api/api-docs/asterisk.json
+++ b/rest-api/api-docs/asterisk.json
@@ -39,6 +39,42 @@
 			]
 		},
 		{
+			"path": "/asterisk/modules/{moduleName}",
+			"description": "Asterisk module",
+			"operations": [
+				{
+					"httpMethod": "DELETE",
+					"summary": "Unload an Asterisk module.",
+					"nickname": "unloadModule",
+					"responseClass": "void",
+					"parameters": [
+						{
+							"name": "moduleName",
+							"description": "Module's name",
+							"paramType": "path",
+							"required": true,
+							"allowMultiple": false,
+							"dataType": "string"
+						}
+					],
+					"errorResponses": [
+						{
+							"code": 400,
+							"reason": "Module name is required."
+						},
+						{
+							"code": 404,
+							"reason": "Module does not exist."
+						},
+						{
+							"code": 409,
+							"reason": "Module could not be unloaded."
+						}
+					]
+				}
+			]
+		},
+		{
 			"path": "/asterisk/variable",
 			"description": "Global variables",
 			"operations": [
@@ -244,6 +280,37 @@
 				}
 			}
 		},
+		"Module": {
+			"id": "Module",
+			"description": "Details of an Asterisk module",
+			"properties": {
+				"name": {
+					"type": "string",
+					"description": "The name of this module",
+					"required": true
+				},
+				"description": {
+					"type": "string",
+					"description": "The description of this module",
+					"required": true
+				},
+				"use_count": {
+					"type": "int",
+					"description": "The number of times this module is being used",
+					"required": true
+				},
+				"status": {
+					"type": "string",
+					"description": "The running status of this module",
+					"required": true
+				},
+				"support_level": {
+					"type": "string",
+					"description": "The support state of this module",
+					"required": true
+				}
+			}
+		},
 		"Variable": {
 			"id": "Variable",
 			"description": "The value of a channel variable",

-- 
To view, visit https://gerrit.asterisk.org/808
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Gerrit-MessageType: newchange
Gerrit-Change-Id: I535a95f5676deb02651522761ecbdc0b00b5ac57
Gerrit-PatchSet: 1
Gerrit-Project: asterisk
Gerrit-Branch: 13
Gerrit-Owner: Benjamin Keith Ford <bford at digium.com>



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