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[taler-merchant] 26/277: implement GET /products
From: |
gnunet |
Subject: |
[taler-merchant] 26/277: implement GET /products |
Date: |
Sun, 05 Jul 2020 20:48:59 +0200 |
This is an automated email from the git hooks/post-receive script.
grothoff pushed a commit to branch master
in repository merchant.
commit f21f5ebd6f1870b03c1d9fc9a46dc152b3012563
Author: Christian Grothoff <christian@grothoff.org>
AuthorDate: Tue Apr 21 19:05:44 2020 +0200
implement GET /products
---
src/include/taler_merchant_service.h | 1 +
src/lib/Makefile.am | 1 +
src/lib/merchant_api_get_products.c | 280 +++++++++++++++++++++++++++++++++++
3 files changed, 282 insertions(+)
diff --git a/src/include/taler_merchant_service.h
b/src/include/taler_merchant_service.h
index c34be1d..8ac5b67 100644
--- a/src/include/taler_merchant_service.h
+++ b/src/include/taler_merchant_service.h
@@ -1085,6 +1085,7 @@ TALER_MERCHANT_product_delete (
struct GNUNET_CURL_Context *ctx,
const char *backend_url,
const char *instance_id,
+ const char *product_id,
TALER_MERCHANT_ProductDeleteCallback cb,
void *cb_cls);
diff --git a/src/lib/Makefile.am b/src/lib/Makefile.am
index 3199dd3..b92733f 100644
--- a/src/lib/Makefile.am
+++ b/src/lib/Makefile.am
@@ -24,6 +24,7 @@ libtalermerchant_la_SOURCES = \
merchant_api_get_config.c \
merchant_api_get_instance.c \
merchant_api_get_instances.c \
+ merchant_api_get_products.c \
merchant_api_patch_instance.c \
merchant_api_post_instances.c \
merchant_api_check_payment.c \
diff --git a/src/lib/merchant_api_get_products.c
b/src/lib/merchant_api_get_products.c
new file mode 100644
index 0000000..3c7eae5
--- /dev/null
+++ b/src/lib/merchant_api_get_products.c
@@ -0,0 +1,280 @@
+/*
+ This file is part of TALER
+ Copyright (C) 2014-2018, 2020 Taler Systems SA
+
+ TALER is free software; you can redistribute it and/or modify it under the
+ terms of the GNU Lesser General Public License as published by the Free
Software
+ Foundation; either version 2.1, or (at your option) any later version.
+
+ TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
details.
+
+ You should have received a copy of the GNU Lesser General Public License
along with
+ TALER; see the file COPYING.LGPL. If not, see
+ <http://www.gnu.org/licenses/>
+*/
+/**
+ * @file lib/merchant_api_get_products.c
+ * @brief Implementation of the GET /products request of the merchant's HTTP
API
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include <curl/curl.h>
+#include <jansson.h>
+#include <microhttpd.h> /* just for HTTP status codes */
+#include <gnunet/gnunet_util_lib.h>
+#include <gnunet/gnunet_curl_lib.h>
+#include "taler_merchant_service.h"
+#include <taler/taler_json_lib.h>
+#include <taler/taler_signatures.h>
+
+
+/**
+ * Handle for a GET /products operation.
+ */
+struct TALER_MERCHANT_ProductsGetHandle
+{
+ /**
+ * The url for this request.
+ */
+ char *url;
+
+ /**
+ * Handle for the request.
+ */
+ struct GNUNET_CURL_Job *job;
+
+ /**
+ * Function to call with the result.
+ */
+ TALER_MERCHANT_ProductsGetCallback cb;
+
+ /**
+ * Closure for @a cb.
+ */
+ void *cb_cls;
+
+ /**
+ * Reference to the execution context.
+ */
+ struct GNUNET_CURL_Context *ctx;
+
+};
+
+
+/**
+ * Parse product information from @a ia.
+ *
+ * @param ia JSON array (or NULL!) with product data
+ * @param pgh operation handle
+ * @return #GNUNET_OK on success
+ */
+static int
+parse_products (const json_t *ia,
+ struct TALER_MERCHANT_ProductsGetHandle *pgh)
+{
+ unsigned int ies_len = json_array_size (ia);
+ struct TALER_MERCHANT_InventoryEntry ies[ies_len];
+ size_t index;
+ json_t *value;
+ int ret;
+
+ ret = GNUNET_OK;
+ json_array_foreach (ia, index, value) {
+ struct TALER_MERCHANT_InventoryEntry *ie = &ies[index];
+ struct GNUNET_JSON_Specification spec[] = {
+ GNUNET_JSON_spec_string ("product_id",
+ &ie->product_id),
+ GNUNET_JSON_spec_end ()
+ };
+
+ if (GNUNET_OK !=
+ GNUNET_JSON_parse (value,
+ spec,
+ NULL, NULL))
+ {
+ GNUNET_break_op (0);
+ ret = GNUNET_SYSERR;
+ continue;
+ }
+ if (GNUNET_SYSERR == ret)
+ break;
+ }
+ if (GNUNET_OK == ret)
+ {
+ struct TALER_MERCHANT_HttpResponse hr = {
+ .http_status = MHD_HTTP_OK
+ };
+
+ pgh->cb (pgh->cb_cls,
+ &hr,
+ ies_len,
+ ies);
+ pgh->cb = NULL; /* just to be sure */
+ }
+ return ret;
+}
+
+
+/**
+ * Function called when we're done processing the
+ * HTTP /products request.
+ *
+ * @param cls the `struct TALER_MERCHANT_ProductsGetHandle`
+ * @param response_code HTTP response code, 0 on error
+ * @param json response body, NULL if not in JSON
+ */
+static void
+handle_get_products_finished (void *cls,
+ long response_code,
+ const void *response)
+{
+ struct TALER_MERCHANT_ProductsGetHandle *pgh = cls;
+ const json_t *json = response;
+ struct TALER_MERCHANT_HttpResponse hr = {
+ .http_status = (unsigned int) response_code,
+ .reply = json
+ };
+
+ pgh->job = NULL;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Got /products response with status code %u\n",
+ (unsigned int) response_code);
+ switch (response_code)
+ {
+ case MHD_HTTP_OK:
+ {
+ json_t *products;
+ struct GNUNET_JSON_Specification spec[] = {
+ GNUNET_JSON_spec_json ("products",
+ &products),
+ GNUNET_JSON_spec_end ()
+ };
+
+ if (GNUNET_OK !=
+ GNUNET_JSON_parse (json,
+ spec,
+ NULL, NULL))
+ {
+ hr.http_status = 0;
+ hr.ec = TALER_EC_INVALID_RESPONSE;
+ }
+ else
+ {
+ if ( (! json_is_array (products)) ||
+ (GNUNET_OK ==
+ parse_products (products,
+ pgh)) )
+ {
+ GNUNET_JSON_parse_free (spec);
+ TALER_MERCHANT_products_get_cancel (pgh);
+ return;
+ }
+ else
+ {
+ hr.http_status = 0;
+ hr.ec = TALER_EC_INVALID_RESPONSE;
+ }
+ }
+ GNUNET_JSON_parse_free (spec);
+ break;
+ }
+ default:
+ /* unexpected response code */
+ hr.ec = TALER_JSON_get_error_code (json);
+ hr.hint = TALER_JSON_get_error_hint (json);
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Unexpected response code %u/%d\n",
+ (unsigned int) response_code,
+ (int) hr.ec);
+ break;
+ }
+ pgh->cb (pgh->cb_cls,
+ &hr,
+ 0,
+ NULL);
+ TALER_MERCHANT_products_get_cancel (pgh);
+}
+
+
+/**
+ * Make a GET /products request.
+ *
+ * @param ctx the context
+ * @param backend_url HTTP base URL for the backend
+ * @param instance_id instance to query about its products,
+ * NULL to query the default instance
+ * @param cb function to call with the backend's inventory information
+ * @param cb_cls closure for @a cb
+ * @return the request handle; NULL upon error
+ */
+struct TALER_MERCHANT_ProductsGetHandle *
+TALER_MERCHANT_products_get (
+ struct GNUNET_CURL_Context *ctx,
+ const char *backend_url,
+ const char *instance_id,
+ TALER_MERCHANT_ProductsGetCallback cb,
+ void *cb_cls)
+{
+ struct TALER_MERCHANT_ProductsGetHandle *pgh;
+ CURL *eh;
+
+ pgh = GNUNET_new (struct TALER_MERCHANT_ProductsGetHandle);
+ pgh->ctx = ctx;
+ pgh->cb = cb;
+ pgh->cb_cls = cb_cls;
+ {
+ char *path;
+
+ if (NULL == instance_id)
+ GNUNET_asprintf (&path,
+ "products");
+ else
+ GNUNET_asprintf (&path,
+ "instances/%s/products",
+ instance_id);
+ pgh->url = TALER_url_join (backend_url,
+ path,
+ NULL);
+ GNUNET_free (path);
+ }
+ if (NULL == pgh->url)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Could not construct request URL.\n");
+ GNUNET_free (pgh);
+ return NULL;
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Requesting URL '%s'\n",
+ pgh->url);
+ eh = curl_easy_init ();
+ GNUNET_assert (CURLE_OK ==
+ curl_easy_setopt (eh,
+ CURLOPT_URL,
+ pgh->url));
+ pgh->job = GNUNET_CURL_job_add (ctx,
+ eh,
+ GNUNET_YES,
+ &handle_get_products_finished,
+ pgh);
+ return pgh;
+}
+
+
+/**
+ * Cancel /products request. Must not be called by clients after
+ * the callback was invoked.
+ *
+ * @param pgh request to cancel.
+ */
+void
+TALER_MERCHANT_products_get_cancel (
+ struct TALER_MERCHANT_ProductsGetHandle *pgh)
+{
+ if (NULL != pgh->job)
+ GNUNET_CURL_job_cancel (pgh->job);
+ GNUNET_free (pgh->url);
+ GNUNET_free (pgh);
+}
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- [taler-merchant] 08/277: support PATCH as well, (continued)
- [taler-merchant] 08/277: support PATCH as well, gnunet, 2020/07/05
- [taler-merchant] 12/277: start on DELETE instance, gnunet, 2020/07/05
- [taler-merchant] 10/277: implement POST /instances, gnunet, 2020/07/05
- [taler-merchant] 14/277: implement PATCH, gnunet, 2020/07/05
- [taler-merchant] 13/277: implement DELETE /instances/$ID, gnunet, 2020/07/05
- [taler-merchant] 18/277: implement POST products/lock, gnunet, 2020/07/05
- [taler-merchant] 15/277: implement GET /products, gnunet, 2020/07/05
- [taler-merchant] 17/277: implement PATCH handlers, gnunet, 2020/07/05
- [taler-merchant] 19/277: backenddb implementation work, gnunet, 2020/07/05
- [taler-merchant] 23/277: specify remaining /instance API, gnunet, 2020/07/05
- [taler-merchant] 26/277: implement GET /products,
gnunet <=
- [taler-merchant] 30/277: implement POST /products//lock, gnunet, 2020/07/05
- [taler-merchant] 21/277: simplifying SQL, gnunet, 2020/07/05
- [taler-merchant] 16/277: work on delete/get products by ID, gnunet, 2020/07/05
- [taler-merchant] 20/277: squealing, gnunet, 2020/07/05
- [taler-merchant] 25/277: finish patch, gnunet, 2020/07/05
- [taler-merchant] 24/277: implement POST /instances, gnunet, 2020/07/05
- [taler-merchant] 29/277: implement POST /products, gnunet, 2020/07/05
- [taler-merchant] 28/277: implement PATCH /products/, gnunet, 2020/07/05
- [taler-merchant] 22/277: work on /products and /instances C API, gnunet, 2020/07/05
- [taler-merchant] 31/277: implemenet DELETE /products/, gnunet, 2020/07/05