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[libvirt] [PATCH 10/10] util: storage: adapt to changes in JSON format for sheepdog



Since qemu 2.9 the options changed from a monolithic string into fine
grained options for the json pseudo-protocol object.
---
 src/util/virstoragefile.c | 28 ++++++++++++++++++++++++----
 tests/virstoragetest.c    | 11 +++++++++++
 2 files changed, 35 insertions(+), 4 deletions(-)

diff --git a/src/util/virstoragefile.c b/src/util/virstoragefile.c
index dc06bec94..629908b7a 100644
--- a/src/util/virstoragefile.c
+++ b/src/util/virstoragefile.c
@@ -3057,6 +3057,8 @@ virStorageSourceParseBackingJSONSheepdog(virStorageSourcePtr src,
                                          int opaque ATTRIBUTE_UNUSED)
 {
     const char *filename;
+    const char *vdi = virJSONValueObjectGetString(json, "vdi");
+    virJSONValuePtr server = virJSONValueObjectGetObject(json, "server");

     /* legacy URI based syntax passed via 'filename' option */
     if ((filename = virJSONValueObjectGetString(json, "filename"))) {
@@ -3065,13 +3067,31 @@ virStorageSourceParseBackingJSONSheepdog(virStorageSourcePtr src,
                                                           VIR_STORAGE_NET_PROTOCOL_SHEEPDOG);

         /* libvirt doesn't implement a parser for the legacy non-URI syntax */
+        virReportError(VIR_ERR_INVALID_ARG, "%s",
+                       _("missing sheepdog URI in JSON backing volume definition"));
+        return -1;
     }

-    /* Sheepdog currently supports only URI and legacy syntax passed in as filename */
-    virReportError(VIR_ERR_INVALID_ARG, "%s",
-                   _("missing sheepdog URI in JSON backing volume definition"));
+    src->type = VIR_STORAGE_TYPE_NETWORK;
+    src->protocol = VIR_STORAGE_NET_PROTOCOL_SHEEPDOG;

-    return -1;
+    if (!vdi) {
+        virReportError(VIR_ERR_INVALID_ARG, "%s", _("missing sheepdog vdi name"));
+        return -1;
+    }
+
+    if (VIR_STRDUP(src->path, vdi) < 0)
+        return -1;
+
+    if (VIR_ALLOC(src->hosts) < 0)
+        return -1;
+
+    src->nhosts = 1;
+
+    if (virStorageSourceParseBackingJSONSocketAddress(src->hosts, server) < 0)
+        return -1;
+
+    return 0;
 }


diff --git a/tests/virstoragetest.c b/tests/virstoragetest.c
index 7abd30c55..cbde02523 100644
--- a/tests/virstoragetest.c
+++ b/tests/virstoragetest.c
@@ -1553,6 +1553,17 @@ mymain(void)
                        "<source protocol='iscsi' name='iqn.2016-12.com.virttest:emulated-iscsi-noauth.target/6'>\n"
                        "  <host name='test.org'/>\n"
                        "</source>\n");
+    TEST_BACKING_PARSE("json:{\"file\":{\"driver\":\"sheepdog\","
+                                       "\"transport\":\"tcp\","
+                                       "\"vdi\":\"test\","
+                                       "\"server\":{ \"type\":\"tcp\","
+                                                    "\"host\":\"example.com\""
+                                                  "}"
+                                      "}"
+                            "}",
+                       "<source protocol='sheepdog' name='test'>\n"
+                       "  <host name='example.com'/>\n"
+                       "</source>\n");

  cleanup:
     /* Final cleanup */
-- 
2.12.2


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