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From 825c7ad1ab9be3abcd1935491d11d0590e3b3462 Mon Sep 17 00:00:00 2001
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Message-Id: <825c7ad1ab9be3abcd1935491d11d0590e3b3462@dist-git>
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From: Peter Krempa <pkrempa@redhat.com>
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Date: Tue, 20 Jun 2017 10:22:43 +0200
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Subject: [PATCH] util: storage: adapt to changes in JSON format for ceph/rbd
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Since qemu 2.9 the options changed from a monolithic string into fine
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grained options for the json pseudo-protocol object.
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(cherry picked from commit 4fac5a1935041254964313ed722fa8d59f8fa2de)
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https://bugzilla.redhat.com/show_bug.cgi?id=1461638
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Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
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Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
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---
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 src/util/virstoragefile.c | 50 +++++++++++++++++++++++++++++++++++++++++++----
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 tests/virstoragetest.c    | 19 ++++++++++++++++++
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 2 files changed, 65 insertions(+), 4 deletions(-)
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diff --git a/src/util/virstoragefile.c b/src/util/virstoragefile.c
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index ef3050711b..68bfdcd0ca 100644
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--- a/src/util/virstoragefile.c
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+++ b/src/util/virstoragefile.c
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@@ -3127,6 +3127,15 @@ virStorageSourceParseBackingJSONRBD(virStorageSourcePtr src,
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                                     int opaque ATTRIBUTE_UNUSED)
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 {
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     const char *filename;
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+    const char *pool = virJSONValueObjectGetString(json, "pool");
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+    const char *image = virJSONValueObjectGetString(json, "image");
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+    const char *conf = virJSONValueObjectGetString(json, "conf");
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+    const char *snapshot = virJSONValueObjectGetString(json, "snapshot");
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+    virJSONValuePtr servers = virJSONValueObjectGetArray(json, "server");
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+    char *fullname = NULL;
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+    size_t nservers;
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+    size_t i;
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+    int ret = -1;
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     src->type = VIR_STORAGE_TYPE_NETWORK;
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     src->protocol = VIR_STORAGE_NET_PROTOCOL_RBD;
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@@ -3135,11 +3144,44 @@ virStorageSourceParseBackingJSONRBD(virStorageSourcePtr src,
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     if ((filename = virJSONValueObjectGetString(json, "filename")))
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         return virStorageSourceParseRBDColonString(filename, src);
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-    /* RBD currently supports only URI syntax passed in as filename */
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-    virReportError(VIR_ERR_INVALID_ARG, "%s",
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-                   _("missing RBD filename in JSON backing volume definition"));
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+    if (!pool || !image) {
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+        virReportError(VIR_ERR_INVALID_ARG, "%s",
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+                       _("missing pool or image name in ceph backing volume "
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+                         "JSON specification"));
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+        return -1;
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+    }
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-    return -1;
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+    /* currently we need to store the pool name and image name together, since
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+     * the rest of the code is not prepared for it */
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+    if (virAsprintf(&fullname, "%s/%s", pool, image) < 0)
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+        return -1;
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+
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+    if (VIR_STRDUP(src->snapshot, snapshot) < 0 ||
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+        VIR_STRDUP(src->configFile, conf) < 0)
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+        goto cleanup;
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+
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+    VIR_STEAL_PTR(src->path, fullname);
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+
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+    if (servers) {
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+        nservers = virJSONValueArraySize(servers);
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+
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+        if (VIR_ALLOC_N(src->hosts, nservers) < 0)
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+            goto cleanup;
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+
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+        src->nhosts = nservers;
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+
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+        for (i = 0; i < nservers; i++) {
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+            if (virStorageSourceParseBackingJSONInetSocketAddress(src->hosts + i,
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+                                                                  virJSONValueArrayGet(servers, i)) < 0)
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+                goto cleanup;
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+        }
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+    }
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+
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+    ret = 0;
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+ cleanup:
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+    VIR_FREE(fullname);
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+
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+    return ret;
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 }
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 static int
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diff --git a/tests/virstoragetest.c b/tests/virstoragetest.c
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index 54f7c849c5..97eaeab094 100644
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--- a/tests/virstoragetest.c
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+++ b/tests/virstoragetest.c
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@@ -1507,6 +1507,25 @@ mymain(void)
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                        "<source protocol='rbd' name='testshare'>\n"
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                        "  <host name='example.com'/>\n"
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                        "</source>\n");
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+    TEST_BACKING_PARSE("json:{\"file\":{\"driver\":\"rbd\","
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+                                       "\"image\":\"test\","
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+                                       "\"pool\":\"libvirt\","
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+                                       "\"conf\":\"/path/to/conf\","
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+                                       "\"snapshot\":\"snapshotname\","
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+                                       "\"server\":[ {\"host\":\"example.com\","
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+                                                      "\"port\":\"1234\""
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+                                                    "},"
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+                                                    "{\"host\":\"example2.com\""
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+                                                    "}"
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+                                                  "]"
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+                                      "}"
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+                             "}",
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+                        "<source protocol='rbd' name='libvirt/test'>\n"
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+                        "  <host name='example.com' port='1234'/>\n"
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+                        "  <host name='example2.com'/>\n"
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+                        "  <snapshot name='snapshotname'/>\n"
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+                        "  <config file='/path/to/conf'/>\n"
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+                        "</source>\n");
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     TEST_BACKING_PARSE("json:{ \"file\": { "
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                                 "\"driver\": \"raw\","
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                                 "\"file\": {"
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-- 
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2.13.1
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