GlusterFS Hadoop specific DSL for mountbroker

Change-Id: Ie379992bdea0974c8c5e1a4d7bc3e87cefe0d256
BUG: 3539
Reviewed-on: http://review.gluster.com/404
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vijay@gluster.com>

4 files changed, 66 insertions, 12 deletions

diff --git a/libglusterfs/src/common-utils.h b/libglusterfs/src/common-utils.h
index 51d9d88a4..c7d784ca8 100644
--- a/libglusterfs/src/common-utils.h
+++ b/libglusterfs/src/common-utils.h
@@ -69,6 +69,7 @@ void trap (void);
 #define GF_UNIT_PB_STRING    "PB"
 
 #define GEOREP "geo-replication"
+#define GHADOOP "glusterfs-hadoop"
 
 enum _gf_boolean
 {
diff --git a/xlators/mgmt/glusterd/src/glusterd-mountbroker.c b/xlators/mgmt/glusterd/src/glusterd-mountbroker.c
index 03767ee6d..590a3f968 100644
--- a/xlators/mgmt/glusterd/src/glusterd-mountbroker.c
+++ b/xlators/mgmt/glusterd/src/glusterd-mountbroker.c
@@ -277,6 +277,17 @@ const char *georep_mnt_desc_template =
                 "log-level=* "
         ")";
 
+const char *hadoop_mnt_desc_template =
+        "SUP("
+                "volfile-server=%s "
+                "volfile-id=%s "
+                "user-map-root=%s "
+        ")"
+        "SUB+("
+                "log-file="DEFAULT_LOG_FILE_DIRECTORY"/"GHADOOP"*/* "
+                "log-level=* "
+        ")";
+
 int
 make_georep_mountspec (gf_mount_spec_t *mspec, const char *volname,
                        char *user)
@@ -292,6 +303,21 @@ make_georep_mountspec (gf_mount_spec_t *mspec, const char *volname,
         return parse_mount_pattern_desc (mspec, georep_mnt_desc);
 }
 
+int
+make_ghadoop_mountspec (gf_mount_spec_t *mspec, const char *volname,
+                        char *user, char *server)
+{
+        char *hadoop_mnt_desc = NULL;
+        int   ret             = 0;
+
+        ret = gf_asprintf (&hadoop_mnt_desc, hadoop_mnt_desc_template,
+                           server, volname, user);
+        if (ret == -1)
+                return ret;
+
+        return parse_mount_pattern_desc (mspec, hadoop_mnt_desc);
+}
+
 static gf_boolean_t
 match_comp (char *str, char *patcomp)
 {
diff --git a/xlators/mgmt/glusterd/src/glusterd-mountbroker.h b/xlators/mgmt/glusterd/src/glusterd-mountbroker.h
index e5b3d23ae..729cf3fbc 100644
--- a/xlators/mgmt/glusterd/src/glusterd-mountbroker.h
+++ b/xlators/mgmt/glusterd/src/glusterd-mountbroker.h
@@ -46,5 +46,7 @@ int parse_mount_pattern_desc (gf_mount_spec_t *mspec, char *pdesc);
 
 int make_georep_mountspec (gf_mount_spec_t *mspec, const char *volname,
                            char *user);
+int make_ghadoop_mountspec (gf_mount_spec_t *mspec, const char *volname,
+                            char *user, char *server);
 
 int glusterd_do_mount (char *label, dict_t *argdict, char **path, int *op_errno);
diff --git a/xlators/mgmt/glusterd/src/glusterd.c b/xlators/mgmt/glusterd/src/glusterd.c
index d85777b1b..69923256c 100644
--- a/xlators/mgmt/glusterd/src/glusterd.c
+++ b/xlators/mgmt/glusterd/src/glusterd.c
@@ -664,23 +664,32 @@ check_prepare_mountbroker_root (char *mountbroker_root)
 static void
 _install_mount_spec (dict_t *opts, char *key, data_t *value, void *data)
 {
-        glusterd_conf_t *priv  = THIS->private;
-        char *label            = NULL;
-        gf_boolean_t georep    = _gf_false;
-        char *pdesc            = value->data;
-        char *volname          = NULL;
-        int *ret               = data;
-        int rv                 = 0;
-        gf_mount_spec_t *mspec = NULL;
-        char *user             = NULL;
+        glusterd_conf_t *priv           = THIS->private;
+        char            *label          = NULL;
+        gf_boolean_t     georep         = _gf_false;
+        gf_boolean_t     ghadoop        = _gf_false;
+        char            *pdesc          = value->data;
+        char            *volname        = NULL;
+        int             *ret            = data;
+        int              rv             = 0;
+        gf_mount_spec_t *mspec          = NULL;
+        char            *user           = NULL;
+        char            *volfile_server = NULL;
 
         if (*ret == -1)
                 return;
 
         label = strtail (key, "mountbroker.");
+
+        /* check for presence of geo-rep/hadoop label */
         if (!label) {
-                georep = _gf_true;
                 label = strtail (key, "mountbroker-"GEOREP".");
+                if (label)
+                        georep = _gf_true;
+
+                label = strtail (key, "mountbroker-"GHADOOP".");
+                if (label)
+                        ghadoop = _gf_true;
         }
 
         if (!label)
@@ -691,7 +700,7 @@ _install_mount_spec (dict_t *opts, char *key, data_t *value, void *data)
                 goto err;
         mspec->label = label;
 
-        if (georep) {
+        if (georep || ghadoop) {
                 volname = gf_strdup (pdesc);
                 if (!volname)
                         goto err;
@@ -701,7 +710,20 @@ _install_mount_spec (dict_t *opts, char *key, data_t *value, void *data)
                         user++;
                 } else
                         user = label;
-                rv = make_georep_mountspec (mspec, volname, user);
+
+                if (georep)
+                        rv = make_georep_mountspec (mspec, volname, user);
+
+                if (ghadoop) {
+                        volfile_server = strchr (user, ':');
+                        if (volfile_server)
+                                *volfile_server++ = '\0';
+                        else
+                                volfile_server = "localhost";
+
+                        rv = make_ghadoop_mountspec (mspec, volname, user, volfile_server);
+                }
+
                 GF_FREE (volname);
                 if (rv != 0)
                         goto err;
@@ -1073,6 +1095,9 @@ struct volume_options options[] = {
         { .key  = {"mountbroker-"GEOREP".*"},
           .type = GF_OPTION_TYPE_ANY,
         },
+        { .key  = {"mountbroker-"GHADOOP".*"},
+          .type = GF_OPTION_TYPE_ANY,
+        },
         { .key = {GEOREP"-log-group"},
           .type = GF_OPTION_TYPE_ANY,
         },