Add get_uris and extend get_servers

CHANGELOG.rst

@@ -20,6 +20,10 @@ Added
 
 - new issue when ``box.info.election.leader_idle`` is too high.
 
+- Lua API ``get_uris`` to get all instances uris.
+
+- Filter param to Lua API ``get_servers`` to filter instances.
+
 -------------------------------------------------------------------------------
 [2.8.4] - 2023-10-31
 -------------------------------------------------------------------------------

cartridge.lua

@@ -1010,6 +1010,11 @@ return {
     -- @function admin_get_replicasets
     admin_get_replicasets = lua_api_topology.get_replicasets,
 
+    --- .
+    -- @refer cartridge.lua-api.get-topology.get_uris
+    -- @function admin_get_uris
+    admin_get_uris = lua_api_topology.get_uris,
+
     --- .
     -- @refer cartridge.lua-api.topology.probe_server
     -- @function admin_probe_server

cartridge/admin.lua

@@ -23,6 +23,7 @@ return {
     get_servers = lua_api_topology.get_servers,
     get_replicasets = lua_api_topology.get_replicasets,
     get_topology = lua_api_topology.get_topology,
+    get_uris = lua_api_topology.get_uris,
 
     edit_topology = lua_api_topology.edit_topology,
     probe_server = lua_api_topology.probe_server,

cartridge/lua-api/get-topology.lua

@@ -253,7 +253,15 @@ local function get_topology()
     }
 end
 
-local function get_servers()
+
+--- Get servers list.
+-- @function get_servers
+-- @local
+-- @tparam ?function filter
+--   function(x: ServerInfo) -> boolean
+-- @return table {ServerInfo, ...}
+local function get_servers(filter)
+    filter = filter or function() return true end
     local servers = {}
     local topology, err = get_topology()
     if topology == nil then
@@ -265,11 +273,25 @@ local function get_servers()
             server.replicaset_uuid = server.replicaset.uuid
         end
         server.replicaset = nil
-        table.insert(servers, server)
+        if filter(server) then
+            table.insert(servers, server)
+        end
     end
     return servers
 end
 
+--- Get servers uri list.
+-- @function get_uris
+-- @local
+-- @tparam ?function filter
+--   function(x: ServerInfo) -> boolean
+-- @return table {uri1, uri2, ...}
+local function get_uris(filter)
+    return fun.iter(get_servers(filter)):map(function(server)
+        return server.uri
+    end):totable()
+end
+
 local function get_replicasets()
     local replicasets = {}
     local topology, err = get_topology()
@@ -314,4 +336,5 @@ return {
     get_servers = get_servers,
     get_replicasets = get_replicasets,
     get_enabled_roles_without_deps = get_enabled_roles_without_deps,
+    get_uris = get_uris,
 }

cartridge/lua-api/topology.lua

@@ -249,6 +249,7 @@ return {
     get_servers = get_servers,
     get_replicasets = get_replicasets,
     get_topology = lua_api_get_topology.get_topology,
+    get_uris = lua_api_get_topology.get_uris,
 
     edit_topology = lua_api_edit_topology.edit_topology,
     probe_server = probe_server,