[Minor] Add config schema

diff --git a/src/plugins/lua/contextal.lua b/src/plugins/lua/contextal.lua
index 8f152828f8c7dffa34f9a1f645382e9fc573847d..5cebff238fcab78fbc7e29c198bd3feb1d3d354c 100644 (file)
--- a/src/plugins/lua/contextal.lua
+++ b/src/plugins/lua/contextal.lua
@@ -32,6 +32,7 @@ local redis_cache = require "lua_cache"
 local rspamd_http = require "rspamd_http"
 local rspamd_logger = require "rspamd_logger"
 local rspamd_util = require "rspamd_util"
+local ts = require("tableshape").types
 local ucl = require "ucl"
 
 local cache_context, redis_params
@@ -44,6 +45,21 @@ local contextal_actions = {
   'SPAM',
 }
 
+local config_schema = lua_redis.enrich_schema {
+  action_symbol_prefix = ts.string:is_optional(),
+  base_url = ts.string:is_optional(),
+  cache_prefix = ts.string:is_optional(),
+  cache_timeout = ts.number:is_optional(),
+  cache_ttl = ts.number:is_optional(),
+  custom_actions = ts.array_of(ts.string):is_optional(),
+  defer_if_no_result = ts.boolean:is_optional(),
+  defer_message = ts.string:is_optional(),
+  enabled = ts.boolean:is_optional(),
+  http_timeout = ts.number:is_optional(),
+  request_ttl = ts.number:is_optional(),
+  submission_symbol = ts.string:is_optional(),
+}
+
 local settings = {
   action_symbol_prefix = 'CONTEXTAL_ACTION',
   base_url = 'http://localhost:8080',
@@ -232,12 +248,21 @@ local function action_cb(task)
 end
 
 local function set_url_path(base, path)
-  local ts = base:sub(#base) == '/' and '' or '/'
-  return base .. ts .. path
+  local slash = base:sub(#base) == '/' and '' or '/'
+  return base .. slash .. path
 end
 
 settings = lua_util.override_defaults(settings, opts)
 
+local res, err = config_schema:transform(settings)
+if not res then
+  rspamd_logger.warnx(rspamd_config, 'plugin %s is misconfigured: %s', N, err)
+  local err_msg = string.format("schema error: %s", res)
+  lua_util.config_utils.push_config_error(N, err_msg)
+  lua_util.disable_module(N, "failed", err_msg)
+  return
+end
+
 contextal_actions = lua_util.list_to_hash(contextal_actions)
 for _, k in ipairs(settings.custom_actions) do
   contextal_actions[k] = true