fix(lsp.completion): add logging for request failures

lua/lsp/completion/init.lua

@@ -1,5 +1,6 @@
 local Item = require("lsp.completion.item")
 local Popup = require("lsp.completion.popup")
+local log = require("log")
 local session = require("lsp.completion.session")
 
 local GROUP = vim.api.nvim_create_augroup("ow.lsp.completion", { clear = true })
@@ -113,6 +114,7 @@ function M.setup()
                 return
             end
 
+            ---@param target ow.lsp.completion.Item
             local function apply(target)
                 local raw = target.raw
                 if raw.additionalTextEdits then
@@ -123,10 +125,22 @@ function M.setup()
                     )
                 end
                 if raw.command then
-                    client:request("workspace/executeCommand", {
+                    local method =
+                        vim.lsp.protocol.Methods.workspace_executeCommand
+                    client:request(method, {
                         command = raw.command.command,
                         arguments = raw.command.arguments,
-                    }, nil, ev.buf)
+                    }, function(err)
+                        if err then
+                            log.warning(
+                                "client %d: %s failed for %s: %s",
+                                client.id,
+                                method,
+                                raw.command.title,
+                                err.message
+                            )
+                        end
+                    end, ev.buf)
                 end
                 if target.snippet then
                     local word = completed.word or ""
@@ -157,18 +171,22 @@ function M.setup()
                 and not item.raw.additionalTextEdits
                 and not item.raw.command
             then
-                client:request(
-                    vim.lsp.protocol.Methods.completionItem_resolve,
-                    item.raw,
-                    function(err, resolved)
+                local method = vim.lsp.protocol.Methods.completionItem_resolve
+                client:request(method, item.raw, function(err, resolved)
+                    if err then
+                        log.warning(
+                            "client %d: %s failed: %s",
+                            client.id,
+                            method,
+                            err.message
+                        )
+                    end
                     if err or not resolved then
                         return
                     end
                     item:apply_resolved(resolved)
                     apply(item)
-                    end,
-                    ev.buf
-                )
+                end, ev.buf)
             else
                 apply(item)
             end

lua/lsp/completion/popup.lua

@@ -1,3 +1,4 @@
+local log = require("log")
 local MAX_WIDTH = 80
 local MAX_HEIGHT = 20
 local HALF_HEIGHT = math.floor(MAX_HEIGHT / 2)
@@ -114,10 +115,16 @@ end
 function Popup:dispatch_resolve(client, item, ft, pum, word, buf)
     self:cancel_pending()
     self.resolved = nil
-    local _, request_id = client:request(
-        vim.lsp.protocol.Methods.completionItem_resolve,
-        item.raw,
-        function(err, result)
+    local method = vim.lsp.protocol.Methods.completionItem_resolve
+    local _, request_id = client:request(method, item.raw, function(err, result)
+        if err then
+            log.warning(
+                "client %d: %s failed: %s",
+                client.id,
+                method,
+                err.message
+            )
+        end
         self.pending = nil
         if err or not result then
             return
@@ -129,9 +136,7 @@ function Popup:dispatch_resolve(client, item, ft, pum, word, buf)
         item:apply_resolved(result)
         self.resolved = { word = word, item = item }
         self:show(item, ft, pum)
-        end,
-        buf
-    )
+    end, buf)
     if request_id then
         self.pending = { client = client, id = request_id }
     end

lua/lsp/completion/session.lua

@@ -3,6 +3,7 @@
 
 local Item = require("lsp.completion.item")
 local kind = require("lsp.kind")
+local log = require("log")
 local util = require("util")
 
 local REQUEST_DEBOUNCE_MS = 50
@@ -198,11 +199,8 @@ function Session:dispatch(trigger_kind, trigger_char, manual)
         triggerKind = trigger_kind,
         triggerCharacter = trigger_char,
     }
-    self.cancel = vim.lsp.buf_request_all(
-        buf,
-        vim.lsp.protocol.Methods.textDocument_completion,
-        params,
-        function(result)
+    local method = vim.lsp.protocol.Methods.textDocument_completion
+    self.cancel = vim.lsp.buf_request_all(buf, method, params, function(result)
         if self.generation ~= gen then
             return
         end
@@ -224,7 +222,15 @@ function Session:dispatch(trigger_kind, trigger_char, manual)
                 return
             end
             self.is_incomplete = false
-                for _, response in pairs(result) do
+            for client_id, response in pairs(result) do
+                if response.err then
+                    log.warning(
+                        "client %d: %s failed: %s",
+                        client_id,
+                        method,
+                        response.err.message
+                    )
+                end
                 local r = response.result
                 if type(r) == "table" and r.isIncomplete then
                     self.is_incomplete = true
@@ -239,12 +245,10 @@ function Session:dispatch(trigger_kind, trigger_char, manual)
                     break
                 end
             end
-                local base =
-                    vim.api.nvim_get_current_line():sub(start + 1, cursor)
+            local base = vim.api.nvim_get_current_line():sub(start + 1, cursor)
             vim.fn.complete(start + 1, build_items(result, base))
         end)
-        end
-    )
+    end)
 end
 
 local session = Session.new()
@@ -284,7 +288,7 @@ function M.on_insert_char_pre()
     local kind_num = is_trigger
             and vim.lsp.protocol.CompletionTriggerKind.TriggerCharacter
         or vim.lsp.protocol.CompletionTriggerKind.Invoked
-    dispatcher:call(nil, kind_num, is_trigger and char or nil)
+    dispatcher(kind_num, is_trigger and char or nil)
 end
 
 return M