/
server.clj
639 lines (555 loc) · 25.7 KB
/
server.clj
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(ns clojure-lsp.server
(:require
[clojure-lsp.clojure-coercer :as clojure-coercer]
[clojure-lsp.db :as db]
[clojure-lsp.feature.command :as f.command]
[clojure-lsp.feature.file-management :as f.file-management]
[clojure-lsp.feature.semantic-tokens :as semantic-tokens]
[clojure-lsp.feature.test-tree :as f.test-tree]
[clojure-lsp.handlers :as handler]
[clojure-lsp.logger :as logger]
[clojure-lsp.nrepl :as nrepl]
[clojure-lsp.producer :as producer]
[clojure-lsp.settings :as settings]
[clojure-lsp.shared :as shared]
[clojure.core.async :as async]
[lsp4clj.coercer :as coercer]
[lsp4clj.io-server :as lsp.io-server]
[lsp4clj.liveness-probe :as lsp.liveness-probe]
[lsp4clj.lsp.requests :as lsp.requests]
[lsp4clj.server :as lsp.server]
[medley.core :as medley]
[promesa.core :as p]
[promesa.exec :as p.exec]
[taoensso.timbre :as timbre]))
(set! *warn-on-reflection* true)
(defmacro eventually [& body]
`(p/thread ~@body))
(def ^:private changes-executor (memoize p.exec/forkjoin-executor))
(defmacro after-changes [& body]
`(p/thread-call (changes-executor) (^:once fn* [] ~@body)))
(def diagnostics-debounce-ms 25)
(def change-debounce-ms 50)
(def watched-files-debounce-ms 1000)
(def known-files-pattern "**/*.{clj,cljs,cljc,cljd,edn,bb,clj_kondo}")
(def normalize-uri shared/normalize-uri-from-client)
(defn normalize-doc-uri [params]
(medley/update-existing-in params [:text-document :uri] normalize-uri))
(defn log! [level args fmeta]
(timbre/log! level :p args {:?line (:line fmeta)
:?file (:file fmeta)
:?ns-str (:ns-str fmeta)}))
(defn log-wrapper-fn
[level & args]
;; NOTE: this does not do compile-time elision because the level isn't a constant.
;; We don't really care because we always log all levels.
(timbre/log! level :p args))
(defmacro conform-or-log
"Provides log function for conformation, while preserving line numbers."
[spec value]
(let [fmeta (assoc (meta &form)
:file *file*
:ns-str (str *ns*))]
`(coercer/conform-or-log
(fn [& args#]
(log! :error args# ~fmeta))
~spec
~value)))
(defrecord TimbreLogger []
logger/ILogger
(setup [this]
(let [log-path (str (java.io.File/createTempFile "clojure-lsp." ".out"))]
(timbre/merge-config! {:middleware [#(assoc % :hostname_ "")]
:appenders {:println {:enabled? false}
:spit (timbre/spit-appender {:fname log-path})}})
(timbre/handle-uncaught-jvm-exceptions!)
(logger/set-logger! this)
log-path))
(set-log-path [_this log-path]
(timbre/merge-config! {:appenders {:spit (timbre/spit-appender {:fname log-path})}}))
(-info [_this fmeta arg1] (log! :info [arg1] fmeta))
(-info [_this fmeta arg1 arg2] (log! :info [arg1 arg2] fmeta))
(-info [_this fmeta arg1 arg2 arg3] (log! :info [arg1 arg2 arg3] fmeta))
(-warn [_this fmeta arg1] (log! :warn [arg1] fmeta))
(-warn [_this fmeta arg1 arg2] (log! :warn [arg1 arg2] fmeta))
(-warn [_this fmeta arg1 arg2 arg3] (log! :warn [arg1 arg2 arg3] fmeta))
(-error [_this fmeta arg1] (log! :error [arg1] fmeta))
(-error [_this fmeta arg1 arg2] (log! :error [arg1 arg2] fmeta))
(-error [_this fmeta arg1 arg2 arg3] (log! :error [arg1 arg2 arg3] fmeta))
(-debug [_this fmeta arg1] (log! :debug [arg1] fmeta))
(-debug [_this fmeta arg1 arg2] (log! :debug [arg1 arg2] fmeta))
(-debug [_this fmeta arg1 arg2 arg3] (log! :debug [arg1 arg2 arg3] fmeta)))
(defrecord ^:private ClojureLspProducer
[server db*]
producer/IProducer
(publish-diagnostic [_this diagnostic]
(lsp.server/discarding-stdout
(shared/logging-task
:publish-diagnostics
(->> diagnostic
(conform-or-log ::coercer/publish-diagnostics-params)
(lsp.server/send-notification server "textDocument/publishDiagnostics")))))
(refresh-code-lens [_this]
(lsp.server/discarding-stdout
(when (get-in @db* [:client-capabilities :workspace :code-lens :refresh-support])
(lsp.server/send-request server "workspace/codeLens/refresh" nil))))
(publish-workspace-edit [_this edit]
(lsp.server/discarding-stdout
(let [request (->> {:edit edit}
(conform-or-log ::coercer/workspace-edit-params)
(lsp.server/send-request server "workspace/applyEdit"))
response (lsp.server/deref-or-cancel request 10e3 ::timeout)]
(if (= ::timeout response)
(logger/error "No reponse from client after 10 seconds while applying workspace-edit.")
response))))
(show-document-request [_this document-request]
(lsp.server/discarding-stdout
(when (get-in @db* [:client-capabilities :window :show-document])
(logger/info "Requesting to show on editor the document" document-request)
(->> document-request
(conform-or-log ::coercer/show-document-request)
(lsp.server/send-request server "window/showDocument")))))
(publish-progress [_this percentage message progress-token]
(lsp.server/discarding-stdout
;; ::coercer/notify-progress
(->> (lsp.requests/work-done-progress percentage message progress-token)
(lsp.server/send-notification server "$/progress"))))
(show-message-request [_this message type actions]
(lsp.server/discarding-stdout
(let [request (->> {:type type
:message message
:actions actions}
(conform-or-log ::coercer/show-message-request)
(lsp.server/send-request server "window/showMessageRequest"))
;; High timeout as we probably want to wait some time for user input
response (lsp.server/deref-or-cancel request 10e5 ::timeout)]
(when-not (= response ::timeout)
(:title response)))))
(show-message [_this message type extra]
(lsp.server/discarding-stdout
(let [message-content {:message message
:type type
:extra extra}]
(logger/info message-content)
(->> message-content
(conform-or-log ::coercer/show-message)
(lsp.server/send-notification server "window/showMessage")))))
(refresh-test-tree [_this uris]
(async/thread
(lsp.server/discarding-stdout
(let [db @db*]
(when (some-> db :client-capabilities :experimental :test-tree)
(shared/logging-task
:refreshing-test-tree
(doseq [uri uris]
(some->> (f.test-tree/tree uri db)
(conform-or-log ::clojure-coercer/publish-test-tree-params)
(lsp.server/send-notification server "clojure/textDocument/testTree"))))))))))
;;;; clojure extra features
(defmethod lsp.server/receive-request "clojure/dependencyContents" [_ components params]
(->> (medley/update-existing params :uri normalize-uri)
(handler/dependency-contents components)
(conform-or-log ::coercer/uri)
eventually))
(defmethod lsp.server/receive-request "clojure/serverInfo/raw" [_ components _params]
(->> components
handler/server-info-raw
eventually))
(defmethod lsp.server/receive-notification "clojure/serverInfo/log" [_ components _params]
(future
(try
(handler/server-info-log components)
(catch Throwable e
(logger/error e)
(throw e)))))
(defmethod lsp.server/receive-request "clojure/cursorInfo/raw" [_ components params]
(->> params
normalize-doc-uri
(handler/cursor-info-raw components)
eventually))
(defmethod lsp.server/receive-notification "clojure/cursorInfo/log" [_ components params]
(future
(try
(handler/cursor-info-log components (normalize-doc-uri params))
(catch Throwable e
(logger/error e)
(throw e)))))
(defmethod lsp.server/receive-request "clojure/clojuredocs/raw" [_ components params]
(->> params
(handler/clojuredocs-raw components)
eventually))
(defmethod lsp.server/receive-request "clojure/workspace/projectTree/nodes" [_ components params]
(->> params
(conform-or-log ::clojure-coercer/project-tree-params)
(handler/project-tree-nodes components)
(conform-or-log ::clojure-coercer/project-tree-response)
eventually))
;;;; Document sync features
;; https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#textDocument_synchronization
(defmethod lsp.server/receive-notification "textDocument/didOpen" [_ components params]
(handler/did-open components (normalize-doc-uri params)))
(defmethod lsp.server/receive-notification "textDocument/didChange" [_ components params]
(handler/did-change components (normalize-doc-uri params)))
(defmethod lsp.server/receive-notification "textDocument/didSave" [_ components params]
(future
(try
(handler/did-save components (normalize-doc-uri params))
(catch Throwable e
(logger/error e)
(throw e)))))
(defmethod lsp.server/receive-notification "textDocument/didClose" [_ components params]
(handler/did-close components (normalize-doc-uri params)))
(defmethod lsp.server/receive-request "textDocument/references" [_ components params]
(->> params
normalize-doc-uri
(handler/references components)
(conform-or-log ::coercer/locations-or-error)
eventually))
(defmethod lsp.server/receive-request "textDocument/completion" [_ components params]
(->> params
normalize-doc-uri
(handler/completion components)
(conform-or-log ::coercer/completion-items-or-error)
eventually))
(defmethod lsp.server/receive-request "completionItem/resolve" [_ components item]
(->> item
(conform-or-log ::coercer/input.completion-item)
(handler/completion-resolve-item components)
(conform-or-log ::coercer/completion-item-or-error)
eventually))
(defmethod lsp.server/receive-request "textDocument/prepareRename" [_ components params]
(->> params
normalize-doc-uri
(handler/prepare-rename components)
(conform-or-log ::coercer/prepare-rename-or-error)
after-changes))
(defmethod lsp.server/receive-request "textDocument/rename" [_ components params]
(->> params
normalize-doc-uri
(handler/rename components)
(conform-or-log ::coercer/workspace-edit-or-error)
eventually))
(defmethod lsp.server/receive-request "textDocument/hover" [_ components params]
(->> params
normalize-doc-uri
(handler/hover components)
(conform-or-log ::coercer/hover-or-error)
eventually))
(defmethod lsp.server/receive-request "textDocument/signatureHelp" [_ components params]
(->> params
normalize-doc-uri
(handler/signature-help components)
(conform-or-log ::coercer/signature-help-or-error)
eventually))
(defmethod lsp.server/receive-request "textDocument/formatting" [_ components params]
(->> params
normalize-doc-uri
(handler/formatting components)
(conform-or-log ::coercer/edits-or-error)
eventually))
(defmethod lsp.server/receive-request "textDocument/rangeFormatting" [_this components params]
(->> params
normalize-doc-uri
(handler/range-formatting components)
(conform-or-log ::coercer/edits-or-error)
after-changes))
(defmethod lsp.server/receive-request "textDocument/codeAction" [_ components params]
(->> params
normalize-doc-uri
(handler/code-actions components)
(conform-or-log ::coercer/code-actions-or-error)
after-changes))
(defmethod lsp.server/receive-request "textDocument/codeLens" [_ components params]
(->> params
normalize-doc-uri
(handler/code-lens components)
(conform-or-log ::coercer/code-lenses-or-error)
after-changes))
(defmethod lsp.server/receive-request "codeLens/resolve" [_ components code-lens]
(->> code-lens
(handler/code-lens-resolve components)
(conform-or-log ::coercer/code-lens-or-error)
eventually))
(defmethod lsp.server/receive-request "textDocument/definition" [_ components params]
(->> params
normalize-doc-uri
(handler/definition components)
(conform-or-log ::coercer/location-or-error)
eventually))
(defmethod lsp.server/receive-request "textDocument/declaration" [_ components params]
(->> params
normalize-doc-uri
(handler/declaration components)
(conform-or-log ::coercer/location-or-error)
eventually))
(defmethod lsp.server/receive-request "textDocument/implementation" [_ components params]
(->> params
normalize-doc-uri
(handler/implementation components)
(conform-or-log ::coercer/locations-or-error)
eventually))
(defmethod lsp.server/receive-request "textDocument/documentSymbol" [_ components params]
(->> params
normalize-doc-uri
(handler/document-symbol components)
(conform-or-log ::coercer/document-symbols-or-error)
after-changes))
(defmethod lsp.server/receive-request "textDocument/documentHighlight" [_ components params]
(->> params
normalize-doc-uri
(handler/document-highlight components)
(conform-or-log ::coercer/document-highlights-or-error)
after-changes))
(defmethod lsp.server/receive-request "textDocument/semanticTokens/full" [_ components params]
(->> params
normalize-doc-uri
(handler/semantic-tokens-full components)
(conform-or-log ::coercer/semantic-tokens-or-error)
after-changes))
(defmethod lsp.server/receive-request "textDocument/semanticTokens/range" [_ components params]
(->> params
normalize-doc-uri
(handler/semantic-tokens-range components)
(conform-or-log ::coercer/semantic-tokens-or-error)
after-changes))
(defmethod lsp.server/receive-request "textDocument/prepareCallHierarchy" [_ components params]
(->> params
normalize-doc-uri
(handler/prepare-call-hierarchy components)
(conform-or-log ::coercer/call-hierarchy-items-or-error)
eventually))
(defmethod lsp.server/receive-request "callHierarchy/incomingCalls" [_ components params]
(->> params
(handler/call-hierarchy-incoming components)
(conform-or-log ::coercer/call-hierarchy-incoming-calls-or-error)
eventually))
(defmethod lsp.server/receive-request "callHierarchy/outgoingCalls" [_ components params]
(->> params
(handler/call-hierarchy-outgoing components)
(conform-or-log ::coercer/call-hierarchy-outgoing-calls-or-error)
eventually))
(defmethod lsp.server/receive-request "textDocument/linkedEditingRange" [_ components params]
(->> params
normalize-doc-uri
(handler/linked-editing-ranges components)
(conform-or-log ::coercer/linked-editing-ranges-or-error)
eventually))
(defmethod lsp.server/receive-request "textDocument/foldingRange" [_ components params]
(->> params
normalize-doc-uri
(handler/folding-range components)
(conform-or-log ::coercer/folding-ranges-or-error)
eventually))
;;;; Workspace features
;; https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#workspaceFeatures
(defmethod lsp.server/receive-request "workspace/executeCommand" [_ components params]
(->> params
(handler/execute-command components)
(conform-or-log ::coercer/any-or-error)
eventually))
(defmethod lsp.server/receive-notification "workspace/didChangeConfiguration" [_ components params]
(->> params
(handler/did-change-configuration components)
eventually))
(defmethod lsp.server/receive-notification "workspace/didChangeWatchedFiles" [_ components params]
(->> (medley/update-existing params
:changes (fn [changes]
(mapv (fn [change]
(medley/update-existing change :uri normalize-uri))
changes)))
(conform-or-log ::coercer/did-change-watched-files-params)
(handler/did-change-watched-files components)))
(defmethod lsp.server/receive-request "workspace/symbol" [_ components params]
(->> params
(handler/workspace-symbols components)
(conform-or-log ::coercer/workspace-symbols-or-error)
eventually))
(defmethod lsp.server/receive-request "workspace/willRenameFiles" [_ components params]
(->> (medley/update-existing params
:files (fn [files]
(mapv (fn [file]
(-> file
(medley/update-existing :old-uri normalize-uri)
(medley/update-existing :new-uri normalize-uri)))
files)))
(handler/will-rename-files components)
(conform-or-log ::coercer/workspace-edit-or-error)
after-changes))
(defmethod lsp.server/receive-notification "workspace/didRenameFiles" [_ components params]
(->> params
(handler/did-rename-files components)
eventually))
(defn capabilities [settings]
(conform-or-log
::coercer/server-capabilities
{:document-highlight-provider true
:hover-provider true
:declaration-provider true
:implementation-provider true
:signature-help-provider []
:call-hierarchy-provider true
:linked-editing-range-provider true
:code-action-provider (vec (vals coercer/code-action-kind))
:code-lens-provider true
:references-provider true
:rename-provider true
:definition-provider true
:document-formatting-provider ^Boolean (:document-formatting? settings)
:document-range-formatting-provider ^Boolean (:document-range-formatting? settings)
:document-symbol-provider true
:workspace-symbol-provider true
:workspace {:file-operations {:will-rename {:filters [{:scheme "file"
:pattern {:glob known-files-pattern
:matches "file"}}]}
:did-rename {:filters [{:scheme "file"
:pattern {:glob known-files-pattern
:matches "file"}}]}}}
:semantic-tokens-provider (when (or (not (contains? settings :semantic-tokens?))
(:semantic-tokens? settings))
{:token-types semantic-tokens/token-types-str
:token-modifiers semantic-tokens/token-modifiers-str
:range true
:full true})
:execute-command-provider f.command/available-commands
:text-document-sync (:text-document-sync-kind settings)
:completion-provider {:resolve-provider true :trigger-characters [":" "/"]}
:folding-range-provider true
:experimental {:test-tree true
:project-tree true
:cursor-info true
:server-info true
:clojuredocs true}}))
;;;; Lifecycle messages
;; https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#lifeCycleMessages
(defn client-settings [params]
(-> params
:initialization-options
(or {})
(settings/clean-client-settings)))
(defn ^:private exit [server]
(logger/info "Exiting...")
(lsp.server/shutdown server) ;; blocks, waiting up to 10s for previously received messages to be processed
(shutdown-agents)
(System/exit 0))
(defmethod lsp.server/receive-request "initialize" [_ {:keys [db* server] :as components} params]
(logger/info "Initializing...")
;; TODO: According to the spec, we shouldn't process any other requests or
;; notifications until we've received this request. Furthermore, we shouldn't
;; send any requests or notifications (except for $/progress and a few others)
;; until after responding to this request. However, we start sending
;; diagnostics notifications during `handler/initialize`. This particular case
;; might be fixed by delaying `spawn-async-tasks!` until the end of this
;; method, or to `initialized`, but the more general case of being selective
;; about which messages are sent when probably needs to be handled in lsp4clj.
;; https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#initialize
(handler/initialize components
(normalize-uri (:root-uri params))
(:capabilities params)
(client-settings params)
(some-> params :work-done-token str))
(when-let [trace-level (:trace params)]
(lsp.server/set-trace-level server trace-level))
(when-let [parent-process-id (:process-id params)]
(lsp.liveness-probe/start! parent-process-id log-wrapper-fn #(exit server)))
{:capabilities (capabilities (settings/all @db*))})
(defmethod lsp.server/receive-notification "initialized" [_ {:keys [server db*]} _params]
(logger/info "Initialized!")
(when (-> @db* :client-capabilities :workspace :did-change-watched-files)
(->> {:registrations [{:id "id"
:method "workspace/didChangeWatchedFiles"
:register-options {:watchers [{:glob-pattern known-files-pattern}]}}]}
(lsp.server/send-request server "client/registerCapability"))))
(defmethod lsp.server/receive-request "shutdown" [_ {:keys [db*]} _params]
(logger/info "Shutting down...")
(reset! db* db/initial-db) ;; resets db for dev
nil)
(defmethod lsp.server/receive-notification "exit" [_ {:keys [server]} _params]
(exit server))
(defmethod lsp.server/receive-notification "$/setTrace" [_ {:keys [server]} {:keys [value]}]
(lsp.server/set-trace-level server value))
(defn- spawn-async-loop! [task-name ch f]
(async/thread
(loop []
(when-let [v (async/<!! ch)]
(try
(f v)
(catch Exception e
(logger/error e (format "Error during async task %s" task-name))))
(recur)))))
(defn ^:private spawn-async-tasks!
[{:keys [producer current-changes-chan diagnostics-chan
watched-files-chan edits-chan] :as components}]
(let [debounced-diags (shared/debounce-by diagnostics-chan diagnostics-debounce-ms :uri)
debounced-changes (shared/debounce-by current-changes-chan change-debounce-ms :uri)
debounced-watched-files (shared/debounce-all watched-files-chan watched-files-debounce-ms)]
(spawn-async-loop!
:edits edits-chan
(fn [edit]
(producer/publish-workspace-edit producer edit)))
(spawn-async-loop!
:diagnostics debounced-diags
(fn [diagnostic]
(producer/publish-diagnostic producer diagnostic)))
(spawn-async-loop!
:changes debounced-changes
(fn [changes]
(shared/logging-task
:analyze-file
(f.file-management/analyze-changes changes components))))
(spawn-async-loop!
:watched-files debounced-watched-files
(fn [watched-files]
(shared/logging-task
:analyze-files-in-watched-dir
(f.file-management/analyze-watched-files! watched-files components))))))
(defn ^:private monitor-server-logs [log-ch]
;; NOTE: if this were moved to `initialize`, after timbre has been configured,
;; the server's startup logs and traces would appear in the regular log file
;; instead of the temp log file. We don't do this though because if anything
;; bad happened before `initialize`, we wouldn't get any logs.
(async/go-loop []
(when-let [log-args (async/<! log-ch)]
(apply log-wrapper-fn log-args)
(recur))))
(defn ^:private setup-dev-environment [db* components]
;; We don't have an ENV=development flag, so the next best indication that
;; we're in a development environment is whether we're able to start an nREPL.
(when-let [nrepl-port (nrepl/setup-nrepl)]
;; Save the port in the db, so it can be reported in server-info.
(swap! db* assoc :port nrepl-port)
;; Add components to db* so it's possible to manualy call funcstions
;; which expect specific components
(swap! db* assoc-in [:dev :components] components)
;; In the development environment, make the db* atom available globally as
;; db/db*, so it can be inspected in the nREPL.
(alter-var-root #'db/db* (constantly db*))))
(defn start-server! [server log-path]
(let [timbre-logger (->TimbreLogger)
log-path (if log-path
(do
(logger/setup timbre-logger)
(logger/set-log-path timbre-logger log-path)
log-path)
(logger/setup timbre-logger))
db* (atom (assoc db/initial-db :log-path log-path))
producer (ClojureLspProducer. server db*)
components {:db* db*
:logger timbre-logger
:producer producer
:server server
:current-changes-chan (async/chan 1)
:diagnostics-chan (async/chan 1)
:watched-files-chan (async/chan 1)
:edits-chan (async/chan 1)}]
(logger/info "[SERVER]" "Starting server...")
(monitor-server-logs (:log-ch server))
(setup-dev-environment db* components)
(spawn-async-tasks! components)
(lsp.server/start server components)))
(defn run-lsp-io-server! [trace-level log-path]
(lsp.server/discarding-stdout
(let [log-ch (async/chan (async/sliding-buffer 20))
server (lsp.io-server/stdio-server {:log-ch log-ch
:trace-ch log-ch
:trace-level trace-level})]
(start-server! server log-path))))