Question

在基于解放者的clojure项目中，我们使用datomic作为DB。在将我们的本地dev数据库迁移到S3托管数据库并在我们的project.clj上添加所需的依赖项之后，我们无法启动REPL但是Liberator堆栈在lein run

之前运行正常

我的猜测是数据库连接搞乱了，所以问题是，我怎么能以某种方式“调试”或弄清楚这个lein repl超时的原因是什么？

我的project.clj

(defproject myproject "0.1.0-SNAPSHOT"
  :main myproject.core
  :jvm-opts ["-Xmx1G"]
  :datomic {:schemas ["resources" ["myproject-schema.edn" ]]}
  :plugins [[lein-ring "0.8.10"]]
  ; cp bin/transactor config/samples/free-transactor-template.properties resources/transactor.properties
  :profiles {:dev
             {:datomic {
                        ; :config resources/transactor.properties
                        ; :db-uri "datomic:free://127.0.0.1:4334/myproject"}
                        :db-uri "datomic:ddb://us-east-1/datomica/myproject"}

 :dependencies [[ring-mock "0.1.5"]
                             [midje "1.5.1"]
                             ]
              }
             }
  :dependencies [[org.clojure/clojure "1.5.1"]
                 [com.datomic/datomic-pro "0.9.4556"]
                 ; [com.datomic/datomic-free "0.9.4470"]
                 [com.cemerick/friend "0.2.0"]
                 [liberator "0.10.0"]
                 [compojure "1.1.5"]
                 [http-kit "2.1.13"]
                 [cheshire "5.1.1"]
                 [ring/ring-jetty-adapter "1.1.0"]
                 [ring/ring-devel "1.2.0"]
                 [org.clojure/clojure-contrib "1.2.0"]
                 [url62 "1.0.0-SNAPSHOT"]
                 [clj-http "0.7.8"]
                 [org.clojars.nathell/clojure-contrib "1.2.0"]
                 [com.taoensso/timbre "3.0.0-RC4"]
                 [clj-aws-s3 "0.3.8"]
                 [image-resizer "0.1.5"]
                 [pandect "0.3.1"]
                 [base64-clj "0.1.1"]
                 ]
    :ring {
           :handler myproject.core
           }
)

我的个人资料.clj

cat ~/.lein/profiles.clj                                                           
{:user {:dependencies [[slamhound "1.5.0"]]
        :aliases {"slamhound"["run" "-m" "slam.hound"]}
        :plugins [[lein-datomic "0.2.0"]
                  [lein-midje "3.0.0"]
                                  [lein-html5-docs "2.0.0"]
                                  [lein-pprint "1.1.2-SNAPSHOT"]]
                ; :datomic {:install-location "/opt/datomic-free"}
                :datomic {:install-location "/opt/datomic-pro/"}
                }
}%

我的.zshrc

export CLASSPATH=$CLASSPATH:/home/user:/opt/datomic-pro:.

我的环境

Leiningen 2.3.3 on Java 1.7.0_25 OpenJDK 64-Bit Server VM
Linux 3.8.0-35-generic #50-Ubuntu SMP Tue Dec 3 01:24:59 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

Answer 1

所有鸭子有时需要一段时间才能完成。在project.clj文件中指定:repl-options的时间更长，如下所示：

:repl-options {
             ;; If nREPL takes too long to load it may timeout,
             ;; increase this to wait longer before timing out.
             ;; Defaults to 30000 (30 seconds)
             :timeout 120000
             }

希望这应该成功。

Answer 2

原因是多个文件之间多重重新定义和评估Datomic连接

(def conn (d/connect DATOMIC_URI))

已在How to deal with a variable in a library that needs to be set outside of it?

讨论了此主题的解决方案

Answer 3

在project.clj的字段：repl-options中设置超时值，默认值为30000（30s）。例如：

:repl-options{:timeout 120000}

lein REPL服务器启动超时

3 个答案: