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Postgresql 无法使用钢筋生成epgsql启动发布_Postgresql_Erlang_Rebar - Fatal编程技术网

Postgresql 无法使用钢筋生成epgsql启动发布

Postgresql 无法使用钢筋生成epgsql启动发布,postgresql,erlang,rebar,Postgresql,Erlang,Rebar,当我用rebar生成发布应用程序并尝试用key console启动它时,我发现了一个错误 {“init终止于do_boot”,{'cannot load',pgsql,get_file}。 在app.src和reltool.config的所有文件中,我都添加了epgsql应用程序 app.src: {application, leasing, [ {description, ""}, {vsn, "1"}, {registered, []}, {applications, [

当我用rebar生成发布应用程序并尝试用key console启动它时,我发现了一个错误

{“init终止于do_boot”,{'cannot load',pgsql,get_file}。

在app.src和reltool.config的所有文件中,我都添加了epgsql应用程序

app.src:

{application, leasing,
 [
  {description, ""},
  {vsn, "1"},
  {registered, []},
  {applications, [
              kernel,
              stdlib,
              crypto,
              ssl,
              public_key,
              epgsql,
              amqp_client,
              rabbit_common
            ]},
{mod, { leasing_app, []}},
{env, []}
]}.
reltool.config

{sys, [
   {lib_dirs, ["../deps", "../apps"]},
   {erts, [{mod_cond, derived}, {app_file, strip}]},
   {app_file, strip},
   {rel, "leasingnode", "1",
    [
     kernel,
     stdlib,
     sasl,
     crypto,
     ssl,
     public_key,
     epgsql,
     amqp_client,
     rabbit_common,
     leasing
    ]},
   {rel, "start_clean", "",
    [
     kernel,
     stdlib
    ]},
   {boot_rel, "leasingnode"},
   {profile, embedded},
   {incl_cond, exclude},
   {excl_archive_filters, [".*"]}, %% Do not archive built libs
   {excl_sys_filters, ["^bin/.*", "^erts.*/bin/(dialyzer|typer)",
                       "^erts.*/(doc|info|include|lib|man|src)"]},
   {excl_app_filters, ["\.gitignore"]},
   {app, sasl,   [{incl_cond, include}]},
   {app, stdlib, [{incl_cond, include}]},
   {app, kernel, [{incl_cond, include}]},
   {app, crypto, [{incl_cond, include}]},
   {app, ssl, [{incl_cond, include}]},
   {app, public_key, [{incl_cond, include}]},
   {app, epgsql, [{incl_cond, include}]},
   {app, amqp_client, [{incl_cond, include}]},
   {app, rabbit_common, [{incl_cond, include}]},
   {app, leasing, [{incl_cond, include}]}

  ]}.

{target_dir, "leasingnode"}.

{overlay, [
       {mkdir, "log/sasl"},
       {copy, "files/erl", "\{\{erts_vsn\}\}/bin/erl"},
       {copy, "files/nodetool", "\{\{erts_vsn\}\}/bin/nodetool"},
       {copy, "files/leasingnode", "bin/leasingnode"},
       {copy, "files/leasingnode.cmd", "bin/leasingnode.cmd"},
       {copy, "files/start_erl.cmd", "bin/start_erl.cmd"},
       {copy, "files/install_upgrade.escript", "bin/install_upgrade.escript"},
       {copy, "files/sys.config", "releases/\{\{rel_vsn\}\}/sys.config"},
       {copy, "files/vm.args", "releases/\{\{rel_vsn\}\}/vm.args"}
      ]}.
当我从ERLShell启动它时,一切正常,但当我生成发布时,我有一个错误。 当我关闭epgsql应用程序启动时,我看到所有应用程序(加密、ssl、公钥已加载),但如果再次添加epgsql,则会出现错误


我做错了什么?

我自己也在努力解决同样的问题。我发现,即使我将epgsql依赖项放入应用程序文件中,但在代码中不使用它的任何模块,epgsql应用程序也不会包含在发行版中。原来这不是钢筋的问题。幕后 钢筋使用REL工具。这是一个实际生成版本的工具,在我看来,它使用了来自beam文件的一些信息,并且本身剥离了未使用的应用程序

为了解决这个问题,我想出了两种方法:

  • a。在代码中使用任何epgsql模块,甚至pgsql:yyy()也可以:)
  • b。将{app,epgsql,[{incl_cond,include}]}添加到reltool.config中
事实上,这是一个普遍的问题,不是特定于epgsql的