从 heroku 发送带有邮件的电子邮件会引发奇怪的异常
Sending email with postal from heroku fires strange exception
我正在尝试使用邮政从托管在 Heroku 上的 Pedestal 应用程序发送电子邮件。
电子邮件应在 POST /send_email 处理程序中发送。
但它失败了：
clojure.lang.ExceptionInfo:
Interceptor Exception: No implementation of method: :make-input-stream of
protocol: #'clojure.java.io/IOFactory found for class: nil
它在本地或通过 heroku 上的 repl 运行 工作。
来源：
(ns team-happiness.routes
(:require [io.pedestal.http :as bootstrap]
[io.pedestal.http.route.definition :refer [defroutes]]
[io.pedestal.http.body-params :as body-params]
[postal.core :as postal]))
(defn smtp []
{:host (System/getenv "SENDGRID_HOST")
:ssl true
:user (System/getenv "SENDGRID_USERNAME")
:pass (System/getenv "SENDGRID_PASSWORD")})
(defn mail []
{:from "bla@bla.com"
:to "bla@bla.com"
:subject "Hi!"
:body "Hello from Heroku!"})
(defn send-email [request]
(postal/send-message (smtp) (mail))
{:status 200 :headers {} :body ""})
(defroutes routes
[[
[ "/send_email" {:post send-email}]
]])
堆栈跟踪：
2015-08-26T21:22:25.474347+00:00 app[web.1]: clojure.lang.ExceptionInfo: Interceptor Exception: No implementation of method: :make-input-stream of protocol: #'clojure.java.io/IOFactory found for class: nil
2015-08-26T21:22:25.474349+00:00 app[web.1]: at clojure.core$ex_info.invoke(core.clj:4593) ~[na:na]
2015-08-26T21:22:25.474350+00:00 app[web.1]: at io.pedestal.impl.interceptor$throwable__GT_ex_info.invoke(interceptor.clj:31) ~[na:na]
2015-08-26T21:22:25.474352+00:00 app[web.1]: at io.pedestal.impl.interceptor$try_f.invoke(interceptor.clj:53) ~[na:na]
2015-08-26T21:22:25.474354+00:00 app[web.1]: at io.pedestal.impl.interceptor$enter_all_with_binding.invoke(interceptor.clj:141) ~[na:na]
2015-08-26T21:22:25.474355+00:00 app[web.1]: at io.pedestal.impl.interceptor$enter_all$fn__12957.invoke(interceptor.clj:156) ~[na:na]
2015-08-26T21:22:25.474357+00:00 app[web.1]: at clojure.lang.AFn.applyToHelper(AFn.java:152) ~[team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474358+00:00 app[web.1]: at clojure.lang.AFn.applyTo(AFn.java:144) ~[team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474359+00:00 app[web.1]: at clojure.core$apply.invoke(core.clj:630) ~[na:na]
2015-08-26T21:22:25.474361+00:00 app[web.1]: at clojure.core$with_bindings_STAR_.doInvoke(core.clj:1868) ~[na:na]
2015-08-26T21:22:25.474362+00:00 app[web.1]: at clojure.lang.RestFn.invoke(RestFn.java:425) ~[team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474364+00:00 app[web.1]: at io.pedestal.impl.interceptor$enter_all.invoke(interceptor.clj:154) ~[na:na]
2015-08-26T21:22:25.474365+00:00 app[web.1]: at io.pedestal.impl.interceptor$execute.invoke(interceptor.clj:272) [na:na]
2015-08-26T21:22:25.474367+00:00 app[web.1]: at io.pedestal.http.impl.servlet_interceptor$interceptor_service_fn$fn__15523.invoke(servlet_interceptor.clj:398) [na:na]
2015-08-26T21:22:25.474368+00:00 app[web.1]: at io.pedestal.http.servlet.FnServlet.service(servlet.clj:28) [na:na]
2015-08-26T21:22:25.474369+00:00 app[web.1]: at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:751) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474371+00:00 app[web.1]: at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:566) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474372+00:00 app[web.1]: at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1111) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474373+00:00 app[web.1]: at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:498) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474375+00:00 app[web.1]: at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1045) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474376+00:00 app[web.1]: at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474377+00:00 app[web.1]: at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:98) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474379+00:00 app[web.1]: at org.eclipse.jetty.server.Server.handle(Server.java:461) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474380+00:00 app[web.1]: at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:284) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474381+00:00 app[web.1]: at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:244) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474394+00:00 app[web.1]: at org.eclipse.jetty.io.AbstractConnection.run(AbstractConnection.java:534) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474395+00:00 app[web.1]: at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:607) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474397+00:00 app[web.1]: at org.eclipse.jetty.util.thread.QueuedThreadPool.run(QueuedThreadPool.java:536) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474398+00:00 app[web.1]: at java.lang.Thread.run(Thread.java:745) [na:1.7.0_79]
2015-08-26T21:22:25.474400+00:00 app[web.1]: Caused by: java.lang.IllegalArgumentException: No implementation of method: :make-input-stream of protocol: #'clojure.java.io/IOFactory found for class: nil
2015-08-26T21:22:25.474401+00:00 app[web.1]: at clojure.core$_cache_protocol_fn.invoke(core_deftype.clj:554) ~[na:na]
2015-08-26T21:22:25.474402+00:00 app[web.1]: at clojure.java.io$eval3371$fn__3372$G__3360__3379.invoke(io.clj:69) ~[na:na]
2015-08-26T21:22:25.474403+00:00 app[web.1]: at clojure.java.io$input_stream.doInvoke(io.clj:136) ~[na:na]
2015-08-26T21:22:25.474404+00:00 app[web.1]: at clojure.lang.RestFn.invoke(RestFn.java:410) ~[team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474406+00:00 app[web.1]: at postal.support$pom_version.invoke(support.clj:61) ~[na:na]
2015-08-26T21:22:25.474407+00:00 app[web.1]: at postal.support$user_agent.invoke(support.clj:67) ~[na:na]
2015-08-26T21:22:25.474408+00:00 app[web.1]: at postal.message$make_jmessage.invoke(message.clj:177) ~[na:na]
2015-08-26T21:22:25.474410+00:00 app[web.1]: at postal.smtp$smtp_send_STAR_$fn__17638.invoke(smtp.clj:34) ~[na:na]
2015-08-26T21:22:25.474411+00:00 app[web.1]: at clojure.core$map$fn__560.invoke(core.clj:2624) ~[na:na]
2015-08-26T21:22:25.474412+00:00 app[web.1]: at clojure.lang.LazySeq.sval(LazySeq.java:40) ~[team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474414+00:00 app[web.1]: at clojure.lang.LazySeq.seq(LazySeq.java:49) ~[team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474419+00:00 app[web.1]: at clojure.lang.RT.seq(RT.java:507) ~[team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474420+00:00 app[web.1]: at clojure.core$seq__27.invoke(core.clj:137) ~[na:na]
2015-08-26T21:22:25.474421+00:00 app[web.1]: at postal.smtp$smtp_send_STAR_.invoke(smtp.clj:35) ~[na:na]
2015-08-26T21:22:25.474423+00:00 app[web.1]: at postal.smtp$smtp_send.doInvoke(smtp.clj:58) ~[na:na]
2015-08-26T21:22:25.474424+00:00 app[web.1]: at clojure.lang.RestFn.invoke(RestFn.java:423) ~[team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474425+00:00 app[web.1]: at postal.core$send_message.invoke(core.clj:35) ~[na:na]
2015-08-26T21:22:25.474427+00:00 app[web.1]: at team_happiness.routes$send_email.invoke(routes.clj:31) ~[team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474428+00:00 app[web.1]: at io.pedestal.interceptor$eval13068$fn__13069$fn__13070.invoke(interceptor.clj:38) ~[na:na]
2015-08-26T21:22:25.474429+00:00 app[web.1]: at io.pedestal.impl.interceptor$try_f.invoke(interceptor.clj:50) ~[na:na]
2015-08-26T21:22:25.474431+00:00 app[web.1]: ... 25 common frames omitted
2015-08-26T21:22:25.474631+00:00 app[web.1]: INFO i.p.http.impl.servlet-interceptor - {:line 266, :msg "sending error", :message "Internal server error: exception"}
我能够通过设置以下配置变量来实现此功能：
$ heroku config:set JVM_OPTS="-Dpostal.version=1.11.3"
问题似乎在于 postal 试图通过检查 pom.properties file inside of it's jar 来确定自身的版本。但是因为这是一个 uberjar，它是一个 jar 里面的一个 jar，并且尝试读取输入流失败。
通过设置上述系统属性，它永远不会在 jar 中查找。
我正在尝试使用邮政从托管在 Heroku 上的 Pedestal 应用程序发送电子邮件。 电子邮件应在 POST /send_email 处理程序中发送。
但它失败了：
clojure.lang.ExceptionInfo:
Interceptor Exception: No implementation of method: :make-input-stream of
protocol: #'clojure.java.io/IOFactory found for class: nil
它在本地或通过 heroku 上的 repl 运行 工作。
来源：
(ns team-happiness.routes
(:require [io.pedestal.http :as bootstrap]
[io.pedestal.http.route.definition :refer [defroutes]]
[io.pedestal.http.body-params :as body-params]
[postal.core :as postal]))
(defn smtp []
{:host (System/getenv "SENDGRID_HOST")
:ssl true
:user (System/getenv "SENDGRID_USERNAME")
:pass (System/getenv "SENDGRID_PASSWORD")})
(defn mail []
{:from "bla@bla.com"
:to "bla@bla.com"
:subject "Hi!"
:body "Hello from Heroku!"})
(defn send-email [request]
(postal/send-message (smtp) (mail))
{:status 200 :headers {} :body ""})
(defroutes routes
[[
[ "/send_email" {:post send-email}]
]])
堆栈跟踪：
2015-08-26T21:22:25.474347+00:00 app[web.1]: clojure.lang.ExceptionInfo: Interceptor Exception: No implementation of method: :make-input-stream of protocol: #'clojure.java.io/IOFactory found for class: nil
2015-08-26T21:22:25.474349+00:00 app[web.1]: at clojure.core$ex_info.invoke(core.clj:4593) ~[na:na]
2015-08-26T21:22:25.474350+00:00 app[web.1]: at io.pedestal.impl.interceptor$throwable__GT_ex_info.invoke(interceptor.clj:31) ~[na:na]
2015-08-26T21:22:25.474352+00:00 app[web.1]: at io.pedestal.impl.interceptor$try_f.invoke(interceptor.clj:53) ~[na:na]
2015-08-26T21:22:25.474354+00:00 app[web.1]: at io.pedestal.impl.interceptor$enter_all_with_binding.invoke(interceptor.clj:141) ~[na:na]
2015-08-26T21:22:25.474355+00:00 app[web.1]: at io.pedestal.impl.interceptor$enter_all$fn__12957.invoke(interceptor.clj:156) ~[na:na]
2015-08-26T21:22:25.474357+00:00 app[web.1]: at clojure.lang.AFn.applyToHelper(AFn.java:152) ~[team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474358+00:00 app[web.1]: at clojure.lang.AFn.applyTo(AFn.java:144) ~[team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474359+00:00 app[web.1]: at clojure.core$apply.invoke(core.clj:630) ~[na:na]
2015-08-26T21:22:25.474361+00:00 app[web.1]: at clojure.core$with_bindings_STAR_.doInvoke(core.clj:1868) ~[na:na]
2015-08-26T21:22:25.474362+00:00 app[web.1]: at clojure.lang.RestFn.invoke(RestFn.java:425) ~[team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474364+00:00 app[web.1]: at io.pedestal.impl.interceptor$enter_all.invoke(interceptor.clj:154) ~[na:na]
2015-08-26T21:22:25.474365+00:00 app[web.1]: at io.pedestal.impl.interceptor$execute.invoke(interceptor.clj:272) [na:na]
2015-08-26T21:22:25.474367+00:00 app[web.1]: at io.pedestal.http.impl.servlet_interceptor$interceptor_service_fn$fn__15523.invoke(servlet_interceptor.clj:398) [na:na]
2015-08-26T21:22:25.474368+00:00 app[web.1]: at io.pedestal.http.servlet.FnServlet.service(servlet.clj:28) [na:na]
2015-08-26T21:22:25.474369+00:00 app[web.1]: at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:751) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474371+00:00 app[web.1]: at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:566) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474372+00:00 app[web.1]: at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1111) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474373+00:00 app[web.1]: at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:498) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474375+00:00 app[web.1]: at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1045) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474376+00:00 app[web.1]: at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474377+00:00 app[web.1]: at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:98) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474379+00:00 app[web.1]: at org.eclipse.jetty.server.Server.handle(Server.java:461) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474380+00:00 app[web.1]: at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:284) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474381+00:00 app[web.1]: at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:244) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474394+00:00 app[web.1]: at org.eclipse.jetty.io.AbstractConnection.run(AbstractConnection.java:534) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474395+00:00 app[web.1]: at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:607) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474397+00:00 app[web.1]: at org.eclipse.jetty.util.thread.QueuedThreadPool.run(QueuedThreadPool.java:536) [team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474398+00:00 app[web.1]: at java.lang.Thread.run(Thread.java:745) [na:1.7.0_79]
2015-08-26T21:22:25.474400+00:00 app[web.1]: Caused by: java.lang.IllegalArgumentException: No implementation of method: :make-input-stream of protocol: #'clojure.java.io/IOFactory found for class: nil
2015-08-26T21:22:25.474401+00:00 app[web.1]: at clojure.core$_cache_protocol_fn.invoke(core_deftype.clj:554) ~[na:na]
2015-08-26T21:22:25.474402+00:00 app[web.1]: at clojure.java.io$eval3371$fn__3372$G__3360__3379.invoke(io.clj:69) ~[na:na]
2015-08-26T21:22:25.474403+00:00 app[web.1]: at clojure.java.io$input_stream.doInvoke(io.clj:136) ~[na:na]
2015-08-26T21:22:25.474404+00:00 app[web.1]: at clojure.lang.RestFn.invoke(RestFn.java:410) ~[team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474406+00:00 app[web.1]: at postal.support$pom_version.invoke(support.clj:61) ~[na:na]
2015-08-26T21:22:25.474407+00:00 app[web.1]: at postal.support$user_agent.invoke(support.clj:67) ~[na:na]
2015-08-26T21:22:25.474408+00:00 app[web.1]: at postal.message$make_jmessage.invoke(message.clj:177) ~[na:na]
2015-08-26T21:22:25.474410+00:00 app[web.1]: at postal.smtp$smtp_send_STAR_$fn__17638.invoke(smtp.clj:34) ~[na:na]
2015-08-26T21:22:25.474411+00:00 app[web.1]: at clojure.core$map$fn__560.invoke(core.clj:2624) ~[na:na]
2015-08-26T21:22:25.474412+00:00 app[web.1]: at clojure.lang.LazySeq.sval(LazySeq.java:40) ~[team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474414+00:00 app[web.1]: at clojure.lang.LazySeq.seq(LazySeq.java:49) ~[team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474419+00:00 app[web.1]: at clojure.lang.RT.seq(RT.java:507) ~[team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474420+00:00 app[web.1]: at clojure.core$seq__27.invoke(core.clj:137) ~[na:na]
2015-08-26T21:22:25.474421+00:00 app[web.1]: at postal.smtp$smtp_send_STAR_.invoke(smtp.clj:35) ~[na:na]
2015-08-26T21:22:25.474423+00:00 app[web.1]: at postal.smtp$smtp_send.doInvoke(smtp.clj:58) ~[na:na]
2015-08-26T21:22:25.474424+00:00 app[web.1]: at clojure.lang.RestFn.invoke(RestFn.java:423) ~[team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474425+00:00 app[web.1]: at postal.core$send_message.invoke(core.clj:35) ~[na:na]
2015-08-26T21:22:25.474427+00:00 app[web.1]: at team_happiness.routes$send_email.invoke(routes.clj:31) ~[team-happiness-0.0.1.jar:na]
2015-08-26T21:22:25.474428+00:00 app[web.1]: at io.pedestal.interceptor$eval13068$fn__13069$fn__13070.invoke(interceptor.clj:38) ~[na:na]
2015-08-26T21:22:25.474429+00:00 app[web.1]: at io.pedestal.impl.interceptor$try_f.invoke(interceptor.clj:50) ~[na:na]
2015-08-26T21:22:25.474431+00:00 app[web.1]: ... 25 common frames omitted
2015-08-26T21:22:25.474631+00:00 app[web.1]: INFO i.p.http.impl.servlet-interceptor - {:line 266, :msg "sending error", :message "Internal server error: exception"}
我能够通过设置以下配置变量来实现此功能：
$ heroku config:set JVM_OPTS="-Dpostal.version=1.11.3"
问题似乎在于 postal 试图通过检查 pom.properties file inside of it's jar 来确定自身的版本。但是因为这是一个 uberjar，它是一个 jar 里面的一个 jar，并且尝试读取输入流失败。
通过设置上述系统属性，它永远不会在 jar 中查找。