Heroku+Grails-在Heroku上构建应用程序时缺少DATABASE_URL

Question

我正在尝试使用grails教程将我的应用程序连接到共享数据库5MB。我使用的是grails 2.1.0。在我的本地机器上，当我运行heroku配置时，我可以看到DATABASE_URL被设置了，但是在执行git push之后······我的生成因错误而停止：

Error packaging application: Error loading DataSource.groovy: null (Use --stacktrace to see the full trace)
Failed to build app
Heroku push rejected, failed to compile Grails app

因此，我添加了日志记录，以查看Heroku上的环境。我已将println system.env添加到datasource.groovy中，但找不到任何database_url:

.[OLDPWD:/app/tmp/repo.git/.cache, SHELL:/bin/bash, SHLVL:2, GIT_DIR:., JAVA_HOME:/usr/lib/jvm/java-6-openjdk, PATH:/app/tmp/repo.git/.cache/.grails/bin::/usr/local/bin:/usr/local/sbin:/usr/bin:/bin:/usr/sbin:/sbin, SSH_CLIENT:XXX, MAIL:XXX, USER:XXX, LOG_TOKEN:t.9e79a5be-dfa2-446e-9f83-f6b4ebbc4eb7, GRAILS_HOME:/app/tmp/repo.git/.cache/.grails, PWD:XXX, HOME:/app/, LOGNAME:u11846, _:/app/tmp/repo.git/.cache/.grails/bin/grails, SSH_CONNECTION:XXX, LD_LIBRARY_PATH:/usr/lib/jvm/java-6-openjdk/jre/lib/amd64/server:/usr/lib/jvm/java-6-openjdk/jre/lib/amd64:/usr/lib/jvm/java-6-openjdk/jre/../lib/amd64]

heroku addons
=== XXX Configured Add-ons
shared-database:5mb

heroku config
=== Config Vars for XXX

DATABASE_URL:        postgres://XXX
JAVA_OPTS:           -Xmx384m -Xss512k -XX:+UseCompressedOops
SHARED_DATABASE_URL: postgres://XXX

production {
    dataSource {
        dbCreate = "update"
        driverClassName = "org.postgresql.Driver"
        dialect = org.hibernate.dialect.PostgreSQLDialect

        println System.env
        println System.env.DATABASE_URL
        uri = new URI(System.env.DATABASE_URL)
        println uri

        url = "jdbc:postgresql://" + uri.host + uri.path
        username = uri.userInfo.split(":")[0]
        password = uri.userInfo.split(":")[1]
    }
}

runtime 'postgresql:postgresql:8.4-702.jdbc3'

Answer 1

应用程序环境变量在生成时不可用。您的代码需要能够相应地处理这一点。或者，您可以启用新的user_env_compileHeroku Labs特性，该特性使环境变量能够在构建时存在：https://devcenter.Heroku.com/articles/labs-user-env-compile