Opsworks Java部署挂钩

我的应用程序目前通过TeamCity和Gradle的混合部署在AWS Opsworks中，但我需要利用部署挂钩执行一些任务，如Liquibase迁移、符号链接等

似乎我有Opsworks识别正确的RB文件在部署文件夹中，但当它运行它们时，我会因为缺少属性而得到隐式类型转换错误。我曾尝试将这些内容手动添加到自定义JSON中，作为一种解决方法，但没有效果

下面是导致问题的错误、部署JSON和参数。我只是想知道如何填写属性值并克服错误。提前谢谢

TypeError
---------
no implicit conversion of nil into String


Cookbook Trace:
---------------
/var/lib/aws/opsworks/cache.stage2/cookbooks/deploy/definitions/opsworks_deploy.rb:154:in `block (3 levels) in from_file'


Resource Declaration:
---------------------
# In /var/lib/aws/opsworks/cache.stage2/cookbooks/deploy/definitions/opsworks_deploy.rb

65:     deploy deploy[:deploy_to] do
66:       provider Chef::Provider::Deploy.const_get(deploy[:chef_provider])
67:       keep_releases deploy[:keep_releases]
68:       repository deploy[:scm][:repository]
69:       user deploy[:user]
70:       group deploy[:group]
71:       revision deploy[:scm][:revision]
72:       migrate deploy[:migrate]
73:       migration_command deploy[:migrate_command]
74:       environment deploy[:environment].to_hash
75:       create_dirs_before_symlink( deploy[:create_dirs_before_symlink] )
76:       symlink_before_migrate( deploy[:symlink_before_migrate] )
77:       action deploy[:action]
78:
79:       if deploy[:application_type] == 'rails' && node[:opsworks][:instance][:layers].include?('rails-app')
80:         restart_command "sleep #{deploy[:sleep_before_restart]} && #{node[:opsworks][:rails_stack][:restart_command]}"
81:       end
82: 

The attribute which seems to be generating the issue:
params {:deploy_data=>{"deploy_to"=>"/srv/www/deploy-name", (tons of skipped params) ..., :name=>nil}

Current JSON under which the error is thrown:
{"deploy": {"deploy-name": {"scm": {"user": "accesskey", "password": "secretkey" }}}}

Adjusted JSON in an attempt to resolve:
{"deploy": {"deploy-name": {"scm": {"user": "accesskey", "password": "secretkey" }}, "name": "deploy-name"}}

---

事实证明，使用nil进行隐式类型转换（其中编译行上的属性为nil）会产生误导

问题来自部署钩子本身内部，没有显示部署钩子中的错误代码。一旦这个问题得到解决，就再也没有问题了