Nifi通过Rest-API创建控制器服务

Question

我正在尝试从nifi rest api创建一个DbcpController服务。我也得到了正确的响应，但是当我进入UI时，控制器服务不可见。

curl -i -X POST -H 'Content-Type:application/json' 
-d '{"revision":{"clientId":"a09f2359-0165-1000-bf28-1dca98f6e259","version":0},
"permissions":{"canRead":true,"canWrite":true},"bulletins":[],
"component":{"name":"Dynamic-Pool","type":"org.apache.nifi.dbcp.DBCPConnectionPool",
"bundle":{"group":"org.apache.nifi","artifact":"nifi-dbcp-service-nar","version":"1.6.0"},
"controllerServiceApis":[{"type":"org.apache.nifi.dbcp.DBCPService",
"bundle":{"group":"org.apache.nifi","artifact":"nifi-standard-services-api-nar","version":"1.6.0"}}],
"comments":"","state":"DISABLED","persistsState":false,"restricted":false,"deprecated":false,
"multipleVersionsAvailable":true,"properties":{"Database Connection URL":"jdbc:oracle:thin:@144.21.86.182:1521/ORCL.607022672.oraclecloud.internal",
"Database Driver Class Name":"oracle.jdbc.driver.OracleDriver",
"database-driver-locations":"/home/siddharth/Downloads/ojdbc7.jar","Database User":"test","Password":"***",
"Max Wait Time":"500 millis","Max Total Connections":"8","Validation-query":null},"descriptors":{ } } }' 
http://localhost:9090/nifi-api/controller/controller-services/

响应：

HTTP/1.1 201 Created
Date: Mon, 03 Sep 2018 18:19:28 GMT
X-Frame-Options: SAMEORIGIN
Location: http://localhost:9090/nifi-api/controller-services/a0a93568-0165-1000-0c3b-ff9494571881
Content-Type: application/json
Vary: Accept-Encoding
Vary: User-Agent
Content-Length: 3614
Server: Jetty(9.4.3.v20170317)

如果我单击该位置，还将显示详细信息。

请求中是否缺少我想要的任何参数。

Answer 1

我不确定“当我进入UI时，控制器服务不可见”是什么意思。

1. 当您进入Apache NiFi UI并单击 Global Menu>控制器设置>控制器服务时，看不到列出的任何控制器服务-可能刷新浏览器并清除缓存？我不认为这是您的问题
2. 已列出Controller Service，但不能在处理器中使用-这是因为CS已添加到全局级别，这意味着Reporting Tasks可以引用它，但处理器不能使用在画布上。您需要在JSON的parentGroupId对象中提供一个ControllerServiceDTO，以便CS可供画布上的组件（在该父组中）使用。您的URL如下所示：/nifi-api/process-groups/a0f3dfb7-0165-1000-8310-4fb72628adaa/controller-services。 我认为这是您的问题
3. 可以在处理器中使用控制器服务，但未启用它-这是因为您要将CS的状态设置为DISABLED。您可以发出启用CS的附加命令，或最初将状态设置为ENABLED

如果右键单击画布并选择 Configure （配置），则会为您所在的进程组显示一个对话框（默认为 root < / em>级别），并且有一个“ Controller Services”标签，其中会列出您创建的CS。

您始终可以在用户界面中执行这些操作，并使用浏览器的“开发人员工具”面板监视请求-NiFi的用户界面是REST API的使用者，因此在此执行的任何活动都可以单独使用API​​来完成。

示例：

添加报告任务控制器服务

curl 'http://localhost:8080/nifi-api/controller/controller-services' -H 'Origin: http://localhost:8080' -H 'Accept-Encoding: gzip, deflate, br' -H 'Accept-Language: en-US,en;q=0.9' -H 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36' -H 'Content-Type: application/json' -H 'Accept: application/json, text/javascript, */*; q=0.01' -H 'Referer: http://localhost:8080/nifi/' -H 'X-Requested-With: XMLHttpRequest' -H 'Connection: keep-alive' -H 'DNT: 1' --data-binary '{"revision":{"clientId":"a0f490b8-0165-1000-a521-4d24892f12c0","version":0},"disconnectedNodeAcknowledged":false,"component":{"type":"org.apache.nifi.processors.aws.credentials.provider.service.AWSCredentialsProviderControllerService","bundle":{"group":"org.apache.nifi","artifact":"nifi-aws-nar","version":"1.8.0-SNAPSHOT"}}}' --compressed

启用报告任务控制器服务

curl 'http://localhost:8080/nifi-api/controller-services/a0f4dbe2-0165-1000-8cd2-dd50d7dba48d' -X PUT -H 'Origin: http://localhost:8080' -H 'Accept-Encoding: gzip, deflate, br' -H 'Accept-Language: en-US,en;q=0.9' -H 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36' -H 'Content-Type: application/json' -H 'Accept: application/json, text/javascript, */*; q=0.01' -H 'Referer: http://localhost:8080/nifi/' -H 'X-Requested-With: XMLHttpRequest' -H 'Connection: keep-alive' -H 'DNT: 1' --data-binary '{"revision":{"clientId":"a0f490b8-0165-1000-a521-4d24892f12c0","version":1},"disconnectedNodeAcknowledged":false,"component":{"id":"a0f4dbe2-0165-1000-8cd2-dd50d7dba48d","state":"ENABLED"}}' --compressed

为画布上的组件添加可用的控制器服务

curl 'http://localhost:8080/nifi-api/process-groups/a0f3dfb7-0165-1000-8310-4fb72628adaa/controller-services' -H 'Origin: http://localhost:8080' -H 'Accept-Encoding: gzip, deflate, br' -H 'Accept-Language: en-US,en;q=0.9' -H 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36' -H 'Content-Type: application/json' -H 'Accept: application/json, text/javascript, */*; q=0.01' -H 'Referer: http://localhost:8080/nifi/?processGroupId=root&componentIds=a0f7e36a-0165-1000-ef42-c59f18644d42' -H 'X-Requested-With: XMLHttpRequest' -H 'Connection: keep-alive' -H 'DNT: 1' --data-binary '{"revision":{"clientId":"a0f490b8-0165-1000-a521-4d24892f12c0","version":0},"disconnectedNodeAcknowledged":false,"component":{"type":"org.apache.nifi.ssl.StandardRestrictedSSLContextService","bundle":{"group":"org.apache.nifi","artifact":"nifi-ssl-context-service-nar","version":"1.8.0-SNAPSHOT"},"name":"StandardRestrictedSSLContextService"}}' --compressed