nifi | Apache NiFi is an easy to use , powerful , and reliable system
kandi X-RAY | nifi Summary
kandi X-RAY | nifi Summary
Apache NiFi is an easy to use, powerful, and reliable system to process and distribute data.
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
- Builds the function evaluator .
- Convert an object to an orc object .
- Instantiate the controller services .
- Merge the given list of journal files .
- Method to copy the contents of the snippets
- Builds a path segment from a tree .
- Output events from the binlog queue .
- Gets the content .
- Create Nifi metrics registry .
- Creates the NIFI keystores and trust stores them .
nifi Key Features
nifi Examples and Code Snippets
Community Discussions
Trending Discussions on nifi
QUESTION
I'm getting some data in Nifi that collects JSON but the table that it needs to be inserted in has a different format.
I'm having trouble to deconstruct a JSON structure into smaller pieces - getting stuck with the second what seems like a two or three-part shift. Any ideas to get me to the next step?
Original JSON:
...ANSWER
Answered 2021-Jun-13 at 20:38 [
{
"operation": "shift",
"spec": {
"*": {
"timestamp": "[&1].timestamp",
"inverterId": "[&1].inverterId",
"systemKey": "[&1].systemKey",
"I_DC*_*": "[&1].&"
}
}
}, {
"operation": "shift",
"spec": {
"*": {
"timestamp": "[&1].timestamp",
"inverterId": "[&1].inverterId",
"systemKey": "[&1].systemKey",
"*": "[&1].keysToPivot.&"
}
}
},
{
"operation": "shift",
"spec": {
"*": {
"keysToPivot": {
"*": {
"$": "[&3].[#2].stringId",
"@": "[&3].[#2].value",
"@(2,timestamp)": "[&3].[#2].timestamp",
"@(2,inverterId)": "[&3].[#2].inverterId",
"@(2,systemKey)": "[&3].[#2].systemKey"
}
}
}
}
}
]
QUESTION
I have created a nifi processor that is supposed to read something from a database and put the result in an attribute. The code is very trivial, just creating a simple JDBC connection.
...ANSWER
Answered 2021-Jun-12 at 12:29If you're using the jdbc:mariadb: protocol, then you should use the MariaDB Connector/J, not the MySQL Connector/J driver. The MySQL Connector/J driver only knows about the jdbc:mysql: protocol.
Or alternatively, if you want to continue to use MySQL Connector/J, then you should use protocol jdbc:mysql:. However, given MySQL and MariaDB are - I assume - diverging, it is better to use the driver specifically written for MariaDB.
QUESTION
I use Nife 1.13.2 for build ETL process between Oracle and PostgresQL.
There is an ExecuteSQL processor for retrieving data from Oracle and a PutDatabaseRecord processor for inserting data to PostgresQL's table. In PostgresQL's processor there configured INSERT_IGNORE option. The name of key column in both tables is DOC_ID. But due to insert operation, from some reason, Nifi generate mistaken name of the column as it is seen from follow line: ON CONFLICT (DOCID) DO NOTHING
Here is whole error:
...ANSWER
Answered 2021-Jun-10 at 11:07QUESTION
I need to create a JSON array in order to split it into several jobs with Nifi. The array needs to be created based on an existing array inside the JSON.
Can't figure out how to dynamically create a reference to another object in the JSON. I want the reference "@(2,@)" to work, but this is not supported.
INPUT
...ANSWER
Answered 2021-Jun-08 at 15:50You can proceed one more step by adding "*" key to nest the current spec more while roaming by @(3,&) dynamically as this ampersand represents the incurred key values name and id such as
QUESTION
I want to make Flow Definitions portable by replacing absolute file paths to relative in below items
Script PathProperty of allExecuteScriptProcessorsDatabase Driver Location(s)property ofDBCPConnectionPoolController ServicesKeystore Filename&Truststore Filenameproperties ofStandardRestrictedSSLContextServiceController Services
Questions:
- Is it possible to use Relative Paths in above items?
- Where does the root of relative path point to - nifi installation directory?
- What are best practices for managing paths in flow defitions?
- Any other best practices for making flow definitions portable
EDIT: We're using parameters in Flow Definitions to make it easier to configure per environment. Currently we have a param to indicate Nifi root path. Te motive behind this question is to check if this param can eliminated entirely by using relative paths.
...ANSWER
Answered 2021-Jun-02 at 15:23You can use relative paths if the property supports expression language. In your case script path, database driver locations support; however, keystore and truststore paths do not.
For example, I am using relative script path for my ExecuteScripts to run them on macos , windows as well as linux with the same path
Suppose your Nifi root is opt/nifi/nifi-current and you have groovy folder in the root and a FlowHandler.groovyin it. So your script path would be like below
QUESTION
According to the documentation, one prerequisite for using NiFi CLI against a secured NiFi instance is to configure proxy user request for the node's identity (e.g. CN=localhost, OU=NIFI).
I understand how to configure it through the NiFi web user interface. However, is it possible to do the same through scripting?
The reason is that I am working on a NiFi installation script, and I would like to install NiFi and configure users/policies in one go if it is possible.
Thank you!
...ANSWER
Answered 2021-Jun-02 at 20:53If you are trying to use NiFi CLI to setup NiFi itself, then you're only real option is for NiFi CLI to perform operations as the Initial Admin identity.
It then depends how NiFi is configured to perform authentication, meaning where is your initial admin identity coming from. Is it a DN from a client cert, a user in LDAP, a kerberos principal, etc?
If it is a client cert, then you can just configure NiFi CLI to use that cert and it should work.
If it is a LDAP user, then you need to have NiFi CLI use one of NiFi's server certs to proxy the LDAP user.
Both of these scenarios are shown in the docs:
https://nifi.apache.org/docs/nifi-docs/html/toolkit-guide.html#security-configuration
QUESTION
In our dev enviroment in nifi we have a few logging options, for capturing debugging information if needed, which we usually want to have turned off, but which stay ready to be turned on if we need to debug something.
I'm looking for a good way to toggle on and off this debugging. We can easily disable the processors, but then files build up in the queue behind them.
What is the cleanest way to toggle off not just the processor but the queue in front of it so nothing is routed unless we want to debug?
Ideally I'd prefer a way to turn on and off a few different logging processors spread out across our flows with a single toggle if such an option can be managed.
...ANSWER
Answered 2021-Jun-02 at 20:46You can create a process group variable, or use parameters, to create a debug flag. Then put a RouteOnAttribute processor before each logging processor and making a routing decision based on the debug flag. If it is unmatched then auto-terminate the relationship so the flow files are just dropped.
QUESTION
Thought to post this because it might help someone. I couldn't find Kubernetes NiFi setup without helm package, so I have prepared the below configuration YAML for Kubernetes NiFi Cluster setup.
Here's the link for Zookeeper Cluster setup in AKS
...ANSWER
Answered 2021-May-19 at 05:53Please comment if you see any issues anywhere in the configuration or if you would like to provide any suggestions. Increase disk storage configuration according to your usage.
QUESTION
In Nifi, I have the following JSON:
...ANSWER
Answered 2021-May-19 at 19:48You can add a JoltTransformJSON processor with a shift type transformation such as
QUESTION
I am getting the below error in NIFI when I call an API which is hosted in another server. (source and destination are Linux servers)
I need to add the server certificates in my current server to resolve this issue.
Can anyone provide the step by step commands that I need to execute to resolve this issue?
Nifi Log:
...ANSWER
Answered 2021-May-12 at 16:48The InvokeHTTP in NiFi is a client of your API. This means that the InvokeHTTP needs to be able to trust your remote server to ensure it's not connecting to a malicious service. To do this, we need to add the Certificate Authority/Root Authority of the remote service to InvokeHTTP's truststore. The CA required will be shown in the 'Issuer' fields of the service's server certificate.
To get the CA, you can follow this blog: https://daniel.haxx.se/blog/2018/11/07/get-the-ca-cert-for-curl/, and retrieve the CA into a pem file with:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install nifi
Run a full NiFi build (see above for instructions). Then from the minifi/ subdirectory, execute mvn -P docker clean install. This will run the full build, create a docker image based on it, and run docker-compose integration tests. After it completes successfully, you should have an apacheminifi:${minifi.version} image that can be started with the following command (replacing ${minifi.version} with the current maven version of your branch):
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page
