In-process editing of pipeline

[akdor1154]

I am imagining something like the workflow Ultimate Plumber (https://github.com/akavel/up) provides.

n.b. None of these issues are demands or even requests! It's more I am wondering about things I might want to hack on, and soliciting feedback on whether you would welcome them or not before I get started.

[rcoh]

oh that's quite interesting. Did you try using angle-grinder with ultimate plumber? I suspect it might "Just work"

[tstack]

I'd like to see this as well, it's part of the motivation for trying to improve error messages. I was also expecting to print out a preview of the records generated by the valid parts of the angle-grinder query. The idea being that it would be easier to write the rest of the query if you can look at the preview. For example, when trying to construct this query -- * | parse "Hello, -- we should print out the first 5-10 log lines and highlight the parts of the lines that match "Hello, ". That would allow the to see whether the match was working or not. Another example would be typing a where clause or anything else that takes an expression. If we printed out a few of the record values, it would be easier for the person to write the rest of the expression.