This refactors everything to generate and use a flux AST when
transpiling an influxql query. This also updates the spectests so they
use flux instead of writing out the AST and compare the resulting
AST's.
I did this with a dumb editor macro, so some comments changed too.
Also rename root package from platform to influxdb.
In interest of minimizing risk, anyone importing the root package has
now aliased it to "platform" so that no changes beyond imports were
necessary in those files.
Lastly, replace the old platform module to local path /dev/null so that
nobody can accidentally reintroduce a platform dependency while
migrating platform code to influxdb.
The table interface was modified to expose the arrow buffers. The
storage table has now been converted to use this interface with the same
fixes so that it exposes arrow buffers.
The influxql package has also been updated to use the `DoArrow` method
from the `flux.Table` interface.
* Add default column to databases to support `show retention policies`
* add unit test for show retention policies
* update transpiler readme for show databases, show retention policies
We reorganized the functions in flux to have the structure:
/functions
/inputs
/transformations
/outputs
this PR catches up platform to work with the new package layout.
As a separate refactoring issue, we should discuss:
from(bucket: ) should migrate from flux --> platform
to_http and to_kafka should migrate from platform --> flux
It creates a simple client that follows the QueryService interface and
uses the `influxql.Compiler` type to determine where the query should be
routed to and to return the query as a `flux.ResultIterator`.
This will be useful for replaying transpiler queries against influxdb
1.x servers to verify correctness.
The transpiler will normalize the `_time` column by dropping any
existing time column and then duplicating `_start` when the query is an
aggregate type.
This works for the selectors because they did not normalize their
`_time` column at all and, while the aggregates did normalize their
`_time` column, we have made the decision to remove that functionality
and have aggregates not set a `_time` column at all.
Instead of generating multiple cursors, a pivot is used to join fields
within the same series.
This should be easier than generating a new cursor for everything.
WIP: saving state reword
feat(query/influxql): implement query.ResultIterator directly on response
review(influxql): add ResponseIterator that implement query.ResultIterator
review(influxql): update code is response to review
Jonathan A. Sternberg
Lorenzo Affetti
Nathaniel Cook
Mark Rushakoff
Adam
Christopher M. Wolff
Edd Robinson
Ben Johnson
jlapacik
Mark Rushakoff
Chris Goller
Leonardo Di Donato
Stuart Carnie
Michael Desa
Adam Perlin