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.
* 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
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.
This commit provides a new join implementation that can join
tables with different group keys. It also implements a strategy
for evicting stale data from the join operation's cache when
it can be determined that a table will no longer be joined.
Currently early table eviction from the buffers of the join occurs
when the left-most group key column of both input streams are equal
and that column is part of the join key.
The now time is stamped by the influxql transpiler and used inside of
the actual query. It will result in more accuracy if we take the
timestamp we have created and send it as part of the spec to queryd
rather than force ourselves to ensure absolute times exist everywhere.
previous versions only supported the first parameter to time() that set the window size. This version supports the second parameter, which shifts the offset a fixed amount from the epoch
* feat(query/influxql): add regex support to transpiler
also added test case to querytest
* Add raw_with_condition test to transpiler unit tests
* add unit tests for regex conditions on raw query
The package contains all of the transpiler specs and allows them to be
put into different files instead of keeping all of the tests in the same
file. They are all Go code so they are type checked rather than being
loaded as JSON from disk.
Additionally, to make it easier for a developer, the tests will report
the exact file and line where the test was created. So rather than
hunting for which file a test is located in, you will get something nice
like the following:
--- FAIL: TestTranspiler/SELECT_count(value)_FROM_db0..cpu_WHERE_host_=_'server01' (0.00s)
testing.go:51: aggregates_with_condition.go:16: unexpected error: unimplemented function: "count"
As can be seen, the test that failed can be found in the
`aggregates_with_condition.go` file at line 16 which is where the test
was created by the `AggregateTest` function and the relevant spec can be
found in that same file.
Jonathan A. Sternberg
Lorenzo Affetti
Nathaniel Cook
Mark Rushakoff
Christopher M. Wolff
Adam
Chris Goller
Leonardo Di Donato
Stuart Carnie
Adam Perlin
jlapacik
Michael Desa