This replaces the start_time, end_time, and previous_end_time columns on
the session_state table with a time range column that records when the
state was active. This allowed for dropping several constraints on the
session_state table that were used to ensure that states for a session
did not overlap. Instead this can be ensured with a single exclusion
constraint. By reducing the number of constraints, it improves the
performance for a number of queries involved with session state. Most
notably when resolving delete cascades of resources related to sessions,
such as targets, where as part of the delete transaction large numbers
of sessions get canceled. Similarly, when sessions get deleted, and the
corresponding session_state rows are deleted, these constraints all must
be checked during the transaction.
The domain layer continues to expose StartTime and EndTime fields on
session.State. However it drops PreviousEndTime, which was never used by
anything calling the domain layer.
See:
https://www.postgresql.org/docs/current/ddl-constraints.html#DDL-CONSTRAINTS-EXCLUSIONhttps://www.postgresql.org/docs/current/rangetypes.html
* Adding explicit MPL license for sub-package.
This directory and its subdirectories (packages) contain files licensed with the MPLv2 `LICENSE` file in this directory and are intentionally licensed separately from the BSL `LICENSE` file at the root of this repository.
* Adding explicit MPL license for sub-package
This directory and its subdirectories (packages) contain files licensed with the MPLv2 `LICENSE` file in this directory and are intentionally licensed separately from the BSL `LICENSE` file at the root of this repository.
* Updating the license from MPL to Business Source License
Going forward, this project will be licensed under the Business Source License v1.1. Please see our blog post for more details at https://hashi.co/bsl-blog, FAQ at www.hashicorp.com/licensing-faq, and details of the license at www.hashicorp.com/bsl.
* Update copyright file headers to BUS-1.1
* Rerun make gen
This will pick up the last of the license changes
* Revert "Rerun make gen"
This reverts commit dbe0968bffd92745d8663c6940debae098395a6b.
* Remove copywrite from generation script
The current version of copywrite is not sophisticated enough
to only apply the copywrite changes to certain subdirectories,
so to avoid accidentally relicensing our api and sdk modules,
we will stop running the copywrite script until such time
that it can do the right thing.
* License protobuf API as MPL
The protobuf API files are used to generate the SDK,
since we want the SDK to be MPL, the protobuf files
must also be MPL. This extends to all protobuf files
whose sources end up in the SDK directory, including:
- internal/proto/controller/api
- internal/proto/controller/custom_options
- internal/proto/plugin
It also includes the generated service directory in
internal/gen/controller/api/services, since they are
generated from the protobuf sources used for the SDK.
* Change website license file name
This makes the naming scheme consistent with the rest
of the repository.
* Add note on licensing to README
* Set copywrite license to BUSL
* Revert "Add note on licensing to README"
This reverts commit 4d865a91a7a4f11605f0dc4609355d7e3c3cfffe.
---------
Co-authored-by: hashicorp-copywrite[bot] <110428419+hashicorp-copywrite[bot]@users.noreply.github.com>
Co-authored-by: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
When applying the limit and order by, the where clause also needs to be
applied to yield the correct results. This can be seen with an example.
Assuming a data set where there are 100 sessions, with 10 sessions
belonging to a user with id `u_user1` and 90 sessions belonging to
`u_user2`. If the constructed query is like:
select *
from
(select public_id from session limit 10) s,
session_list ss
where
s.public_id = ss.public_id
and s.user_id = 'u_user1'
order by create_time asc;
The initial sub-query with the limit could return sessions only
belonging to `u_user2`, then it would apply the where clause and exclude
all of the rows.
Instead if the query is:
with
session_ids as (
select public_id
from sessions as s
where
s.user_id = 'u_user1'
order by create_time asc
limit 10
)
select *
from session_list
where
session_list.public_id in (select * from session_ids)
order by create_time asc;
The CTE applies the where clause ensuring that only sessions for
`u_user1` are used for the final select from the view.
Note that the CTE is use primarily for readability.
This also adds an index on `session (create_time)` to aide the query
planner in performing the order by.
Timothy Messier
Johan Brandhorst-Satzkorn
hashicorp-copywrite[bot]andJohan Brandhorst-Satzkorn
Michael Gaffney
irenarindos