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mirror of https://github.com/open-telemetry/opentelemetry-go.git synced 2024-12-16 10:19:23 +02:00
opentelemetry-go/sdk
Tyler Yahn 8e97011ea8
Update Resource (#613)
* Update Resource

When looking at grouping telemetry in an exporter based on the Resource
it is ideal if a map can be make with the key being represented by a
Resource. However, given the Resource is not hashable, this is not
possible.

This add a `String` method that can be used as a map key during
grouping. Additionally, this means the Resource now implements the
`Stringer` interface providing human-readable info when prited.

The internal structure of the Resource is changed. A static slice
containing all key-values in a sorted order replaces the existing map.
Additionally a set of keys is added to accommodate lookup during
`Merge`. Also, the string representation is kept in an internal field so
as to save processing for the `String` method (all fields are assumed to
be static after creation).

The `Attributes` method now returns a sorted slice of the associated
key-values.

The `Merge` method has been updated to support the changed structure of
the Resource.

New tests are added to validate the `String` method.

* Update comment

* Change loop into returned append

* Update key-value less func

Keys are unique in this package, treat them that way.

* Remove unnecessary allocation on empty attributes

* Update `Merge` method

Remove incomplete sorting of merged slices. Instead use the `sort`
package.

Add tests to catch sorting failure identified.

* Apply suggestions from code review

Co-Authored-By: ET <evantorrie@users.noreply.github.com>

* Escape Resource string representation

To ensure uniqueness of the string representation, the key-value content
needs to be escaped.

* Switch to an eager evaluation for the `String` method

* Refactor `Merge` method

Leave optimization to the future and simplify the merge.

* Add AttributeIterator

Include a method for a user of the Resource to iterate over the related
attributes without needed to copy the attributes.

* Fix ineffectual

* Fix lint

* Add licenses

* keys -> keySet for Resource

Co-authored-by: ET <evantorrie@users.noreply.github.com>
Co-authored-by: Rahul Patel <rahulpa@google.com>
2020-04-07 12:15:36 -07:00
..
export prometheus: add histogram support to exporter (#601) 2020-04-01 14:36:37 -07:00
internal Update project License headers and checking (#596) 2020-03-25 14:47:17 -07:00
metric Create a new recorder rather than reuse one for same labels (#610) 2020-04-02 16:51:37 -07:00
resource Update Resource (#613) 2020-04-07 12:15:36 -07:00
trace Process the queue until no data but respect max batch size (#599) 2020-03-27 16:21:20 -07:00
opentelemetry.go Prepare for releasing v0.4.2 (#608) 2020-03-31 12:57:37 -07:00
README.md Trace sdk (#65) 2019-08-02 13:52:55 -07:00