update CHANGELOG

Author: tazend

CHANGELOG.md

@@ -7,12 +7,67 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased on the [23.11.x](https://github.com/PySlurm/pyslurm/tree/23.11.x) branch
 
+### Added
+
 - New Classes to interact with Database Associations (WIP)
     - `pyslurm.db.Association`
     - `pyslurm.db.Associations`
 - New Classes to interact with Database QoS (WIP)
     - `pyslurm.db.QualityOfService`
     - `pyslurm.db.QualitiesOfService`
+- Added `stats` attribute to both `pyslurm.Job`, `pyslurm.Jobs` and
+  `pyslurm.db.Jobs`
+- Added `pids` attribute to `pyslurm.Job` which contains Process-IDs of the Job
+  organized by node-name
+- Added `load_stats` method to `pyslurm.Job` and `pyslurm.Jobs` classes.
+  Together with the `stats` and `pids` attributes mentioned above, it is now
+  possible to fetch live statistics (like sstat)
+- Switch to link with `libslurmfull.so` instead of `libslurm.so`<br>
+  This change really has no impact from a user perspective. Everything will
+  keep working the same, except that Slurms more internal library
+  `libslurmfull.so` is linked with (which is located alongside the plugins
+  inside the `slurm` directory, which itself is next to `libslurm.so`)<br>
+  Why the change? Because it will likely make development easier. It allows
+  access to more functions that might be needed in some places, without
+  completely having to implement them on our own. Implementing the
+  live-statistics feature, so basically `sstat`, is for example not possible
+  with `libslurm.so` <br>
+  You can keep providing the directory where `libslurm.so` resided as
+  `$SLURM_LIB_DIR` to pyslurm, and it will automatically find `libslurmfull.so`
+  from there.
+
+### Fixed
+
+- Fixed `total_cpu_time`, `system_cpu_time` and `user_cpu_time` not getting
+  calculated correctly for Job statistics
+- Actually make sure that `avg_cpu_time`, `min_cpu_time`, `total_cpu_time`,
+  `system_cpu_time` and `user_cpu_time` are integers, not float.
+
+### Changed
+
+- Breaking: rename `cpu_time` to `elapsed_cpu_time` in `pyslurm.Job` and
+  `pyslurm.Jobs` classes
+- Breaking: removed the following attributes from `pyslurm.db.Jobs`:<br>
+    * `consumed_energy`
+    * `disk_read`
+    * `disk_write`
+    * `page_faults`
+    * `resident_memory`
+    * `virtual_memory`
+    * `elapsed_cpu_time`
+    * `total_cpu_time`
+    * `user_cpu_time`
+    * `system_cpu_time`
+- The removed attributes above are now all available within the `stats`
+  attribute, which is of type `pyslurm.db.JobStatistics`
+- Renamed the original class of `pyslurm.db.JobStatistics` to
+  `pyslurm.db.JobStepStatistics`.<br>
+  All this class contains is really mostly applicable only to Steps, but
+  doesn't fully apply at the Job Level.<br>
+  Therefore, the new `pyslurm.db.JobStatistics` class only contains all
+  statistics that make sense at the Job-level.
+- return `1` as a value for the `cpus` attribute in `pyslurm.db.Job` when there
+  is no value set from Slurm's side.
 
 ## [23.11.0](https://github.com/PySlurm/pyslurm/releases/tag/v23.11.0) - 2024-01-27