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feat(encoding): encode usize and isize#282

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mxinden merged 2 commits intoprometheus:masterfrom
jalil-salame:add-usize-isize-encode-impls
Mar 31, 2026
Merged

feat(encoding): encode usize and isize#282
mxinden merged 2 commits intoprometheus:masterfrom
jalil-salame:add-usize-isize-encode-impls

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Implement EncodeGaugeValue for usize and isize and EncodeCounterValue for usize. This is very straight forward and the argument is the same as the one for EncodeGaugeValue for u64; if you don't do this the user code will get littered with as i64/as u64.

Since these conversions are infallible for 32-bit platforms, and have the same issues as the current u64 impl for 64-bit platforms, I don't think there is any problem with adding them.

Implement `EncodeGaugeValue` for `usize` and `isize`, and
`EncodeCounterValue` for `usize`. This is very straight forward and the
argument is the same as the one for `EncodeGaugeValue for u64`; if you
don't do this the user code will get littered with `as i64`/`as u64`.

Since these conversions are infallible for `32-bit` platforms, and have
the same issues as the current `u64` impl for `64-bit` platforms, I
don't think there is any problem with adding them.

Signed-off-by: Jalil David Salamé Messina <jalil.salame@gmail.com>
@jalil-salame jalil-salame force-pushed the add-usize-isize-encode-impls branch from cdd1bd2 to ca8decb Compare September 2, 2025 13:19
Signed-off-by: Max Inden <mail@max-inden.de>
@mxinden mxinden added this pull request to the merge queue Mar 31, 2026
Merged via the queue into prometheus:master with commit 276bb9c Mar 31, 2026
10 checks passed
eleboucher pushed a commit to eleboucher/towonel that referenced this pull request Apr 18, 2026
This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [prometheus-client](https://github.com/prometheus/client_rust) | workspace.dependencies | minor | `0.22` → `0.24` |

---

### Release Notes

<details>
<summary>prometheus/client_rust (prometheus-client)</summary>

### [`v0.24.1`](https://github.com/prometheus/client_rust/blob/HEAD/CHANGELOG.md#0241)

[Compare Source](prometheus/client_rust@v0.24.0...v0.24.1)

##### Added

- `EncodeGaugeValue` is implemented for `usize` and `isize`, and
  `EncodeCounterValue` is implemented for `usize`. See [PR 282].

##### Fixed

- `EncodeGaugeValue`, `EncodeCounterValue` and `EncodeExemplarValue` now use
  fewer `as` casts in their implementation. This caught an issue where
  `EncodeGaugeValue` would not error when encoding some `u64`s that don't fit
  in a `i64`. See [PR 281].
- Filter out empty metric families, to match the go client. See [PR 279].
- `Histogram` now exposes `count()` and `sum()` methods when the `test-util`
  feature is enabled. See [PR 242].
- `Family` now exposes a `contains()` method when the `test-util` feature
  is enabled. See [PR 245].
- `Family` now exposes `len()` and `is_empty()` methods when the
  `test-util` feature is enabled. See [PR 246].

[PR 279]: prometheus/client_rust#279

[PR 281]: prometheus/client_rust#281

[PR 242]: prometheus/client_rust#242

[PR 245]: prometheus/client_rust#245

[PR 246]: prometheus/client_rust#246

[PR 281]: prometheus/client_rust#281

[PR 282]: prometheus/client_rust#282

### [`v0.24.0`](https://github.com/prometheus/client_rust/blob/HEAD/CHANGELOG.md#0240)

[Compare Source](prometheus/client_rust@v0.23.1...v0.24.0)

##### Added

- `EncodeLabelSet` is now implemented for tuples `(A: EncodeLabelSet, B: EncodeLabelSet)`.
  See [PR 257].

- `Family::get_or_create_owned` can access a metric in a labeled family. This
  method avoids the risk of runtime deadlocks at the expense of creating an
  owned type. See [PR 244].

- `impl<T: Collector> Collector for std::sync::Arc<T>`.
  See [PR 273].

[PR 244]: prometheus/client_rust#244

[PR 257]: prometheus/client_rust#257

[PR 273]: prometheus/client_rust#273

##### Changed

- `EncodeLabelSet::encode()` now accepts a mutable reference to its encoder parameter.
- Exemplar timestamps can now be passed, which are required for `convert_classic_histograms_to_nhcb: true`
  in Prometheus scraping. See [PR 276].

[PR 276]: prometheus/client_rust#276

### [`v0.23.1`](https://github.com/prometheus/client_rust/blob/HEAD/CHANGELOG.md#0231)

[Compare Source](prometheus/client_rust@v0.23.0...v0.23.1)

##### Changed

- `Histogram::new` now accepts an `IntoIterator` argument, rather than an `Iterator`.
  See [PR 243].

[PR 243]: prometheus/client_rust#243

### [`v0.23.0`](https://github.com/prometheus/client_rust/blob/HEAD/CHANGELOG.md#0230)

[Compare Source](prometheus/client_rust@v0.22.3...v0.23.0)

##### Changed

- `ConstCounter::new` now requires specifying the type of literal arguments, like this: `ConstCounter::new(42u64);`.
  See [PR 173].

- Update `prost` dependencies to `v0.12`.
  See [PR 198].

- Implement `Atomic<u64>` for `AtomicU64` for gauges.
  See [PR 226].

- Implement `EnableLabelValue` for `bool`.
  See [PR 237]

[PR 173]: prometheus/client_rust#173

[PR 198]: prometheus/client_rust#198

[PR 226]: prometheus/client_rust#226

[PR 237]: prometheus/client_rust#237

##### Added

- Support `i32`/`f32` for `Gauge` and `u32`/`f32` for `Counter`/`CounterWithExemplar`.
  See [PR 173] and [PR 216].

- Supoort `Arc<String>` for `EncodeLabelValue`.
  See [PR 217].

- Add `histogram::exponential_buckets_range`.
  See [PR 233].

- Added `get` method to `Family`.
  See [PR 234].

[PR 173]: prometheus/client_rust#173

[PR 216]: prometheus/client_rust#216

[PR 217]: prometheus/client_rust#217

[PR 233]: prometheus/client_rust#233

[PR 234]: prometheus/client_rust#234

##### Fixed

- Don't prepend `,` when encoding empty family label set.
  See [PR 175].

[PR 175]: prometheus/client_rust#175

</details>

---

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---

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---

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Reviewed-on: https://git.erwanleboucher.dev/eleboucher/towonel/pulls/7
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