Use global refs to io direction attributes

disk.io.direction and network.io.direction were added to the global
registry, so this commit uses references to those attributes.

docs/system/process-metrics.md

@@ -19,17 +19,17 @@ metrics](/docs/runtime/README.md#metrics).
 
 <!-- toc -->
 
-- [Metric Instruments](#metric-instruments)
-  * [Metric: `process.cpu.time`](#metric-processcputime)
-  * [Metric: `process.cpu.utilization`](#metric-processcpuutilization)
-  * [Metric: `process.memory.usage`](#metric-processmemoryusage)
-  * [Metric: `process.memory.virtual`](#metric-processmemoryvirtual)
-  * [Metric: `process.disk.io`](#metric-processdiskio)
-  * [Metric: `process.network.io`](#metric-processnetworkio)
-  * [Metric: `process.thread.count`](#metric-processthreadcount)
-  * [Metric: `process.open_file_descriptor.count`](#metric-processopen_file_descriptorcount)
-  * [Metric: `process.context_switches`](#metric-processcontext_switches)
-  * [Metric: `process.paging.faults`](#metric-processpagingfaults)
+- [Process Metrics](#process-metrics)
+  - [Metric: `process.cpu.time`](#metric-processcputime)
+  - [Metric: `process.cpu.utilization`](#metric-processcpuutilization)
+  - [Metric: `process.memory.usage`](#metric-processmemoryusage)
+  - [Metric: `process.memory.virtual`](#metric-processmemoryvirtual)
+  - [Metric: `process.disk.io`](#metric-processdiskio)
+  - [Metric: `process.network.io`](#metric-processnetworkio)
+  - [Metric: `process.thread.count`](#metric-processthreadcount)
+  - [Metric: `process.open_file_descriptor.count`](#metric-processopen_file_descriptorcount)
+  - [Metric: `process.context_switches`](#metric-processcontext_switches)
+  - [Metric: `process.paging.faults`](#metric-processpagingfaults)
 
 <!-- tocstop -->
 
@@ -43,7 +43,7 @@ metrics](/docs/runtime/README.md#metrics).
 > * SHOULD introduce a control mechanism to allow users to opt-in to the new
 >   conventions once the migration plan is finalized.
 
-## Metric Instruments
+## Process Metrics
 
 ### Metric: `process.cpu.time`
 
@@ -122,9 +122,9 @@ metrics](/docs/runtime/README.md#metrics).
 <!-- semconv metric.process.disk.io(full) -->
 | Attribute  | Type | Description  | Examples  | Requirement Level |
 |---|---|---|---|---|
-| `process.disk.process.disk.io_direction` | string | The direction of the data transfer for this data point. | `read` | Recommended |
+| [`disk.io.direction`](../attributes-registry/disk.md) | string | The disk IO operation direction. | `read` | Recommended |
 
-`process.disk.process.disk.io_direction` has the following list of well-known values. If one of them applies, then the respective value MUST be used, otherwise a custom value MAY be used.
+`disk.io.direction` MUST be one of the following:
 
 | Value  | Description |
 |---|---|
@@ -143,14 +143,14 @@ metrics](/docs/runtime/README.md#metrics).
 <!-- semconv metric.process.network.io(full) -->
 | Attribute  | Type | Description  | Examples  | Requirement Level |
 |---|---|---|---|---|
-| `process.network.io_direction` | string | The direction of the data transfer for this data point. | `receive` | Recommended |
+| [`network.io.direction`](../attributes-registry/network.md) | string | The network IO operation direction. | `transmit` | Recommended |
 
-`process.network.io_direction` has the following list of well-known values. If one of them applies, then the respective value MUST be used, otherwise a custom value MAY be used.
+`network.io.direction` MUST be one of the following:
 
 | Value  | Description |
 |---|---|
-| `receive` | receive |
 | `transmit` | transmit |
+| `receive` | receive |
 <!-- endsemconv -->
 
 ### Metric: `process.thread.count`
@@ -169,7 +169,7 @@ metrics](/docs/runtime/README.md#metrics).
 <!-- semconv metric.process.open_file_descriptor.count(metric_table) -->
 | Name     | Instrument Type | Unit (UCUM) | Description    |
 | -------- | --------------- | ----------- | -------------- |
-| `process.open_file_descriptors` | UpDownCounter | `{count}` | Number of file descriptors in use by the process. |
+| `process.open_file_descriptor.count` | UpDownCounter | `{count}` | Number of file descriptors in use by the process. |
 <!-- endsemconv -->
 
 <!-- semconv metric.process.open_file_descriptor.count(full) -->

model/metrics/process-metrics.yaml

@@ -92,7 +92,7 @@ groups:
     instrument: counter
     unit: "{count}"
     attributes:
-      - id: process.context_switches.type
+      - id: process.context_switch_type
         brief: "Specifies whether the context switches for this data point were voluntary or involuntary."
         type:
           allow_custom_values: true
@@ -109,7 +109,7 @@ groups:
     instrument: counter
     unit: "{fault}"
     attributes:
-      - id: process.paging.faults.type
+      - id: process.paging.fault_type
         brief: "The type of page fault for this data point. Type `major` is for major/hard page faults, and `minor` is for minor/soft page faults."
         type:
           allow_custom_values: true

proposed_changelog.md

@@ -1,16 +1,16 @@
+# Blah
+
 - BREAKING: Generate process metrics from YAML
   ([#330](https://github.com/open-telemetry/semantic-conventions/pull/330))
   - Rename attributes for `process.cpu.*`
     - `state` to `process.cpu.state`
   - Change attributes for `process.disk.io`
-    - Instead of `direction` use the global `disk.io.direction`
+    - Instead of `direction` use `disk.io.direction` from global registry
   - Change attributes for `process.network.io`
-    - Instead of `direction` use `network.io.direction`
+    - Instead of `direction` use `network.io.direction` from global registry
   - Rename `process.threads` to `process.thread.count`
   - Rename `process.open_file_descriptors` to `process.open_file_descriptor.count`
-  - Rename `process.context_switches` to `process.context_switch.count`
-  - Rename attributes for `process.context_switch.count`
-    - `type` to `process.context_switch.type`
-  - Rename `process.paging.faults` to `process.paging.fault.count`
+  - Rename attributes for `process.context_switches`
+    - `type` to `process.context_switch_type`
   - Rename attributes for `process.paging.faults`
-    - `type` to `process.paging.fault.type`
+    - `type` to `process.paging.fault_type`

proposed_schema_next.yaml

@@ -18,16 +18,16 @@ metrics:
       - process.disk.io
 - rename_attributes:
     attribute_map:
-      type: process.context_switch.type
+      type: process.context_switch_type
     apply_to_metrics:
-      - process.context_switch.count
+      - process.context_switches
 - rename_attributes:
     attribute_map:
       direction: network.io.direction
     apply_to_metrics:
       - process.network.io
 - rename_attributes:
     attribute_map:
-      type: process.paging.fault.type
+      type: process.paging.fault_type
     apply_to_metrics:
-      - process.paging.fault.count
+      - process.paging.faults