feat(vertexai): add google_vertex_ai_online_evaluator resource

mmv1/products/vertexai/OnlineEvaluator.yaml

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+# Copyright 2026 Google Inc.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+---
+name: OnlineEvaluator
+description: Description
+base_url: projects/{{project}}/locations/{{region}}/onlineEvaluators
+min_version: beta
+self_link: 'projects/{{project}}/locations/{{region}}/onlineEvaluators/{{name}}'
+create_url: projects/{{project}}/locations/{{region}}/onlineEvaluators
+update_mask: true
+update_verb: PATCH
+timeouts:
+  insert_minutes: 20
+  update_minutes: 20
+  delete_minutes: 60
+async:
+  type: 'OpAsync'
+  operation:
+    base_url: '{{op_id}}'
+  actions:
+    - create
+    - update
+    - delete
+  result:
+    resource_inside_response: true
+autogen_status: T25saW5lRXZhbHVhdG9y
+parameters:
+  - name: region
+    type: String
+    required: true
+    description: Resource ID segment making up resource `name`. It identifies the resource
+      within its parent collection as described in https://google.aip.dev/122.
+    immutable: true
+    url_param_only: true
+properties:
+  - name: agentResource
+    type: String
+    required: true
+    description: 'The name of the agent that the OnlineEvaluator evaluates periodically.
+      This value is used to filter the traces with a matching cloud.resource_id
+      and link the evaluation results with relevant dashboards/UIs.
+      This field is immutable. Once set, it cannot be changed.'
+    immutable: true
+  - name: cloudObservability
+    type: NestedObject
+    description: 'Data source for the OnlineEvaluator, based on Google Cloud Observability
+      stack (Cloud Trace & Cloud Logging).'
+    properties:
+      - name: logView
+        type: String
+        description: 'Optional log view that will be used to query logs.
+          If empty, the `_Default` view will be used.'
+        immutable: true
+      - name: openTelemetry
+        type: NestedObject
+        description: Configuration for data source following OpenTelemetry.
+        immutable: true
+        ignore_read: true
+        properties:
+          - name: semconvVersion
+            type: String
+            required: true
+            description: 'Defines which version OTel Semantic Convention the data follows.
+              Can be "1.39.0" or newer.'
+            immutable: true
+      - name: traceScope
+        type: NestedObject
+        description: 'If chosen, the online evaluator will evaluate single traces matching
+          specified `filter`.'
+        immutable: true
+        properties:
+          - name: filter
+            type: Array
+            description: 'A list of predicates to filter traces. Multiple predicates are
+              combined using AND.
+              The maximum number of predicates is 10.'
+            immutable: true
+            item_type:
+              type: NestedObject
+              properties:
+                - name: duration
+                  type: NestedObject
+                  description: Defines a predicate for filtering based on a numeric value.
+                  immutable: true
+                  properties:
+                    - name: comparisonOperator
+                      type: String
+                      required: true
+                      description: 'The comparison operator to apply.
+                        Possible values:
+                        LESS
+                        LESS_OR_EQUAL
+                        EQUAL
+                        NOT_EQUAL
+                        GREATER_OR_EQUAL
+                        GREATER'
+                      immutable: true
+                    - name: value
+                      type: Double
+                      required: true
+                      description: The value to compare against.
+                      immutable: true
+                - name: totalTokenUsage
+                  type: NestedObject
+                  description: Defines a predicate for filtering based on a numeric value.
+                  immutable: true
+                  properties:
+                    - name: comparisonOperator
+                      type: String
+                      required: true
+                      description: 'The comparison operator to apply.
+                        Possible values:
+                        LESS
+                        LESS_OR_EQUAL
+                        EQUAL
+                        NOT_EQUAL
+                        GREATER_OR_EQUAL
+                        GREATER'
+                      immutable: true
+                    - name: value
+                      type: Double
+                      required: true
+                      description: The value to compare against.
+                      immutable: true
+      - name: traceView
+        type: String
+        description: 'Optional trace view that will be used to query traces.
+          If empty, the `_Default` view will be used.
+          NOTE: This field is not supported yet and will be ignored if set.'
+        immutable: true
+    required: true
+    immutable: true
+  - name: config
+    type: NestedObject
+    required: true
+    description: 'Configuration for sampling behavior of the OnlineEvaluator.
+      The OnlineEvaluator runs at a fixed interval of 10 minutes.'
+    properties:
+      - name: maxEvaluatedSamplesPerRun
+        type: String
+        description: 'The maximum number of evaluations to perform per run.
+          If set to 0, the number is unbounded.'
+      - name: randomSampling
+        type: NestedObject
+        description: Configuration for random sampling.
+        properties:
+          - name: percentage
+            type: Integer
+            required: true
+            description: 'The percentage of traces to sample for evaluation.
+              Must be an integer between `1` and `100`.'
+  - name: createTime
+    type: String
+    description: Timestamp when the OnlineEvaluator was created.
+    output: true
+  - name: displayName
+    type: String
+    description: 'Human-readable name for the `OnlineEvaluator`.
+      The name doesn''t have to be unique.
+      The name can consist of any UTF-8 characters. The maximum length is `63`
+      characters. If the display name exceeds max characters, an
+      `INVALID_ARGUMENT` error is returned.'
+  - name: metricSources
+    type: Array
+    required: true
+    immutable: true
+    description: 'A list of metric sources to be used for evaluating samples.
+      At least one MetricSource must be provided.
+      Right now, only predefined metrics and registered metrics are supported.
+      Every registered metric must have `display_name` (or `title`) and
+      `score_range` defined. Otherwise, the evaluations will fail.
+      The maximum number of `metric_sources` is 25.'
+    item_type:
+      type: NestedObject
+      properties:
+        # TODO: Support structured metric config instead of JSON string.
+        - name: metric
+          type: String
+          description: |
+            Inline metric config. Provide this field as a JSON-formatted string.
+            Suggested predefined metricSpecName values:
+            - `final_response_quality_v1`
+            - `tool_use_quality_v1`
+            - `hallucination_v1`
+            - `safety_v1`
+            - `multi_turn_task_success_v1`
+            - `multi_turn_tool_use_quality_v1`
+            - `multi_turn_trajectory_quality_v1`
+          immutable: true
+          custom_expand: 'templates/terraform/custom_expand/json_value.tmpl'
+          custom_flatten: 'templates/terraform/custom_flatten/json_schema.tmpl'
+        - name: metricResourceName
+          type: String
+          description: Resource name for registered metric.
+          immutable: true
+  - name: name
+    type: String
+    description: 'Identifier. The resource name of the OnlineEvaluator.
+      Format: projects/{project}/locations/{region}/onlineEvaluators/{id}.'
+    output: true
+    custom_flatten: 'templates/terraform/custom_flatten/name_from_self_link.tmpl'
+  - name: state
+    type: String
+    description: 'The state of the OnlineEvaluator.
+      Possible values:
+      ACTIVE
+      SUSPENDED
+      FAILED
+      WARNING'
+    output: true
+  - name: stateDetails
+    type: Array
+    description: 'Contains additional information about the state of the OnlineEvaluator.
+      This is used to provide more details in the event of a failure.'
+    output: true
+    item_type:
+      type: NestedObject
+      output: true
+      properties:
+        - name: message
+          type: String
+          description: Human-readable message describing the state of the OnlineEvaluator.
+          output: true
+  - name: updateTime
+    type: String
+    description: Timestamp when the OnlineEvaluator was last updated.
+    output: true
+
+examples:
+  - name: 'vertex_ai_online_evaluator_basic'
+    primary_resource_id: 'evaluator'
+    vars:
+      evaluator_name: 'my-evaluator'
+      engine_name: 'my-engine'

mmv1/templates/terraform/examples/vertex_ai_online_evaluator_basic.tf.tmpl

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+resource "google_vertex_ai_reasoning_engine" "engine" {
+  provider     = google-beta
+  display_name = "{{index $.Vars "engine_name"}}"
+  description  = "A basic reasoning engine"
+  labels       = {
+    "key" = "value"
+  }
+  region       = "us-central1"
+}
+
+resource "google_vertex_ai_online_evaluator" "evaluator" {
+  provider       = google-beta
+  region         = "us-central1"
+  display_name   = "{{index $.Vars "evaluator_name"}}"
+
+  agent_resource = google_vertex_ai_reasoning_engine.engine.id
+
+  config {
+    max_evaluated_samples_per_run = "100"
+    random_sampling {
+      percentage = 10
+    }
+  }
+
+  metric_sources {
+    metric = jsonencode({
+      "predefinedMetricSpec" = {
+        "metricSpecName" = "safety_v1"
+      }
+    })
+  }
+
+  metric_sources {
+    metric = jsonencode({
+      "predefinedMetricSpec" = {
+        "metricSpecName" = "hallucination_v1"
+      }
+    })
+  }
+
+  metric_sources {
+    metric = jsonencode({
+      "predefinedMetricSpec" = {
+        "metricSpecName" = "final_response_quality_v1"
+      }
+    })
+  }
+
+  metric_sources {
+    metric = jsonencode({
+      "predefinedMetricSpec" = {
+        "metricSpecName" = "tool_use_quality_v1"
+      }
+    })
+  }
+
+  cloud_observability {
+    open_telemetry {
+      semconv_version = "1.39.0"
+    }
+
+    trace_scope {
+      filter {
+        duration {
+          comparison_operator = "GREATER"
+          value               = 0
+        }
+      }
+    }
+  }
+}