feat(insights): add has_insights_xx span project flags (#72904)

Adds `has_insights_xx` flags for each insight module to track whether a
project has sent spans for that insight module.

These flags are used to determine whether to show the empty state screen
when the user visits an insight module. Our current approach involves
scanning through the past 90 days of metrics data to check for any
matching spans, which is extremely inefficient.

With these new project flags, we can avoid a table scan and improve
insight module page load times by 2-3 seconds.

Author: KevinL10

migrations_lockfile.txt

@@ -9,5 +9,5 @@ feedback: 0004_index_together
 hybridcloud: 0016_add_control_cacheversion
 nodestore: 0002_nodestore_no_dictfield
 replays: 0004_index_together
-sentry: 0730_add_subscription_fk_to_incident
+sentry: 0731_add_insight_project_flags
 social_auth: 0002_default_auto_field

src/sentry/migrations/0731_add_insight_project_flags.py

@@ -0,0 +1,66 @@
+# Generated by Django 5.0.6 on 2024-06-17 21:29
+
+from django.db import migrations
+
+import bitfield.models
+from sentry.new_migrations.migrations import CheckedMigration
+
+
+class Migration(CheckedMigration):
+    # This flag is used to mark that a migration shouldn't be automatically run in production.
+    # This should only be used for operations where it's safe to run the migration after your
+    # code has deployed. So this should not be used for most operations that alter the schema
+    # of a table.
+    # Here are some things that make sense to mark as post deployment:
+    # - Large data migrations. Typically we want these to be run manually so that they can be
+    #   monitored and not block the deploy for a long period of time while they run.
+    # - Adding indexes to large tables. Since this can take a long time, we'd generally prefer to
+    #   run this outside deployments so that we don't block them. Note that while adding an index
+    #   is a schema change, it's completely safe to run the operation after the code has deployed.
+    # Once deployed, run these manually via: https://develop.sentry.dev/database-migrations/#migration-deployment
+
+    is_post_deployment = False
+
+    dependencies = [
+        ("sentry", "0730_add_subscription_fk_to_incident"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="project",
+            name="flags",
+            field=bitfield.models.BitField(
+                [
+                    "has_releases",
+                    "has_issue_alerts_targeting",
+                    "has_transactions",
+                    "has_alert_filters",
+                    "has_sessions",
+                    "has_profiles",
+                    "has_replays",
+                    "has_feedbacks",
+                    "has_new_feedbacks",
+                    "spike_protection_error_currently_active",
+                    "spike_protection_transaction_currently_active",
+                    "spike_protection_attachment_currently_active",
+                    "has_minified_stack_trace",
+                    "has_cron_monitors",
+                    "has_cron_checkins",
+                    "has_sourcemaps",
+                    "has_custom_metrics",
+                    "has_high_priority_alerts",
+                    "has_insights_http",
+                    "has_insights_db",
+                    "has_insights_assets",
+                    "has_insights_app_start",
+                    "has_insights_screen_load",
+                    "has_insights_vitals",
+                    "has_insights_caches",
+                    "has_insights_queues",
+                    "has_insights_llm_monitoring",
+                ],
+                default=10,
+                null=True,
+            ),
+        ),
+    ]

src/sentry/models/project.py

@@ -306,6 +306,33 @@ class flags(TypedClassBitField):
         # This Project has enough issue volume to use high priority alerts
         has_high_priority_alerts: bool
 
+        # This Project has sent insight request spans
+        has_insights_http: bool
+
+        # This Project has sent insight db spans
+        has_insights_db: bool
+
+        # This Project has sent insight assets spans
+        has_insights_assets: bool
+
+        # This Project has sent insight app starts spans
+        has_insights_app_start: bool
+
+        # This Project has sent insight screen load spans
+        has_insights_screen_load: bool
+
+        # This Project has sent insight vitals spans
+        has_insights_vitals: bool
+
+        # This Project has sent insight caches spans
+        has_insights_caches: bool
+
+        # This Project has sent insight queues spans
+        has_insights_queues: bool
+
+        # This Project has sent insight llm monitoring spans
+        has_insights_llm_monitoring: bool
+
         bitfield_default = 10
         bitfield_null = True