logfire_slo: seed the generated burn-rate alerts' channels at creation

CHANGELOG.md

@@ -1,6 +1,7 @@
 ## Unreleased
 
 FEATURES:
+- Add optional `page_channel_ids` / `ticket_channel_ids` attributes to `logfire_slo` to seed the generated burn-rate alerts' notification channels at creation. Delivery stays alert-owned afterwards; the attributes have no effect on an already-created SLO. Requires a Logfire backend that accepts channel seeding on the public SLO API.
 - Add an experimental `logfire_slo` resource for managing Service Level Objectives. The backing Logfire API is not yet stable, so the resource schema and behavior may change in backwards-incompatible ways.
 - Add an optional `environments` attribute (set of strings) to the `logfire_alert` resource to scope the alert query to specific deployment environments. Omitting it (or setting it empty) keeps the current behavior of evaluating against all environments.
 

docs/resources/slo.md

@@ -20,6 +20,16 @@ resource "logfire_project" "example" {
   name = "example-project"
 }
 
+resource "logfire_channel" "oncall" {
+  name = "oncall-webhook"
+
+  config {
+    type   = "webhook"
+    format = "auto"
+    url    = "https://hooks.example.com/oncall"
+  }
+}
+
 resource "logfire_slo" "example" {
   project_id     = logfire_project.example.id
   scope_value    = "payments-api"
@@ -30,6 +40,11 @@ resource "logfire_slo" "example" {
   target_percent = "99.9"
   rolling_window = "30d"
   environments   = ["prod"]
+
+  # Seed the generated burn-rate alerts' delivery channels (create-time only;
+  # delivery is alert-owned afterwards).
+  page_channel_ids   = [logfire_channel.oncall.id]
+  ticket_channel_ids = [logfire_channel.oncall.id]
 }
 ```
 
@@ -51,8 +66,10 @@ resource "logfire_slo" "example" {
 - `description` (String) SLO description.
 - `environments` (Set of String) Deployment environments the SLO is scoped to. Omit to cover all environments.
 - `metric_aggregation` (String) How a `metrics` SLO aggregates its SLI: `additive` (sum of scalar values, for delta-count metrics), `gauge_fraction` (fraction of samples meeting the condition, for gauges), or `counter_rate` (sum of per-series increases, for cumulative counters). Ignored when `source = "records"`. Defaults to `additive`.
+- `page_channel_ids` (Set of String) Channel IDs seeded onto the SLO's page-severity burn-rate alerts when the SLO is created. Delivery is alert-owned after creation: changing this attribute later updates only the Terraform state, not the existing alerts (edit the alerts' channels instead).
 - `scope_kind` (String) What the SLO is anchored to: a service (`service`) or an LLM provider (`provider`). Defaults to `service`. Changing it forces a new SLO.
 - `source` (String) Whether the SLO ratio is computed over span events (`records`) or metric values (`metrics`). Defaults to `records`.
+- `ticket_channel_ids` (Set of String) Channel IDs seeded onto the SLO's ticket-severity burn-rate alert when the SLO is created. Delivery is alert-owned after creation: changing this attribute later updates only the Terraform state, not the existing alerts (edit the alerts' channels instead).
 
 ### Read-Only
 

examples/resources/logfire_slo/resource.tf

@@ -2,6 +2,16 @@ resource "logfire_project" "example" {
   name = "example-project"
 }
 
+resource "logfire_channel" "oncall" {
+  name = "oncall-webhook"
+
+  config {
+    type   = "webhook"
+    format = "auto"
+    url    = "https://hooks.example.com/oncall"
+  }
+}
+
 resource "logfire_slo" "example" {
   project_id     = logfire_project.example.id
   scope_value    = "payments-api"
@@ -12,4 +22,9 @@ resource "logfire_slo" "example" {
   target_percent = "99.9"
   rolling_window = "30d"
   environments   = ["prod"]
+
+  # Seed the generated burn-rate alerts' delivery channels (create-time only;
+  # delivery is alert-owned afterwards).
+  page_channel_ids   = [logfire_channel.oncall.id]
+  ticket_channel_ids = [logfire_channel.oncall.id]
 }

internal/client/client.go

@@ -1118,6 +1118,10 @@ type SloCreate struct {
 	TargetPercent        string   `json:"target_percent"`
 	RollingWindowSeconds int64    `json:"rolling_window_seconds"`
 	Environments         []string `json:"environments,omitempty"`
+	// Create-time seeds for the generated burn-rate alerts' notification
+	// channels. Delivery is alert-owned after creation and never read back.
+	PageChannelIDs   []string `json:"page_channel_ids,omitempty"`
+	TicketChannelIDs []string `json:"ticket_channel_ids,omitempty"`
 }
 
 type SloUpdate struct {

internal/provider/slo_mapping_test.go

@@ -48,6 +48,9 @@ func TestSloModelToCreate(t *testing.T) {
 		if create.Description != nil || create.Source != nil || create.MetricAggregation != nil || create.Environments != nil {
 			t.Fatalf("expected omitted optionals, got %#v", create)
 		}
+		if create.PageChannelIDs != nil || create.TicketChannelIDs != nil {
+			t.Fatalf("expected omitted channel seeds, got %#v", create)
+		}
 	})
 
 	t.Run("includes optional description, source, metric_aggregation, and environments", func(t *testing.T) {
@@ -81,6 +84,33 @@ func TestSloModelToCreate(t *testing.T) {
 		}
 	})
 
+	t.Run("includes the burn-rate alert channel seeds", func(t *testing.T) {
+		t.Parallel()
+
+		page, diags := types.SetValueFrom(context.Background(), types.StringType, []string{"chan-page"})
+		if diags.HasError() {
+			t.Fatalf("failed to build page channel set: %v", diags)
+		}
+		ticket, diags := types.SetValueFrom(context.Background(), types.StringType, []string{"chan-ticket"})
+		if diags.HasError() {
+			t.Fatalf("failed to build ticket channel set: %v", diags)
+		}
+		m := baseSloModel()
+		m.PageChannelIDs = page
+		m.TicketChannelIDs = ticket
+
+		create, gotDiags := sloModelToCreate(context.Background(), &m)
+		if gotDiags.HasError() {
+			t.Fatalf("unexpected diagnostics: %v", gotDiags)
+		}
+		if len(create.PageChannelIDs) != 1 || create.PageChannelIDs[0] != "chan-page" {
+			t.Fatalf("unexpected page channel seeds: %#v", create.PageChannelIDs)
+		}
+		if len(create.TicketChannelIDs) != 1 || create.TicketChannelIDs[0] != "chan-ticket" {
+			t.Fatalf("unexpected ticket channel seeds: %#v", create.TicketChannelIDs)
+		}
+	})
+
 	t.Run("rejects out-of-range windows", func(t *testing.T) {
 		t.Parallel()
 
@@ -133,6 +163,34 @@ func TestSloReadToModel(t *testing.T) {
 		if !m.Description.IsNull() {
 			t.Fatalf("expected null description, got %v", m.Description)
 		}
+		// Fresh models (import) get a typed null; the API never returns the seeds.
+		if !m.PageChannelIDs.IsNull() || m.PageChannelIDs.ElementType(context.Background()) == nil {
+			t.Fatalf("expected typed-null page channel seeds, got %v", m.PageChannelIDs)
+		}
+		if !m.TicketChannelIDs.IsNull() || m.TicketChannelIDs.ElementType(context.Background()) == nil {
+			t.Fatalf("expected typed-null ticket channel seeds, got %v", m.TicketChannelIDs)
+		}
+	})
+
+	t.Run("preserves configured channel seeds the API does not return", func(t *testing.T) {
+		t.Parallel()
+
+		page, diags := types.SetValueFrom(context.Background(), types.StringType, []string{"chan-page"})
+		if diags.HasError() {
+			t.Fatalf("failed to build page channel set: %v", diags)
+		}
+		m := baseSloModel()
+		m.PageChannelIDs = page
+		if diags := sloReadToModel(context.Background(), sloRead(), &m); diags != nil && diags.HasError() {
+			t.Fatalf("unexpected diagnostics: %v", diags)
+		}
+		var ids []string
+		if diags := m.PageChannelIDs.ElementsAs(context.Background(), &ids, false); diags.HasError() {
+			t.Fatalf("unexpected diagnostics: %v", diags)
+		}
+		if len(ids) != 1 || ids[0] != "chan-page" {
+			t.Fatalf("unexpected page channel seeds: %#v", ids)
+		}
 	})
 
 	t.Run("replaces values when the API disagrees", func(t *testing.T) {

internal/provider/slo_resource.go

@@ -50,6 +50,8 @@ type SloModel struct {
 	TargetPercent     types.String `tfsdk:"target_percent"`
 	RollingWindow     types.String `tfsdk:"rolling_window"`
 	Environments      types.Set    `tfsdk:"environments"`
+	PageChannelIDs    types.Set    `tfsdk:"page_channel_ids"`
+	TicketChannelIDs  types.Set    `tfsdk:"ticket_channel_ids"`
 }
 
 func (r *SloResource) Metadata(ctx context.Context, req resource.MetadataRequest, resp *resource.MetadataResponse) {
@@ -162,6 +164,20 @@ func (r *SloResource) Schema(ctx context.Context, req resource.SchemaRequest, re
 				Optional:            true,
 				MarkdownDescription: "Deployment environments the SLO is scoped to. Omit to cover all environments.",
 			},
+			"page_channel_ids": rschema.SetAttribute{
+				ElementType: types.StringType,
+				Optional:    true,
+				MarkdownDescription: "Channel IDs seeded onto the SLO's page-severity burn-rate alerts when the SLO is created. " +
+					"Delivery is alert-owned after creation: changing this attribute later updates only the Terraform state, " +
+					"not the existing alerts (edit the alerts' channels instead).",
+			},
+			"ticket_channel_ids": rschema.SetAttribute{
+				ElementType: types.StringType,
+				Optional:    true,
+				MarkdownDescription: "Channel IDs seeded onto the SLO's ticket-severity burn-rate alert when the SLO is created. " +
+					"Delivery is alert-owned after creation: changing this attribute later updates only the Terraform state, " +
+					"not the existing alerts (edit the alerts' channels instead).",
+			},
 		},
 	}
 }
@@ -263,6 +279,20 @@ func sloModelToCreate(ctx context.Context, m *SloModel) (logclient.SloCreate, di
 		}
 		in.Environments = envs
 	}
+	if !m.PageChannelIDs.IsNull() && !m.PageChannelIDs.IsUnknown() {
+		var ids []string
+		if diags := m.PageChannelIDs.ElementsAs(ctx, &ids, false); diags.HasError() {
+			return logclient.SloCreate{}, diags
+		}
+		in.PageChannelIDs = ids
+	}
+	if !m.TicketChannelIDs.IsNull() && !m.TicketChannelIDs.IsUnknown() {
+		var ids []string
+		if diags := m.TicketChannelIDs.ElementsAs(ctx, &ids, false); diags.HasError() {
+			return logclient.SloCreate{}, diags
+		}
+		in.TicketChannelIDs = ids
+	}
 	return in, nil
 }
 
@@ -380,6 +410,16 @@ func sloReadToModel(ctx context.Context, s *logclient.SloRead, m *SloModel) diag
 		}
 		m.Environments = set
 	}
+
+	// The API never returns the channel seeds (delivery is alert-owned after
+	// creation), so keep whatever the config/state carries. On fresh models
+	// (import) the zero value has no element type; pin it to a typed null.
+	if m.PageChannelIDs.ElementType(ctx) == nil {
+		m.PageChannelIDs = types.SetNull(types.StringType)
+	}
+	if m.TicketChannelIDs.ElementType(ctx) == nil {
+		m.TicketChannelIDs = types.SetNull(types.StringType)
+	}
 	return nil
 }