effectify ToolRegistry service (#18571)

packages/opencode/specs/effect-migration.md

@@ -162,7 +162,7 @@ Fully migrated (single namespace, InstanceState where needed, flattened facade):
 Still open and likely worth migrating:
 
 - [x] `Plugin`
-- [ ] `ToolRegistry`
+- [x] `ToolRegistry`
 - [ ] `Pty`
 - [ ] `Worktree`
 - [ ] `Bus`

packages/opencode/src/tool/registry.ts

@@ -7,14 +7,13 @@ import { GrepTool } from "./grep"
 import { BatchTool } from "./batch"
 import { ReadTool } from "./read"
 import { TaskTool } from "./task"
-import { TodoWriteTool, TodoReadTool } from "./todo"
+import { TodoWriteTool } from "./todo"
 import { WebFetchTool } from "./webfetch"
 import { WriteTool } from "./write"
 import { InvalidTool } from "./invalid"
 import { SkillTool } from "./skill"
 import type { Agent } from "../agent/agent"
 import { Tool } from "./tool"
-import { Instance } from "../project/instance"
 import { Config } from "../config/config"
 import path from "path"
 import { type ToolContext as PluginToolContext, type ToolDefinition } from "@opencode-ai/plugin"
@@ -27,17 +26,63 @@ import { Flag } from "@/flag/flag"
 import { Log } from "@/util/log"
 import { LspTool } from "./lsp"
 import { Truncate } from "./truncate"
-
 import { ApplyPatchTool } from "./apply_patch"
 import { Glob } from "../util/glob"
 import { pathToFileURL } from "url"
+import { Effect, Layer, ServiceMap } from "effect"
+import { InstanceState } from "@/effect/instance-state"
+import { makeRunPromise } from "@/effect/run-service"
 
 export namespace ToolRegistry {
   const log = Log.create({ service: "tool.registry" })
 
-  export const state = Instance.state(async () => {
-    const custom = [] as Tool.Info[]
+  type State = {
+    custom: Tool.Info[]
+  }
 
+  export interface Interface {
+    readonly register: (tool: Tool.Info) => Effect.Effect<void>
+    readonly ids: () => Effect.Effect<string[]>
+    readonly tools: (
+      model: { providerID: ProviderID; modelID: ModelID },
+      agent?: Agent.Info,
+    ) => Effect.Effect<(Awaited<ReturnType<Tool.Info["init"]>> & { id: string })[]>
+  }
+
+  export class Service extends ServiceMap.Service<Service, Interface>()("@opencode/ToolRegistry") {}
+
+  export const layer = Layer.effect(
+    Service,
+    Effect.gen(function* () {
+      const cache = yield* InstanceState.make<State>(
+        Effect.fn("ToolRegistry.state")(function* (ctx) {
+          const custom: Tool.Info[] = []
+
+          function fromPlugin(id: string, def: ToolDefinition): Tool.Info {
+            return {
+              id,
+              init: async (initCtx) => ({
+                parameters: z.object(def.args),
+                description: def.description,
+                execute: async (args, toolCtx) => {
+                  const pluginCtx = {
+                    ...toolCtx,
+                    directory: ctx.directory,
+                    worktree: ctx.worktree,
+                  } as unknown as PluginToolContext
+                  const result = await def.execute(args as any, pluginCtx)
+                  const out = await Truncate.output(result, {}, initCtx?.agent)
+                  return {
+                    title: "",
+                    output: out.truncated ? out.content : result,
+                    metadata: { truncated: out.truncated, outputPath: out.truncated ? out.outputPath : undefined },
+                  }
+                },
+              }),
+            }
+          }
+
+          yield* Effect.promise(async () => {
             const matches = await Config.directories().then((dirs) =>
               dirs.flatMap((dir) =>
                 Glob.scanSync("{tool,tools}/*.{js,ts}", { cwd: dir, absolute: true, dot: true, symlink: true }),
@@ -58,47 +103,14 @@ export namespace ToolRegistry {
                 custom.push(fromPlugin(id, def))
               }
             }
-
-    return { custom }
           })
 
-  function fromPlugin(id: string, def: ToolDefinition): Tool.Info {
-    return {
-      id,
-      init: async (initCtx) => ({
-        parameters: z.object(def.args),
-        description: def.description,
-        execute: async (args, ctx) => {
-          const pluginCtx = {
-            ...ctx,
-            directory: Instance.directory,
-            worktree: Instance.worktree,
-          } as unknown as PluginToolContext
-          const result = await def.execute(args as any, pluginCtx)
-          const out = await Truncate.output(result, {}, initCtx?.agent)
-          return {
-            title: "",
-            output: out.truncated ? out.content : result,
-            metadata: { truncated: out.truncated, outputPath: out.truncated ? out.outputPath : undefined },
-          }
-        },
+          return { custom }
         }),
-    }
-  }
+      )
 
-  export async function register(tool: Tool.Info) {
-    const { custom } = await state()
-    const idx = custom.findIndex((t) => t.id === tool.id)
-    if (idx >= 0) {
-      custom.splice(idx, 1, tool)
-      return
-    }
-    custom.push(tool)
-  }
-
-  async function all(): Promise<Tool.Info[]> {
-    const custom = await state().then((x) => x.custom)
-    const config = await Config.get()
+      async function all(custom: Tool.Info[]): Promise<Tool.Info[]> {
+        const cfg = await Config.get()
         const question = ["app", "cli", "desktop"].includes(Flag.OPENCODE_CLIENT) || Flag.OPENCODE_ENABLE_QUESTION_TOOL
 
         return [
@@ -113,20 +125,87 @@ export namespace ToolRegistry {
           TaskTool,
           WebFetchTool,
           TodoWriteTool,
-      // TodoReadTool,
           WebSearchTool,
           CodeSearchTool,
           SkillTool,
           ApplyPatchTool,
           ...(Flag.OPENCODE_EXPERIMENTAL_LSP_TOOL ? [LspTool] : []),
-      ...(config.experimental?.batch_tool === true ? [BatchTool] : []),
+          ...(cfg.experimental?.batch_tool === true ? [BatchTool] : []),
           ...(Flag.OPENCODE_EXPERIMENTAL_PLAN_MODE && Flag.OPENCODE_CLIENT === "cli" ? [PlanExitTool] : []),
           ...custom,
         ]
       }
 
+      const register = Effect.fn("ToolRegistry.register")(function* (tool: Tool.Info) {
+        const state = yield* InstanceState.get(cache)
+        const idx = state.custom.findIndex((t) => t.id === tool.id)
+        if (idx >= 0) {
+          state.custom.splice(idx, 1, tool)
+          return
+        }
+        state.custom.push(tool)
+      })
+
+      const ids = Effect.fn("ToolRegistry.ids")(function* () {
+        const state = yield* InstanceState.get(cache)
+        const tools = yield* Effect.promise(() => all(state.custom))
+        return tools.map((t) => t.id)
+      })
+
+      const tools = Effect.fn("ToolRegistry.tools")(function* (
+        model: { providerID: ProviderID; modelID: ModelID },
+        agent?: Agent.Info,
+      ) {
+        const state = yield* InstanceState.get(cache)
+        const allTools = yield* Effect.promise(() => all(state.custom))
+        return yield* Effect.promise(() =>
+          Promise.all(
+            allTools
+              .filter((tool) => {
+                // Enable websearch/codesearch for zen users OR via enable flag
+                if (tool.id === "codesearch" || tool.id === "websearch") {
+                  return model.providerID === ProviderID.opencode || Flag.OPENCODE_ENABLE_EXA
+                }
+
+                // use apply tool in same format as codex
+                const usePatch =
+                  model.modelID.includes("gpt-") && !model.modelID.includes("oss") && !model.modelID.includes("gpt-4")
+                if (tool.id === "apply_patch") return usePatch
+                if (tool.id === "edit" || tool.id === "write") return !usePatch
+
+                return true
+              })
+              .map(async (tool) => {
+                using _ = log.time(tool.id)
+                const next = await tool.init({ agent })
+                const output = {
+                  description: next.description,
+                  parameters: next.parameters,
+                }
+                await Plugin.trigger("tool.definition", { toolID: tool.id }, output)
+                return {
+                  id: tool.id,
+                  ...next,
+                  description: output.description,
+                  parameters: output.parameters,
+                }
+              }),
+          ),
+        )
+      })
+
+      return Service.of({ register, ids, tools })
+    }),
+  )
+
+  const runPromise = makeRunPromise(Service, layer)
+
+  export async function register(tool: Tool.Info) {
+    return runPromise((svc) => svc.register(tool))
+  }
+
   export async function ids() {
-    return all().then((x) => x.map((t) => t.id))
+    return runPromise((svc) => svc.ids())
   }
 
   export async function tools(
@@ -136,39 +215,6 @@ export namespace ToolRegistry {
     },
     agent?: Agent.Info,
   ) {
-    const tools = await all()
-    const result = await Promise.all(
-      tools
-        .filter((t) => {
-          // Enable websearch/codesearch for zen users OR via enable flag
-          if (t.id === "codesearch" || t.id === "websearch") {
-            return model.providerID === ProviderID.opencode || Flag.OPENCODE_ENABLE_EXA
-          }
-
-          // use apply tool in same format as codex
-          const usePatch =
-            model.modelID.includes("gpt-") && !model.modelID.includes("oss") && !model.modelID.includes("gpt-4")
-          if (t.id === "apply_patch") return usePatch
-          if (t.id === "edit" || t.id === "write") return !usePatch
-
-          return true
-        })
-        .map(async (t) => {
-          using _ = log.time(t.id)
-          const tool = await t.init({ agent })
-          const output = {
-            description: tool.description,
-            parameters: tool.parameters,
-          }
-          await Plugin.trigger("tool.definition", { toolID: t.id }, output)
-          return {
-            id: t.id,
-            ...tool,
-            description: output.description,
-            parameters: output.parameters,
-          }
-        }),
-    )
-    return result
+    return runPromise((svc) => svc.tools(model, agent))
   }
 }