mirror of
https://github.com/anomalyco/opencode.git
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285 lines
12 KiB
TypeScript
285 lines
12 KiB
TypeScript
export * as Tool from "./tool.js"
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export { CallID, Content, Error, FileContent, TextContent } from "@opencode-ai/schema/tool"
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export type { Context, Metadata, Options, Result } from "@opencode-ai/schema/tool"
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import type { ToolCall, ToolDefinition } from "@opencode-ai/ai"
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import { Tool } from "@opencode-ai/schema/tool"
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import { Context, Effect, Layer, Schema, Scope, Semaphore } from "effect"
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import { makeLocationNode } from "@opencode-ai/util/effect/app-node"
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import type { Agent } from "./agent"
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import { CodeModeCatalog } from "./codemode/catalog"
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import { CodeModeTool } from "./codemode/tool"
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import { Image } from "./image"
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import { Permission } from "./permission"
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import { PluginHooks } from "./plugin/hooks"
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import { SessionMessage } from "./session/message"
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import { SessionSchema } from "./session/schema"
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import { definition, execute, normalizeContent } from "./tool/runtime"
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import { Wildcard } from "./util/wildcard"
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export class RegistrationError extends Schema.TaggedErrorClass<RegistrationError>()("Tool.RegistrationError", {
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name: Schema.String,
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message: Schema.String,
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}) {}
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export interface Interface {
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readonly transform: (
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callback: (draft: { readonly add: (tool: Tool.Info) => void }) => void,
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) => Effect.Effect<void, RegistrationError, Scope.Scope>
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readonly snapshot: (permissions?: Permission.Ruleset) => Effect.Effect<Snapshot>
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}
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export interface Snapshot {
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readonly definitions: ReadonlyArray<ToolDefinition>
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readonly codeModeCatalog?: ReadonlyArray<CodeModeCatalog.Entry>
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readonly execute: (input: {
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readonly sessionID: SessionSchema.ID
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readonly agent: Agent.ID
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readonly messageID: SessionMessage.ID
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readonly call: ToolCall
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readonly progress?: (update: Tool.Metadata) => Effect.Effect<void>
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}) => Effect.Effect<Tool.Result & { readonly content: ReadonlyArray<Tool.Content> }, Tool.Error>
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}
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export class Service extends Context.Service<Service, Interface>()("@opencode/Tool") {}
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const layer = Layer.effect(
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Service,
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Effect.gen(function* () {
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const hooks = yield* PluginHooks.Service
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const image = yield* Image.Service
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type NormalizedItem = Tool.Content | "decode" | "size"
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const normalizeImages = Effect.fn("Tool.normalizeImages")(function* (content: ReadonlyArray<Tool.Content>) {
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const normalized = yield* Effect.forEach(content, (item): Effect.Effect<NormalizedItem> => {
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if (item.type !== "file" || !item.mime.startsWith("image/")) return Effect.succeed(item)
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const base64 = /^data:[^,]*;base64,(.*)$/s.exec(item.uri)?.[1]
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if (base64 === undefined) return Effect.succeed(item)
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const resource = item.name ?? `${item.mime} tool output`
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return image.normalize(resource, { uri: resource, content: base64, encoding: "base64", mime: item.mime }).pipe(
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Effect.map((result) => ({
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...item,
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uri: `data:${result.mime};base64,${result.content}`,
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mime: result.mime,
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})),
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Effect.catchTag("Image.ResizerUnavailableError", () => Effect.succeed(item)),
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Effect.catchTag("Image.DecodeError", () => Effect.succeed("decode" as const)),
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Effect.catchTag("Image.SizeError", () => Effect.succeed("size" as const)),
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)
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})
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const note = (reason: "decode" | "size", text: string) => {
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const count = normalized.filter((item) => item === reason).length
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if (count === 0) return []
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return [{ type: "text" as const, text: `[${count} image${count === 1 ? "" : "s"} omitted: ${text}]` }]
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}
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return [
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...normalized.filter((item) => typeof item !== "string"),
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...note("decode", "could not be decoded."),
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...note("size", "could not be resized below the image size limit."),
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]
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})
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const local = new Map<string, Array<{ readonly token: object; readonly tool: Tool.Info }>>()
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const lock = Semaphore.makeUnsafe(1)
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const executeTool = Effect.fn("Tool.execute")(function* (
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tool: Tool.Info,
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name: string,
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input: unknown,
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context: Tool.Context,
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) {
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const beforeEvent: PluginHooks.Domains["tool"]["execute.before"] = {
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tool: name,
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sessionID: context.sessionID,
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agent: context.agent,
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messageID: context.messageID,
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callID: context.callID,
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input,
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}
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yield* hooks.trigger("tool", "execute.before", beforeEvent)
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const execution = yield* execute(tool, beforeEvent.input, context).pipe(
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Effect.map((value) => ({ value })),
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Effect.catchTag("Tool.Error", (failure) => Effect.succeed({ failure })),
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)
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const base = {
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tool: name,
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sessionID: context.sessionID,
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agent: context.agent,
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messageID: context.messageID,
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callID: context.callID,
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input: beforeEvent.input,
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}
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if ("failure" in execution) {
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const afterEvent: PluginHooks.Domains["tool"]["execute.after"] = {
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...base,
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status: "error",
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error: execution.failure,
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}
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yield* hooks.trigger("tool", "execute.after", afterEvent)
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return yield* afterEvent.error
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}
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const content = yield* normalizeImages(execution.value.content)
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const afterEvent: PluginHooks.Domains["tool"]["execute.after"] = {
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...base,
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status: "completed",
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result: {
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...(execution.value.output === undefined ? {} : { output: execution.value.output }),
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content: content.length > 0 ? content : execution.value.content,
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...(execution.value.metadata === undefined ? {} : { metadata: execution.value.metadata }),
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},
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}
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yield* hooks.trigger("tool", "execute.after", afterEvent)
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const afterContent = yield* normalizeImages(normalizeContent(afterEvent.result.content, afterEvent.result.output))
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return {
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...(afterEvent.result.output === undefined ? {} : { output: afterEvent.result.output }),
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content: afterContent,
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...(afterEvent.result.metadata === undefined ? {} : { metadata: afterEvent.result.metadata }),
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}
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})
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const transform: Interface["transform"] = Effect.fn("Tool.transform")(function* (callback) {
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const tools: Array<Tool.Info> = []
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yield* Effect.sync(() => callback({ add: (tool) => tools.push(tool) }))
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yield* Effect.forEach(
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tools.flatMap((tool) => (tool.options?.namespace === undefined ? [] : [tool.options.namespace])),
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validateNamespace,
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{ discard: true },
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)
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const entries = normalizedEntries(tools)
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yield* Effect.forEach(entries, (entry) => validateName(normalizedName(entry.tool)), { discard: true })
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const collision = entries.find(
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(entry, index) => entries.findIndex((candidate) => candidate.key === entry.key) !== index,
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)
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if (collision)
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return yield* Effect.fail(
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new RegistrationError({
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name: collision.key,
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message: `Duplicate normalized tool name: ${collision.key}`,
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}),
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)
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const reserved = entries.find((entry) => entry.tool.options?.codemode === false && entry.key === "execute")
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if (reserved)
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return yield* Effect.fail(
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new RegistrationError({
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name: reserved.key,
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message: 'Tool name "execute" is reserved for CodeMode',
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}),
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)
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if (entries.length === 0) return
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yield* Effect.uninterruptible(
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lock.withPermit(
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Effect.gen(function* () {
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const token = {}
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for (const entry of entries)
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local.set(entry.key, [...(local.get(entry.key) ?? []), { token, tool: entry.tool }])
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yield* Effect.addFinalizer(() =>
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lock.withPermit(
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Effect.sync(() => {
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for (const entry of entries) {
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const remaining = local.get(entry.key)?.filter((item) => item.token !== token) ?? []
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if (remaining.length > 0) local.set(entry.key, remaining)
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else local.delete(entry.key)
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}
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}),
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),
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)
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}),
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),
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)
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})
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return Service.of({
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transform,
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snapshot: Effect.fn("Tool.snapshot")((permissions) =>
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lock.withPermit(
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Effect.gen(function* () {
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const active = new Map<string, Tool.Info>()
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const rules = permissions ?? []
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for (const [name, entries] of local) {
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const tool = entries.at(-1)?.tool
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if (!tool) continue
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if (whollyDisabled(tool.options?.permission ?? name, rules)) continue
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active.set(name, tool)
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}
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const direct = new Map(Array.from(active).filter(([, tool]) => tool.options?.codemode === false))
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const codemode = new Map(Array.from(active).filter(([, tool]) => tool.options?.codemode !== false))
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const executeRule = rules.findLast((rule) => Wildcard.match("execute", rule.action))
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const codemodeEnabled = executeRule?.resource !== "*" || executeRule.effect !== "deny"
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const codemodeTool = codemodeEnabled
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? CodeModeTool.create(codemode, (name, tool, input, context) => executeTool(tool, name, input, context))
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: undefined
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const codeModeCatalog = codemodeEnabled ? CodeModeTool.catalog(codemode) : undefined
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return {
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...(codeModeCatalog === undefined ? {} : { codeModeCatalog }),
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definitions: [
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...Array.from(direct)
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.sort(([left], [right]) => (left < right ? -1 : left > right ? 1 : 0))
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.map(([, tool]) => definition(tool)),
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...(codemodeTool ? [definition(codemodeTool)] : []),
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],
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execute: (input: {
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readonly sessionID: SessionSchema.ID
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readonly agent: Agent.ID
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readonly messageID: SessionMessage.ID
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readonly call: ToolCall
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readonly progress?: (update: Tool.Metadata) => Effect.Effect<void>
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}) => {
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const context: Tool.Context = {
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sessionID: input.sessionID,
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agent: input.agent,
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messageID: input.messageID,
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callID: Tool.CallID.make(input.call.id),
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progress: input.progress ?? (() => Effect.void),
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}
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if (input.call.name === "execute" && codemodeTool)
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return executeTool(codemodeTool, input.call.name, input.call.input, context)
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const tool = direct.get(input.call.name)
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if (tool) return executeTool(tool, input.call.name, input.call.input, context)
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return new Tool.Error({ message: `Unknown tool: ${input.call.name}` })
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},
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}
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}),
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),
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),
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})
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}),
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)
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const whollyDisabled = (action: string, rules: Permission.Ruleset) => {
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const rule = rules.findLast((rule) => Wildcard.match(action, rule.action))
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return rule?.resource === "*" && rule.effect === "deny"
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}
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const validateName = (name: string) =>
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/^[A-Za-z][A-Za-z0-9_-]{0,63}$/.test(name)
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? Effect.void
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: Effect.fail(new RegistrationError({ name, message: `Invalid tool name: ${name}` }))
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const validateNamespace = (namespace: string) =>
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namespace.split(".").every((segment) => /^[A-Za-z][A-Za-z0-9_-]{0,63}$/.test(segment))
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? Effect.void
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: Effect.fail(
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new RegistrationError({
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name: namespace,
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message: `Invalid tool namespace: ${JSON.stringify(namespace)}`,
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}),
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)
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const normalizedName = (tool: Tool.Info) => tool.name.replace(/[^a-zA-Z0-9_-]/g, "_")
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const effectiveName = (tool: Tool.Info) =>
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tool.options?.namespace === undefined
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? normalizedName(tool)
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: `${tool.options.namespace.replaceAll(".", "_")}_${normalizedName(tool)}`
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const normalizedEntries = (tools: ReadonlyArray<Tool.Info>) =>
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tools.map((tool) => ({
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key: effectiveName(tool),
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tool,
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}))
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export const node = makeLocationNode({
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service: Service,
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layer,
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deps: [PluginHooks.node, Image.node],
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})
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