eve/dist/src/protocol/message.js

Filesystem-first framework for durable backend AI agents that run anywhere.

import{toChannelLocalContinuationToken}from"#shared/continuation-token.js";import{deserializeUrlFilePart,hasInternalRefScheme,isSerializedUrlFilePart}from"#internal/attachments/url-refs.js";import{decodeSandboxRef,isSandboxRefUrl}from"#internal/attachments/sandbox-refs.js";const EVE_SESSION_ID_HEADER=`x-eve-session-id`,EVE_STREAM_FORMAT_HEADER=`x-eve-stream-format`,EVE_STREAM_VERSION_HEADER=`x-eve-stream-version`,EVE_MESSAGE_STREAM_CONTENT_TYPE=`application/x-ndjson; charset=utf-8`,EVE_MESSAGE_STREAM_FORMAT=`ndjson`,EVE_MESSAGE_STREAM_VERSION=`19`,textEncoder=new TextEncoder;function isCurrentTurnBoundaryEvent(e){return e.type===`session.completed`||e.type===`session.failed`||e.type===`session.waiting`}function isTurnFailureEvent(e){return e.type===`session.failed`||e.type===`step.failed`||e.type===`turn.failed`}function createSessionStartedEvent(e){let t={};return e?.invocation!==void 0&&(t.invocation=e.invocation),e?.runtime!==void 0&&(t.runtime=e.runtime),{data:t,type:`session.started`}}function createTurnStartedEvent(e){return{data:{sequence:e.sequence,turnId:e.turnId},type:`turn.started`}}function createMessageReceivedEvent(e){return{data:{message:summarizeUserContent(e.message),parts:projectUserContentParts(e.message),sequence:e.sequence,turnId:e.turnId},type:`message.received`}}function summarizeUserContent(e){if(typeof e==`string`)return e;let t=[];for(let n of e)if(n.type===`text`)t.push(n.text);else if(n.type===`file`){let e=n.filename??n.mediaType;t.push(`[file: ${e} (${n.mediaType})]`)}else n.type===`image`&&t.push(`[image: ${n.mediaType??`image`}]`);return t.join(`
`)}function projectUserContentParts(e){if(typeof e==`string`)return[{text:e,type:`text`}];let t=[];for(let n of e)n.type===`text`?t.push({text:n.text,type:`text`}):n.type===`file`?t.push(projectFileLikePart(n.data,n.mediaType,n.filename)):n.type===`image`&&t.push(projectFileLikePart(n.image,n.mediaType??`application/octet-stream`,void 0));return t}function projectFileLikePart(e,t,n){if(isSandboxRefUrl(e)){let t=decodeSandboxRef(e);return createProjectedFilePart({filename:basenameOf(n??t.path),mediaType:t.mediaType,size:t.size})}let r=projectTaggedFileData(e,t,n);if(r!==void 0)return r;let i=byteLengthOf(e);return createProjectedFilePart(i===void 0?{filename:n,mediaType:t,...clientUrlFragment(e)}:{filename:n,mediaType:t,size:i})}function projectTaggedFileData(e,t,n){if(isTaggedFileData(e))switch(e.type){case`data`:{let r=byteLengthOf(e.data);return createProjectedFilePart(r===void 0?{filename:n,mediaType:t}:{filename:n,mediaType:t,size:r})}case`reference`:case`text`:return createProjectedFilePart({filename:n,mediaType:t});case`url`:return createProjectedFilePart({filename:n,mediaType:t,...clientUrlFragment(e.url)})}}function createProjectedFilePart(e){let t={mediaType:e.mediaType,type:`file`};return e.filename!==void 0&&(t.filename=e.filename),e.size!==void 0&&(t.size=e.size),e.url!==void 0&&(t.url=e.url),t}function isTaggedFileData(e){if(typeof e!=`object`||!e)return!1;let t=e.type;return t===`data`||t===`reference`||t===`text`||t===`url`}function byteLengthOf(e){if(e instanceof Uint8Array||e instanceof ArrayBuffer)return e.byteLength}function clientUrlFragment(e){if(isSerializedUrlFilePart(e))try{let n=deserializeUrlFilePart(e);return isClientResolvableUrl(n)?{url:n.href}:{}}catch{return{}}if(e instanceof URL)return isClientResolvableUrl(e)?{url:e.href}:{};if(typeof e!=`string`||hasInternalRefScheme(e))return{};if(e.startsWith(`data:`))return{url:e};try{let t=new URL(e);return isClientResolvableUrl(t)?{url:t.href}:{}}catch{return{}}}function isClientResolvableUrl(e){return e.protocol===`http:`||e.protocol===`https:`||e.protocol===`data:`}function basenameOf(e){let t=e.replaceAll(`\\`,`/`),n=t.slice(t.lastIndexOf(`/`)+1);return n.length>0?n:e}function createActionsRequestedEvent(e){return{data:{actions:e.actions,sequence:e.sequence,stepIndex:e.stepIndex,turnId:e.turnId},type:`actions.requested`}}function createAuthorizationRequiredEvent(e){let t={description:e.description,name:e.name,sequence:e.sequence,stepIndex:e.stepIndex,turnId:e.turnId};return e.authorization!==void 0&&(t.authorization=e.authorization),e.webhookUrl!==void 0&&(t.webhookUrl=e.webhookUrl),{data:t,type:`authorization.required`}}function createAuthorizationCompletedEvent(e){let t={name:e.name,outcome:e.outcome,sequence:e.sequence,stepIndex:e.stepIndex,turnId:e.turnId};return e.authorization!==void 0&&(t.authorization=e.authorization),e.reason!==void 0&&(t.reason=e.reason),{data:t,type:`authorization.completed`}}function createInputRequestedEvent(e){return{data:{requests:e.requests,sequence:e.sequence,stepIndex:e.stepIndex,turnId:e.turnId},type:`input.requested`}}function createActionResultEvent(e){let t=e.rejected===!0?{error:buildActionResultError(e.result),status:`rejected`}:normalizeActionResultOutcome(e.result);return{data:{error:t.error,result:e.result,sequence:e.sequence,stepIndex:e.stepIndex,status:t.status,turnId:e.turnId},type:`action.result`}}function createSubagentCalledEvent(e){return{data:{callId:e.callId,childSessionId:e.childSessionId,sessionId:e.sessionId,sequence:e.sequence,name:e.name,remote:e.remote,toolName:e.toolName,turnId:e.turnId,workflowId:e.workflowId},type:`subagent.called`}}function createMessageAppendedEvent(e){return{data:{messageDelta:e.messageDelta,messageSoFar:e.messageSoFar,sequence:e.sequence,stepIndex:e.stepIndex,turnId:e.turnId},type:`message.appended`}}function createReasoningAppendedEvent(e){return{data:{reasoningDelta:e.reasoningDelta,reasoningSoFar:e.reasoningSoFar,sequence:e.sequence,stepIndex:e.stepIndex,turnId:e.turnId},type:`reasoning.appended`}}function createMessageCompletedEvent(e){return{data:{finishReason:e.finishReason??`stop`,message:e.message,sequence:e.sequence,stepIndex:e.stepIndex,turnId:e.turnId},type:`message.completed`}}function createReasoningCompletedEvent(e){return{data:{reasoning:e.reasoning,sequence:e.sequence,stepIndex:e.stepIndex,turnId:e.turnId},type:`reasoning.completed`}}function createResultCompletedEvent(e){return{data:{result:e.result,sequence:e.sequence,stepIndex:e.stepIndex,turnId:e.turnId},type:`result.completed`}}function createStepStartedEvent(e){return{data:{sequence:e.sequence,stepIndex:e.stepIndex,turnId:e.turnId},type:`step.started`}}function createStepCompletedEvent(e){let t={finishReason:e.finishReason,sequence:e.sequence,stepIndex:e.stepIndex,turnId:e.turnId};return e.usage!==void 0&&(t.usage=e.usage),e.providerMetadata!==void 0&&(t.providerMetadata=e.providerMetadata),{data:t,type:`step.completed`}}function createStepFailedEvent(e){return{data:{code:e.code,details:e.details,message:e.message,sequence:e.sequence,stepIndex:e.stepIndex,turnId:e.turnId},type:`step.failed`}}function createTurnCompletedEvent(e){return{data:{sequence:e.sequence,turnId:e.turnId},type:`turn.completed`}}function createTurnFailedEvent(e){return{data:{code:e.code,details:e.details,message:e.message,sequence:e.sequence,turnId:e.turnId},type:`turn.failed`}}function createTurnCancelledEvent(e){return{data:{sequence:e.sequence,turnId:e.turnId},type:`turn.cancelled`}}function createCompactionRequestedEvent(e){return{data:{modelId:e.modelId,sequence:e.sequence,sessionId:e.sessionId,turnId:e.turnId,usageInputTokens:e.usageInputTokens??null},type:`compaction.requested`}}function createCompactionCompletedEvent(e){return{data:{modelId:e.modelId,sequence:e.sequence,sessionId:e.sessionId,turnId:e.turnId},type:`compaction.completed`}}function createSessionWaitingEvent(t){return{data:{continuationToken:toChannelLocalContinuationToken(t),wait:`next-user-message`},type:`session.waiting`}}function createSessionFailedEvent(e){return{data:{code:e.code,details:e.details,message:e.message,sessionId:e.sessionId},type:`session.failed`}}function createSessionCompletedEvent(){return{type:`session.completed`}}function timestampHandleMessageStreamEvent(e,t=new Date().toISOString()){return{...e,meta:{at:t}}}function encodeMessageStreamEvent(e){return textEncoder.encode(`${JSON.stringify(e)}\n`)}function normalizeActionResultOutcome(e){if(e.isError===!0)return{error:buildActionResultError(e),status:`failed`};let t=readActionResultOutputError(e.output);return t===void 0?{status:`completed`}:{error:t,status:`failed`}}function buildActionResultError(e){let t=readActionResultOutputError(e.output);return t===void 0?{code:`ACTION_RESULT_FAILED`,message:formatActionResultOutput(e.output)}:t}function readActionResultOutputError(e){let t=parseActionResultOutputRecord(e);if(t===void 0)return;let n=typeof t.code==`string`&&t.code.length>0?t.code:void 0,r=typeof t.message==`string`&&t.message.length>0?t.message:void 0;if(!(n===void 0||r===void 0))return{code:n,message:r}}function parseActionResultOutputRecord(e){if(typeof e==`object`&&e)return e;if(typeof e!=`string`)return;let t=e.trim();if(t.length!==0)try{let e=JSON.parse(t);if(typeof e==`object`&&e)return e}catch{return}}function formatActionResultOutput(e){if(typeof e==`string`)return e;let t=JSON.stringify(e);return typeof t==`string`&&t.length>0?t:`Action failed.`}export{EVE_MESSAGE_STREAM_CONTENT_TYPE,EVE_MESSAGE_STREAM_FORMAT,EVE_MESSAGE_STREAM_VERSION,EVE_SESSION_ID_HEADER,EVE_STREAM_FORMAT_HEADER,EVE_STREAM_VERSION_HEADER,createActionResultEvent,createActionsRequestedEvent,createAuthorizationCompletedEvent,createAuthorizationRequiredEvent,createCompactionCompletedEvent,createCompactionRequestedEvent,createInputRequestedEvent,createMessageAppendedEvent,createMessageCompletedEvent,createMessageReceivedEvent,createReasoningAppendedEvent,createReasoningCompletedEvent,createResultCompletedEvent,createSessionCompletedEvent,createSessionFailedEvent,createSessionStartedEvent,createSessionWaitingEvent,createStepCompletedEvent,createStepFailedEvent,createStepStartedEvent,createSubagentCalledEvent,createTurnCancelledEvent,createTurnCompletedEvent,createTurnFailedEvent,createTurnStartedEvent,encodeMessageStreamEvent,isCurrentTurnBoundaryEvent,isTurnFailureEvent,timestampHandleMessageStreamEvent};