use chrono::Utc;
use reqwest::header::{HeaderName, HeaderValue, ACCEPT, CONTENT_TYPE};
use routa_core::events::{AgentEvent, AgentEventType};
use routa_core::models::kanban::{KanbanAutomationStep, KanbanBoard, KanbanTransport};
use serde_json::{json, Value};
use std::collections::HashMap;
use std::time::{Duration, Instant};
use crate::error::ServerError;
use crate::models::task::{Task, TaskLaneSession, TaskLaneSessionStatus};
use crate::state::AppState;
use routa_core::store::acp_session_store::CreateAcpSessionParams;
const A2A_POLL_INTERVAL: Duration = Duration::from_secs(1);
const A2A_MAX_WAIT: Duration = Duration::from_secs(300);
const A2A_AUTH_CONFIGS_ENV: &str = "ROUTA_A2A_AUTH_CONFIGS";
pub async fn resolve_codebase(
state: &AppState,
workspace_id: &str,
repo_path: Option<&str>,
) -> Result<Option<crate::models::codebase::Codebase>, ServerError> {
if let Some(path) = repo_path {
state
.codebase_store
.find_by_repo_path(workspace_id, path)
.await
} else {
state.codebase_store.get_default(workspace_id).await
}
}
pub async fn auto_create_worktree(
state: &AppState,
task: &crate::models::task::Task,
codebase: &crate::models::codebase::Codebase,
) -> Result<String, String> {
let short_id = &task.id[..task.id.len().min(8)];
let label = short_id.to_string();
let branch = format!("issue/{short_id}");
let workspace = state
.workspace_store
.get(&task.workspace_id)
.await
.ok()
.flatten();
let worktree_root = workspace
.as_ref()
.and_then(|ws| ws.metadata.get("worktreeRoot"))
.filter(|s| !s.trim().is_empty())
.map(std::path::PathBuf::from)
.unwrap_or_else(|| crate::git::get_default_workspace_worktree_root(&task.workspace_id));
let codebase_label = codebase
.label
.as_ref()
.map(|l| crate::git::branch_to_safe_dir_name(l))
.unwrap_or_else(|| crate::git::branch_to_safe_dir_name(&codebase.id));
let worktree_path = worktree_root
.join(&codebase_label)
.join(crate::git::branch_to_safe_dir_name(&label));
if let Some(parent) = worktree_path.parent() {
std::fs::create_dir_all(parent)
.map_err(|e| format!("Failed to create worktree parent dir: {e}"))?;
}
let worktree_path_str = worktree_path.to_string_lossy().to_string();
let base_branch = codebase
.branch
.clone()
.unwrap_or_else(|| "main".to_string());
let worktree = crate::models::worktree::Worktree::new(
uuid::Uuid::new_v4().to_string(),
codebase.id.clone(),
task.workspace_id.clone(),
worktree_path_str.clone(),
branch.clone(),
base_branch.clone(),
Some(label),
);
state
.worktree_store
.save(&worktree)
.await
.map_err(|e| format!("Failed to save worktree: {e}"))?;
let _ = crate::git::worktree_prune(&codebase.repo_path);
crate::git::worktree_add(
&codebase.repo_path,
&worktree_path_str,
&branch,
&base_branch,
false,
)
.map_err(|e| format!("git worktree add failed: {e}"))?;
Ok(worktree.id)
}
pub async fn trigger_assigned_task_agent(
state: &AppState,
task: &mut Task,
cwd: Option<&str>,
branch: Option<&str>,
) -> Result<(), String> {
let board = load_task_board(state, task).await?;
let step = resolve_task_automation_step(board.as_ref(), task);
if is_a2a_step(step.as_ref()) {
return trigger_assigned_task_a2a_agent(state, task, board.as_ref(), step.as_ref()).await;
}
trigger_assigned_task_acp_agent(state, task, board.as_ref(), step.as_ref(), cwd, branch).await
}
fn build_task_prompt(
task: &Task,
board_id: Option<&str>,
next_column_id: Option<&str>,
available_columns: &str,
) -> String {
let labels = if task.labels.is_empty() {
"Labels: none".to_string()
} else {
format!("Labels: {}", task.labels.join(", "))
};
let lane_id = task.column_id.as_deref().unwrap_or("backlog");
let lane_guidance = match lane_id {
"dev" => vec![
"You are in the `dev` lane. This lane may implement the requested change, but you must keep work scoped to the current card.".to_string(),
"Use `routa-coordination_update_card` to record concrete progress on this card before or after meaningful implementation steps.".to_string(),
"When implementation for this lane is complete, use `routa-coordination_move_card` to advance the same card.".to_string(),
],
"todo" => vec![
"You are in the `todo` lane. This lane does not perform full implementation work.".to_string(),
"Only clarify the card, update its progress or status, and move the same card forward when the lane is complete.".to_string(),
"Do not edit files, do not inspect the whole repository, and do not run browser tests or environment diagnostics in this lane.".to_string(),
],
_ => vec![
format!("You are in the `{lane_id}` lane. Keep work scoped to the current card and this lane only."),
],
};
let mut sections = vec![
format!("You are assigned to Kanban task: {}", task.title),
String::new(),
"## Context".to_string(),
String::new(),
"**IMPORTANT**: You are working in Kanban lane automation for exactly one existing card.".to_string(),
"Only operate on the current card. Do not create a new task, do not switch to a different card, and do not broaden scope.".to_string(),
"Use the exact MCP tool names exposed by the provider. In OpenCode, prefer `routa-coordination_update_card` and `routa-coordination_move_card`.".to_string(),
"When a move is blocked by missing story definition fields, use `routa-coordination_update_task` to update structured fields such as scope, acceptance criteria, verification commands, or test cases.".to_string(),
"Do NOT use `gh issue create`, browser automation, Playwright, repo-wide debugging, API exploration, or unrelated codebase research unless the card objective explicitly requires it.".to_string(),
String::new(),
"## Task Details".to_string(),
String::new(),
format!("**Card ID:** {}", task.id),
format!(
"**Priority:** {}",
task.priority.as_ref().map(|value| value.as_str()).unwrap_or("medium")
),
board_id
.map(|value| format!("**Board ID:** {value}"))
.unwrap_or_else(|| "**Board ID:** unavailable".to_string()),
format!("**Current Lane:** {}", lane_id),
next_column_id
.map(|value| format!("**Next Column ID:** {value}"))
.unwrap_or_else(|| "**Next Column ID:** unavailable".to_string()),
labels,
task.github_url
.as_ref()
.map(|url| format!("**GitHub Issue:** {url}"))
.unwrap_or_else(|| "**GitHub Issue:** local-only".to_string()),
String::new(),
"## Objective".to_string(),
String::new(),
task.objective.clone(),
String::new(),
"## Board Columns".to_string(),
String::new(),
available_columns.to_string(),
String::new(),
"## Lane Guidance".to_string(),
String::new(),
lane_guidance.join("\n"),
String::new(),
];
if let Some(test_cases) = task.test_cases.as_ref().filter(|value| !value.is_empty()) {
sections.push("## Test Cases".to_string());
sections.push(String::new());
sections.push(
test_cases
.iter()
.map(|value| format!("- {value}"))
.collect::<Vec<_>>()
.join("\n"),
);
sections.push(String::new());
}
sections.extend([
"## Available MCP Tools".to_string(),
String::new(),
"Use the exact MCP tool names exposed in this session. For OpenCode, the important ones are:".to_string(),
String::new(),
format!(
"- **routa-coordination_update_task**: Update structured task fields such as scope, acceptanceCriteria, verificationCommands, and testCases. Use taskId: \"{}\" when story readiness is missing.",
task.id
),
format!(
"- **routa-coordination_update_card**: Update this card's title, description, priority, or labels. Use cardId: \"{}\"",
task.id
),
"- **routa-coordination_update_card is not a story-readiness tool**: card description or comment text does not satisfy move gates for scope, acceptance criteria, verification commands, or test cases.".to_string(),
format!(
"- **routa-coordination_move_card**: Move this same card to targetColumnId \"{}\" when the current lane is complete.",
next_column_id.unwrap_or("the exact next column id listed above")
),
String::new(),
"## Instructions".to_string(),
String::new(),
"1. Start work for the current lane immediately.".to_string(),
"2. Keep changes focused on this card only.".to_string(),
"3. Use `routa-coordination_update_task` to fix missing structured story fields, and `routa-coordination_update_card` only for card text or progress notes.".to_string(),
format!(
"4. Use the exact tool name `routa-coordination_move_card` with targetColumnId `{}` only when the current lane is complete.",
next_column_id.unwrap_or("the exact next column id listed above")
),
"5. Do not guess board ids or column ids. Use the Board ID and Board Columns listed above.".to_string(),
"6. If blocked, update this same card with the blocking reason instead of exploring side quests.".to_string(),
"7. Treat lane guidance as stricter than the general card objective when they conflict.".to_string(),
"8. Do not run browser tests or environment diagnostics unless the card explicitly asks for them.".to_string(),
]);
sections.join("\n")
}
async fn trigger_assigned_task_acp_agent(
state: &AppState,
task: &mut Task,
board: Option<&KanbanBoard>,
step: Option<&KanbanAutomationStep>,
cwd: Option<&str>,
branch: Option<&str>,
) -> Result<(), String> {
let provider = task
.assigned_provider
.clone()
.unwrap_or_else(|| "opencode".to_string());
let role = task
.assigned_role
.clone()
.unwrap_or_else(|| "CRAFTER".to_string())
.to_uppercase();
let session_id = uuid::Uuid::new_v4().to_string();
let cwd = cwd
.map(|value| value.to_string())
.or_else(|| {
std::env::current_dir()
.ok()
.map(|path| path.to_string_lossy().to_string())
})
.unwrap_or_else(|| ".".to_string());
state
.acp_manager
.create_session(
session_id.clone(),
cwd.clone(),
task.workspace_id.clone(),
Some(provider.clone()),
Some(role.clone()),
None,
None,
Some("full".to_string()),
Some("kanban-planning".to_string()),
)
.await
.map_err(|error| format!("Failed to create ACP session: {error}"))?;
state
.acp_session_store
.create(CreateAcpSessionParams {
id: &session_id,
cwd: &cwd,
branch: None,
workspace_id: &task.workspace_id,
provider: Some(provider.as_str()),
role: Some(role.as_str()),
custom_command: None,
custom_args: None,
parent_session_id: None,
})
.await
.map_err(|error| format!("Failed to persist ACP session: {error}"))?;
let mut ordered_columns = board.map(|value| value.columns.clone()).unwrap_or_default();
ordered_columns.sort_by_key(|column| column.position);
let next_column_id = ordered_columns
.iter()
.position(|column| Some(column.id.as_str()) == task.column_id.as_deref())
.and_then(|index| ordered_columns.get(index + 1))
.map(|column| column.id.clone());
let available_columns = if ordered_columns.is_empty() {
"- unavailable".to_string()
} else {
ordered_columns
.iter()
.map(|column| {
format!(
"- {} ({}) stage={} position={}",
column.id, column.name, column.stage, column.position
)
})
.collect::<Vec<_>>()
.join("\n")
};
let prompt = build_task_prompt(
task,
board
.map(|value| value.id.as_str())
.or(task.board_id.as_deref()),
next_column_id.as_deref(),
&available_columns,
);
let state_clone = state.clone();
let session_id_clone = session_id.clone();
let task_workspace = task.workspace_id.clone();
let provider_clone = provider.clone();
let cwd_clone = cwd.clone();
let _branch = branch.map(|value| value.to_string());
if let Err(error) = state
.acp_session_store
.set_first_prompt_sent(&session_id)
.await
{
tracing::error!(
target: "routa_kanban_prompt",
session_id = %session_id,
workspace_id = %task.workspace_id,
error = %error,
"kanban auto prompt failed to mark prompt dispatched"
);
} else {
tracing::info!(
target: "routa_kanban_prompt",
session_id = %session_id,
workspace_id = %task.workspace_id,
provider = %provider,
"kanban auto prompt marked prompt dispatched"
);
}
tracing::info!(
target: "routa_kanban_prompt",
session_id = %session_id_clone,
workspace_id = %task_workspace,
provider = %provider_clone,
cwd = %cwd_clone,
"kanban auto prompt scheduled"
);
tokio::spawn(async move {
tracing::info!(
target: "routa_kanban_prompt",
session_id = %session_id_clone,
workspace_id = %task_workspace,
provider = %provider_clone,
cwd = %cwd_clone,
"kanban auto prompt start"
);
if let Err(error) = state_clone
.acp_manager
.prompt(&session_id_clone, &prompt)
.await
{
tracing::error!(
"[kanban] Failed to auto-prompt ACP task session {} in workspace {} with provider {} at {}: {}",
session_id_clone,
task_workspace,
provider_clone,
cwd_clone,
error
);
return;
}
tracing::info!(
target: "routa_kanban_prompt",
session_id = %session_id_clone,
workspace_id = %task_workspace,
provider = %provider_clone,
"kanban auto prompt success"
);
if let Some(history) = state_clone
.acp_manager
.get_session_history(&session_id_clone)
.await
{
if let Err(error) = state_clone
.acp_session_store
.save_history(&session_id_clone, &history)
.await
{
tracing::error!(
target: "routa_kanban_prompt",
session_id = %session_id_clone,
workspace_id = %task_workspace,
error = %error,
"kanban auto prompt failed to persist history"
);
} else {
tracing::info!(
target: "routa_kanban_prompt",
session_id = %session_id_clone,
workspace_id = %task_workspace,
history_len = history.len(),
"kanban auto prompt persisted history"
);
}
}
});
apply_trigger_result(
task,
board,
step,
AgentTriggerResult {
session_id,
transport: "acp".to_string(),
external_task_id: None,
context_id: None,
},
);
Ok(())
}
async fn trigger_assigned_task_a2a_agent(
state: &AppState,
task: &mut Task,
board: Option<&KanbanBoard>,
step: Option<&KanbanAutomationStep>,
) -> Result<(), String> {
let step = step.ok_or_else(|| "A2A automation requires a resolved column step".to_string())?;
let agent_card_url = step
.agent_card_url
.as_deref()
.ok_or_else(|| "A2A automation requires agentCardUrl".to_string())?;
let auth_headers = resolve_a2a_auth_headers(step.auth_config_id.as_deref())?;
let mut ordered_columns = board.map(|value| value.columns.clone()).unwrap_or_default();
ordered_columns.sort_by_key(|column| column.position);
let next_column_id = ordered_columns
.iter()
.position(|column| Some(column.id.as_str()) == task.column_id.as_deref())
.and_then(|index| ordered_columns.get(index + 1))
.map(|column| column.id.clone());
let available_columns = if ordered_columns.is_empty() {
"- unavailable".to_string()
} else {
ordered_columns
.iter()
.map(|column| {
format!(
"- {} ({}) stage={} position={}",
column.id, column.name, column.stage, column.position
)
})
.collect::<Vec<_>>()
.join("\n")
};
let prompt = build_task_prompt(
task,
board
.map(|value| value.id.as_str())
.or(task.board_id.as_deref()),
next_column_id.as_deref(),
&available_columns,
);
let client = reqwest::Client::new();
let rpc_endpoint =
resolve_a2a_rpc_endpoint(&client, agent_card_url, auth_headers.as_ref()).await?;
let request_id = uuid::Uuid::new_v4().to_string();
let message_id = uuid::Uuid::new_v4().to_string();
let response = apply_a2a_auth_headers(
client
.post(&rpc_endpoint)
.header(CONTENT_TYPE, "application/json")
.header(ACCEPT, "application/json")
.json(&json!({
"jsonrpc": "2.0",
"id": request_id,
"method": "SendMessage",
"params": {
"message": {
"messageId": message_id,
"role": "user",
"parts": [
{ "text": prompt }
]
},
"metadata": {
"workspaceId": task.workspace_id,
"taskId": task.id,
"boardId": task.board_id,
"columnId": task.column_id,
"stepId": step.id,
"skillId": step.skill_id,
"authConfigId": step.auth_config_id,
"role": task.assigned_role,
}
}
})),
auth_headers.as_ref(),
)?
.send()
.await
.map_err(|error| format!("Failed to send A2A request: {error}"))?;
if !response.status().is_success() {
return Err(format!(
"A2A request failed with HTTP {}",
response.status().as_u16()
));
}
let payload: Value = response
.json()
.await
.map_err(|error| format!("Failed to decode A2A response: {error}"))?;
if let Some(error) = payload.get("error") {
let message = error
.get("message")
.and_then(Value::as_str)
.unwrap_or("unknown A2A error");
return Err(format!("A2A JSON-RPC error: {message}"));
}
let task_result = payload
.get("result")
.and_then(|value| value.get("task"))
.ok_or_else(|| "A2A response missing result.task".to_string())?;
let external_task_id = task_result
.get("id")
.and_then(Value::as_str)
.ok_or_else(|| "A2A response missing task.id".to_string())?
.to_string();
let context_id = task_result
.get("contextId")
.and_then(Value::as_str)
.map(ToOwned::to_owned);
let session_id = format!("a2a-{}", uuid::Uuid::new_v4());
apply_trigger_result(
task,
board,
Some(step),
AgentTriggerResult {
session_id: session_id.clone(),
transport: "a2a".to_string(),
external_task_id: Some(external_task_id.clone()),
context_id,
},
);
let state_clone = state.clone();
let task_id = task.id.clone();
let workspace_id = task.workspace_id.clone();
tokio::spawn(async move {
monitor_a2a_task_completion(
&state_clone,
&workspace_id,
&task_id,
&session_id,
&rpc_endpoint,
&external_task_id,
auth_headers,
)
.await;
});
Ok(())
}
#[derive(Debug)]
struct AgentTriggerResult {
session_id: String,
transport: String,
external_task_id: Option<String>,
context_id: Option<String>,
}
fn apply_trigger_result(
task: &mut Task,
board: Option<&KanbanBoard>,
step: Option<&KanbanAutomationStep>,
result: AgentTriggerResult,
) {
task.trigger_session_id = Some(result.session_id.clone());
if !task.session_ids.iter().any(|id| id == &result.session_id) {
task.session_ids.push(result.session_id.clone());
}
let column_name = board.and_then(|value| {
value.columns.iter().find_map(|column| {
(Some(column.id.as_str()) == task.column_id.as_deref()).then(|| column.name.clone())
})
});
let lane_session = TaskLaneSession {
session_id: result.session_id.clone(),
routa_agent_id: None,
column_id: task.column_id.clone(),
column_name,
step_id: step.map(|value| value.id.clone()),
step_index: None,
step_name: step
.and_then(|value| value.specialist_name.clone())
.or_else(|| task.assigned_specialist_name.clone()),
provider: task.assigned_provider.clone(),
role: task.assigned_role.clone(),
specialist_id: task.assigned_specialist_id.clone(),
specialist_name: task.assigned_specialist_name.clone(),
transport: Some(result.transport),
external_task_id: result.external_task_id,
context_id: result.context_id,
attempt: Some(1),
loop_mode: None,
completion_requirement: None,
objective: Some(task.objective.clone()),
last_activity_at: Some(Utc::now().to_rfc3339()),
recovered_from_session_id: None,
recovery_reason: None,
status: TaskLaneSessionStatus::Running,
started_at: Utc::now().to_rfc3339(),
completed_at: None,
};
if let Some(existing) = task
.lane_sessions
.iter_mut()
.find(|existing| existing.session_id == result.session_id)
{
*existing = lane_session;
} else {
task.lane_sessions.push(lane_session);
}
}
#[derive(Debug)]
struct A2ATaskTerminalUpdate {
status: TaskLaneSessionStatus,
completed_at: String,
last_activity_at: String,
context_id: Option<String>,
error: Option<String>,
}
async fn monitor_a2a_task_completion(
state: &AppState,
workspace_id: &str,
task_id: &str,
session_id: &str,
rpc_endpoint: &str,
external_task_id: &str,
auth_headers: Option<HashMap<String, String>>,
) {
let client = reqwest::Client::new();
let terminal = match wait_for_a2a_completion(
&client,
rpc_endpoint,
external_task_id,
auth_headers.as_ref(),
)
.await
{
Ok(terminal) => terminal,
Err(error) => {
let now = Utc::now().to_rfc3339();
let status = if error.contains("did not complete within") {
TaskLaneSessionStatus::TimedOut
} else {
TaskLaneSessionStatus::Failed
};
A2ATaskTerminalUpdate {
status,
completed_at: now.clone(),
last_activity_at: now,
context_id: None,
error: Some(error),
}
}
};
if let Err(error) =
reconcile_a2a_lane_session(state, task_id, session_id, external_task_id, terminal).await
{
tracing::warn!(
target: "routa_a2a",
workspace_id = %workspace_id,
task_id = %task_id,
session_id = %session_id,
external_task_id = %external_task_id,
error = %error,
"failed to persist A2A terminal state"
);
return;
}
emit_kanban_workspace_event(state, workspace_id, task_id).await;
}
async fn wait_for_a2a_completion(
client: &reqwest::Client,
rpc_endpoint: &str,
task_id: &str,
auth_headers: Option<&HashMap<String, String>>,
) -> Result<A2ATaskTerminalUpdate, String> {
let started_at = Instant::now();
loop {
let terminal = get_a2a_task_update(client, rpc_endpoint, task_id, auth_headers).await?;
if let Some(terminal) = terminal {
return Ok(terminal);
}
if started_at.elapsed() >= A2A_MAX_WAIT {
return Err(format!(
"A2A task {task_id} did not complete within {}ms",
A2A_MAX_WAIT.as_millis()
));
}
tokio::time::sleep(A2A_POLL_INTERVAL).await;
}
}
async fn get_a2a_task_update(
client: &reqwest::Client,
rpc_endpoint: &str,
task_id: &str,
auth_headers: Option<&HashMap<String, String>>,
) -> Result<Option<A2ATaskTerminalUpdate>, String> {
let request_id = uuid::Uuid::new_v4().to_string();
let response = apply_a2a_auth_headers(
client
.post(rpc_endpoint)
.header(CONTENT_TYPE, "application/json")
.header(ACCEPT, "application/json")
.json(&json!({
"jsonrpc": "2.0",
"id": request_id,
"method": "GetTask",
"params": { "id": task_id }
})),
auth_headers,
)?
.send()
.await
.map_err(|error| format!("Failed to poll A2A task: {error}"))?;
if !response.status().is_success() {
return Err(format!(
"A2A GetTask failed with HTTP {}",
response.status().as_u16()
));
}
let payload: Value = response
.json()
.await
.map_err(|error| format!("Failed to decode A2A task payload: {error}"))?;
if let Some(error) = payload.get("error") {
let message = error
.get("message")
.and_then(Value::as_str)
.unwrap_or("unknown A2A error");
return Err(format!("A2A JSON-RPC error: {message}"));
}
let task = payload
.get("result")
.and_then(|value| value.get("task"))
.ok_or_else(|| "A2A response missing result.task".to_string())?;
let state = task
.get("status")
.and_then(|value| value.get("state"))
.and_then(Value::as_str)
.ok_or_else(|| "A2A task missing status.state".to_string())?;
if !is_terminal_a2a_state(state) {
return Ok(None);
}
let timestamp = task
.get("status")
.and_then(|value| value.get("timestamp"))
.and_then(Value::as_str)
.map(ToOwned::to_owned)
.unwrap_or_else(|| Utc::now().to_rfc3339());
let context_id = task
.get("contextId")
.and_then(Value::as_str)
.map(ToOwned::to_owned);
let error = if state == "completed" {
None
} else {
Some(
extract_a2a_status_message(task)
.unwrap_or_else(|| format!("A2A task ended in state: {state}")),
)
};
Ok(Some(A2ATaskTerminalUpdate {
status: map_a2a_terminal_status(state),
completed_at: timestamp.clone(),
last_activity_at: timestamp,
context_id,
error,
}))
}
fn extract_a2a_status_message(task: &Value) -> Option<String> {
let parts = task
.get("status")
.and_then(|value| value.get("message"))
.and_then(|value| value.get("parts"))
.and_then(Value::as_array)?;
let text = parts
.iter()
.filter_map(|part| part.get("text").and_then(Value::as_str))
.map(str::trim)
.filter(|part| !part.is_empty())
.collect::<Vec<_>>()
.join(" ");
(!text.is_empty()).then_some(text)
}
fn is_terminal_a2a_state(state: &str) -> bool {
matches!(
state,
"completed" | "failed" | "canceled" | "rejected" | "auth-required"
)
}
fn map_a2a_terminal_status(state: &str) -> TaskLaneSessionStatus {
match state {
"completed" => TaskLaneSessionStatus::Completed,
_ => TaskLaneSessionStatus::Failed,
}
}
async fn reconcile_a2a_lane_session(
state: &AppState,
task_id: &str,
session_id: &str,
external_task_id: &str,
terminal: A2ATaskTerminalUpdate,
) -> Result<(), String> {
let mut task = wait_for_task_persistence(state, task_id, session_id).await?;
let lane_session = task
.lane_sessions
.iter_mut()
.find(|session| session.session_id == session_id)
.ok_or_else(|| format!("Task {task_id} missing lane session {session_id}"))?;
lane_session.status = terminal.status;
lane_session.completed_at = Some(terminal.completed_at.clone());
lane_session.last_activity_at = Some(terminal.last_activity_at.clone());
if lane_session.external_task_id.is_none() {
lane_session.external_task_id = Some(external_task_id.to_string());
}
if terminal.context_id.is_some() {
lane_session.context_id = terminal.context_id.clone();
}
if task.trigger_session_id.as_deref() == Some(session_id) {
task.trigger_session_id = None;
}
task.last_sync_error = terminal.error;
task.updated_at = Utc::now();
state
.task_store
.save(&task)
.await
.map_err(|error| format!("Failed to save A2A task reconciliation: {error}"))
}
async fn wait_for_task_persistence(
state: &AppState,
task_id: &str,
session_id: &str,
) -> Result<Task, String> {
for _ in 0..20 {
if let Some(task) = state
.task_store
.get(task_id)
.await
.map_err(|error| format!("Failed to load task {task_id}: {error}"))?
{
if task
.lane_sessions
.iter()
.any(|session| session.session_id == session_id)
{
return Ok(task);
}
}
tokio::time::sleep(Duration::from_millis(50)).await;
}
Err(format!(
"Task {task_id} did not persist lane session {session_id} before A2A reconciliation"
))
}
async fn emit_kanban_workspace_event(state: &AppState, workspace_id: &str, task_id: &str) {
state
.event_bus
.emit(AgentEvent {
event_type: AgentEventType::WorkspaceUpdated,
agent_id: "kanban-a2a".to_string(),
workspace_id: workspace_id.to_string(),
data: serde_json::json!({
"scope": "kanban",
"entity": "task",
"action": "updated",
"resourceId": task_id,
"source": "system",
}),
timestamp: Utc::now(),
})
.await;
}
async fn load_task_board(state: &AppState, task: &Task) -> Result<Option<KanbanBoard>, String> {
if let Some(board_id) = task.board_id.as_deref() {
state
.kanban_store
.get(board_id)
.await
.map_err(|error| format!("Failed to load Kanban board for automation: {error}"))
} else {
Ok(None)
}
}
fn resolve_task_automation_step(
board: Option<&KanbanBoard>,
task: &Task,
) -> Option<KanbanAutomationStep> {
board
.and_then(|value| {
value
.columns
.iter()
.find(|column| Some(column.id.as_str()) == task.column_id.as_deref())
})
.and_then(|column| column.automation.as_ref())
.filter(|automation| automation.enabled)
.and_then(|automation| automation.primary_step())
}
fn is_a2a_step(step: Option<&KanbanAutomationStep>) -> bool {
step.is_some_and(|value| {
matches!(value.transport, Some(KanbanTransport::A2a)) || value.agent_card_url.is_some()
})
}
fn resolve_a2a_auth_headers(
auth_config_id: Option<&str>,
) -> Result<Option<HashMap<String, String>>, String> {
let Some(auth_config_id) = auth_config_id
.map(str::trim)
.filter(|value| !value.is_empty())
else {
return Ok(None);
};
let raw = std::env::var(A2A_AUTH_CONFIGS_ENV).unwrap_or_default();
if raw.trim().is_empty() {
return Err(format!(
"A2A auth config \"{auth_config_id}\" was not found in {A2A_AUTH_CONFIGS_ENV}."
));
}
let parsed: Value = serde_json::from_str(&raw)
.map_err(|error| format!("Invalid {A2A_AUTH_CONFIGS_ENV} JSON: {error}"))?;
let config = parsed.get(auth_config_id).ok_or_else(|| {
format!("A2A auth config \"{auth_config_id}\" was not found in {A2A_AUTH_CONFIGS_ENV}.")
})?;
let headers = config.get("headers").unwrap_or(config);
let headers_obj = headers.as_object().ok_or_else(|| {
format!(
"{A2A_AUTH_CONFIGS_ENV}.{auth_config_id} must be a header map or contain a string header map in \"headers\"."
)
})?;
let mut resolved = HashMap::new();
for (name, value) in headers_obj {
let value = value.as_str().ok_or_else(|| {
format!("{A2A_AUTH_CONFIGS_ENV}.{auth_config_id} header {name} must be a string.")
})?;
resolved.insert(name.clone(), value.to_string());
}
Ok(Some(resolved))
}
fn apply_a2a_auth_headers(
mut request: reqwest::RequestBuilder,
auth_headers: Option<&HashMap<String, String>>,
) -> Result<reqwest::RequestBuilder, String> {
if let Some(auth_headers) = auth_headers {
for (name, value) in auth_headers {
let header_name = HeaderName::try_from(name.as_str())
.map_err(|error| format!("Invalid A2A auth header name {name}: {error}"))?;
let header_value = HeaderValue::from_str(value).map_err(|error| {
format!(
"Invalid A2A auth header value for {}: {}",
header_name.as_str(),
error
)
})?;
request = request.header(header_name, header_value);
}
}
Ok(request)
}
async fn resolve_a2a_rpc_endpoint(
client: &reqwest::Client,
url: &str,
auth_headers: Option<&HashMap<String, String>>,
) -> Result<String, String> {
if url.ends_with(".json") || url.ends_with("/agent-card") || url.ends_with("/card") {
let response = apply_a2a_auth_headers(
client.get(url).header(ACCEPT, "application/json"),
auth_headers,
)?
.send()
.await
.map_err(|error| format!("Failed to fetch A2A agent card: {error}"))?;
if !response.status().is_success() {
return Err(format!(
"A2A agent card fetch failed with HTTP {}",
response.status().as_u16()
));
}
let card: Value = response
.json()
.await
.map_err(|error| format!("Failed to decode A2A agent card: {error}"))?;
let rpc_url = card
.get("url")
.and_then(Value::as_str)
.ok_or_else(|| "A2A agent card missing url".to_string())?;
absolutize_url(url, rpc_url)
} else {
Ok(url.to_string())
}
}
fn absolutize_url(base_url: &str, maybe_relative: &str) -> Result<String, String> {
if maybe_relative.starts_with("http://") || maybe_relative.starts_with("https://") {
return Ok(maybe_relative.to_string());
}
let base = reqwest::Url::parse(base_url)
.map_err(|error| format!("Invalid base A2A URL {base_url}: {error}"))?;
base.join(maybe_relative)
.map(|url| url.to_string())
.map_err(|error| format!("Invalid relative A2A URL {maybe_relative}: {error}"))
}