use super::core::WorkflowExecutor;
use super::retry::*;
use super::types::*;
use super::utils::VARIABLE_REGEX;
use crate::prompts::build_plan_prompt;
use crate::t;
use crate::{DriverScheduler, TASK_STEP_SIGNAL_BUS, check_task_interruption};
use hippox_drivers::{DriverCall, DriverCallback, DriverContext, Executor};
use serde_json::Value;
use std::collections::HashMap;
use std::sync::Arc;
use std::time::Instant;
use tracing::info;
pub fn parse_plan_response(response: &str) -> anyhow::Result<PlanInstruction> {
let json_str = WorkflowExecutor::extract_json(response);
let instruction: PlanInstruction = serde_json::from_str(&json_str)?;
Ok(instruction)
}
fn resolve_value_ref(value_ref: &ValueRef, context: &Workflow) -> Value {
match value_ref {
ValueRef::Literal(value) => value.clone(),
ValueRef::Reference(ref_reference) => {
let path = &ref_reference.path;
if let Some(value) = context.get_variable(path) {
value.clone()
} else if path == "user_input" {
Value::Null
} else {
Value::Null
}
}
ValueRef::Expression(expr) => Value::String(expr.expr.clone()),
}
}
fn resolve_variables_deep(value: &Value, context: &HashMap<String, Value>) -> Value {
if let Some(s) = value.as_str() {
if s.contains("{{") && s.contains("}}") {
let mut result = s.to_string();
for cap in VARIABLE_REGEX.captures_iter(s) {
let var_name = &cap[1];
if let Some(val) = context.get(var_name) {
let replacement = if let Some(num) = val.as_f64() {
num.to_string()
} else if let Some(s) = val.as_str() {
s.to_string()
} else {
val.to_string()
};
result = result.replace(&format!("{{{{{}}}}}", var_name), &replacement);
}
}
return Value::String(result);
}
return Value::String(s.to_string());
}
if let Some(s) = value.as_str() {
if s.starts_with("{{") && s.ends_with("}}") {
let var_name = &s[2..s.len() - 2];
if let Some(val) = context.get(var_name) {
return val.clone();
}
return Value::String(s.to_string());
}
return Value::String(s.to_string());
}
if let Some(obj) = value.as_object() {
let mut new_obj = serde_json::Map::new();
for (k, v) in obj {
new_obj.insert(k.clone(), resolve_variables_deep(v, context));
}
return Value::Object(new_obj);
}
if let Some(arr) = value.as_array() {
let new_arr: Vec<Value> = arr.iter().map(|v| resolve_variables_deep(v, context)).collect();
return Value::Array(new_arr);
}
value.clone()
}
fn evaluate_condition(condition: &Condition, context: &Workflow) -> bool {
let left = resolve_value_ref(&condition.left, context);
let right = resolve_value_ref(&condition.right, context);
match condition.op.as_str() {
"eq" => left == right,
"ne" => left != right,
"gt" => {
if let (Some(left_num), Some(right_num)) = (left.as_u64(), right.as_u64()) {
left_num > right_num
} else if let (Some(left_num), Some(right_num)) = (left.as_f64(), right.as_f64()) {
left_num > right_num
} else {
false
}
}
"lt" => {
if let (Some(left_num), Some(right_num)) = (left.as_u64(), right.as_u64()) {
left_num < right_num
} else if let (Some(left_num), Some(right_num)) = (left.as_f64(), right.as_f64()) {
left_num < right_num
} else {
false
}
}
"contains" => left.as_str().map(|s| s.contains(right.as_str().unwrap_or(""))).unwrap_or(false),
_ => false,
}
}
async fn execute_plan_step_with_retry(
executor: &Executor,
call: DriverCall,
step_name: String,
step_id: &str,
step_index: usize,
task_id: Option<String>,
workflow_callback: &Option<Arc<dyn WorkflowCallback>>,
driver_callback_arc: Option<Arc<dyn DriverCallback>>,
max_retries: usize,
timeout_secs: u64,
on_error_action: Option<&str>,
) -> anyhow::Result<String> {
let mut retry_context = RetryContext::new(max_retries, DEFAULT_MAX_CONSECUTIVE_FAILURES);
let mut last_error = None;
loop {
let driver_context = DriverContext {
task_id: task_id.clone(),
driver_index: Some(step_index),
driver_name: Some(step_name.clone()),
extra: HashMap::new(),
signal_bus: Some(&TASK_STEP_SIGNAL_BUS),
};
let result = execute_driver_with_timeout(executor, &call, driver_callback_arc.clone(), Some(&driver_context), timeout_secs).await;
match result {
DriverExecutionResult::Success(output) => {
return Ok(output);
}
DriverExecutionResult::Timeout(ref error_msg) | DriverExecutionResult::Failure(ref error_msg) => {
let is_timeout = result.is_timeout();
if let Some(cb) = workflow_callback {
if let Some(ref tid) = task_id {
if is_timeout {
cb.on_step_timeout(tid, &step_name, step_index, error_msg, 0).await;
} else {
cb.on_step_failure(tid, &step_name, step_index, error_msg, 0).await;
}
}
}
last_error = Some(error_msg.clone());
if retry_context.can_retry(&step_name) {
info!("Retrying plan step '{}' (attempt {}/{})", step_name, retry_context.get_retry_count(&step_name), max_retries);
continue;
} else {
if let Some(action) = on_error_action {
if action == "skip" {
info!("Skipping plan step '{}' after {} retries", step_name, max_retries);
return Err(anyhow::anyhow!("SKIPPED: {}", last_error.unwrap_or_default()));
}
}
return Err(anyhow::anyhow!("Driver '{}' failed after {} retries: {}", step_name, max_retries, last_error.unwrap_or_default()));
}
}
}
}
}
async fn execute_workflow_plan(executor: &WorkflowExecutor, plan: &WorkflowPlan, task_id: Option<&str>) -> anyhow::Result<(String, usize, usize)> {
let mut context = Workflow::new();
for (key, value) in &plan.parameters {
context.set_variable(key, value.clone());
}
let mut string_context = HashMap::new();
let mut success_count = 0;
let mut failed_count = 0;
let driver_callback_arc: Option<Arc<dyn DriverCallback>> = executor.get_driver_callback();
let timeout_secs = get_timeout_secs(executor);
let max_retries = DEFAULT_MAX_RETRIES_PER_SKILL;
for (idx, step) in plan.steps.iter().enumerate() {
let checkpoint = serde_json::to_string(&WorkflowCheckpoint {
last_completed_step: idx,
variables: context.variables.clone(),
completed_results: vec![],
mode: WorkflowMode::PlanAndExecute,
metadata: HashMap::new(),
})
.ok();
match check_task_interruption(task_id, executor.get_workflow_callback(), idx, &step.action, checkpoint.clone()).await {
Ok(_) => {}
Err(result) => {
return Err(anyhow::anyhow!("{:?}", result));
}
}
if let Some(condition) = &step.condition {
if !evaluate_condition(condition, &context) {
info!("Step {} condition not met, skipping", step.id);
continue;
}
}
let mut resolved_params = HashMap::new();
for (key, value_ref) in &step.parameters {
let resolved = resolve_value_ref(value_ref, &context);
let final_resolved = resolve_variables_deep(&resolved, &string_context);
resolved_params.insert(key.clone(), final_resolved);
}
let call = DriverCall { action: step.action.clone(), parameters: resolved_params };
let on_error_action = step.on_error.as_ref().map(|e| e.action.as_str());
match execute_plan_step_with_retry(
executor.get_executor(),
call,
step.action.clone(),
&step.id,
idx,
task_id.map(|s| s.to_string()),
executor.get_workflow_callback(),
driver_callback_arc.clone(),
max_retries,
timeout_secs,
on_error_action,
)
.await
{
Ok(output) => {
if let Some(output_as) = &step.output_as {
context.set_variable(output_as, Value::String(output.clone()));
string_context.insert(output_as.clone(), Value::String(output.clone()));
}
context.add_step_result(WorkflowStepResult {
step_id: step.id.clone(),
driver: step.action.clone(),
input: step.parameters.iter().map(|(k, v)| (k.clone(), value_ref_to_value(v))).collect(),
output: output.clone(),
success: true,
error: None,
});
success_count += 1;
}
Err(e) => {
let error_msg = e.to_string();
if error_msg.starts_with("SKIPPED:") {
let actual_error = error_msg.trim_start_matches("SKIPPED:").trim();
context.add_step_result(WorkflowStepResult {
step_id: step.id.clone(),
driver: step.action.clone(),
input: step.parameters.iter().map(|(k, v)| (k.clone(), value_ref_to_value(v))).collect(),
output: String::new(),
success: false,
error: Some(actual_error.to_string()),
});
failed_count += 1;
info!("Plan step '{}' skipped after retries, continuing chain", step.id);
continue;
}
if let Some(error_handler) = &step.on_error {
match error_handler.action.as_str() {
"skip" => {
context.add_step_result(WorkflowStepResult {
step_id: step.id.clone(),
driver: step.action.clone(),
input: step.parameters.iter().map(|(k, v)| (k.clone(), value_ref_to_value(v))).collect(),
output: String::new(),
success: false,
error: Some(e.to_string()),
});
failed_count += 1;
info!("Plan step '{}' skipped via error handler, continuing chain", step.id);
continue;
}
"fail" => {
return Err(anyhow::anyhow!("Step {} failed: {}", step.id, e));
}
_ => {
return Err(anyhow::anyhow!("Step {} failed: {}", step.id, e));
}
}
} else {
return Err(anyhow::anyhow!("Step {} failed: {}", step.id, e));
}
}
}
}
let final_output = if let Some(last_result) = context.get_step_results().last() {
last_result.output.clone()
} else {
t!("driver.no_steps_executed").to_string()
};
Ok((final_output, success_count, failed_count))
}
fn value_ref_to_value(value_ref: &ValueRef) -> Value {
match value_ref {
ValueRef::Literal(value) => value.clone(),
ValueRef::Reference(ref_reference) => Value::String(format!("$ref:{}", ref_reference.path)),
ValueRef::Expression(expr) => Value::String(format!("$expr:{}", expr.expr)),
}
}
pub async fn execute_plan_and_execute_with_categories(
executor: &WorkflowExecutor,
scheduler: &DriverScheduler,
input: &str,
categories: &[String],
disabled_drivers: Option<&[String]>,
model: Option<&str>,
) -> WorkflowExecutionResult {
let overall_start = Instant::now();
let task_id = executor.get_task_id().map(|s| s.to_string());
let filtered_drivers = crate::prompts::generate_drivers_registry_by_categories(categories, disabled_drivers);
let plan_prompt = crate::prompts::build_plan_prompt_with_categories(&filtered_drivers, input);
let llm_response = match scheduler.generate_with_task(&plan_prompt, &task_id.clone().unwrap(), model).await {
Ok(resp) => resp,
Err(e) => {
return WorkflowExecutionResult::Failed { error: format!("{}: {}", t!("error.llm_error"), e), completed_steps: 0 };
}
};
let instruction = match parse_plan_response(&llm_response) {
Ok(instr) => instr,
Err(e) => {
return WorkflowExecutionResult::Failed { error: format!("Failed to parse plan: {}", e), completed_steps: 0 };
}
};
match instruction {
PlanInstruction { mode, plan, message } => {
if mode == "done" {
let final_msg = message.unwrap_or_else(|| t!("driver.no_actions_executed").to_string());
return WorkflowExecutionResult::Completed(final_msg);
}
if let Some(plan) = plan {
match execute_workflow_plan(executor, &plan, task_id.as_deref()).await {
Ok((result, success_count, failed_count)) => {
let raw_json = serde_json::json!({
"mode": "plan_and_execute",
"result": result,
"success_count": success_count,
"failed_count": failed_count,
})
.to_string();
WorkflowExecutionResult::CompletedWithRaw { display: result, raw_json }
}
Err(e) => {
let error_msg = e.to_string();
if error_msg.contains("Cancelled") {
return WorkflowExecutionResult::Cancelled { completed_steps: 0 };
} else if error_msg.contains("Paused") {
return WorkflowExecutionResult::Paused { checkpoint: None, completed_steps: 0, partial_output: String::new() };
}
WorkflowExecutionResult::Failed { error: format!("Workflow failed: {}", error_msg), completed_steps: 0 }
}
}
} else {
WorkflowExecutionResult::Completed(t!("driver.no_actions_executed").to_string())
}
}
}
}