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use crate::problem::KurobakoProblemRecipe;
use crate::runner::{StudyRunner, StudyRunnerOptions};
use crate::solver::{KurobakoSolver, KurobakoSolverRecipe};
use crate::variable::{VarPath, Variable};
use kurobako_core::parameter::{ParamDomain, ParamValue};
use kurobako_core::problem::{
BoxProblem, Evaluate, EvaluatorCapability, Problem, ProblemRecipe, ProblemSpec, Values,
};
use kurobako_core::solver::{Solver, SolverRecipe, SolverSpec};
use kurobako_core::{json, Error, Result};
use serde::{Deserialize, Serialize};
use serde_json;
use std::collections::HashMap;
use std::num::NonZeroU64;
use structopt::StructOpt;
use yamakan::budget::Budget;
use yamakan::observation::ObsId;
#[derive(Debug, Clone, StructOpt, Serialize, Deserialize)]
pub struct ExamRecipe {
#[structopt(long, parse(try_from_str = "json::parse_json"))]
pub solver: KurobakoSolverRecipe,
#[structopt(long, parse(try_from_str = "json::parse_json"))]
pub problem: KurobakoProblemRecipe,
#[serde(flatten)]
#[structopt(flatten)]
pub runner: StudyRunnerOptions,
}
impl ExamRecipe {
fn bind(&self, vals: &Vals) -> Result<Self> {
let mut recipe = track!(serde_json::to_value(self.clone()).map_err(Error::from))?;
track!(Self::bind_recur(&mut recipe, vals, &mut VarPath::new()))?;
track!(serde_json::from_value(recipe).map_err(Error::from))
}
fn bind_recur(recipe: &mut serde_json::Value, vals: &Vals, path: &mut VarPath) -> Result<()> {
if let Some(val) = vals.get(path) {
*recipe = track!(val.to_json_value())?;
} else {
match recipe {
serde_json::Value::Array(a) => {
for (i, v) in a.iter_mut().enumerate() {
path.push(i.to_string());
track!(Self::bind_recur(v, vals, path))?;
path.pop();
}
}
serde_json::Value::Object(o) => {
for (k, v) in o {
path.push(k.to_owned());
track!(Self::bind_recur(v, vals, path))?;
path.pop();
}
}
_ => {}
}
}
Ok(())
}
}
type Vars = Vec<ParamDomain>;
type Vals = HashMap<VarPath, ParamValue>;
#[derive(Debug, Clone, StructOpt, Serialize, Deserialize)]
pub struct ExamProblemRecipe {
#[structopt(long)]
pub recipe: json::JsonValue,
#[structopt(long, parse(try_from_str = "json::parse_json"))]
pub vars: Vec<Variable>,
}
impl ProblemRecipe for ExamProblemRecipe {
type Problem = ExamProblem;
fn create_problem(&self) -> Result<Self::Problem> {
let exam: ExamRecipe =
track!(serde_json::from_value(self.recipe.get().clone()).map_err(Error::from))?;
let problem = track!(exam.problem.create_problem())?.specification();
let solver = track!(exam.solver.create_solver(problem.clone()))?.specification();
Ok(ExamProblem {
exam,
vars: self
.vars
.iter()
.map(|v| track!(v.to_param_domain()))
.collect::<Result<_>>()?,
problem,
solver,
})
}
}
#[derive(Debug)]
pub struct ExamProblem {
exam: ExamRecipe,
vars: Vars,
problem: ProblemSpec,
solver: SolverSpec,
}
impl Problem for ExamProblem {
type Evaluator = ExamEvaluator;
fn specification(&self) -> ProblemSpec {
let evaluation_expense =
NonZeroU64::new(self.exam.runner.budget as u64 * self.problem.evaluation_expense.get())
.unwrap_or_else(|| unimplemented!());
ProblemSpec {
name: format!("exam/{}/{}", self.solver.name, self.problem.name),
version: None,
params_domain: self.vars.clone(),
values_domain: self.problem.values_domain.clone(),
evaluation_expense,
capabilities: vec![EvaluatorCapability::Concurrent].into_iter().collect(),
}
}
fn create_evaluator(&mut self, _id: ObsId) -> Result<Self::Evaluator> {
Ok(ExamEvaluator::NotStarted {
exam: self.exam.clone(),
vars: self.vars.clone(),
})
}
}
#[derive(Debug)]
pub enum ExamEvaluator {
NotStarted {
exam: ExamRecipe,
vars: Vars,
},
Running {
runner: StudyRunner<KurobakoSolver, BoxProblem>,
},
}
impl Evaluate for ExamEvaluator {
fn evaluate(&mut self, params: &[ParamValue], budget: &mut Budget) -> Result<Values> {
loop {
let next = match self {
ExamEvaluator::NotStarted { exam, vars } => {
let vals = vars
.iter()
.zip(params.iter())
.map(|(var, param)| {
let path = track!(var.name().parse())
.unwrap_or_else(|e| unreachable!("{}", e));
(path, param.clone())
})
.collect();
debug!("Before bind: {:?}", exam);
let exam = track!(exam.bind(&vals))?;
debug!("After bind: {:?}", exam);
let runner =
track!(StudyRunner::new(&exam.solver, &exam.problem, &exam.runner))?;
ExamEvaluator::Running { runner }
}
ExamEvaluator::Running { runner } => {
track!(runner.run_once(budget))?;
loop {
trace!("Study: {:?}", runner.study());
if let Some(v) = runner.study().best_value() {
debug!(
"Evaluated: budget={:?}, params={:?}, value={:?}",
budget,
params,
v.get()
);
return Ok(vec![v]);
}
budget.amount = budget.consumption + 1;
track!(runner.run_once(budget))?;
}
}
};
*self = next;
}
}
}