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use crate::{CliResult, DetermineAccountId, Error, Output};
use clap::Subcommand;
use divviup_client::{
dp_strategy::{self, PureDpBudget, PureDpDiscreteLaplace},
BigUint, DivviupClient, Histogram, NewTask, Ratio, SumVec, Uuid, Vdaf,
};
use humantime::{Duration, Timestamp};
use std::time::SystemTime;
use time::OffsetDateTime;
#[derive(clap::ValueEnum, Clone, Debug)]
pub enum VdafName {
Count,
Histogram,
Sum,
CountVec,
SumVec,
}
#[derive(clap::ValueEnum, Clone, Debug)]
pub enum DpStrategy {
PureDpDiscreteLaplace,
}
#[derive(Subcommand, Debug)]
pub enum TaskAction {
/// list all tasks for the target account
List,
/// retrieve details of a single task. this also refreshes cached data, such as metrics.
Get { task_id: String },
/// create a new task for the target account
Create {
#[arg(long)]
name: String,
#[arg(long)]
leader_aggregator_id: Uuid,
#[arg(long)]
helper_aggregator_id: Uuid,
#[arg(long)]
vdaf: VdafName,
#[arg(long)]
min_batch_size: u64,
#[arg(long)]
max_batch_size: Option<u64>,
#[arg(long, requires = "max_batch_size")]
batch_time_window_size: Option<Duration>,
#[arg(long)]
time_precision: Duration,
#[arg(long)]
collector_credential_id: Uuid,
#[arg(long, value_delimiter = ',')]
categorical_buckets: Option<Vec<String>>,
#[arg(long, value_delimiter = ',')]
continuous_buckets: Option<Vec<u64>>,
#[arg(long, required_if_eq_any([("vdaf", "count_vec"), ("vdaf", "sum_vec")]))]
length: Option<u64>,
#[arg(long, required_if_eq_any([("vdaf", "sum"), ("vdaf", "sum_vec")]))]
bits: Option<u8>,
#[arg(long)]
chunk_length: Option<u64>,
#[arg(long, requires = "differential_privacy_epsilon")]
differential_privacy_strategy: Option<DpStrategy>,
#[arg(long, requires = "differential_privacy_strategy")]
differential_privacy_epsilon: Option<f64>,
},
/// rename a task
Rename { task_id: String, name: String },
/// delete a task
Delete {
task_id: String,
/// delete the task even if the aggregators are unreachable
#[arg(long, action)]
force: bool,
},
/// set the expiration date of a task
SetExpiration {
task_id: String,
/// the date and time to set to.
///
/// if omitted, unset the expiration. the format is RFC 3339.
expiration: Option<Timestamp>,
/// set the expiration to the current time, effectively disabling the task.
#[arg(long, action, conflicts_with = "expiration")]
now: bool,
},
}
impl TaskAction {
pub(crate) async fn run(
self,
account_id: DetermineAccountId,
client: DivviupClient,
output: Output,
) -> CliResult {
let account_id = account_id.await?;
match self {
TaskAction::List => output.display(client.tasks(account_id).await?),
TaskAction::Get { task_id } => output.display(client.task(&task_id).await?),
TaskAction::Create {
name,
leader_aggregator_id,
helper_aggregator_id,
vdaf,
min_batch_size,
max_batch_size,
batch_time_window_size,
time_precision,
collector_credential_id,
categorical_buckets,
continuous_buckets,
length,
bits,
chunk_length,
differential_privacy_strategy,
differential_privacy_epsilon,
} => {
let vdaf = match vdaf {
VdafName::Count => {
if differential_privacy_strategy.is_some()
|| differential_privacy_epsilon.is_some()
{
return Err(Error::Other(
"differential privacy noise is not yet supported with Prio3Count"
.into(),
));
}
Vdaf::Count
}
VdafName::Histogram => {
let dp_strategy =
match (differential_privacy_strategy, differential_privacy_epsilon) {
(None, None) => dp_strategy::Prio3Histogram::NoDifferentialPrivacy,
(None, Some(_)) => {
return Err(Error::Other(
"missing differential-privacy-strategy".into(),
))
}
(Some(_), None) => {
return Err(Error::Other(
"missing differential-privacy-epsilon".into(),
))
}
(Some(DpStrategy::PureDpDiscreteLaplace), Some(epsilon)) => {
dp_strategy::Prio3Histogram::PureDpDiscreteLaplace(
PureDpDiscreteLaplace {
budget: PureDpBudget {
epsilon: float_to_biguint_ratio(epsilon)
.ok_or_else(|| {
Error::Other("invalid epsilon".into())
})?,
},
},
)
}
};
match (length, categorical_buckets, continuous_buckets) {
(Some(length), None, None) => Vdaf::Histogram(Histogram::Length {
length,
chunk_length,
dp_strategy,
}),
(None, Some(buckets), None) => {
Vdaf::Histogram(Histogram::Categorical {
buckets,
chunk_length,
dp_strategy,
})
}
(None, None, Some(buckets)) => Vdaf::Histogram(Histogram::Continuous {
buckets,
chunk_length,
dp_strategy,
}),
(None, None, None) => {
return Err(Error::Other("continuous-buckets, categorical-buckets, or length are required for histogram vdaf".into()));
}
_ => {
return Err(Error::Other("continuous-buckets, categorical-buckets, and length are mutually exclusive".into()));
}
}
}
VdafName::Sum => {
if differential_privacy_strategy.is_some()
|| differential_privacy_epsilon.is_some()
{
return Err(Error::Other(
"differential privacy noise is not yet supported with Prio3Sum"
.into(),
));
}
Vdaf::Sum {
bits: bits.unwrap(),
}
}
VdafName::CountVec => {
if differential_privacy_strategy.is_some()
|| differential_privacy_epsilon.is_some()
{
return Err(Error::Other(
"differential privacy noise is not supported with Prio3CountVec"
.into(),
));
}
Vdaf::CountVec {
length: length.unwrap(),
chunk_length,
}
}
VdafName::SumVec => {
let dp_strategy =
match (differential_privacy_strategy, differential_privacy_epsilon) {
(None, None) => dp_strategy::Prio3SumVec::NoDifferentialPrivacy,
(None, Some(_)) => {
return Err(Error::Other(
"missing differential-privacy-strategy".into(),
))
}
(Some(_), None) => {
return Err(Error::Other(
"missing differential-privacy-epsilon".into(),
))
}
(Some(DpStrategy::PureDpDiscreteLaplace), Some(epsilon)) => {
dp_strategy::Prio3SumVec::PureDpDiscreteLaplace(
PureDpDiscreteLaplace {
budget: PureDpBudget {
epsilon: float_to_biguint_ratio(epsilon)
.ok_or_else(|| {
Error::Other("invalid epsilon".into())
})?,
},
},
)
}
};
Vdaf::SumVec(SumVec::new(
bits.unwrap(),
length.unwrap(),
chunk_length,
dp_strategy,
))
}
};
let time_precision_seconds = time_precision.as_secs();
let batch_time_window_size_seconds =
batch_time_window_size.map(|window| window.as_secs());
let task = NewTask {
name,
leader_aggregator_id,
helper_aggregator_id,
vdaf,
min_batch_size,
max_batch_size,
batch_time_window_size_seconds,
time_precision_seconds,
collector_credential_id,
};
output.display(client.create_task(account_id, task).await?)
}
TaskAction::Rename { task_id, name } => {
output.display(client.rename_task(&task_id, &name).await?)
}
TaskAction::Delete { task_id, force } => {
if force {
client.force_delete_task(&task_id).await?
} else {
client.delete_task(&task_id).await?
}
}
TaskAction::SetExpiration {
task_id,
expiration,
now,
} => {
let expiration = if now {
Some(OffsetDateTime::now_utc())
} else {
expiration.map(|e| OffsetDateTime::from(Into::<SystemTime>::into(e)))
};
output.display(
client
.set_task_expiration(&task_id, expiration.as_ref())
.await?,
)
}
}
Ok(())
}
}
fn float_to_biguint_ratio(value: f64) -> Option<Ratio<BigUint>> {
let signed_ratio = Ratio::from_float(value)?;
let unsigned_ratio = Ratio::new(
signed_ratio.numer().clone().try_into().ok()?,
signed_ratio.denom().clone().try_into().ok()?,
);
Some(unsigned_ratio)
}