deps: replace derivative with educe

Cargo.toml

@@ -39,8 +39,8 @@ clap = { version = "4.5.21", features = ["cargo", "derive", "env"] }
 console-subscriber = "0.4.1"
 deadpool = "0.12.1"
 deadpool-postgres = "0.14.0"
-derivative = "2.2.0"
 divviup-client = "0.4"
+educe = { version = "0.6.0", default-features = false, features = ["Debug"] }
 fixed = "1.28"
 futures = "0.3.31"
 git-version = "0.3.9"

aggregator/Cargo.toml

@@ -48,7 +48,7 @@ clap.workspace = true
 console-subscriber = { workspace = true, optional = true }
 deadpool = { workspace = true, features = ["rt_tokio_1"] }
 deadpool-postgres = { workspace = true }
-derivative.workspace = true
+educe.workspace = true
 fixed = { workspace = true, optional = true }
 futures = { workspace = true }
 hex = { workspace = true, features = ["serde"] }

aggregator/src/aggregator/aggregation_job_driver.rs

@@ -16,7 +16,7 @@ use crate::{
 use anyhow::{anyhow, Result};
 use backoff::backoff::Backoff;
 use bytes::Bytes;
-use derivative::Derivative;
+use educe::Educe;
 use futures::future::BoxFuture;
 use janus_aggregator_core::{
     datastore::{
@@ -58,8 +58,8 @@ use tracing::{debug, error, info, info_span, trace_span, warn, Span};
 #[cfg(test)]
 mod tests;
 
-#[derive(Derivative)]
-#[derivative(Debug)]
+#[derive(Educe)]
+#[educe(Debug)]
 pub struct AggregationJobDriver<B> {
     // Configuration.
     batch_aggregation_shard_count: u64,
@@ -69,17 +69,17 @@ pub struct AggregationJobDriver<B> {
     http_client: reqwest::Client,
     backoff: B,
 
-    #[derivative(Debug = "ignore")]
+    #[educe(Debug(ignore))]
     aggregation_success_counter: Counter<u64>,
-    #[derivative(Debug = "ignore")]
+    #[educe(Debug(ignore))]
     aggregate_step_failure_counter: Counter<u64>,
-    #[derivative(Debug = "ignore")]
+    #[educe(Debug(ignore))]
     aggregated_report_share_dimension_histogram: Histogram<u64>,
-    #[derivative(Debug = "ignore")]
+    #[educe(Debug(ignore))]
     job_cancel_counter: Counter<u64>,
-    #[derivative(Debug = "ignore")]
+    #[educe(Debug(ignore))]
     job_retry_counter: Counter<u64>,
-    #[derivative(Debug = "ignore")]
+    #[educe(Debug(ignore))]
     http_request_duration_histogram: Histogram<f64>,
 }
 

aggregator/src/aggregator/collection_job_driver.rs

@@ -8,7 +8,7 @@ use crate::aggregator::{
 use anyhow::bail;
 use backoff::backoff::Backoff;
 use bytes::Bytes;
-use derivative::Derivative;
+use educe::Educe;
 use futures::future::{try_join_all, BoxFuture};
 use janus_aggregator_core::{
     datastore::{
@@ -42,13 +42,13 @@ use tokio::try_join;
 use tracing::{error, info, warn};
 
 /// Drives a collection job.
-#[derive(Derivative)]
-#[derivative(Debug)]
+#[derive(Educe)]
+#[educe(Debug)]
 pub struct CollectionJobDriver<B> {
     // Dependencies.
     http_client: reqwest::Client,
     backoff: B,
-    #[derivative(Debug = "ignore")]
+    #[educe(Debug(ignore))]
     metrics: CollectionJobDriverMetrics,
 
     // Configuration.

aggregator/src/aggregator/key_rotator.rs

@@ -7,7 +7,7 @@ use std::{
 use crate::aggregator::Config as AggregatorConfig; // used in doccomment.
 use crate::cache::GlobalHpkeKeypairCache;
 use anyhow::{anyhow, Error};
-use derivative::Derivative;
+use educe::Educe;
 use futures::{future::try_join_all, FutureExt};
 use janus_aggregator_core::datastore::{
     models::{GlobalHpkeKeypair, HpkeKeyState},
@@ -155,14 +155,14 @@ fn duration_since<C: Clock>(clock: &C, time: &Time) -> Duration {
 }
 
 /// In-memory representation of the `global_hpke_keys` table.
-#[derive(Derivative)]
-#[derivative(Debug)]
+#[derive(Educe)]
+#[educe(Debug)]
 struct HpkeKeyRotator<'a, C: Clock> {
     clock: C,
     config: &'a HpkeKeyRotatorConfig,
 
     // Data structures for intermediate state.
-    #[derivative(Debug = "ignore")]
+    #[educe(Debug(ignore))]
     available_ids: Box<dyn Iterator<Item = HpkeConfigId> + Send + Sync>,
     keypairs: HashMap<HpkeConfigId, GlobalHpkeKeypair>,
     initially_empty: bool,

aggregator/src/binaries/aggregator.rs

@@ -14,7 +14,7 @@ use crate::{
 };
 use anyhow::{anyhow, Context, Result};
 use clap::Parser;
-use derivative::Derivative;
+use educe::Educe;
 use janus_aggregator_api::{self, aggregator_api_handler};
 use janus_aggregator_core::datastore::Datastore;
 use janus_core::{auth_tokens::AuthenticationToken, time::RealClock, TokioRuntime};
@@ -240,9 +240,9 @@ impl BinaryOptions for Options {
 }
 
 /// Options for serving the aggregator API.
-#[derive(Clone, Derivative, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Clone, Educe, PartialEq, Eq, Serialize, Deserialize)]
 #[serde(deny_unknown_fields)]
-#[derivative(Debug)]
+#[educe(Debug)]
 pub struct AggregatorApi {
     /// Address on which this server should listen for connections to the Janus aggregator API
     /// and serve its API endpoints, independently from the address on which the DAP API is
@@ -256,7 +256,7 @@ pub struct AggregatorApi {
     pub path_prefix: Option<String>,
     /// Resource location at which the DAP service managed by this aggregator api can be found
     /// on the public internet. Required.
-    #[derivative(Debug(format_with = "std::fmt::Display::fmt"))]
+    #[educe(Debug(method(std::fmt::Display::fmt)))]
     pub public_dap_url: Url,
 }
 

aggregator/src/config.rs

@@ -2,7 +2,7 @@
 
 use crate::{metrics::MetricsConfiguration, trace::TraceConfiguration};
 use backoff::{ExponentialBackoff, ExponentialBackoffBuilder};
-use derivative::Derivative;
+use educe::Educe;
 use serde::{de::DeserializeOwned, Deserialize, Serialize};
 use std::{
     fmt::Debug,
@@ -77,12 +77,12 @@ pub trait BinaryConfig: Debug + DeserializeOwned {
 }
 
 /// Configuration for a Janus server using a database.
-#[derive(Clone, Derivative, PartialEq, Eq, Serialize, Deserialize)]
-#[derivative(Debug)]
+#[derive(Clone, Educe, PartialEq, Eq, Serialize, Deserialize)]
+#[educe(Debug)]
 #[serde(deny_unknown_fields)]
 pub struct DbConfig {
     /// URL at which to connect to the database.
-    #[derivative(Debug(format_with = "format_database_url"))]
+    #[educe(Debug(method(format_database_url)))]
     pub url: Url,
 
     /// Timeout in seconds to apply when creating, waiting for, or recycling

aggregator/src/diagnostic.rs

@@ -1,15 +1,15 @@
 //! Writing diagnostic files to disk.
 
 use anyhow::Context;
-use derivative::Derivative;
+use educe::Educe;
 use janus_messages::{AggregationJobId, ReportMetadata, TaskId};
 use serde::{Deserialize, Deserializer, Serialize, Serializer};
 use std::{fs::File, path::Path, time::SystemTime};
 use uuid::Uuid;
 
 /// Represents an illegal attempt to mutate an aggregation job.
-#[derive(Derivative, Clone, Serialize, Deserialize)]
-#[derivative(Debug)]
+#[derive(Educe, Clone, Serialize, Deserialize)]
+#[educe(Debug)]
 pub struct AggregationJobInitForbiddenMutationEvent {
     /// The ID of the task.
     #[serde(with = "serialize_task_id")]
@@ -21,7 +21,7 @@ pub struct AggregationJobInitForbiddenMutationEvent {
 
     /// The SHA-256 of the request that created the aggregation job.
     #[serde(with = "serialize_hash_option")]
-    #[derivative(Debug(format_with = "fmt_hash_option"))]
+    #[educe(Debug(method(fmt_hash_option)))]
     pub original_request_hash: Option<[u8; 32]>,
 
     /// The ordered report metadatas from the request that created the aggregation job.
@@ -36,7 +36,7 @@ pub struct AggregationJobInitForbiddenMutationEvent {
 
     /// The SHA-256 of the request that attempted to mutate the aggregation job.
     #[serde(with = "serialize_hash_option")]
-    #[derivative(Debug(format_with = "fmt_hash_option"))]
+    #[educe(Debug(method(fmt_hash_option)))]
     pub mutating_request_hash: Option<[u8; 32]>,
 
     /// The ordered report metadatas from the request that attempted to mutate the aggregation job.