refactor: migrate to new ISA implementation (#588)

This switches to a rewrite of indexer-selection that has been stripped
down to only concerning itself with picking candidates out of a valid
set. The new implementation removes a lot of long-standing
inefficiencies, and will be easier to iterate on changes to the ISA.

See https://github.com/edgeandnode/candidate-selection

A bunch of integration testing and production performance comparisons
will happen before this is released.

Cargo.toml

@@ -1,10 +1,5 @@
 [workspace]
-members = [
-    "graph-gateway",
-    "indexer-selection",
-    "gateway-common",
-    "gateway-framework",
-]
+members = ["graph-gateway", "gateway-common", "gateway-framework"]
 resolver = "2"
 
 [profile.release]

gateway-framework/Cargo.toml

@@ -9,12 +9,12 @@ alloy-sol-types = "0.6.2"
 anyhow.workspace = true
 axum.workspace = true
 ethers = "2.0.13"
+candidate-selection = { git = "ssh://[email protected]/edgeandnode/candidate-selection.git", rev = "c0b5efa" }
 eventuals = "0.6.7"
 gateway-common = { path = "../gateway-common" }
 graphql-http.workspace = true
 headers = "0.3.9"
 hex.workspace = true
-indexer-selection = { path = "../indexer-selection" }
 itertools = "0.12.1"
 lazy_static = "1.4.0"
 maxminddb = "0.24"

gateway-framework/src/budgets.rs

@@ -1,7 +1,7 @@
 use std::time::Duration;
 
+use candidate_selection::criteria::decay::DecayBuffer;
 use eventuals::{Eventual, EventualWriter};
-use indexer_selection::decay::DecayBuffer;
 use ordered_float::NotNan;
 use tokio::time::interval;
 use tokio::{select, spawn, sync::mpsc};

graph-gateway/Cargo.toml

@@ -20,7 +20,7 @@ graphql.workspace = true
 graphql-http.workspace = true
 headers = "0.3.9"
 hickory-resolver = "0.24.0"
-indexer-selection = { path = "../indexer-selection" }
+indexer-selection = { git = "ssh://[email protected]/edgeandnode/candidate-selection.git", rev = "0f711bc" }
 indoc = "2.0.4"
 itertools = "0.12.1"
 num-traits = "0.2.18"

graph-gateway/src/block_constraints.rs

@@ -13,9 +13,7 @@ use thegraph::types::BlockPointer;
 
 use gateway_framework::{block_constraints::BlockConstraint, errors::Error};
 
-pub fn block_constraints<'c>(
-    context: &'c Context<'c, String>,
-) -> Result<BTreeSet<BlockConstraint>, Error> {
+pub fn block_constraints(context: &Context<String>) -> Result<BTreeSet<BlockConstraint>, Error> {
     let mut constraints = BTreeSet::new();
     let vars = &context.variables;
     // ba6c90f1-3baf-45be-ac1c-f60733404436
@@ -64,7 +62,7 @@ pub fn block_constraints<'c>(
 }
 
 pub fn make_query_deterministic(
-    mut ctx: Context<'_, String>,
+    mut ctx: Context<String>,
     resolved: &BTreeSet<BlockPointer>,
     latest: &BlockPointer,
 ) -> Result<String, Error> {