fix: use solana-client pubsub lib instead of solana-shadow (#97)

Solana-shadow is not maintained anymore and doesn't work properly.
It drops many updates and after a certain amount of latency drops all
messages. We have been using Solana PubSub client in Hermes without any
problem and there is no reason to stick with solana-shadow.

Author: ali-behjati

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "pyth-agent"
-version = "2.4.0"
+version = "2.4.1"
 edition = "2021"
 
 [[bin]]
@@ -23,22 +23,21 @@ futures-util = { version = "0.3", default-features = false, features = [
 ] }
 jrpc = "0.4.1"
 serde_json = "1.0.79"
-tracing = "0.1.31"
 chrono = "0.4.31"
 chrono-tz = "0.8.4"
 parking_lot = "0.12.1"
 pyth-sdk = "0.7.0"
-pyth-sdk-solana = "0.7.1"
-solana-client = "1.13.6"
-solana-sdk = "1.13.6"
+pyth-sdk-solana = "0.7.2"
+solana-account-decoder = "1.14.16"
+solana-client = "1.14.16"
+solana-sdk = "1.14.16"
 bincode = "1.3.3"
 slog = { version = "2.7.0", features = ["max_level_trace", "release_max_level_trace"] }
 slog-term = "2.9.0"
 rand = "0.8.5"
 slog-async = "2.7.0"
 config = "0.13.3"
 thiserror = "1.0.32"
-solana-shadow = "0.2.4"
 clap = { version = "4.0.32", features = ["derive"] }
 humantime-serde = "1.1.1"
 slog-envlogger = "2.2.0"

Cargo.toml

@@ -48,14 +48,6 @@ key_store.program_key = "FsJ3A3u2vn5cTVofAjvy6y5kwABJAqYWpe4975bi2epH"
 # Oracle mapping pubkey
 key_store.mapping_key = "AHtgzX45WTKfkPG53L6WYhGEXwQkN1BVknET3sVsLL8J"
 
-# Duration of the interval at which to publish updates. Default interval is 1 seconds.
-# exporter.publish_interval_duration = "1s"
-
-# Price per compute unit offered for update_price transactions.
-# This is needed for solana to be able to land transactions on the network
-# during periods of high network congestion.
-exporter.compute_unit_price_micro_lamports = 40000
-
 # Compute unit limit requested per instruction for transactions that update the price.
 # This should be an upper bound of the compute units a single upd_price instruction might consume.
 # For solana mainnet, this should be set to 20000 instead of the default 40000 since there is no accumulator.
@@ -65,10 +57,10 @@ exporter.compute_unit_limit = 20000
 # This is needed for solana to be able to land transactions on the network
 # during periods of high network congestion.
 exporter.dynamic_compute_unit_pricing_enabled = true
-exporter.maximum_slot_gap_for_dynamic_compute_unit_price = 50
-exporter.maximum_total_compute_fee_micro_lamports = 10000000000
 
-# The interval with which to poll account information.
+# The interval with which to poll account information. We are adding it as an extra
+# layer of protection to ensure we get the latest account information if there are
+# any issues with the ws subscription.
 oracle.poll_interval_duration = "5s"
 
 # Configuration for the JRPC API