progress: Work on serializing and deserializing data structures, as well as disk storage
This commit is contained in:
Nicholas Novak
parent
63ff6e7c2c
commit
7419412be4
171
Cargo.lock
generated
171
Cargo.lock
generated
@ -120,7 +120,7 @@ dependencies = [
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"arrow-schema",
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"chrono",
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"half",
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"hashbrown",
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"hashbrown 0.14.0",
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"num",
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]
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@ -355,6 +355,7 @@ dependencies = [
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"android-tzdata",
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"iana-time-zone",
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"num-traits",
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"serde",
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"windows-targets",
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]
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@ -447,6 +448,57 @@ version = "0.2.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7a81dae078cea95a014a339291cec439d2f232ebe854a9d672b796c6afafa9b7"
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[[package]]
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name = "darling"
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version = "0.20.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "0209d94da627ab5605dcccf08bb18afa5009cfbef48d8a8b7d7bdbc79be25c5e"
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dependencies = [
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"darling_core",
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"darling_macro",
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]
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[[package]]
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name = "darling_core"
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version = "0.20.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "177e3443818124b357d8e76f53be906d60937f0d3a90773a664fa63fa253e621"
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dependencies = [
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"fnv",
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"ident_case",
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"proc-macro2",
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"quote",
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"strsim",
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"syn",
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]
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[[package]]
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name = "darling_macro"
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version = "0.20.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "836a9bbc7ad63342d6d6e7b815ccab164bc77a2d95d84bc3117a8c0d5c98e2d5"
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dependencies = [
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"darling_core",
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"quote",
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"syn",
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]
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[[package]]
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name = "deranged"
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version = "0.3.9"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "0f32d04922c60427da6f9fef14d042d9edddef64cb9d4ce0d64d0685fbeb1fd3"
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dependencies = [
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"powerfmt",
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"serde",
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]
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[[package]]
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name = "equivalent"
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version = "1.0.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"
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[[package]]
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name = "flatbuffers"
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version = "23.5.26"
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@ -543,6 +595,12 @@ dependencies = [
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"num-traits",
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]
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[[package]]
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name = "hashbrown"
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version = "0.12.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
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[[package]]
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name = "hashbrown"
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version = "0.14.0"
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@ -561,6 +619,12 @@ version = "0.3.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d77f7ec81a6d05a3abb01ab6eb7590f6083d08449fe5a1c8b1e620283546ccb7"
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[[package]]
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name = "hex"
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version = "0.4.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
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[[package]]
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name = "http"
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version = "0.2.9"
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@ -641,6 +705,34 @@ dependencies = [
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"cc",
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]
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[[package]]
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name = "ident_case"
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version = "1.0.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"
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[[package]]
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name = "indexmap"
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version = "1.9.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "bd070e393353796e801d209ad339e89596eb4c8d430d18ede6a1cced8fafbd99"
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dependencies = [
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"autocfg",
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"hashbrown 0.12.3",
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"serde",
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]
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[[package]]
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name = "indexmap"
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version = "2.0.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "ad227c3af19d4914570ad36d30409928b75967c298feb9ea1969db3a610bb14e"
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dependencies = [
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"equivalent",
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"hashbrown 0.14.0",
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"serde",
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]
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[[package]]
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name = "integer-encoding"
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version = "3.0.4"
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@ -941,7 +1033,7 @@ dependencies = [
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"bytes",
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"chrono",
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"flate2",
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"hashbrown",
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"hashbrown 0.14.0",
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"lz4",
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"num",
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"num-bigint",
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@ -1003,6 +1095,12 @@ version = "0.3.27"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "26072860ba924cbfa98ea39c8c19b4dd6a4a25423dbdf219c1eca91aa0cf6964"
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[[package]]
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name = "powerfmt"
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version = "0.2.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
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[[package]]
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name = "ppv-lite86"
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version = "0.2.17"
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@ -1111,6 +1209,15 @@ dependencies = [
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"serde_derive",
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]
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[[package]]
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name = "serde-big-array"
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version = "0.5.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "11fc7cc2c76d73e0f27ee52abbd64eec84d46f370c88371120433196934e4b7f"
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dependencies = [
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"serde",
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]
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[[package]]
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name = "serde_arrays"
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version = "0.1.0"
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@ -1164,6 +1271,35 @@ dependencies = [
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"serde",
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]
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[[package]]
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name = "serde_with"
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version = "3.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "64cd236ccc1b7a29e7e2739f27c0b2dd199804abc4290e32f59f3b68d6405c23"
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dependencies = [
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"base64",
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"chrono",
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"hex",
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"indexmap 1.9.3",
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"indexmap 2.0.1",
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"serde",
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"serde_json",
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"serde_with_macros",
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"time",
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]
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[[package]]
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name = "serde_with_macros"
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version = "3.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "93634eb5f75a2323b16de4748022ac4297f9e76b6dced2be287a099f41b5e788"
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dependencies = [
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"darling",
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"proc-macro2",
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"quote",
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"syn",
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]
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[[package]]
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name = "snap"
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version = "1.1.0"
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@ -1200,8 +1336,10 @@ dependencies = [
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"parquet",
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"rand",
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"serde",
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"serde-big-array",
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"serde_arrays",
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"serde_json",
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"serde_with",
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"tokio",
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]
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@ -1245,6 +1383,35 @@ dependencies = [
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"ordered-float",
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]
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[[package]]
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name = "time"
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version = "0.3.30"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c4a34ab300f2dee6e562c10a046fc05e358b29f9bf92277f30c3c8d82275f6f5"
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dependencies = [
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"deranged",
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"itoa",
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"powerfmt",
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"serde",
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"time-core",
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"time-macros",
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]
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[[package]]
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name = "time-core"
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version = "0.1.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "ef927ca75afb808a4d64dd374f00a2adf8d0fcff8e7b184af886c3c87ec4a3f3"
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[[package]]
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name = "time-macros"
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version = "0.2.15"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "4ad70d68dba9e1f8aceda7aa6711965dfec1cac869f311a51bd08b3a2ccbce20"
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dependencies = [
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"time-core",
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]
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[[package]]
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name = "tiny-keccak"
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version = "2.0.2"
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@ -12,6 +12,8 @@ clap = { version = "4.4.5", features = ["derive"] }
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parquet = "47.0.0"
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rand = "0.8.5"
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serde = { version = "1.0.189", features = ["derive"] }
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serde-big-array = "0.5.1"
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serde_arrays = "0.1.0"
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serde_json = "1.0.107"
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serde_with = "3.4.0"
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tokio = { version = "1.32.0", features = ["macros", "rt-multi-thread"] }
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@ -1,5 +1,9 @@
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#![feature(test)]
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extern crate serde;
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#[macro_use]
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extern crate serde_big_array;
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mod simple_server;
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mod storage;
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mod storage_server;
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@ -1,3 +1,4 @@
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use crate::storage::disk_storage::ChunkStorageCache;
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use crate::storage::world::{BlockID, BlockPos, BlockRange, ChunkData, ChunkPos};
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use crate::storage_server::StorageServer;
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@ -9,66 +10,49 @@ struct MultipleBlocks {
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#[derive(Debug)]
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pub struct SimpleServer {
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chunks: Vec<ChunkData>,
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// block_ranges: Vec<MultipleBlocks>,
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chunk_storage: ChunkStorageCache,
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}
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impl SimpleServer {
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pub fn new() -> Self {
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SimpleServer {
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chunks: Vec::new(),
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// block_ranges: Vec::new(),
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chunk_storage: ChunkStorageCache::new(),
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}
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}
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pub fn num_chunks(&self) -> usize {
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self.chunks.len()
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unimplemented!()
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}
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fn chunk_at_block_mut(&mut self, block_pos: &BlockPos) -> Option<&mut ChunkData> {
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// Find what chunk the block is in
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fn chunk_at(&mut self, block_pos: &BlockPos) -> Option<ChunkData> {
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let chunk_pos = ChunkPos::from(block_pos);
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// Find the chunk with the correct index
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for chunk in self.chunks.iter_mut() {
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if chunk.pos == chunk_pos {
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return Some(chunk);
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}
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}
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let chunk = self
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.chunk_storage
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.fetch_chunk_by_pos(&chunk_pos)
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.expect("Finding chunk failed");
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None
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}
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fn chunk_at(&self, block_pos: &BlockPos) -> Option<&ChunkData> {
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let chunk_pos = ChunkPos::from(block_pos);
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for chunk in self.chunks.iter() {
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if chunk.pos == chunk_pos {
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return Some(chunk);
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}
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}
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None
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Some(chunk)
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}
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fn create_chunk_at(&mut self, chunk_pos: &ChunkPos) {
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let new_chunk = ChunkData::new(chunk_pos);
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self.chunks.push(new_chunk);
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self.chunk_storage
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.fetch_chunk_by_pos(&chunk_pos)
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.expect("Creatinc chunk failed");
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}
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}
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impl StorageServer for SimpleServer {
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fn change_block(&mut self, target_state: BlockID, world_position: &BlockPos) {
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let mut chunk = self.chunk_at_block_mut(world_position);
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let mut chunk = self.chunk_at(world_position);
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// Test if there is a chunk that already exists
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if chunk.is_none() {
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self.create_chunk_at(&ChunkPos::from(world_position));
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chunk = self.chunk_at_block_mut(world_position);
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chunk = self.chunk_at(world_position);
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}
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let chunk = chunk.expect("Could not find chunk");
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let mut chunk = chunk.expect("Could not find chunk");
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// Find the section that the block is located in
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let current_section = &mut chunk.sections[world_position.y % 16];
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@ -79,16 +63,9 @@ impl StorageServer for SimpleServer {
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fn change_block_range(&mut self, target_stage: BlockID, start: &BlockPos, end: &BlockPos) {
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unimplemented!()
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// self.block_ranges.push(MultipleBlocks {
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// id: target_stage,
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// range: BlockRange {
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// start: start.clone(),
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// end: end.clone(),
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// },
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// })
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}
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fn read_block_at(&self, pos: &BlockPos) -> BlockID {
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fn read_block_at(&mut self, pos: &BlockPos) -> BlockID {
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let chunk = self.chunk_at(pos);
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if let Some(chunk) = chunk {
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@ -97,12 +74,6 @@ impl StorageServer for SimpleServer {
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return chunk_section.get_block_at_index(pos).clone();
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}
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// for blocks in self.block_ranges.iter() {
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// if blocks.range.within_range(&pos) {
|
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// return blocks.id.clone();
|
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// }
|
||||
// }
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|
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BlockID::Empty
|
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}
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}
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@ -1,19 +1,18 @@
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use super::world::{BlockID, ChunkData, ChunkPos};
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use super::world::{ChunkData, ChunkPos};
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use std::cmp::Ordering;
|
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use std::error::Error;
|
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use std::io::{BufReader, ErrorKind, Write};
|
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use std::{collections::HashMap, fs::File, time::Instant};
|
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|
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const DATABASE_FILE_LOCATION: &str = "./persistence";
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||||
|
||||
struct ChunkFile {}
|
||||
|
||||
const CACHED_CHUNK_FILES: usize = 1;
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|
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/// `ChunkStorageCache` caches a list of the most recently used file handles
|
||||
/// where chunks are stored from, and allows for faster accessing of the data
|
||||
/// from chunks
|
||||
struct ChunkStorageCache {
|
||||
#[derive(Debug)]
|
||||
pub struct ChunkStorageCache {
|
||||
// `cached_chunk_files` is a vector of cached file handles that are already open
|
||||
cached_chunk_files: [File; CACHED_CHUNK_FILES],
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||||
cached_chunk_files: [Option<File>; CACHED_CHUNK_FILES],
|
||||
// `cached_file_names` is a list of all the filenames that are contained
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||||
// within the cache
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||||
cached_file_names: HashMap<String, usize>,
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@ -21,8 +20,46 @@ struct ChunkStorageCache {
|
||||
}
|
||||
|
||||
impl ChunkStorageCache {
|
||||
fn load_chunk_file(&mut self, file_name: &str) -> &File {
|
||||
let chunk_file = File::open(file_name).expect("Opening file for chunk failed");
|
||||
pub fn new() -> Self {
|
||||
ChunkStorageCache {
|
||||
cached_chunk_files: [None; CACHED_CHUNK_FILES],
|
||||
cached_file_names: HashMap::new(),
|
||||
last_used_times: [Instant::now(); CACHED_CHUNK_FILES],
|
||||
}
|
||||
}
|
||||
|
||||
/// `load_chunk_file` is called whenever a file is missing in the file cache
|
||||
/// and needs to be loaded from disk
|
||||
///
|
||||
/// This replaces a slot for another file in the cache, according to the
|
||||
/// caching strategy
|
||||
fn load_chunk_file(&mut self, chunk_pos: &ChunkPos, file_name: &str) -> &File {
|
||||
let chunk_file = File::options().write(true).read(true).open(file_name);
|
||||
|
||||
let chunk_file = match chunk_file {
|
||||
Ok(file) => file,
|
||||
Err(err) => match err.kind() {
|
||||
ErrorKind::NotFound => {
|
||||
let mut new_chunk_file = File::options()
|
||||
.write(true)
|
||||
.read(true)
|
||||
.create(true)
|
||||
.open(file_name)
|
||||
.expect("Opening new chunk file failed");
|
||||
|
||||
let blank_chunk = ChunkData::new(chunk_pos);
|
||||
|
||||
let encoded_chunk = serde_json::to_string(&blank_chunk).unwrap();
|
||||
|
||||
new_chunk_file
|
||||
.write_all(encoded_chunk.as_bytes())
|
||||
.expect("Error writing data to chunk");
|
||||
|
||||
new_chunk_file
|
||||
}
|
||||
err => panic!("Opening new file for chunk failed with: {:?}", err),
|
||||
},
|
||||
};
|
||||
|
||||
// Add the newly opened file to the cache
|
||||
|
||||
@ -45,21 +82,23 @@ impl ChunkStorageCache {
|
||||
// * Replace the last used time with the curent time
|
||||
// * Replace the open file with the current one
|
||||
|
||||
// Find the name of the previous entry
|
||||
let (previous_file_name, _) = self
|
||||
.cached_file_names
|
||||
.iter()
|
||||
.find(|(_, &array_index)| array_index == last_used_index)
|
||||
.expect("The last used index should always have a name");
|
||||
if !self.cached_file_names.is_empty() {
|
||||
// Find the name of the previous entry
|
||||
let (previous_file_name, _) = self
|
||||
.cached_file_names
|
||||
.iter()
|
||||
.find(|(_, &array_index)| array_index == last_used_index)
|
||||
.expect("The last used index should always have a name");
|
||||
|
||||
self.cached_file_names.remove(&previous_file_name.clone());
|
||||
self.cached_file_names.remove(&previous_file_name.clone());
|
||||
}
|
||||
self.cached_file_names
|
||||
.insert(file_name.to_string(), last_used_index);
|
||||
// Replace the timestamp with the new timestamp
|
||||
self.last_used_times[last_used_index] = Instant::now();
|
||||
self.cached_chunk_files[last_used_index] = chunk_file;
|
||||
self.cached_chunk_files[last_used_index] = Some(chunk_file);
|
||||
|
||||
&self.cached_chunk_files[last_used_index]
|
||||
self.cached_chunk_files[last_used_index].as_ref().unwrap()
|
||||
}
|
||||
|
||||
/// `fetch_chunk_by_pos` takes in the position of a chunk, and returns the
|
||||
@ -67,16 +106,23 @@ impl ChunkStorageCache {
|
||||
///
|
||||
/// This operation is cached, if possible, so that subsequent accesses to
|
||||
/// the same chunk are handled by the same file
|
||||
pub fn fetch_chunk_by_pos(&mut self, pos: &ChunkPos) -> ChunkData {
|
||||
pub fn fetch_chunk_by_pos(&mut self, pos: &ChunkPos) -> Result<ChunkData, Box<dyn Error>> {
|
||||
let file_name = pos.storage_file_name();
|
||||
|
||||
let file_index = self.cached_file_names.get(file_name.as_str());
|
||||
|
||||
let chunk_file = match file_index {
|
||||
Some(index) => &self.cached_chunk_files[*index],
|
||||
None => self.load_chunk_file(file_name.as_str()),
|
||||
Some(index) => self.cached_chunk_files[*index].as_ref().unwrap(),
|
||||
None => self.load_chunk_file(pos, file_name.as_str()),
|
||||
};
|
||||
|
||||
panic!("Yes");
|
||||
let file_contents = std::io::read_to_string(chunk_file)?;
|
||||
|
||||
let read_data: ChunkData = serde_json::from_str(file_contents.as_str())?;
|
||||
|
||||
// let read_data: ChunkData = serde_json::from_reader(&mut file_buffer)?;
|
||||
// let read_data = ChunkData::new(&ChunkPos { x: 0, z: 0 });
|
||||
|
||||
Ok(read_data)
|
||||
}
|
||||
}
|
||||
|
||||
@ -1,3 +1,3 @@
|
||||
mod chunk_compression;
|
||||
mod disk_storage;
|
||||
pub mod disk_storage;
|
||||
pub mod world;
|
||||
|
||||
@ -1,17 +1,21 @@
|
||||
use core::fmt;
|
||||
use serde::ser;
|
||||
use serde::ser::{SerializeSeq, SerializeStruct, Serializer};
|
||||
use serde::Serialize;
|
||||
use serde::{Deserialize, Serialize};
|
||||
use std::{
|
||||
cmp::{max, min},
|
||||
fmt::Debug,
|
||||
fs::File,
|
||||
};
|
||||
|
||||
use serde_big_array::BigArray;
|
||||
|
||||
const SECTIONS_PER_CHUNK: usize = 16;
|
||||
const SLICE_SIZE: usize = 16 * 16;
|
||||
|
||||
#[derive(Debug, Clone, PartialEq, Serialize)]
|
||||
const DATABASE_FILE_LOCATION: &str = "./persistence";
|
||||
|
||||
#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
|
||||
pub struct ChunkPos {
|
||||
pub x: isize,
|
||||
pub z: isize,
|
||||
@ -28,29 +32,30 @@ impl From<&BlockPos> for ChunkPos {
|
||||
|
||||
impl ChunkPos {
|
||||
pub fn storage_file_name(&self) -> String {
|
||||
format!("{}.{}.chunk", self.x, self.z)
|
||||
format!("{DATABASE_FILE_LOCATION}/{}.{}.chunk", self.x, self.z)
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
#[derive(Debug, Serialize, Deserialize)]
|
||||
pub struct ChunkData {
|
||||
pub pos: ChunkPos,
|
||||
#[serde(with = "serde_arrays")]
|
||||
pub sections: [ChunkSection; SECTIONS_PER_CHUNK],
|
||||
}
|
||||
|
||||
impl Serialize for ChunkData {
|
||||
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
|
||||
where
|
||||
S: serde::Serializer,
|
||||
{
|
||||
let mut seq = serializer.serialize_seq(Some(self.sections.len()))?;
|
||||
|
||||
for section in self.sections {
|
||||
seq.serialize_element(§ion)?;
|
||||
}
|
||||
seq.end()
|
||||
}
|
||||
}
|
||||
// impl Serialize for ChunkData {
|
||||
// fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
|
||||
// where
|
||||
// S: serde::Serializer,
|
||||
// {
|
||||
// let mut seq = serializer.serialize_seq(Some(self.sections.len()))?;
|
||||
//
|
||||
// for section in self.sections {
|
||||
// seq.serialize_element(§ion)?;
|
||||
// }
|
||||
// seq.end()
|
||||
// }
|
||||
// }
|
||||
|
||||
impl ChunkData {
|
||||
pub fn new(pos: &ChunkPos) -> Self {
|
||||
@ -74,7 +79,7 @@ impl ChunkData {
|
||||
}
|
||||
|
||||
// https://wiki.vg/Chunk_Format
|
||||
#[derive(Clone, Copy, Serialize)]
|
||||
#[derive(Clone, Copy, Serialize, Deserialize, Debug)]
|
||||
pub struct ChunkSection {
|
||||
/// The number of non-empty blocks in the section. If completely full, the
|
||||
/// section contains a 16 x 16 x 16 cube of blocks = 4096 blocks
|
||||
@ -87,15 +92,15 @@ pub struct ChunkSection {
|
||||
block_states: [BlockID; 16 * 16 * 16],
|
||||
}
|
||||
|
||||
impl Debug for ChunkSection {
|
||||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
write!(f, "ChunkSection {{ blocks: {}, states: ", self.block_count)?;
|
||||
if self.block_count > 0 {
|
||||
write!(f, "{:?}", self.block_states)?;
|
||||
}
|
||||
write!(f, " }}")
|
||||
}
|
||||
}
|
||||
// impl Debug for ChunkSection {
|
||||
// fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
// write!(f, "ChunkSection {{ blocks: {}, states: ", self.block_count)?;
|
||||
// if self.block_count > 0 {
|
||||
// write!(f, "{:?}", self.block_states)?;
|
||||
// }
|
||||
// write!(f, " }}")
|
||||
// }
|
||||
// }
|
||||
|
||||
impl ChunkSection {
|
||||
pub fn new() -> Self {
|
||||
@ -201,7 +206,7 @@ impl BlockRange {
|
||||
|
||||
/// BlockID represents the type of block stored
|
||||
#[repr(u8)]
|
||||
#[derive(Debug, Clone, Copy, PartialEq, Serialize)]
|
||||
#[derive(Debug, Clone, Copy, PartialEq, Serialize, Deserialize)]
|
||||
pub enum BlockID {
|
||||
Empty,
|
||||
Generic,
|
||||
|
||||
@ -9,7 +9,7 @@ pub trait StorageServer {
|
||||
|
||||
/// `read_block_at` returns the id of the block at the location specified
|
||||
/// If no block is present, the returned id will be of the empty type
|
||||
fn read_block_at(&self, pos: &BlockPos) -> BlockID;
|
||||
fn read_block_at(&mut self, pos: &BlockPos) -> BlockID;
|
||||
}
|
||||
|
||||
#[tokio::main]
|
||||
|
||||
Loading…
Reference in New Issue
Block a user