Remove cache from hot path
parent
53c0cb664a
commit
efd6b5c60c
GPG Key ID:
19182661E818369F
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@ -234,6 +234,12 @@ dependencies = [
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"memchr",
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]
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[[package]]
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name = "arrayvec"
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version = "0.5.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "23b62fc65de8e4e7f52534fb52b0f3ed04746ae267519eef2a83941e8085068b"
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[[package]]
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name = "async-trait"
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version = "0.1.50"
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@ -245,6 +251,15 @@ dependencies = [
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"syn",
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]
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[[package]]
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name = "atoi"
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version = "0.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "616896e05fc0e2649463a93a15183c6a16bf03413a7af88ef1285ddedfa9cda5"
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dependencies = [
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"num-traits",
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]
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[[package]]
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name = "atty"
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version = "0.2.14"
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@ -289,6 +304,18 @@ version = "1.2.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
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[[package]]
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name = "bitvec"
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version = "0.19.5"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8942c8d352ae1838c9dda0b0ca2ab657696ef2232a20147cf1b30ae1a9cb4321"
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dependencies = [
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"funty",
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"radium",
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"tap",
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"wyz",
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]
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[[package]]
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name = "block-buffer"
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version = "0.9.0"
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@ -318,12 +345,24 @@ dependencies = [
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"libc",
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]
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[[package]]
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name = "build_const"
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version = "0.2.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b4ae4235e6dac0694637c763029ecea1a2ec9e4e06ec2729bd21ba4d9c863eb7"
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[[package]]
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name = "bumpalo"
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version = "3.6.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "63396b8a4b9de3f4fdfb320ab6080762242f66a8ef174c49d8e19b674db4cdbe"
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[[package]]
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name = "byteorder"
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version = "1.4.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
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[[package]]
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name = "bytes"
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version = "1.0.1"
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@ -438,6 +477,15 @@ version = "0.1.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8aebca1129a03dc6dc2b127edd729435bbc4a37e1d5f4d7513165089ceb02634"
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[[package]]
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name = "crc"
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version = "1.8.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d663548de7f5cca343f1e0a48d14dcfb0e9eb4e079ec58883b7251539fa10aeb"
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dependencies = [
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"build_const",
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]
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[[package]]
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name = "crc32fast"
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version = "1.2.1"
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@ -447,6 +495,37 @@ dependencies = [
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"cfg-if",
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]
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[[package]]
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name = "crossbeam-channel"
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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 = "06ed27e177f16d65f0f0c22a213e17c696ace5dd64b14258b52f9417ccb52db4"
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dependencies = [
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"cfg-if",
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"crossbeam-utils",
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]
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[[package]]
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name = "crossbeam-queue"
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version = "0.3.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "0f6cb3c7f5b8e51bc3ebb73a2327ad4abdbd119dc13223f14f961d2f38486756"
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dependencies = [
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"cfg-if",
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"crossbeam-utils",
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]
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[[package]]
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name = "crossbeam-utils"
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version = "0.8.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e7e9d99fa91428effe99c5c6d4634cdeba32b8cf784fc428a2a687f61a952c49"
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dependencies = [
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"autocfg",
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"cfg-if",
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"lazy_static",
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]
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[[package]]
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name = "ctrlc"
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version = "3.1.9"
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@ -533,6 +612,12 @@ dependencies = [
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"percent-encoding",
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]
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[[package]]
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name = "funty"
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version = "1.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "fed34cd105917e91daa4da6b3728c47b068749d6a62c59811f06ed2ac71d9da7"
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[[package]]
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name = "futures"
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version = "0.3.14"
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@ -674,6 +759,15 @@ dependencies = [
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"ahash 0.4.7",
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]
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[[package]]
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name = "hashlink"
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version = "0.6.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d99cf782f0dc4372d26846bec3de7804ceb5df083c2d4462c0b8d2330e894fa8"
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dependencies = [
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"hashbrown",
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]
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[[package]]
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name = "heck"
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version = "0.3.2"
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@ -692,6 +786,12 @@ dependencies = [
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"libc",
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]
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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 = "0.2.4"
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@ -828,6 +928,19 @@ version = "1.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
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[[package]]
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name = "lexical-core"
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version = "0.7.5"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "21f866863575d0e1d654fbeeabdc927292fdf862873dc3c96c6f753357e13374"
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dependencies = [
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"arrayvec",
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"bitflags",
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"cfg-if",
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"ryu",
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"static_assertions",
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]
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[[package]]
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name = "libc"
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version = "0.2.93"
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@ -845,6 +958,17 @@ dependencies = [
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"pkg-config",
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]
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[[package]]
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name = "libsqlite3-sys"
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version = "0.22.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "19cb1effde5f834799ac5e5ef0e40d45027cd74f271b1de786ba8abb30e2164d"
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dependencies = [
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"cc",
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"pkg-config",
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"vcpkg",
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]
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[[package]]
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name = "local-channel"
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version = "0.1.2"
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@ -914,6 +1038,7 @@ dependencies = [
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"serde_json",
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"simple_logger",
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"sodiumoxide",
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"sqlx",
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"thiserror",
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"tokio",
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"tokio-stream",
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@ -921,6 +1046,12 @@ dependencies = [
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"url",
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]
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[[package]]
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name = "maplit"
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version = "1.0.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3e2e65a1a2e43cfcb47a895c4c8b10d1f4a61097f9f254f183aee60cad9c651d"
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[[package]]
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name = "matches"
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version = "0.1.8"
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@ -983,6 +1114,19 @@ dependencies = [
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"libc",
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]
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[[package]]
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name = "nom"
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version = "6.1.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e7413f999671bd4745a7b624bd370a569fb6bc574b23c83a3c5ed2e453f3d5e2"
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dependencies = [
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"bitvec",
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"funty",
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"lexical-core",
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"memchr",
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"version_check",
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]
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[[package]]
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name = "ntapi"
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version = "0.3.6"
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@ -1174,6 +1318,12 @@ dependencies = [
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"proc-macro2",
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]
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[[package]]
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name = "radium"
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version = "0.5.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "941ba9d78d8e2f7ce474c015eea4d9c6d25b6a3327f9832ee29a4de27f91bbb8"
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[[package]]
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name = "rand"
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version = "0.8.3"
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@ -1412,6 +1562,19 @@ version = "0.6.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "2579985fda508104f7587689507983eadd6a6e84dd35d6d115361f530916fa0d"
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[[package]]
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name = "sha2"
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version = "0.9.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "fa827a14b29ab7f44778d14a88d3cb76e949c45083f7dbfa507d0cb699dc12de"
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dependencies = [
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"block-buffer",
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"cfg-if",
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"cpuid-bool",
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"digest",
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"opaque-debug",
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]
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[[package]]
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name = "signal-hook-registry"
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version = "1.3.0"
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@ -1473,6 +1636,105 @@ version = "0.5.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
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[[package]]
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name = "sqlformat"
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version = "0.1.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "6d86e3c77ff882a828346ba401a7ef4b8e440df804491c6064fe8295765de71c"
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dependencies = [
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"lazy_static",
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"maplit",
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"nom",
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"regex",
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"unicode_categories",
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]
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[[package]]
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name = "sqlx"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"sqlx-core",
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"sqlx-macros",
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]
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[[package]]
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name = "sqlx-core"
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version = "0.5.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"ahash 0.7.2",
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"atoi",
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"bitflags",
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"byteorder",
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"bytes",
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"chrono",
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"crc",
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"crossbeam-channel",
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"crossbeam-queue",
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"crossbeam-utils",
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"either",
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"futures-channel",
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"futures-core",
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"futures-util",
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"hashlink",
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"hex",
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"itoa",
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"libc",
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"libsqlite3-sys",
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"log",
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"memchr",
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"once_cell",
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"parking_lot",
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"percent-encoding",
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"rustls",
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"sha2",
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"smallvec",
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"sqlformat",
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"sqlx-rt",
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"stringprep",
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"thiserror",
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"time 0.2.26",
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"tokio-stream",
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"url",
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"webpki",
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"webpki-roots",
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"whoami",
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]
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[[package]]
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name = "sqlx-macros"
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version = "0.5.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"dotenv",
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"either",
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"futures",
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"heck",
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"proc-macro2",
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"quote",
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"sha2",
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"sqlx-core",
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"sqlx-rt",
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"syn",
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"url",
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]
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[[package]]
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name = "sqlx-rt"
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version = "0.5.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"actix-rt",
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"once_cell",
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"tokio",
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"tokio-rustls",
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]
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[[package]]
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name = "standback"
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version = "0.2.17"
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@ -1482,6 +1744,12 @@ dependencies = [
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"version_check",
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]
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[[package]]
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name = "static_assertions"
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version = "1.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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name = "stdweb"
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version = "0.4.20"
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@ -1531,6 +1799,16 @@ version = "0.1.5"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "213701ba3370744dcd1a12960caa4843b3d68b4d1c0a5d575e0d65b2ee9d16c0"
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[[package]]
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name = "stringprep"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"unicode-bidi",
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"unicode-normalization",
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]
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[[package]]
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name = "strsim"
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version = "0.10.0"
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@ -1548,6 +1826,12 @@ dependencies = [
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"unicode-xid",
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]
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[[package]]
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name = "tap"
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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 = "55937e1799185b12863d447f42597ed69d9928686b8d88a1df17376a097d8369"
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[[package]]
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@ -1802,6 +2086,12 @@ version = "0.2.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "f7fe0bb3479651439c9112f72b6c505038574c9fbb575ed1bf3b797fa39dd564"
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[[package]]
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name = "unicode_categories"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "39ec24b3121d976906ece63c9daad25b85969647682eee313cb5779fdd69e14e"
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[[package]]
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name = "untrusted"
|
||||
version = "0.7.1"
|
||||
|
|
@ -1821,6 +2111,12 @@ dependencies = [
|
|||
"serde",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "vcpkg"
|
||||
version = "0.2.12"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "cbdbff6266a24120518560b5dc983096efb98462e51d0d68169895b237be3e5d"
|
||||
|
||||
[[package]]
|
||||
name = "vec_map"
|
||||
version = "0.8.2"
|
||||
|
|
@ -1946,6 +2242,16 @@ dependencies = [
|
|||
"webpki",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "whoami"
|
||||
version = "1.1.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "4abacf325c958dfeaf1046931d37f2a901b6dfe0968ee965a29e94c6766b2af6"
|
||||
dependencies = [
|
||||
"wasm-bindgen",
|
||||
"web-sys",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "winapi"
|
||||
version = "0.3.9"
|
||||
|
|
@ -1985,3 +2291,9 @@ checksum = "0120db82e8a1e0b9fb3345a539c478767c0048d842860994d96113d5b667bd69"
|
|||
dependencies = [
|
||||
"winapi",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "wyz"
|
||||
version = "0.2.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "85e60b0d1b5f99db2556934e21937020776a5d31520bf169e851ac44e6420214"
|
||||
|
|
|
|||
|
|
@ -29,6 +29,7 @@ serde = "1"
|
|||
serde_json = "1"
|
||||
simple_logger = "1"
|
||||
sodiumoxide = "0.2"
|
||||
sqlx = { version = "0.5", features = [ "runtime-actix-rustls", "sqlite", "time", "chrono", "macros" ] }
|
||||
thiserror = "1"
|
||||
tokio = { version = "1", features = [ "full", "parking_lot" ] }
|
||||
tokio-stream = { version = "0.1", features = [ "sync" ] }
|
||||
|
|
@ -38,3 +39,4 @@ url = { version = "2", features = [ "serde" ] }
|
|||
[profile.release]
|
||||
lto = true
|
||||
codegen-units = 1
|
||||
debug = true
|
||||
|
|
@ -0,0 +1,7 @@
|
|||
create table if not exists Images(
|
||||
id varchar primary key not null,
|
||||
size integer not null,
|
||||
accessed timestamp not null default CURRENT_TIMESTAMP,
|
||||
disk_size integer as ((size + 4095) / 4096 * 4096)
|
||||
);
|
||||
create index if not exists Images_accessed on Images(accessed);
|
||||
|
|
@ -0,0 +1,9 @@
|
|||
#!/usr/bin/env bash
|
||||
|
||||
# This script needs to be run once in order for compile time macros to not
|
||||
# complain about a missing DB
|
||||
|
||||
# We can trust that our program will initialize the db at runtime the same way
|
||||
# as it pulls from the same file for initialization
|
||||
|
||||
sqlite3 cache/metadata.sqlite < db_queries/init.sql
|
||||
|
|
@ -3,11 +3,13 @@ use bytes::{Buf, Bytes};
|
|||
use futures::{Stream, StreamExt};
|
||||
use log::{debug, error};
|
||||
use once_cell::sync::Lazy;
|
||||
use serde::Deserialize;
|
||||
use std::collections::HashMap;
|
||||
use std::fmt::Display;
|
||||
use std::num::NonZeroU64;
|
||||
use std::path::{Path, PathBuf};
|
||||
use std::pin::Pin;
|
||||
use std::task::{Context, Poll};
|
||||
use std::{collections::HashMap, num::NonZeroU64};
|
||||
use tokio::fs::{create_dir_all, remove_file, File};
|
||||
use tokio::io::{AsyncRead, AsyncWriteExt, ReadBuf};
|
||||
use tokio::sync::mpsc::UnboundedSender;
|
||||
|
|
@ -16,7 +18,7 @@ use tokio::sync::RwLock;
|
|||
use tokio_stream::wrappers::WatchStream;
|
||||
use tokio_util::codec::{BytesCodec, FramedRead};
|
||||
|
||||
use super::{BoxedImageStream, CacheStream, CacheStreamItem};
|
||||
use super::{BoxedImageStream, CacheStream, CacheStreamItem, ImageMetadata};
|
||||
|
||||
/// Keeps track of files that are currently being written to.
|
||||
///
|
||||
|
|
@ -38,26 +40,27 @@ static WRITING_STATUS: Lazy<RwLock<HashMap<PathBuf, Receiver<WritingStatus>>>> =
|
|||
Lazy::new(|| RwLock::new(HashMap::new()));
|
||||
|
||||
/// Tries to read from the file, returning a byte stream if it exists
|
||||
pub async fn read_file(path: &Path) -> Option<Result<CacheStream, std::io::Error>> {
|
||||
if path.exists() {
|
||||
let status = WRITING_STATUS.read().await.get(path).map(Clone::clone);
|
||||
pub async fn read_file(
|
||||
path: &Path,
|
||||
) -> Option<Result<(CacheStream, ImageMetadata), std::io::Error>> {
|
||||
let file = File::open(path).await.ok()?;
|
||||
let std_file = file.try_clone().await.unwrap().into_std().await;
|
||||
|
||||
if let Some(status) = status {
|
||||
Some(
|
||||
ConcurrentFsStream::new(path, WatchStream::new(status))
|
||||
.await
|
||||
.map(CacheStream::Concurrent),
|
||||
)
|
||||
} else {
|
||||
Some(
|
||||
File::open(path)
|
||||
.await
|
||||
.map(|f| CacheStream::Completed(FramedRead::new(f, BytesCodec::new()))),
|
||||
)
|
||||
}
|
||||
let metadata = {
|
||||
let mut de = serde_json::Deserializer::from_reader(std_file);
|
||||
ImageMetadata::deserialize(&mut de).ok()?
|
||||
};
|
||||
|
||||
let stream = if let Some(status) = WRITING_STATUS.read().await.get(path).map(Clone::clone) {
|
||||
CacheStream::Concurrent(ConcurrentFsStream::from_file(
|
||||
file,
|
||||
WatchStream::new(status),
|
||||
))
|
||||
} else {
|
||||
None
|
||||
}
|
||||
CacheStream::Completed(FramedRead::new(file, BytesCodec::new()))
|
||||
};
|
||||
|
||||
Some(Ok((stream, metadata)))
|
||||
}
|
||||
|
||||
/// Maps the input byte stream into one that writes to disk instead, returning
|
||||
|
|
@ -65,6 +68,7 @@ pub async fn read_file(path: &Path) -> Option<Result<CacheStream, std::io::Error
|
|||
pub async fn write_file(
|
||||
path: &Path,
|
||||
mut byte_stream: BoxedImageStream,
|
||||
metadata: ImageMetadata,
|
||||
notifier: UnboundedSender<u64>,
|
||||
) -> Result<CacheStream, std::io::Error> {
|
||||
let (tx, rx) = channel(WritingStatus::NotDone);
|
||||
|
|
@ -73,7 +77,7 @@ pub async fn write_file(
|
|||
let mut write_lock = WRITING_STATUS.write().await;
|
||||
let parent = path.parent().unwrap();
|
||||
create_dir_all(parent).await?;
|
||||
let file = File::create(path).await?; // we need to make sure the file exists and is truncated.
|
||||
let file = File::create(path).await?; // we need to make sure the file exists and is truncated.
|
||||
write_lock.insert(path.to_path_buf(), rx.clone());
|
||||
file
|
||||
};
|
||||
|
|
@ -84,6 +88,8 @@ pub async fn write_file(
|
|||
let path_buf = path_buf; // moves path buf into async
|
||||
let mut errored = false;
|
||||
let mut bytes_written: u64 = 0;
|
||||
file.write_all(serde_json::to_string(&metadata).unwrap().as_bytes())
|
||||
.await?;
|
||||
while let Some(bytes) = byte_stream.next().await {
|
||||
if let Ok(mut bytes) = bytes {
|
||||
loop {
|
||||
|
|
@ -113,17 +119,19 @@ pub async fn write_file(
|
|||
debug!("writing to file done");
|
||||
}
|
||||
|
||||
let mut write_lock = WRITING_STATUS.write().await;
|
||||
// This needs to be written atomically with the write lock, else
|
||||
// it's possible we have an inconsistent state
|
||||
//
|
||||
// We don't really care if we have no receivers
|
||||
if errored {
|
||||
let _ = tx.send(WritingStatus::Error);
|
||||
} else {
|
||||
let _ = tx.send(WritingStatus::Done(bytes_written));
|
||||
{
|
||||
let mut write_lock = WRITING_STATUS.write().await;
|
||||
// This needs to be written atomically with the write lock, else
|
||||
// it's possible we have an inconsistent state
|
||||
//
|
||||
// We don't really care if we have no receivers
|
||||
if errored {
|
||||
let _ = tx.send(WritingStatus::Error);
|
||||
} else {
|
||||
let _ = tx.send(WritingStatus::Done(bytes_written));
|
||||
}
|
||||
write_lock.remove(&path_buf);
|
||||
}
|
||||
write_lock.remove(&path_buf);
|
||||
|
||||
// notify
|
||||
if let Err(e) = notifier.send(bytes_written) {
|
||||
|
|
@ -154,12 +162,18 @@ impl ConcurrentFsStream {
|
|||
path: &Path,
|
||||
receiver: WatchStream<WritingStatus>,
|
||||
) -> Result<Self, std::io::Error> {
|
||||
Ok(Self {
|
||||
file: Box::pin(File::open(path).await?),
|
||||
File::open(path)
|
||||
.await
|
||||
.map(|file| Self::from_file(file, receiver))
|
||||
}
|
||||
|
||||
fn from_file(file: File, receiver: WatchStream<WritingStatus>) -> Self {
|
||||
Self {
|
||||
file: Box::pin(file),
|
||||
receiver: Box::pin(receiver),
|
||||
bytes_read: 0,
|
||||
bytes_total: None,
|
||||
})
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -182,7 +196,7 @@ impl Stream for ConcurrentFsStream {
|
|||
// First, try to read from the file...
|
||||
|
||||
// TODO: Might be more efficient to have a larger buffer
|
||||
let mut bytes = [0; 8 * 1024].to_vec();
|
||||
let mut bytes = [0; 4 * 1024].to_vec();
|
||||
let mut buffer = ReadBuf::new(&mut bytes);
|
||||
match self.file.as_mut().poll_read(cx, &mut buffer) {
|
||||
Poll::Ready(Ok(_)) => (),
|
||||
|
|
|
|||
|
|
@ -136,15 +136,16 @@ impl GenerationalCache {
|
|||
#[async_trait]
|
||||
impl Cache for GenerationalCache {
|
||||
async fn get(
|
||||
&mut self,
|
||||
&self,
|
||||
key: &CacheKey,
|
||||
) -> Option<Result<(CacheStream, &ImageMetadata), CacheError>> {
|
||||
) -> Option<Result<(CacheStream, ImageMetadata), CacheError>> {
|
||||
todo!();
|
||||
if self.in_memory.contains(key) {
|
||||
return self
|
||||
.in_memory
|
||||
.get(key)
|
||||
// TODO: get rid of clone?
|
||||
.map(|(image, metadata)| Ok((CacheStream::from(image.clone()), metadata)));
|
||||
.map(|(image, metadata)| Ok((CacheStream::from(image.clone()), metadata.clone())));
|
||||
}
|
||||
|
||||
if let Some(metadata) = self.on_disk.pop(key) {
|
||||
|
|
@ -182,21 +183,23 @@ impl Cache for GenerationalCache {
|
|||
|
||||
buffer.shrink_to_fit();
|
||||
|
||||
todo!();
|
||||
self.disk_cur_size -= buffer.len() as u64;
|
||||
let image = CacheStream::from(CachedImage(Bytes::from(buffer))).map_err(|e| e.into());
|
||||
// let image = CacheStream::from(CachedImage(Bytes::from(buffer))).map_err(|e| e.into());
|
||||
|
||||
return Some(self.put(key.clone(), Box::new(image), metadata).await);
|
||||
// return Some(self.put(key.clone(), Box::new(image), metadata).await);
|
||||
}
|
||||
|
||||
None
|
||||
}
|
||||
|
||||
async fn put(
|
||||
&mut self,
|
||||
&self,
|
||||
key: CacheKey,
|
||||
mut image: BoxedImageStream,
|
||||
metadata: ImageMetadata,
|
||||
) -> Result<(CacheStream, &ImageMetadata), CacheError> {
|
||||
) -> Result<CacheStream, CacheError> {
|
||||
todo!();
|
||||
let mut hot_evicted = vec![];
|
||||
|
||||
let image = {
|
||||
|
|
@ -237,9 +240,10 @@ impl Cache for GenerationalCache {
|
|||
self.push_into_cold(key, image, metadata).await;
|
||||
}
|
||||
|
||||
self.get(&key).await.unwrap()
|
||||
todo!();
|
||||
// self.get(&key).await.unwrap()
|
||||
}
|
||||
|
||||
// noop
|
||||
async fn increase_usage(&mut self, _amt: u64) {}
|
||||
async fn increase_usage(&self, _amt: u64) {}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,88 +1,128 @@
|
|||
//! Low memory caching stuff
|
||||
|
||||
use std::{path::PathBuf, sync::Arc};
|
||||
use std::sync::{atomic::Ordering, Arc};
|
||||
use std::{path::PathBuf, sync::atomic::AtomicU64};
|
||||
|
||||
use async_trait::async_trait;
|
||||
use lru::LruCache;
|
||||
use tokio::sync::mpsc::{unbounded_channel, UnboundedSender};
|
||||
use tokio::sync::RwLock;
|
||||
use futures::StreamExt;
|
||||
use sqlx::SqlitePool;
|
||||
use tokio::sync::mpsc::{channel, unbounded_channel, Sender, UnboundedSender};
|
||||
use tokio_stream::wrappers::ReceiverStream;
|
||||
|
||||
use super::{BoxedImageStream, Cache, CacheError, CacheKey, CacheStream, ImageMetadata};
|
||||
|
||||
pub struct LowMemCache {
|
||||
on_disk: LruCache<CacheKey, ImageMetadata>,
|
||||
disk_path: PathBuf,
|
||||
disk_max_size: u64,
|
||||
disk_cur_size: u64,
|
||||
master_sender: UnboundedSender<u64>,
|
||||
disk_cur_size: AtomicU64,
|
||||
file_size_channel_sender: UnboundedSender<u64>,
|
||||
db_update_channel_sender: Sender<DbMessage>,
|
||||
}
|
||||
|
||||
enum DbMessage {
|
||||
Get(CacheKey),
|
||||
Put(CacheKey, ImageMetadata),
|
||||
}
|
||||
|
||||
impl LowMemCache {
|
||||
/// Constructs a new low memory cache at the provided path and capacity.
|
||||
/// Constructs a new low memory cache at the provided path and capaci ty.
|
||||
/// This internally spawns a task that will wait for filesystem
|
||||
/// notifications when a file has been written.
|
||||
#[allow(clippy::new_ret_no_self)]
|
||||
pub fn new(disk_max_size: u64, disk_path: PathBuf) -> Arc<RwLock<Box<dyn Cache>>> {
|
||||
let (tx, mut rx) = unbounded_channel();
|
||||
let new_self: Arc<RwLock<Box<dyn Cache>>> = Arc::new(RwLock::new(Box::new(Self {
|
||||
on_disk: LruCache::unbounded(),
|
||||
pub async fn new(disk_max_size: u64, disk_path: PathBuf) -> Arc<Box<dyn Cache>> {
|
||||
let (file_size_tx, mut file_size_rx) = unbounded_channel();
|
||||
let (db_tx, db_rx) = channel(128);
|
||||
let db_pool = {
|
||||
let db_url = format!(
|
||||
"sqlite:{}/metadata.sqlite?mode=rwc",
|
||||
disk_path.to_str().unwrap()
|
||||
);
|
||||
let db = SqlitePool::connect(&db_url).await.unwrap();
|
||||
|
||||
// Run db init
|
||||
sqlx::query_file!("./db_queries/init.sql")
|
||||
.execute(&mut db.acquire().await.unwrap())
|
||||
.await
|
||||
.unwrap();
|
||||
|
||||
db
|
||||
};
|
||||
|
||||
let new_self: Arc<Box<dyn Cache>> = Arc::new(Box::new(Self {
|
||||
disk_path,
|
||||
disk_max_size,
|
||||
disk_cur_size: 0,
|
||||
master_sender: tx,
|
||||
})));
|
||||
disk_cur_size: AtomicU64::new(0),
|
||||
file_size_channel_sender: file_size_tx,
|
||||
db_update_channel_sender: db_tx,
|
||||
}));
|
||||
|
||||
// Spawns a new task that continuously listens for events received by
|
||||
// the channel, which informs the low memory cache the total size of the
|
||||
// item that was put into the cache.
|
||||
let new_self_0 = Arc::clone(&new_self);
|
||||
tokio::spawn(async move {
|
||||
while let Some(new_size) = rx.recv().await {
|
||||
new_self_0.write().await.increase_usage(new_size).await;
|
||||
// This will never return None, effectively a loop
|
||||
while let Some(new_size) = file_size_rx.recv().await {
|
||||
new_self_0.increase_usage(new_size).await;
|
||||
}
|
||||
});
|
||||
|
||||
// Spawn a new task that will listen for updates to the db.
|
||||
tokio::spawn(async move {
|
||||
let db_pool = db_pool;
|
||||
let mut recv_stream = ReceiverStream::new(db_rx).ready_chunks(128);
|
||||
while let Some(messages) = recv_stream.next().await {
|
||||
let mut transaction = db_pool.begin().await.unwrap();
|
||||
for message in messages {}
|
||||
|
||||
transaction.commit().await.unwrap();
|
||||
}
|
||||
});
|
||||
|
||||
new_self
|
||||
}
|
||||
|
||||
async fn prune(&mut self) {
|
||||
todo!()
|
||||
}
|
||||
}
|
||||
|
||||
#[async_trait]
|
||||
impl Cache for LowMemCache {
|
||||
async fn get(
|
||||
&mut self,
|
||||
&self,
|
||||
key: &CacheKey,
|
||||
) -> Option<Result<(CacheStream, &ImageMetadata), CacheError>> {
|
||||
let metadata = self.on_disk.get(key)?;
|
||||
) -> Option<Result<(CacheStream, ImageMetadata), CacheError>> {
|
||||
let channel = self.db_update_channel_sender.clone();
|
||||
let key_0 = key.clone();
|
||||
|
||||
tokio::spawn(async move { channel.send(DbMessage::Get(key_0)).await });
|
||||
|
||||
let path = self.disk_path.clone().join(PathBuf::from(key.clone()));
|
||||
super::fs::read_file(&path)
|
||||
.await
|
||||
.map(|res| res.map(|stream| (stream, metadata)).map_err(Into::into))
|
||||
.map(|res| res.map_err(Into::into))
|
||||
}
|
||||
|
||||
async fn put(
|
||||
&mut self,
|
||||
&self,
|
||||
key: CacheKey,
|
||||
image: BoxedImageStream,
|
||||
metadata: ImageMetadata,
|
||||
) -> Result<(CacheStream, &ImageMetadata), CacheError> {
|
||||
let path = self.disk_path.clone().join(PathBuf::from(key.clone()));
|
||||
self.on_disk.put(key.clone(), metadata);
|
||||
super::fs::write_file(&path, image, self.master_sender.clone())
|
||||
.await
|
||||
.map(move |stream| (stream, self.on_disk.get(&key).unwrap()))
|
||||
.map_err(Into::into)
|
||||
) -> Result<CacheStream, CacheError> {
|
||||
let channel = self.db_update_channel_sender.clone();
|
||||
let key_0 = key.clone();
|
||||
tokio::spawn(async move { channel.send(DbMessage::Put(key_0, metadata)).await });
|
||||
|
||||
let path = self.disk_path.clone().join(PathBuf::from(key));
|
||||
|
||||
super::fs::write_file(
|
||||
&path,
|
||||
image,
|
||||
metadata,
|
||||
self.file_size_channel_sender.clone(),
|
||||
)
|
||||
.await
|
||||
.map_err(Into::into)
|
||||
}
|
||||
|
||||
/// Increments the internal size counter, pruning if the value exceeds the
|
||||
/// user-defined capacity.
|
||||
async fn increase_usage(&mut self, amt: u64) {
|
||||
self.disk_cur_size += amt;
|
||||
if self.disk_cur_size > self.disk_max_size {
|
||||
self.prune().await;
|
||||
}
|
||||
async fn increase_usage(&self, amt: u64) {
|
||||
self.disk_cur_size.fetch_add(amt, Ordering::Release);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -10,13 +10,14 @@ use bytes::{Bytes, BytesMut};
|
|||
use chrono::{DateTime, FixedOffset};
|
||||
use fs::ConcurrentFsStream;
|
||||
use futures::{Stream, StreamExt};
|
||||
use serde::{Deserialize, Serialize};
|
||||
use thiserror::Error;
|
||||
use tokio::fs::File;
|
||||
use tokio_util::codec::{BytesCodec, FramedRead};
|
||||
|
||||
pub use fs::UpstreamError;
|
||||
pub use generational::GenerationalCache;
|
||||
pub use low_mem::LowMemCache;
|
||||
use tokio::fs::File;
|
||||
use tokio_util::codec::{BytesCodec, FramedRead};
|
||||
|
||||
mod fs;
|
||||
mod generational;
|
||||
|
|
@ -45,16 +46,15 @@ impl From<CacheKey> for PathBuf {
|
|||
#[derive(Clone)]
|
||||
pub struct CachedImage(pub Bytes);
|
||||
|
||||
#[derive(Copy, Clone)]
|
||||
#[derive(Copy, Clone, Serialize, Deserialize)]
|
||||
pub struct ImageMetadata {
|
||||
pub content_type: Option<ImageContentType>,
|
||||
// If we can guarantee a non-zero u32 here we can save 4 bytes
|
||||
pub content_length: Option<u32>,
|
||||
pub last_modified: Option<DateTime<FixedOffset>>,
|
||||
}
|
||||
|
||||
// Confirmed by Ply to be these types: https://link.eddie.sh/ZXfk0
|
||||
#[derive(Copy, Clone)]
|
||||
#[derive(Copy, Clone, Serialize, Deserialize)]
|
||||
pub enum ImageContentType {
|
||||
Png,
|
||||
Jpeg,
|
||||
|
|
@ -147,19 +147,17 @@ pub enum CacheError {
|
|||
|
||||
#[async_trait]
|
||||
pub trait Cache: Send + Sync {
|
||||
async fn get(
|
||||
&mut self,
|
||||
key: &CacheKey,
|
||||
) -> Option<Result<(CacheStream, &ImageMetadata), CacheError>>;
|
||||
async fn get(&self, key: &CacheKey)
|
||||
-> Option<Result<(CacheStream, ImageMetadata), CacheError>>;
|
||||
|
||||
async fn put(
|
||||
&mut self,
|
||||
&self,
|
||||
key: CacheKey,
|
||||
image: BoxedImageStream,
|
||||
metadata: ImageMetadata,
|
||||
) -> Result<(CacheStream, &ImageMetadata), CacheError>;
|
||||
) -> Result<CacheStream, CacheError>;
|
||||
|
||||
async fn increase_usage(&mut self, amt: u64);
|
||||
async fn increase_usage(&self, amt: u64);
|
||||
}
|
||||
|
||||
pub enum CacheStream {
|
||||
|
|
|
|||
|
|
@ -124,14 +124,14 @@ async fn main() -> Result<(), std::io::Error> {
|
|||
}
|
||||
});
|
||||
|
||||
let cache: Arc<TokioRwLock<Box<dyn Cache>>> = if low_mem_mode {
|
||||
LowMemCache::new(disk_quota, cache_path.clone())
|
||||
let cache: Arc<Box<dyn Cache>> = if low_mem_mode {
|
||||
LowMemCache::new(disk_quota, cache_path.clone()).await
|
||||
} else {
|
||||
Arc::new(TokioRwLock::new(Box::new(GenerationalCache::new(
|
||||
Arc::new(Box::new(GenerationalCache::new(
|
||||
memory_max_size,
|
||||
disk_quota,
|
||||
cache_path.clone(),
|
||||
))))
|
||||
)))
|
||||
};
|
||||
let cache = Arc::clone(&cache);
|
||||
let cache1 = Arc::clone(&cache);
|
||||
|
|
|
|||
|
|
@ -52,7 +52,7 @@ impl Responder for ServerResponse {
|
|||
#[get("/{token}/data/{chapter_hash}/{file_name}")]
|
||||
async fn token_data(
|
||||
state: Data<RwLockServerState>,
|
||||
cache: Data<RwLock<Box<dyn Cache>>>,
|
||||
cache: Data<Box<dyn Cache>>,
|
||||
path: Path<(String, String, String)>,
|
||||
) -> impl Responder {
|
||||
let (token, chapter_hash, file_name) = path.into_inner();
|
||||
|
|
@ -69,7 +69,7 @@ async fn token_data(
|
|||
#[get("/{token}/data-saver/{chapter_hash}/{file_name}")]
|
||||
async fn token_data_saver(
|
||||
state: Data<RwLockServerState>,
|
||||
cache: Data<RwLock<Box<dyn Cache>>>,
|
||||
cache: Data<Box<dyn Cache>>,
|
||||
path: Path<(String, String, String)>,
|
||||
) -> impl Responder {
|
||||
let (token, chapter_hash, file_name) = path.into_inner();
|
||||
|
|
@ -187,16 +187,16 @@ fn push_headers(builder: &mut HttpResponseBuilder) -> &mut HttpResponseBuilder {
|
|||
#[allow(clippy::future_not_send)]
|
||||
async fn fetch_image(
|
||||
state: Data<RwLockServerState>,
|
||||
cache: Data<RwLock<Box<dyn Cache>>>,
|
||||
cache: Data<Box<dyn Cache>>,
|
||||
chapter_hash: String,
|
||||
file_name: String,
|
||||
is_data_saver: bool,
|
||||
) -> ServerResponse {
|
||||
let key = CacheKey(chapter_hash, file_name, is_data_saver);
|
||||
|
||||
match cache.write().await.get(&key).await {
|
||||
match cache.get(&key).await {
|
||||
Some(Ok((image, metadata))) => {
|
||||
return construct_response(image, metadata);
|
||||
return construct_response(image, &metadata);
|
||||
}
|
||||
Some(Err(_)) => {
|
||||
return ServerResponse::HttpResponse(HttpResponse::BadGateway().finish());
|
||||
|
|
@ -263,9 +263,9 @@ async fn fetch_image(
|
|||
debug!("Inserting into cache");
|
||||
|
||||
let metadata = ImageMetadata::new(content_type, length, last_mod).unwrap();
|
||||
let (stream, metadata) = {
|
||||
match cache.write().await.put(key, Box::new(body), metadata).await {
|
||||
Ok((stream, metadata)) => (stream, *metadata),
|
||||
let stream = {
|
||||
match cache.put(key, Box::new(body), metadata).await {
|
||||
Ok(stream) => stream,
|
||||
Err(e) => {
|
||||
warn!("Failed to insert into cache: {}", e);
|
||||
return ServerResponse::HttpResponse(
|
||||
|
|
|
|||
Loading…
Reference in New Issue