Merge branch 'server-work' into 'main'
Server work See merge request x433485/minisql!9
This commit is contained in:
Jindřich Moravec
commit
b2263599cc
17 changed files with 829 additions and 206 deletions
253
Cargo.lock
generated
253
Cargo.lock
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@ -17,6 +17,54 @@ version = "1.0.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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"anstyle",
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"anstyle-parse",
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"anstyle-query",
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"anstyle-wincon",
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"colorchoice",
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"utf8parse",
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]
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[[package]]
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dependencies = [
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"utf8parse",
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]
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[[package]]
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name = "anstyle-query"
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"windows-sys 0.52.0",
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]
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[[package]]
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name = "anstyle-wincon"
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dependencies = [
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"anstyle",
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"windows-sys 0.52.0",
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]
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name = "anyhow"
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version = "1.0.76"
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@ -107,6 +155,46 @@ version = "1.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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source = "registry+https://github.com/rust-lang/crates.io-index"
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"clap_builder",
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"clap_derive",
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]
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name = "clap_builder"
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version = "4.4.18"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"anstream",
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"anstyle",
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]
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name = "clap_derive"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"heck",
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"proc-macro2 1.0.70",
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"quote 1.0.33",
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"syn 2.0.41",
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]
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[[package]]
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name = "clap_lex"
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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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name = "client"
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version = "0.1.0"
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version = "0.1.0"
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"tokio",
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"tokio",
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]
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]
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name = "colorchoice"
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version = "1.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "acbf1af155f9b9ef647e42cdc158db4b64a1b61f743629225fde6f3e0be2a7c7"
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[[package]]
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name = "getrandom"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"cfg-if",
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"libc",
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"wasi",
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]
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name = "gimli"
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version = "0.28.1"
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name = "hermit-abi"
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version = "0.3.3"
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version = "0.1.0"
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version = "0.1.0"
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dependencies = [
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dependencies = [
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"bimap",
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"bimap",
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"thiserror",
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]
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]
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@ -182,7 +294,7 @@ checksum = "8f3d0b296e374a4e6f3c7b0a1f5a51d748a0d34c85e7dc48fc3fa9a87657fe09"
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"libc",
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"libc",
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"wasi",
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"wasi",
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"windows-sys",
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"windows-sys 0.48.0",
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]
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]
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"libc",
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"libc",
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"redox_syscall",
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"redox_syscall",
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"smallvec",
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"smallvec",
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"windows-targets",
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"windows-targets 0.48.5",
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]
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]
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source = "registry+https://github.com/rust-lang/crates.io-index"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8afb450f006bf6385ca15ef45d71d2288452bc3683ce2e2cacc0d18e4be60b58"
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name = "ppv-lite86"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
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name = "proc-macro2"
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version = "0.4.30"
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]
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name = "rand"
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version = "0.8.5"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"libc",
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name = "rand_chacha"
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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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dependencies = [
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name = "rand_core"
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version = "0.6.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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version = "0.4.1"
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version = "0.1.0"
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dependencies = [
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checksum = "7b5fac59a5cb5dd637972e5fca70daf0523c9067fcdc4842f053dae04a18f8e9"
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]
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name = "strsim"
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version = "0.10.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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name = "syn"
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]
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source = "registry+https://github.com/rust-lang/crates.io-index"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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name = "version_check"
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version = "0.1.5"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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||||||
|
"windows_aarch64_gnullvm 0.52.0",
|
||||||
|
"windows_aarch64_msvc 0.52.0",
|
||||||
|
"windows_i686_gnu 0.52.0",
|
||||||
|
"windows_i686_msvc 0.52.0",
|
||||||
|
"windows_x86_64_gnu 0.52.0",
|
||||||
|
"windows_x86_64_gnullvm 0.52.0",
|
||||||
|
"windows_x86_64_msvc 0.52.0",
|
||||||
]
|
]
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
|
|
@ -531,38 +718,80 @@ version = "0.48.5"
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
checksum = "2b38e32f0abccf9987a4e3079dfb67dcd799fb61361e53e2882c3cbaf0d905d8"
|
checksum = "2b38e32f0abccf9987a4e3079dfb67dcd799fb61361e53e2882c3cbaf0d905d8"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows_aarch64_gnullvm"
|
||||||
|
version = "0.52.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "cb7764e35d4db8a7921e09562a0304bf2f93e0a51bfccee0bd0bb0b666b015ea"
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "windows_aarch64_msvc"
|
name = "windows_aarch64_msvc"
|
||||||
version = "0.48.5"
|
version = "0.48.5"
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
checksum = "dc35310971f3b2dbbf3f0690a219f40e2d9afcf64f9ab7cc1be722937c26b4bc"
|
checksum = "dc35310971f3b2dbbf3f0690a219f40e2d9afcf64f9ab7cc1be722937c26b4bc"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows_aarch64_msvc"
|
||||||
|
version = "0.52.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "bbaa0368d4f1d2aaefc55b6fcfee13f41544ddf36801e793edbbfd7d7df075ef"
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "windows_i686_gnu"
|
name = "windows_i686_gnu"
|
||||||
version = "0.48.5"
|
version = "0.48.5"
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
checksum = "a75915e7def60c94dcef72200b9a8e58e5091744960da64ec734a6c6e9b3743e"
|
checksum = "a75915e7def60c94dcef72200b9a8e58e5091744960da64ec734a6c6e9b3743e"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows_i686_gnu"
|
||||||
|
version = "0.52.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "a28637cb1fa3560a16915793afb20081aba2c92ee8af57b4d5f28e4b3e7df313"
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "windows_i686_msvc"
|
name = "windows_i686_msvc"
|
||||||
version = "0.48.5"
|
version = "0.48.5"
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
checksum = "8f55c233f70c4b27f66c523580f78f1004e8b5a8b659e05a4eb49d4166cca406"
|
checksum = "8f55c233f70c4b27f66c523580f78f1004e8b5a8b659e05a4eb49d4166cca406"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows_i686_msvc"
|
||||||
|
version = "0.52.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "ffe5e8e31046ce6230cc7215707b816e339ff4d4d67c65dffa206fd0f7aa7b9a"
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "windows_x86_64_gnu"
|
name = "windows_x86_64_gnu"
|
||||||
version = "0.48.5"
|
version = "0.48.5"
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
checksum = "53d40abd2583d23e4718fddf1ebec84dbff8381c07cae67ff7768bbf19c6718e"
|
checksum = "53d40abd2583d23e4718fddf1ebec84dbff8381c07cae67ff7768bbf19c6718e"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows_x86_64_gnu"
|
||||||
|
version = "0.52.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "3d6fa32db2bc4a2f5abeacf2b69f7992cd09dca97498da74a151a3132c26befd"
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "windows_x86_64_gnullvm"
|
name = "windows_x86_64_gnullvm"
|
||||||
version = "0.48.5"
|
version = "0.48.5"
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
checksum = "0b7b52767868a23d5bab768e390dc5f5c55825b6d30b86c844ff2dc7414044cc"
|
checksum = "0b7b52767868a23d5bab768e390dc5f5c55825b6d30b86c844ff2dc7414044cc"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows_x86_64_gnullvm"
|
||||||
|
version = "0.52.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "1a657e1e9d3f514745a572a6846d3c7aa7dbe1658c056ed9c3344c4109a6949e"
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "windows_x86_64_msvc"
|
name = "windows_x86_64_msvc"
|
||||||
version = "0.48.5"
|
version = "0.48.5"
|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
|
checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows_x86_64_msvc"
|
||||||
|
version = "0.52.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "dff9641d1cd4be8d1a070daf9e3773c5f67e78b4d9d42263020c057706765c04"
|
||||||
|
|
|
||||||
|
|
@ -7,3 +7,4 @@ edition = "2021"
|
||||||
|
|
||||||
[dependencies]
|
[dependencies]
|
||||||
bimap = "0.6.3"
|
bimap = "0.6.3"
|
||||||
|
thiserror = "1.0.50"
|
||||||
|
|
|
||||||
|
|
@ -1,17 +1,44 @@
|
||||||
|
use std::num::{ParseFloatError, ParseIntError};
|
||||||
|
use std::str::Utf8Error;
|
||||||
|
use thiserror::Error;
|
||||||
use crate::internals::row::ColumnPosition;
|
use crate::internals::row::ColumnPosition;
|
||||||
use crate::schema::{ColumnName, TableName};
|
use crate::schema::{ColumnName, TableName};
|
||||||
use crate::operation::InsertionValues;
|
use crate::operation::InsertionValues;
|
||||||
use crate::type_system::{DbType, Uuid, Value};
|
use crate::type_system::{DbType, Uuid, Value};
|
||||||
|
|
||||||
#[derive(Debug)]
|
#[derive(Debug, Error)]
|
||||||
pub enum Error {
|
pub enum Error {
|
||||||
|
#[error("table {0} does not exist")]
|
||||||
TableDoesNotExist(TableName),
|
TableDoesNotExist(TableName),
|
||||||
|
#[error("column {1} of table {0} does not exist")]
|
||||||
ColumnDoesNotExist(TableName, ColumnName),
|
ColumnDoesNotExist(TableName, ColumnName),
|
||||||
|
#[error("column position {1} of table {0} does not exist")]
|
||||||
ColumnPositionDoesNotExist(TableName, ColumnPosition),
|
ColumnPositionDoesNotExist(TableName, ColumnPosition),
|
||||||
|
#[error("column {1} of table {0} has unexpected type {2:?} and value {3:?}")]
|
||||||
ValueDoesNotMatchExpectedType(TableName, ColumnName, DbType, Value),
|
ValueDoesNotMatchExpectedType(TableName, ColumnName, DbType, Value),
|
||||||
|
#[error("table {0} already contains row with id {1}")]
|
||||||
AttemptingToInsertAlreadyPresentId(TableName, Uuid),
|
AttemptingToInsertAlreadyPresentId(TableName, Uuid),
|
||||||
|
#[error("table {0} is missing annotation for column {1}")]
|
||||||
MissingTypeAnnotationOfColumn(TableName, ColumnPosition),
|
MissingTypeAnnotationOfColumn(TableName, ColumnPosition),
|
||||||
|
#[error("table {0} is missing column {1} in insert values {2:?}")]
|
||||||
MissingColumnInInsertValues(TableName, ColumnName, InsertionValues),
|
MissingColumnInInsertValues(TableName, ColumnName, InsertionValues),
|
||||||
|
#[error("table {0} has mismatch between insert values {1:?} and columns")]
|
||||||
MismatchBetweenInsertValuesAndColumns(TableName, InsertionValues),
|
MismatchBetweenInsertValuesAndColumns(TableName, InsertionValues),
|
||||||
|
#[error("table {0} cannot be indexed on column {1}")]
|
||||||
AttemptToIndexNonIndexableColumn(TableName, ColumnName),
|
AttemptToIndexNonIndexableColumn(TableName, ColumnName),
|
||||||
}
|
}
|
||||||
|
|
||||||
|
#[derive(Debug, Error)]
|
||||||
|
pub enum TypeConversionError {
|
||||||
|
#[error("failed to decode bytes to string")]
|
||||||
|
TextDecodeFailed(#[from] Utf8Error),
|
||||||
|
#[error("failed to parse float from text")]
|
||||||
|
NumberDecodeFailed(#[from] ParseFloatError),
|
||||||
|
#[error("failed to parse int from text")]
|
||||||
|
IntDecodeFailed(#[from] ParseIntError),
|
||||||
|
#[error("unknown type with oid {oid} and size {size}")]
|
||||||
|
UnknownType {
|
||||||
|
oid: i32,
|
||||||
|
size: i16
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
|
||||||
|
|
@ -1,6 +1,7 @@
|
||||||
use crate::type_system::Value;
|
use crate::type_system::Value;
|
||||||
use std::ops::{Index, IndexMut};
|
use std::ops::{Index, IndexMut};
|
||||||
use std::slice::SliceIndex;
|
use std::slice::SliceIndex;
|
||||||
|
use crate::restricted_row::RestrictedRow;
|
||||||
|
|
||||||
pub type ColumnPosition = usize;
|
pub type ColumnPosition = usize;
|
||||||
|
|
||||||
|
|
@ -58,14 +59,15 @@ impl Row {
|
||||||
self.0.get(column_position)
|
self.0.get(column_position)
|
||||||
}
|
}
|
||||||
|
|
||||||
pub fn restrict_columns(&self, columns: &Vec<ColumnPosition>) -> Row {
|
pub fn restrict_columns(&self, columns: &Vec<ColumnPosition>) -> RestrictedRow {
|
||||||
// If the index from `columns` is non-existant in `row`, it will just ignore it.
|
// If the index from `columns` is non-existant in `row`, it will just ignore it.
|
||||||
let mut subrow: Row = Row::new();
|
let mut subrow: Vec<(ColumnPosition, Value)> = vec![];
|
||||||
for column_position in columns {
|
for column_position in columns {
|
||||||
if let Some(value) = self.get(*column_position) {
|
if let Some(value) = self.get(*column_position) {
|
||||||
subrow.0.push(value.clone())
|
subrow.push((*column_position, value.clone()));
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
subrow
|
|
||||||
|
subrow.into()
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
|
||||||
|
|
@ -3,6 +3,7 @@ use std::collections::{BTreeMap, HashMap, HashSet};
|
||||||
use crate::error::Error;
|
use crate::error::Error;
|
||||||
use crate::internals::column_index::ColumnIndex;
|
use crate::internals::column_index::ColumnIndex;
|
||||||
use crate::internals::row::{ColumnPosition, Row};
|
use crate::internals::row::{ColumnPosition, Row};
|
||||||
|
use crate::restricted_row::RestrictedRow;
|
||||||
use crate::schema::{ColumnName, TableSchema, TableName};
|
use crate::schema::{ColumnName, TableSchema, TableName};
|
||||||
use crate::result::DbResult;
|
use crate::result::DbResult;
|
||||||
use crate::type_system::{IndexableValue, Uuid, Value};
|
use crate::type_system::{IndexableValue, Uuid, Value};
|
||||||
|
|
@ -67,7 +68,7 @@ impl Table {
|
||||||
.collect()
|
.collect()
|
||||||
}
|
}
|
||||||
|
|
||||||
pub fn select_all_rows<'a>(&'a self, selected_column_positions: Vec<ColumnPosition>) -> impl Iterator<Item=Row> + 'a {
|
pub fn select_all_rows<'a>(&'a self, selected_column_positions: Vec<ColumnPosition>) -> impl Iterator<Item=RestrictedRow> + 'a {
|
||||||
self.rows
|
self.rows
|
||||||
.values()
|
.values()
|
||||||
.map(move |row| row.restrict_columns(&selected_column_positions))
|
.map(move |row| row.restrict_columns(&selected_column_positions))
|
||||||
|
|
@ -78,7 +79,7 @@ impl Table {
|
||||||
selected_column_positions: Vec<ColumnPosition>,
|
selected_column_positions: Vec<ColumnPosition>,
|
||||||
column_position: ColumnPosition,
|
column_position: ColumnPosition,
|
||||||
value: Value,
|
value: Value,
|
||||||
) -> DbResult<impl Iterator<Item=Row> + 'a> {
|
) -> DbResult<impl Iterator<Item=RestrictedRow> + 'a> {
|
||||||
let restrict_columns_of_row = move |row: Row| row.restrict_columns(&selected_column_positions);
|
let restrict_columns_of_row = move |row: Row| row.restrict_columns(&selected_column_positions);
|
||||||
match value {
|
match value {
|
||||||
Value::Indexable(value) => match self.fetch_ids_from_index(column_position, &value)? {
|
Value::Indexable(value) => match self.fetch_ids_from_index(column_position, &value)? {
|
||||||
|
|
|
||||||
|
|
@ -1,11 +1,12 @@
|
||||||
use crate::error::Error;
|
use crate::error::Error;
|
||||||
use crate::internals::row::{ColumnPosition, Row};
|
use crate::internals::row::ColumnPosition;
|
||||||
use crate::schema::{TableName, TableSchema};
|
use crate::schema::{TableName, TableSchema};
|
||||||
use crate::internals::table::Table;
|
use crate::internals::table::Table;
|
||||||
use crate::operation::{ColumnSelection, Condition, Operation};
|
use crate::operation::{ColumnSelection, Condition, Operation};
|
||||||
use crate::result::DbResult;
|
use crate::result::DbResult;
|
||||||
use crate::type_system::{DbType, IndexableValue, Value};
|
use crate::type_system::{DbType, IndexableValue, Value};
|
||||||
use bimap::BiMap;
|
use bimap::BiMap;
|
||||||
|
use crate::restricted_row::RestrictedRow;
|
||||||
|
|
||||||
// Use `TablePosition` as index
|
// Use `TablePosition` as index
|
||||||
pub type Tables = Vec<Table>;
|
pub type Tables = Vec<Table>;
|
||||||
|
|
@ -20,7 +21,7 @@ pub struct State {
|
||||||
|
|
||||||
// #[derive(Debug)]
|
// #[derive(Debug)]
|
||||||
pub enum Response<'a> {
|
pub enum Response<'a> {
|
||||||
Selected(Box<dyn Iterator<Item=Row> + 'a + Send>),
|
Selected(&'a TableSchema, Box<dyn Iterator<Item=RestrictedRow> + 'a + Send>),
|
||||||
Inserted,
|
Inserted,
|
||||||
Deleted(usize), // how many were deleted
|
Deleted(usize), // how many were deleted
|
||||||
TableCreated,
|
TableCreated,
|
||||||
|
|
@ -31,7 +32,7 @@ impl std::fmt::Debug for Response<'_> {
|
||||||
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> Result<(), std::fmt::Error> {
|
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> Result<(), std::fmt::Error> {
|
||||||
use Response::*;
|
use Response::*;
|
||||||
match self {
|
match self {
|
||||||
Selected(_rows) =>
|
Selected(_schema, _rows) =>
|
||||||
// TODO: How can we iterate through the rows without having to take ownership of
|
// TODO: How can we iterate through the rows without having to take ownership of
|
||||||
// them?
|
// them?
|
||||||
f.write_str("Some rows... trust me"),
|
f.write_str("Some rows... trust me"),
|
||||||
|
|
@ -109,7 +110,7 @@ impl State {
|
||||||
let selected_rows = match maybe_condition {
|
let selected_rows = match maybe_condition {
|
||||||
None => {
|
None => {
|
||||||
let x = table.select_all_rows(selected_column_positions);
|
let x = table.select_all_rows(selected_column_positions);
|
||||||
Box::new(x) as Box<dyn Iterator<Item=Row> + 'a + Send>
|
Box::new(x) as Box<dyn Iterator<Item=RestrictedRow> + 'a + Send>
|
||||||
},
|
},
|
||||||
|
|
||||||
Some(Condition::Eq(eq_column_name, value)) => {
|
Some(Condition::Eq(eq_column_name, value)) => {
|
||||||
|
|
@ -122,11 +123,11 @@ impl State {
|
||||||
eq_column_position,
|
eq_column_position,
|
||||||
value,
|
value,
|
||||||
)?;
|
)?;
|
||||||
Box::new(x) as Box<dyn Iterator<Item=Row> + 'a + Send>
|
Box::new(x) as Box<dyn Iterator<Item=RestrictedRow> + 'a + Send>
|
||||||
}
|
}
|
||||||
};
|
};
|
||||||
|
|
||||||
Ok(Response::Selected(selected_rows))
|
Ok(Response::Selected(table.schema(), selected_rows))
|
||||||
}
|
}
|
||||||
Insert(table_name, values) => {
|
Insert(table_name, values) => {
|
||||||
let table: &mut Table = self.table_from_name_mut(&table_name)?;
|
let table: &mut Table = self.table_from_name_mut(&table_name)?;
|
||||||
|
|
@ -220,8 +221,8 @@ mod tests {
|
||||||
let response: Response = state
|
let response: Response = state
|
||||||
.interpret(Operation::Select(users.clone(), ColumnSelection::All, None))
|
.interpret(Operation::Select(users.clone(), ColumnSelection::All, None))
|
||||||
.unwrap();
|
.unwrap();
|
||||||
assert!(matches!(response, Response::Selected(_)));
|
assert!(matches!(response, Response::Selected(_, _)));
|
||||||
let Response::Selected(rows) = response else {
|
let Response::Selected(_schema, rows) = response else {
|
||||||
panic!()
|
panic!()
|
||||||
};
|
};
|
||||||
let rows: Vec<_> = rows.collect();
|
let rows: Vec<_> = rows.collect();
|
||||||
|
|
@ -273,8 +274,8 @@ mod tests {
|
||||||
.interpret(Operation::Select(users.clone(), ColumnSelection::All, None))
|
.interpret(Operation::Select(users.clone(), ColumnSelection::All, None))
|
||||||
.unwrap();
|
.unwrap();
|
||||||
|
|
||||||
assert!(matches!(response, Response::Selected(_)));
|
assert!(matches!(response, Response::Selected(_, _)));
|
||||||
let Response::Selected(rows) = response else {
|
let Response::Selected(_schema, rows) = response else {
|
||||||
panic!()
|
panic!()
|
||||||
};
|
};
|
||||||
let rows: Vec<_> = rows.collect();
|
let rows: Vec<_> = rows.collect();
|
||||||
|
|
@ -282,9 +283,9 @@ mod tests {
|
||||||
let row = &rows[0];
|
let row = &rows[0];
|
||||||
|
|
||||||
assert!(row.len() == 3);
|
assert!(row.len() == 3);
|
||||||
assert!(row[0] == id);
|
assert!(row[0].1 == id);
|
||||||
assert!(row[1] == name);
|
assert!(row[1].1 == name);
|
||||||
assert!(row[2] == age);
|
assert!(row[2].1 == age);
|
||||||
}
|
}
|
||||||
|
|
||||||
#[test]
|
#[test]
|
||||||
|
|
@ -338,24 +339,25 @@ mod tests {
|
||||||
{
|
{
|
||||||
let response: Response = state.interpret(Select(users.clone(), All, None)).unwrap();
|
let response: Response = state.interpret(Select(users.clone(), All, None)).unwrap();
|
||||||
|
|
||||||
assert!(matches!(response, Response::Selected(_)));
|
assert!(matches!(response, Response::Selected(_, _)));
|
||||||
let Response::Selected(rows) = response else {
|
let Response::Selected(_, rows) = response else {
|
||||||
panic!()
|
panic!()
|
||||||
};
|
};
|
||||||
|
|
||||||
let rows: Vec<_> = rows.collect();
|
let rows: Vec<_> = rows.collect();
|
||||||
assert!(rows.len() == 2);
|
assert!(rows.len() == 2);
|
||||||
let row0 = &rows[0];
|
let row0 = &rows[0];
|
||||||
let row1 = &rows[1];
|
let row1 = &rows[1];
|
||||||
|
|
||||||
assert!(row0.len() == 3);
|
assert!(row0.len() == 3);
|
||||||
assert!(row0[0] == id0);
|
assert!(row0[0].1 == id0);
|
||||||
assert!(row0[1] == name0);
|
assert!(row0[1].1 == name0);
|
||||||
assert!(row0[2] == age0);
|
assert!(row0[2].1 == age0);
|
||||||
|
|
||||||
assert!(row1.len() == 3);
|
assert!(row1.len() == 3);
|
||||||
assert!(row1[0] == id1);
|
assert!(row1[0].1 == id1);
|
||||||
assert!(row1[1] == name1);
|
assert!(row1[1].1 == name1);
|
||||||
assert!(row1[2] == age1);
|
assert!(row1[2].1 == age1);
|
||||||
}
|
}
|
||||||
|
|
||||||
{
|
{
|
||||||
|
|
@ -366,8 +368,8 @@ mod tests {
|
||||||
Some(Eq("id".to_string(), id0.clone())),
|
Some(Eq("id".to_string(), id0.clone())),
|
||||||
))
|
))
|
||||||
.unwrap();
|
.unwrap();
|
||||||
assert!(matches!(response, Response::Selected(_)));
|
assert!(matches!(response, Response::Selected(_, _)));
|
||||||
let Response::Selected(rows) = response else {
|
let Response::Selected(_, rows) = response else {
|
||||||
panic!()
|
panic!()
|
||||||
};
|
};
|
||||||
let rows: Vec<_> = rows.collect();
|
let rows: Vec<_> = rows.collect();
|
||||||
|
|
@ -375,9 +377,9 @@ mod tests {
|
||||||
let row0 = &rows[0];
|
let row0 = &rows[0];
|
||||||
|
|
||||||
assert!(row0.len() == 3);
|
assert!(row0.len() == 3);
|
||||||
assert!(row0[0] == id0);
|
assert!(row0[0].1 == id0);
|
||||||
assert!(row0[1] == name0);
|
assert!(row0[1].1 == name0);
|
||||||
assert!(row0[2] == age0);
|
assert!(row0[2].1 == age0);
|
||||||
}
|
}
|
||||||
|
|
||||||
{
|
{
|
||||||
|
|
@ -388,8 +390,8 @@ mod tests {
|
||||||
Some(Eq("id".to_string(), id0.clone())),
|
Some(Eq("id".to_string(), id0.clone())),
|
||||||
))
|
))
|
||||||
.unwrap();
|
.unwrap();
|
||||||
assert!(matches!(response, Response::Selected(_)));
|
assert!(matches!(response, Response::Selected(_, _)));
|
||||||
let Response::Selected(rows) = response else {
|
let Response::Selected(_, rows) = response else {
|
||||||
panic!()
|
panic!()
|
||||||
};
|
};
|
||||||
let rows: Vec<_> = rows.collect();
|
let rows: Vec<_> = rows.collect();
|
||||||
|
|
@ -397,8 +399,8 @@ mod tests {
|
||||||
let row0 = &rows[0];
|
let row0 = &rows[0];
|
||||||
|
|
||||||
assert!(row0.len() == 2);
|
assert!(row0.len() == 2);
|
||||||
assert!(row0[0] == name0);
|
assert!(row0[0].1 == name0);
|
||||||
assert!(row0[1] == id0);
|
assert!(row0[1].1 == id0);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
@ -462,8 +464,8 @@ mod tests {
|
||||||
|
|
||||||
let response: Response = state.interpret(Select(users.clone(), All, None)).unwrap();
|
let response: Response = state.interpret(Select(users.clone(), All, None)).unwrap();
|
||||||
|
|
||||||
assert!(matches!(response, Response::Selected(_)));
|
assert!(matches!(response, Response::Selected(_, _)));
|
||||||
let Response::Selected(rows) = response else {
|
let Response::Selected(_, rows) = response else {
|
||||||
panic!()
|
panic!()
|
||||||
};
|
};
|
||||||
let rows: Vec<_> = rows.collect();
|
let rows: Vec<_> = rows.collect();
|
||||||
|
|
@ -471,9 +473,9 @@ mod tests {
|
||||||
let row = &rows[0];
|
let row = &rows[0];
|
||||||
|
|
||||||
assert!(row.len() == 3);
|
assert!(row.len() == 3);
|
||||||
assert!(row[0] == id1);
|
assert!(row[0].1 == id1);
|
||||||
assert!(row[1] == name1);
|
assert!(row[1].1 == name1);
|
||||||
assert!(row[2] == age1);
|
assert!(row[2].1 == age1);
|
||||||
}
|
}
|
||||||
|
|
||||||
#[test]
|
#[test]
|
||||||
|
|
|
||||||
|
|
@ -5,3 +5,4 @@ pub mod type_system;
|
||||||
mod error;
|
mod error;
|
||||||
mod internals;
|
mod internals;
|
||||||
mod result;
|
mod result;
|
||||||
|
pub mod restricted_row;
|
||||||
|
|
|
||||||
|
|
@ -6,6 +6,7 @@ use crate::type_system::Value;
|
||||||
// Perhaps consider factoring the table name out
|
// Perhaps consider factoring the table name out
|
||||||
// and think of the operations as operating on a unique table.
|
// and think of the operations as operating on a unique table.
|
||||||
// TODO: `TableName` should be replaced by `TablePosition`
|
// TODO: `TableName` should be replaced by `TablePosition`
|
||||||
|
#[derive(Debug)]
|
||||||
pub enum Operation {
|
pub enum Operation {
|
||||||
Select(TableName, ColumnSelection, Option<Condition>),
|
Select(TableName, ColumnSelection, Option<Condition>),
|
||||||
Insert(TableName, InsertionValues),
|
Insert(TableName, InsertionValues),
|
||||||
|
|
@ -18,11 +19,13 @@ pub enum Operation {
|
||||||
|
|
||||||
pub type InsertionValues = Vec<(ColumnName, Value)>;
|
pub type InsertionValues = Vec<(ColumnName, Value)>;
|
||||||
|
|
||||||
|
#[derive(Debug)]
|
||||||
pub enum ColumnSelection {
|
pub enum ColumnSelection {
|
||||||
All,
|
All,
|
||||||
Columns(Vec<ColumnName>),
|
Columns(Vec<ColumnName>),
|
||||||
}
|
}
|
||||||
|
|
||||||
|
#[derive(Debug)]
|
||||||
pub enum Condition {
|
pub enum Condition {
|
||||||
// And(Box<Condition>, Box<Condition>),
|
// And(Box<Condition>, Box<Condition>),
|
||||||
// Or(Box<Condition>, Box<Condition>),
|
// Or(Box<Condition>, Box<Condition>),
|
||||||
|
|
|
||||||
35
minisql/src/restricted_row.rs
Normal file
35
minisql/src/restricted_row.rs
Normal file
|
|
@ -0,0 +1,35 @@
|
||||||
|
use std::ops::Index;
|
||||||
|
use std::slice::SliceIndex;
|
||||||
|
use crate::internals::row::ColumnPosition;
|
||||||
|
use crate::type_system::Value;
|
||||||
|
|
||||||
|
#[derive(Debug, Clone)]
|
||||||
|
pub struct RestrictedRow(Vec<(ColumnPosition, Value)>);
|
||||||
|
|
||||||
|
impl<Idx> Index<Idx> for RestrictedRow
|
||||||
|
where
|
||||||
|
Idx: SliceIndex<[(ColumnPosition, Value)]>,
|
||||||
|
{
|
||||||
|
type Output = Idx::Output;
|
||||||
|
|
||||||
|
fn index(&self, index: Idx) -> &Self::Output {
|
||||||
|
&self.0[index]
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl From<Vec<(ColumnPosition, Value)>> for RestrictedRow {
|
||||||
|
fn from(v: Vec<(ColumnPosition, Value)>) -> Self {
|
||||||
|
RestrictedRow(v)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl RestrictedRow {
|
||||||
|
pub fn len(&self) -> usize {
|
||||||
|
self.0.len()
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn iter(&self) -> impl Iterator<Item=&(ColumnPosition, Value)> {
|
||||||
|
self.0.iter()
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
|
@ -1,3 +1,5 @@
|
||||||
|
use crate::error::TypeConversionError;
|
||||||
|
|
||||||
// ==============Types================
|
// ==============Types================
|
||||||
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
|
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
|
||||||
pub enum DbType {
|
pub enum DbType {
|
||||||
|
|
@ -39,4 +41,156 @@ impl Value {
|
||||||
},
|
},
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
pub fn type_oid(&self) -> i32 {
|
||||||
|
match self {
|
||||||
|
Self::Number(_) => 701,
|
||||||
|
Self::Indexable(val) => match val {
|
||||||
|
IndexableValue::String(_) => 25,
|
||||||
|
IndexableValue::Int(_) => 23,
|
||||||
|
IndexableValue::Uuid(_) => 2950,
|
||||||
|
},
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn type_size(&self) -> i16 {
|
||||||
|
match self {
|
||||||
|
Self::Number(_) => 8,
|
||||||
|
Self::Indexable(val) => match val {
|
||||||
|
IndexableValue::String(_) => -2, // null terminated string
|
||||||
|
IndexableValue::Int(_) => 8,
|
||||||
|
IndexableValue::Uuid(_) => 16,
|
||||||
|
},
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn as_text_bytes(&self) -> Vec<u8> {
|
||||||
|
match self {
|
||||||
|
Self::Number(n) => format!("{n}").into_bytes(),
|
||||||
|
Self::Indexable(i) => match i {
|
||||||
|
IndexableValue::String(s) => format!("{s}\0").into_bytes(),
|
||||||
|
IndexableValue::Int(i) => format!("{i}").into_bytes(),
|
||||||
|
IndexableValue::Uuid(u) => format!("{u}").into_bytes(),
|
||||||
|
},
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn from_text_bytes(bytes: &[u8], type_oid: i32, type_size: i16) -> Result<Value, TypeConversionError> {
|
||||||
|
match (type_oid, type_size) {
|
||||||
|
(701, 8) => {
|
||||||
|
let s = std::str::from_utf8(bytes)?;
|
||||||
|
let n = s.parse::<f64>()?;
|
||||||
|
Ok(Value::Number(n))
|
||||||
|
}
|
||||||
|
(25, -2) => {
|
||||||
|
let s = std::str::from_utf8(bytes)?;
|
||||||
|
let s = &s[..s.len() - 1]; // remove null terminator
|
||||||
|
Ok(Value::Indexable(IndexableValue::String(s.to_string())))
|
||||||
|
}
|
||||||
|
(23, 8) => {
|
||||||
|
let s = std::str::from_utf8(bytes)?;
|
||||||
|
let n = s.parse::<u64>()?;
|
||||||
|
Ok(Value::Indexable(IndexableValue::Int(n)))
|
||||||
|
}
|
||||||
|
(2950, 16) => {
|
||||||
|
let s = std::str::from_utf8(bytes)?;
|
||||||
|
let n = s.parse::<Uuid>()?;
|
||||||
|
Ok(Value::Indexable(IndexableValue::Uuid(n)))
|
||||||
|
}
|
||||||
|
(oid, size) => Err(TypeConversionError::UnknownType { oid, size }),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
#[cfg(test)]
|
||||||
|
mod tests {
|
||||||
|
use crate::error::TypeConversionError::UnknownType;
|
||||||
|
use super::{Value, IndexableValue};
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn test_encode_number() {
|
||||||
|
let value = Value::Number(123.456);
|
||||||
|
let oid = value.type_oid();
|
||||||
|
let size = value.type_size();
|
||||||
|
|
||||||
|
let bytes = value.as_text_bytes();
|
||||||
|
let from_bytes = Value::from_text_bytes(&bytes, oid, size).unwrap();
|
||||||
|
|
||||||
|
assert_eq!(value, from_bytes);
|
||||||
|
|
||||||
|
assert_eq!(oid, 701);
|
||||||
|
assert_eq!(size, 8);
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn test_encode_string() {
|
||||||
|
let value = Value::Indexable(IndexableValue::String("hello".to_string()));
|
||||||
|
let oid = value.type_oid();
|
||||||
|
let size = value.type_size();
|
||||||
|
|
||||||
|
let bytes = value.as_text_bytes();
|
||||||
|
let from_bytes = Value::from_text_bytes(&bytes, oid, size).unwrap();
|
||||||
|
|
||||||
|
assert_eq!(value, from_bytes);
|
||||||
|
|
||||||
|
assert_eq!(oid, 25);
|
||||||
|
assert_eq!(size, -2);
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn test_encode_string_utf8() {
|
||||||
|
let value = Value::Indexable(IndexableValue::String("#速度与激情9 早上好中国 现在我有冰激淋 我很喜欢冰激淋 但是《速度与激情9》比冰激淋 🍧🍦🍨".to_string()));
|
||||||
|
let oid = value.type_oid();
|
||||||
|
let size = value.type_size();
|
||||||
|
|
||||||
|
let bytes = value.as_text_bytes();
|
||||||
|
let from_bytes = Value::from_text_bytes(&bytes, oid, size).unwrap();
|
||||||
|
|
||||||
|
assert_eq!(value, from_bytes);
|
||||||
|
|
||||||
|
assert_eq!(oid, 25);
|
||||||
|
assert_eq!(size, -2);
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn test_encode_int() {
|
||||||
|
let value = Value::Indexable(IndexableValue::Int(123));
|
||||||
|
let oid = value.type_oid();
|
||||||
|
let size = value.type_size();
|
||||||
|
|
||||||
|
let bytes = value.as_text_bytes();
|
||||||
|
let from_bytes = Value::from_text_bytes(&bytes, oid, size).unwrap();
|
||||||
|
|
||||||
|
assert_eq!(value, from_bytes);
|
||||||
|
|
||||||
|
assert_eq!(oid, 23);
|
||||||
|
assert_eq!(size, 8);
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn test_encode_uuid() {
|
||||||
|
let value = Value::Indexable(IndexableValue::Uuid(123));
|
||||||
|
let oid = value.type_oid();
|
||||||
|
let size = value.type_size();
|
||||||
|
|
||||||
|
let bytes = value.as_text_bytes();
|
||||||
|
let from_bytes = Value::from_text_bytes(&bytes, oid, size).unwrap();
|
||||||
|
|
||||||
|
assert_eq!(value, from_bytes);
|
||||||
|
|
||||||
|
assert_eq!(oid, 2950);
|
||||||
|
assert_eq!(size, 16);
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn test_mismatched_size() {
|
||||||
|
let value = Value::Indexable(IndexableValue::Uuid(123));
|
||||||
|
let oid = value.type_oid();
|
||||||
|
let size = 8;
|
||||||
|
|
||||||
|
let bytes = value.as_text_bytes();
|
||||||
|
let from_bytes = Value::from_text_bytes(&bytes, oid, size);
|
||||||
|
|
||||||
|
assert!(matches!(from_bytes, Err(UnknownType { oid: 2950, size: 8 })))
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
|
||||||
|
|
@ -4,6 +4,7 @@ use crate::reader::errors::{ProtoConsumeError, ProtoPeekError, ProtoReadError};
|
||||||
use crate::writer::errors::ProtoWriteError;
|
use crate::writer::errors::ProtoWriteError;
|
||||||
use thiserror::Error;
|
use thiserror::Error;
|
||||||
use tokio::io;
|
use tokio::io;
|
||||||
|
use crate::message::special::CancelRequestData;
|
||||||
|
|
||||||
#[derive(Debug, Error)]
|
#[derive(Debug, Error)]
|
||||||
pub enum ClientHandshakeError {
|
pub enum ClientHandshakeError {
|
||||||
|
|
@ -23,6 +24,8 @@ pub enum ClientHandshakeError {
|
||||||
pub enum ServerHandshakeError {
|
pub enum ServerHandshakeError {
|
||||||
#[error("startup message not found")]
|
#[error("startup message not found")]
|
||||||
MissingStartupMessage,
|
MissingStartupMessage,
|
||||||
|
#[error("cancel request found instead of startup message")]
|
||||||
|
IsCancelRequest(CancelRequestData),
|
||||||
#[error("socket communication failed")]
|
#[error("socket communication failed")]
|
||||||
Io(#[from] io::Error),
|
Io(#[from] io::Error),
|
||||||
#[error("deserialization of inner data failed")]
|
#[error("deserialization of inner data failed")]
|
||||||
|
|
|
||||||
|
|
@ -8,6 +8,7 @@ use crate::writer::backend::BackendProtoWriter;
|
||||||
use crate::writer::protowriter::ProtoFlush;
|
use crate::writer::protowriter::ProtoFlush;
|
||||||
|
|
||||||
/// Performs server-side handshake with the client until ending it with `ReadyForQuery` message.
|
/// Performs server-side handshake with the client until ending it with `ReadyForQuery` message.
|
||||||
|
/// Client can send `CancelRequest` message instead of `StartupMessage` to cancel the request.
|
||||||
/// For more info visit the [`55.2.1. Start-up`](https://www.postgresql.org/docs/current/protocol-flow.html#PROTOCOL-FLOW-START-UP)
|
/// For more info visit the [`55.2.1. Start-up`](https://www.postgresql.org/docs/current/protocol-flow.html#PROTOCOL-FLOW-START-UP)
|
||||||
pub async fn do_server_handshake(
|
pub async fn do_server_handshake(
|
||||||
writer: &mut (impl BackendProtoWriter + ProtoFlush),
|
writer: &mut (impl BackendProtoWriter + ProtoFlush),
|
||||||
|
|
@ -27,12 +28,16 @@ pub async fn do_server_handshake(
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
// Wait for mandatory StartupMessage
|
// Wait for mandatory StartupMessage or CancelRequest
|
||||||
let startup_message = match &reader.peek_special_message().await? {
|
let startup_message = match &reader.peek_special_message().await? {
|
||||||
Some(msg @ SpecialMessage::StartupMessage(data)) => {
|
Some(msg @ SpecialMessage::StartupMessage(data)) => {
|
||||||
reader.consume_special_message(msg).await?;
|
reader.consume_special_message(msg).await?;
|
||||||
data.clone()
|
data.clone()
|
||||||
}
|
}
|
||||||
|
Some(msg @ SpecialMessage::CancelRequest(data)) => {
|
||||||
|
reader.consume_special_message(msg).await?;
|
||||||
|
return Err(ServerHandshakeError::IsCancelRequest(data.clone()));
|
||||||
|
}
|
||||||
_ => {
|
_ => {
|
||||||
return Err(ServerHandshakeError::MissingStartupMessage);
|
return Err(ServerHandshakeError::MissingStartupMessage);
|
||||||
}
|
}
|
||||||
|
|
|
||||||
|
|
@ -8,6 +8,9 @@ edition = "2021"
|
||||||
[dependencies]
|
[dependencies]
|
||||||
tokio = { version = "1.35.1", features = ["full"] }
|
tokio = { version = "1.35.1", features = ["full"] }
|
||||||
anyhow = "1.0.76"
|
anyhow = "1.0.76"
|
||||||
proto = { path = "../proto" }
|
clap = { version = "4.4.18", features = ["derive"] }
|
||||||
|
async-trait = "0.1.74"
|
||||||
|
rand = "0.8.5"
|
||||||
minisql = { path = "../minisql" }
|
minisql = { path = "../minisql" }
|
||||||
|
proto = { path = "../proto" }
|
||||||
parser = { path = "../parser" }
|
parser = { path = "../parser" }
|
||||||
34
server/src/cancellation.rs
Normal file
34
server/src/cancellation.rs
Normal file
|
|
@ -0,0 +1,34 @@
|
||||||
|
use std::sync::Arc;
|
||||||
|
use std::sync::atomic::{AtomicBool, Ordering};
|
||||||
|
|
||||||
|
pub struct ResetCancelToken {
|
||||||
|
is_canceled: Arc<AtomicBool>,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl ResetCancelToken {
|
||||||
|
pub fn new() -> Self {
|
||||||
|
Self {
|
||||||
|
is_canceled: Arc::new(AtomicBool::new(false)),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn is_canceled(&self) -> bool {
|
||||||
|
self.is_canceled.load(Ordering::SeqCst)
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn cancel(&self) {
|
||||||
|
self.is_canceled.store(true, Ordering::SeqCst);
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn reset(&self) {
|
||||||
|
self.is_canceled.store(false, Ordering::SeqCst);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Clone for ResetCancelToken {
|
||||||
|
fn clone(&self) -> Self {
|
||||||
|
Self {
|
||||||
|
is_canceled: self.is_canceled.clone(),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
28
server/src/config.rs
Normal file
28
server/src/config.rs
Normal file
|
|
@ -0,0 +1,28 @@
|
||||||
|
use std::net::{IpAddr, Ipv4Addr, SocketAddr};
|
||||||
|
use std::path::PathBuf;
|
||||||
|
use clap::Parser;
|
||||||
|
|
||||||
|
const LOCAL_IPV4: IpAddr = IpAddr::V4(Ipv4Addr::LOCALHOST);
|
||||||
|
|
||||||
|
#[derive(Debug, Parser)]
|
||||||
|
#[command(author, version, about)]
|
||||||
|
pub struct Configuration {
|
||||||
|
#[arg(short, long, default_value_t = LOCAL_IPV4, help = "IP address for the server to listen on")]
|
||||||
|
address: IpAddr,
|
||||||
|
#[arg(short, long, default_value = "5432", help = "Port for the server to listen on")]
|
||||||
|
port: u16,
|
||||||
|
#[arg(short, long, help = "Path to the data file")]
|
||||||
|
file: PathBuf,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Configuration {
|
||||||
|
#[inline]
|
||||||
|
pub fn get_socket_address(&self) -> SocketAddr {
|
||||||
|
SocketAddr::new(self.address, self.port)
|
||||||
|
}
|
||||||
|
|
||||||
|
#[inline]
|
||||||
|
pub fn get_file_path(&self) -> &PathBuf {
|
||||||
|
&self.file
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -1,78 +1,139 @@
|
||||||
use minisql::interpreter::State;
|
use std::collections::HashMap;
|
||||||
use parser::{parse_and_validate, Error};
|
use std::sync::Arc;
|
||||||
|
|
||||||
|
use clap::Parser;
|
||||||
|
use tokio::io::{BufReader, BufWriter};
|
||||||
|
use tokio::net::{TcpListener, TcpStream};
|
||||||
|
use tokio::sync::{Mutex, RwLock};
|
||||||
|
|
||||||
|
use minisql::interpreter::{Response, State};
|
||||||
|
use parser::parse_and_validate;
|
||||||
|
use proto::handshake::errors::ServerHandshakeError;
|
||||||
|
use proto::handshake::request::HandshakeRequest;
|
||||||
use proto::handshake::response::HandshakeResponse;
|
use proto::handshake::response::HandshakeResponse;
|
||||||
use proto::handshake::server::do_server_handshake;
|
use proto::handshake::server::do_server_handshake;
|
||||||
use proto::message::backend::{
|
|
||||||
BackendMessage, ColumnDescription, CommandCompleteData, DataRowData, ErrorResponseData,
|
|
||||||
ReadyForQueryData, RowDescriptionData,
|
|
||||||
};
|
|
||||||
use proto::message::frontend::FrontendMessage;
|
use proto::message::frontend::FrontendMessage;
|
||||||
use proto::reader::oneway::OneWayProtoReader;
|
use proto::reader::frontend::FrontendProtoReader;
|
||||||
use proto::reader::protoreader::ProtoReader;
|
use proto::reader::protoreader::ProtoReader;
|
||||||
use proto::writer::backend::BackendProtoWriter;
|
use proto::writer::backend::BackendProtoWriter;
|
||||||
use proto::writer::protowriter::{ProtoFlush, ProtoWriter};
|
use proto::writer::protowriter::{ProtoFlush, ProtoWriter};
|
||||||
use tokio::io::{BufReader, BufWriter};
|
|
||||||
use tokio::net::{TcpListener, TcpStream};
|
use crate::cancellation::ResetCancelToken;
|
||||||
|
use crate::config::Configuration;
|
||||||
|
use crate::proto_wrapper::{CompleteStatus, ServerProto};
|
||||||
|
|
||||||
|
mod config;
|
||||||
|
mod proto_wrapper;
|
||||||
|
mod cancellation;
|
||||||
|
|
||||||
|
type TokenStore = Arc<Mutex<HashMap<(i32, i32), ResetCancelToken>>>;
|
||||||
|
type SharedDbState = Arc<RwLock<State>>;
|
||||||
|
|
||||||
#[tokio::main]
|
#[tokio::main]
|
||||||
async fn main() -> anyhow::Result<()> {
|
async fn main() -> anyhow::Result<()> {
|
||||||
let addr = "0.0.0.0:5432";
|
let config = Configuration::parse();
|
||||||
|
|
||||||
|
let state = Arc::new(RwLock::new(State::new()));
|
||||||
|
let tokens = Arc::new(Mutex::new(HashMap::<(i32, i32), ResetCancelToken>::new()));
|
||||||
|
|
||||||
|
let addr = config.get_socket_address();
|
||||||
let listener = TcpListener::bind(&addr).await?;
|
let listener = TcpListener::bind(&addr).await?;
|
||||||
println!("Server started at {addr}");
|
println!("Server started at {addr}");
|
||||||
|
|
||||||
loop {
|
loop {
|
||||||
|
let state = state.clone();
|
||||||
|
let tokens = tokens.clone();
|
||||||
|
|
||||||
let (socket, _) = listener.accept().await?;
|
let (socket, _) = listener.accept().await?;
|
||||||
println!("New client connected: {}", socket.peer_addr()?);
|
println!("New client connected: {}", socket.peer_addr()?);
|
||||||
tokio::spawn(async move {
|
tokio::spawn(async move {
|
||||||
let reason = handle_stream(socket).await;
|
let reason = handle_stream(socket, state, tokens).await;
|
||||||
println!("Client disconnected: {reason:?}");
|
println!("Client disconnected: {reason:?}");
|
||||||
});
|
});
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
async fn handle_stream(mut stream: TcpStream) -> anyhow::Result<()> {
|
async fn handle_stream(mut stream: TcpStream, state: SharedDbState, tokens: TokenStore) -> anyhow::Result<()> {
|
||||||
let (reader, writer) = stream.split();
|
let (reader, writer) = stream.split();
|
||||||
let mut writer = ProtoWriter::new(BufWriter::new(writer));
|
let mut writer = ProtoWriter::new(BufWriter::new(writer));
|
||||||
let mut reader = ProtoReader::new(BufReader::new(reader), 1024);
|
let mut reader = ProtoReader::new(BufReader::new(reader), 1024);
|
||||||
|
|
||||||
let response = HandshakeResponse::new("minisql", 123, 123);
|
// Create a token with random PID and key
|
||||||
|
let (pid, key, token) = create_token(&tokens).await?;
|
||||||
|
|
||||||
let request = do_server_handshake(&mut writer, &mut reader, response).await?;
|
// Handle handshake
|
||||||
|
let response = HandshakeResponse::new("minisql", pid, key);
|
||||||
|
let request = do_server_handshake(&mut writer, &mut reader, response).await;
|
||||||
|
|
||||||
println!("Handshake complete:\n{request:?}");
|
let result = match request {
|
||||||
let mut state = State::new();
|
Ok(req) => handle_connection(&mut reader, &mut writer, req, state, token).await,
|
||||||
|
Err(ServerHandshakeError::IsCancelRequest(cancel)) => handle_cancellation(cancel.pid, cancel.secret, &tokens).await,
|
||||||
|
Err(e) => Err(anyhow::anyhow!("Error during handshake: {:?}", e)),
|
||||||
|
};
|
||||||
|
|
||||||
|
// Release cancellation token
|
||||||
|
let mut tokens = tokens.lock().await;
|
||||||
|
tokens.remove(&(pid, key));
|
||||||
|
|
||||||
|
result
|
||||||
|
}
|
||||||
|
|
||||||
|
fn random_pid_key() -> (i32, i32) {
|
||||||
|
let pid = rand::random::<i32>();
|
||||||
|
let key = rand::random::<i32>();
|
||||||
|
(pid, key)
|
||||||
|
}
|
||||||
|
|
||||||
|
async fn create_token(tokens: &TokenStore) -> anyhow::Result<(i32, i32, ResetCancelToken)> {
|
||||||
|
let token = ResetCancelToken::new();
|
||||||
|
let mut tokens = tokens.lock().await;
|
||||||
|
loop {
|
||||||
|
let pid_key = random_pid_key();
|
||||||
|
if !tokens.contains_key(&pid_key) {
|
||||||
|
tokens.insert(pid_key, token.clone());
|
||||||
|
|
||||||
|
let (pid, key) = pid_key;
|
||||||
|
return Ok((pid, key, token));
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
async fn handle_cancellation(pid: i32, key: i32, tokens: &TokenStore) -> anyhow::Result<()> {
|
||||||
|
println!("Cancel request, PID: {}, Key: {}", pid, key);
|
||||||
|
|
||||||
|
let tokens = tokens.lock().await;
|
||||||
|
let token = tokens.get(&(pid, key));
|
||||||
|
match token {
|
||||||
|
Some(t) => t.cancel(),
|
||||||
|
None => return Err(anyhow::anyhow!("Invalid PID and Key cancel combination")),
|
||||||
|
}
|
||||||
|
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
|
||||||
|
async fn handle_connection<R, W>(reader: &mut R, writer: &mut W, request: HandshakeRequest, state: SharedDbState, token: ResetCancelToken) -> anyhow::Result<()>
|
||||||
|
where
|
||||||
|
R: FrontendProtoReader + Send,
|
||||||
|
W: BackendProtoWriter + ProtoFlush + Send,
|
||||||
|
{
|
||||||
|
println!("Client connected: {:?}", request);
|
||||||
|
|
||||||
loop {
|
loop {
|
||||||
println!("Waiting for next message");
|
|
||||||
let next: FrontendMessage = reader.read_proto().await?;
|
let next: FrontendMessage = reader.read_proto().await?;
|
||||||
|
|
||||||
match next {
|
match next {
|
||||||
FrontendMessage::Terminate => {
|
FrontendMessage::Terminate => {
|
||||||
println!("Received Terminate");
|
|
||||||
break;
|
break;
|
||||||
}
|
}
|
||||||
FrontendMessage::Query(data) => {
|
FrontendMessage::Query(data) => {
|
||||||
println!("Received Query: {:?}", data);
|
let result = handle_query(writer, &state, data.query.into(), &token).await;
|
||||||
let metadata = state.metadata();
|
match result {
|
||||||
match parse_and_validate(data.query.as_str().to_string(), &metadata) {
|
Ok(_) => {}
|
||||||
Ok(operation) => {
|
Err(e) => {
|
||||||
match state.interpret(operation) {
|
writer.write_error_message(&e.to_string()).await?
|
||||||
Ok(_) => {
|
|
||||||
send_query_response(&mut writer).await?;
|
|
||||||
}
|
|
||||||
Err(err) => {
|
|
||||||
send_error_response(&mut writer, &format!("error interpreting: {:?}", err)).await?;
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
},
|
writer.write_ready_for_query().await?;
|
||||||
Err(Error::ParsingError(err)) => {
|
|
||||||
send_error_response(&mut writer, &format!("parsing error: {:?}", err)).await?;
|
|
||||||
}
|
|
||||||
Err(Error::ValidationError(v)) => {
|
|
||||||
send_error_response(&mut writer, &format!("validation error: {:?}", v)).await?;
|
|
||||||
}
|
|
||||||
};
|
|
||||||
send_ready_for_query(&mut writer).await?;
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
writer.flush().await?;
|
writer.flush().await?;
|
||||||
|
|
@ -81,117 +142,47 @@ async fn handle_stream(mut stream: TcpStream) -> anyhow::Result<()> {
|
||||||
Ok(())
|
Ok(())
|
||||||
}
|
}
|
||||||
|
|
||||||
async fn send_error_response(
|
async fn handle_query<W>(writer: &mut W, state: &SharedDbState, query: String, token: &ResetCancelToken) -> anyhow::Result<()>
|
||||||
writer: &mut impl BackendProtoWriter,
|
where
|
||||||
error_message: &str,
|
W: BackendProtoWriter + ProtoFlush + Send,
|
||||||
) -> anyhow::Result<()> {
|
{
|
||||||
writer
|
let operation = {
|
||||||
.write_proto(
|
let state = state.read().await;
|
||||||
ErrorResponseData {
|
let metadata = state.metadata();
|
||||||
code: b'M',
|
parse_and_validate(query, &metadata)?
|
||||||
message: error_message.to_string().into(),
|
};
|
||||||
|
|
||||||
|
let mut state = state.write().await;
|
||||||
|
let response = state.interpret(operation)?;
|
||||||
|
|
||||||
|
match response {
|
||||||
|
Response::Deleted(i) => writer.write_command_complete(CompleteStatus::Delete(i)).await?,
|
||||||
|
Response::Inserted => writer.write_command_complete(CompleteStatus::Insert { oid: 0, rows: 1 }).await?,
|
||||||
|
Response::Selected(schema, mut rows) => {
|
||||||
|
match rows.next() {
|
||||||
|
Some(row) => {
|
||||||
|
writer.write_table_header(&schema, &row).await?;
|
||||||
|
writer.write_table_row(&row).await?;
|
||||||
|
|
||||||
|
let mut sent_rows = 1;
|
||||||
|
for row in rows {
|
||||||
|
sent_rows += 1;
|
||||||
|
writer.write_table_row(&row).await?;
|
||||||
|
if token.is_canceled() {
|
||||||
|
token.reset();
|
||||||
|
break;
|
||||||
}
|
}
|
||||||
.into(),
|
|
||||||
)
|
|
||||||
.await?;
|
|
||||||
|
|
||||||
Ok(())
|
|
||||||
}
|
|
||||||
|
|
||||||
async fn send_ready_for_query(writer: &mut impl BackendProtoWriter) -> anyhow::Result<()> {
|
|
||||||
writer
|
|
||||||
.write_proto(BackendMessage::from(ReadyForQueryData { status: b'I' }))
|
|
||||||
.await?;
|
|
||||||
|
|
||||||
Ok(())
|
|
||||||
}
|
|
||||||
|
|
||||||
async fn send_empty_query(writer: &mut impl BackendProtoWriter) -> anyhow::Result<()> {
|
|
||||||
writer
|
|
||||||
.write_proto(BackendMessage::EmptyQueryResponse)
|
|
||||||
.await?;
|
|
||||||
|
|
||||||
Ok(())
|
|
||||||
}
|
|
||||||
|
|
||||||
async fn send_row_description(writer: &mut impl BackendProtoWriter) -> anyhow::Result<()> {
|
|
||||||
let columns = vec![
|
|
||||||
ColumnDescription {
|
|
||||||
name: "id".to_string().into(),
|
|
||||||
table_oid: 123,
|
|
||||||
column_index: 1,
|
|
||||||
type_oid: 23,
|
|
||||||
type_size: 4,
|
|
||||||
type_modifier: -1,
|
|
||||||
format_code: 0,
|
|
||||||
},
|
|
||||||
ColumnDescription {
|
|
||||||
name: "argument".to_string().into(),
|
|
||||||
table_oid: 123,
|
|
||||||
column_index: 2,
|
|
||||||
type_oid: 23,
|
|
||||||
type_size: 4,
|
|
||||||
type_modifier: -1,
|
|
||||||
format_code: 0,
|
|
||||||
},
|
|
||||||
ColumnDescription {
|
|
||||||
name: "description".to_string().into(),
|
|
||||||
table_oid: 123,
|
|
||||||
column_index: 3,
|
|
||||||
type_oid: 1043,
|
|
||||||
type_size: 32,
|
|
||||||
type_modifier: -1,
|
|
||||||
format_code: 0,
|
|
||||||
},
|
|
||||||
];
|
|
||||||
|
|
||||||
writer
|
|
||||||
.write_proto(
|
|
||||||
RowDescriptionData {
|
|
||||||
columns: columns.into(),
|
|
||||||
}
|
}
|
||||||
.into(),
|
|
||||||
)
|
|
||||||
.await?;
|
|
||||||
|
|
||||||
Ok(())
|
writer.write_command_complete(CompleteStatus::Select(sent_rows)).await?;
|
||||||
}
|
}
|
||||||
|
_ => {
|
||||||
async fn send_query_response(writer: &mut impl BackendProtoWriter) -> anyhow::Result<()> {
|
writer.write_command_complete(CompleteStatus::Select(0)).await?;
|
||||||
send_row_description(writer).await?;
|
}
|
||||||
|
}
|
||||||
write_row(writer, b"0", b"1337", b"auto").await?;
|
}
|
||||||
write_row(writer, b"1", b"69", b"bus").await?;
|
_ => {}
|
||||||
write_row(writer, b"2", b"420", b"kolo").await?;
|
|
||||||
|
|
||||||
writer
|
|
||||||
.write_proto(
|
|
||||||
CommandCompleteData {
|
|
||||||
tag: "SELECT 3".to_string().into(),
|
|
||||||
}
|
}
|
||||||
.into(),
|
|
||||||
)
|
|
||||||
.await?;
|
|
||||||
|
|
||||||
Ok(())
|
|
||||||
}
|
|
||||||
|
|
||||||
async fn write_row(
|
|
||||||
writer: &mut impl BackendProtoWriter,
|
|
||||||
first: &[u8],
|
|
||||||
second: &[u8],
|
|
||||||
third: &[u8],
|
|
||||||
) -> anyhow::Result<()> {
|
|
||||||
let row_data = vec![
|
|
||||||
first.to_vec().into(),
|
|
||||||
second.to_vec().into(),
|
|
||||||
third.to_vec().into(),
|
|
||||||
]
|
|
||||||
.into();
|
|
||||||
|
|
||||||
writer
|
|
||||||
.write_proto(DataRowData { columns: row_data }.into())
|
|
||||||
.await?;
|
|
||||||
|
|
||||||
Ok(())
|
Ok(())
|
||||||
}
|
}
|
||||||
|
|
|
||||||
104
server/src/proto_wrapper.rs
Normal file
104
server/src/proto_wrapper.rs
Normal file
|
|
@ -0,0 +1,104 @@
|
||||||
|
use async_trait::async_trait;
|
||||||
|
use minisql::restricted_row::RestrictedRow;
|
||||||
|
use minisql::schema::TableSchema;
|
||||||
|
use minisql::type_system::{Value};
|
||||||
|
use proto::message::backend::{BackendMessage, ColumnDescription, CommandCompleteData, DataRowData, ErrorResponseData, ReadyForQueryData, RowDescriptionData};
|
||||||
|
use proto::message::primitive::pglist::PgList;
|
||||||
|
use proto::writer::backend::BackendProtoWriter;
|
||||||
|
|
||||||
|
pub enum CompleteStatus {
|
||||||
|
Insert {
|
||||||
|
oid: i32,
|
||||||
|
rows: i32,
|
||||||
|
},
|
||||||
|
Delete(usize),
|
||||||
|
Select(usize),
|
||||||
|
}
|
||||||
|
|
||||||
|
impl CompleteStatus {
|
||||||
|
fn to_string(&self) -> String {
|
||||||
|
match self {
|
||||||
|
CompleteStatus::Insert { oid, rows } => format!("INSERT {} {}", oid, rows),
|
||||||
|
CompleteStatus::Delete(rows) => format!("DELETE {}", rows),
|
||||||
|
CompleteStatus::Select(rows) => format!("SELECT {}", rows),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
#[async_trait]
|
||||||
|
pub trait ServerProto {
|
||||||
|
async fn write_error_message(&mut self, error_message: &str) -> anyhow::Result<()>;
|
||||||
|
async fn write_ready_for_query(&mut self) -> anyhow::Result<()>;
|
||||||
|
async fn write_empty_query(&mut self) -> anyhow::Result<()>;
|
||||||
|
async fn write_table_header(&mut self, table_schema: &TableSchema, row: &RestrictedRow) -> anyhow::Result<()>;
|
||||||
|
async fn write_table_row(&mut self, row: &RestrictedRow) -> anyhow::Result<()>;
|
||||||
|
async fn write_command_complete(&mut self, status: CompleteStatus) -> anyhow::Result<()>;
|
||||||
|
}
|
||||||
|
|
||||||
|
#[async_trait]
|
||||||
|
impl<W> ServerProto for W where W: BackendProtoWriter + Send {
|
||||||
|
async fn write_error_message(&mut self, error_message: &str) -> anyhow::Result<()> {
|
||||||
|
self.write_proto(ErrorResponseData {
|
||||||
|
code: b'M',
|
||||||
|
message: format!("{error_message}\0").into(),
|
||||||
|
}.into()).await?;
|
||||||
|
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
|
||||||
|
async fn write_ready_for_query(&mut self) -> anyhow::Result<()> {
|
||||||
|
self.write_proto(ReadyForQueryData { status: b'I' }.into()).await?;
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
|
||||||
|
async fn write_empty_query(&mut self) -> anyhow::Result<()> {
|
||||||
|
self.write_proto(BackendMessage::EmptyQueryResponse).await?;
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
|
||||||
|
async fn write_table_header(&mut self, table_schema: &TableSchema, row: &RestrictedRow) -> anyhow::Result<()> {
|
||||||
|
let columns = row.iter()
|
||||||
|
.map(|(index, value)| value_to_column_description(table_schema, value, index))
|
||||||
|
.collect::<anyhow::Result<Vec<ColumnDescription>>>()?;
|
||||||
|
|
||||||
|
self.write_proto(RowDescriptionData { columns: columns.into() }.into()).await?;
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
|
||||||
|
async fn write_table_row(&mut self, row: &RestrictedRow) -> anyhow::Result<()> {
|
||||||
|
let values = row.iter()
|
||||||
|
.map(|(_, value)| value.as_text_bytes().into())
|
||||||
|
.collect::<Vec<PgList<u8, i32>>>();
|
||||||
|
|
||||||
|
self.write_proto(BackendMessage::DataRow(DataRowData {
|
||||||
|
columns: values.into(),
|
||||||
|
})).await?;
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
|
||||||
|
async fn write_command_complete(&mut self, status: CompleteStatus) -> anyhow::Result<()> {
|
||||||
|
self.write_proto(BackendMessage::CommandComplete(CommandCompleteData {
|
||||||
|
tag: status.to_string().into(),
|
||||||
|
})).await?;
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn value_to_column_description(schema: &TableSchema, value: &Value, index: &usize) -> anyhow::Result<ColumnDescription> {
|
||||||
|
let name = schema.column_name_from_column_position(*index)?;
|
||||||
|
|
||||||
|
let table_oid = schema.table_name().as_bytes().as_ptr() as i32;
|
||||||
|
let column_index = (*index).try_into()?;
|
||||||
|
let type_oid = value.type_oid();
|
||||||
|
let type_size = value.type_size();
|
||||||
|
|
||||||
|
Ok(ColumnDescription {
|
||||||
|
name: name.to_string().into(),
|
||||||
|
table_oid,
|
||||||
|
column_index,
|
||||||
|
type_oid,
|
||||||
|
type_size,
|
||||||
|
type_modifier: -1,
|
||||||
|
format_code: 0, // text format
|
||||||
|
})
|
||||||
|
}
|
||||||
Loading…
Add table
Add a link
Reference in a new issue