✨ cron
This commit is contained in:
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8 changed files with 575 additions and 6 deletions
169
Cargo.lock
generated
169
Cargo.lock
generated
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@ -26,6 +26,21 @@ dependencies = [
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"memchr",
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]
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[[package]]
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name = "android-tzdata"
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version = "0.1.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e999941b234f3131b00bc13c22d06e8c5ff726d1b6318ac7eb276997bbb4fef0"
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[[package]]
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name = "android_system_properties"
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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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checksum = "819e7219dbd41043ac279b19830f2efc897156490d7fd6ea916720117ee66311"
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dependencies = [
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"libc",
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]
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[[package]]
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name = "anstream"
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version = "0.6.18"
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@ -109,6 +124,12 @@ version = "2.9.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5c8214115b7bf84099f1309324e63141d4c5d7cc26862f97a0a857dbefe165bd"
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[[package]]
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name = "bumpalo"
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version = "3.17.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "1628fb46dfa0b37568d12e5edd512553eccf6a22a78e8bde00bb4aed84d5bdbf"
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[[package]]
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name = "byteorder"
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version = "1.5.0"
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@ -121,12 +142,35 @@ version = "1.10.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d71b6127be86fdcfddb610f7182ac57211d4b18a3e9c82eb2d17662f2227ad6a"
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[[package]]
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name = "cc"
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version = "1.2.16"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "be714c154be609ec7f5dad223a33bf1482fff90472de28f7362806e6d4832b8c"
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dependencies = [
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"shlex",
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]
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[[package]]
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name = "cfg-if"
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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 = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
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[[package]]
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name = "chrono"
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version = "0.4.40"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "1a7964611d71df112cb1730f2ee67324fcf4d0fc6606acbbe9bfe06df124637c"
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dependencies = [
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"android-tzdata",
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"iana-time-zone",
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"js-sys",
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"num-traits",
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"wasm-bindgen",
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"windows-link",
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]
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[[package]]
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name = "colorchoice"
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version = "1.0.3"
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@ -147,6 +191,7 @@ dependencies = [
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name = "comrade"
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version = "0.1.0"
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dependencies = [
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"chrono",
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"comrade-macro",
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"crossbeam",
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"dashmap",
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@ -172,6 +217,12 @@ dependencies = [
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"syn",
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]
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[[package]]
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name = "core-foundation-sys"
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version = "0.8.7"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "773648b94d0e5d620f64f280777445740e61fe701025087ec8b57f45c791888b"
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[[package]]
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name = "crossbeam"
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version = "0.8.4"
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@ -315,6 +366,29 @@ version = "2.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
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[[package]]
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name = "iana-time-zone"
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version = "0.1.61"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "235e081f3925a06703c2d0117ea8b91f042756fd6e7a6e5d901e8ca1a996b220"
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dependencies = [
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"android_system_properties",
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"core-foundation-sys",
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"iana-time-zone-haiku",
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"js-sys",
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"wasm-bindgen",
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"windows-core",
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]
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[[package]]
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name = "iana-time-zone-haiku"
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version = "0.1.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "f31827a206f56af32e590ba56d5d2d085f558508192593743f16b2306495269f"
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dependencies = [
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"cc",
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]
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[[package]]
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name = "icu_collections"
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version = "1.5.0"
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@ -466,6 +540,16 @@ version = "1.0.15"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "4a5f13b858c8d314ee3e8f639011f7ccefe71f97f96e50151fb991f267928e2c"
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[[package]]
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name = "js-sys"
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version = "0.3.77"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "1cfaf33c695fc6e08064efbc1f72ec937429614f25eef83af942d0e227c3a28f"
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dependencies = [
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"once_cell",
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"wasm-bindgen",
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]
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[[package]]
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name = "libc"
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version = "0.2.170"
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@ -695,6 +779,12 @@ version = "0.1.24"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "719b953e2095829ee67db738b3bfa9fa368c94900df327b3f07fe6e794d2fe1f"
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[[package]]
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name = "rustversion"
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version = "1.0.20"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "eded382c5f5f786b989652c49544c4877d9f015cc22e145a5ea8ea66c2921cd2"
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[[package]]
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name = "ryu"
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version = "1.0.20"
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@ -745,6 +835,12 @@ version = "1.0.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "bbfa15b3dddfee50a0fff136974b3e1bde555604ba463834a7eb7deb6417705d"
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[[package]]
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name = "shlex"
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version = "1.3.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
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[[package]]
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name = "smallvec"
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version = "1.14.0"
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@ -862,6 +958,79 @@ dependencies = [
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"wit-bindgen-rt",
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]
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[[package]]
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name = "wasm-bindgen"
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version = "0.2.100"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "1edc8929d7499fc4e8f0be2262a241556cfc54a0bea223790e71446f2aab1ef5"
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dependencies = [
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"cfg-if",
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"once_cell",
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"rustversion",
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"wasm-bindgen-macro",
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]
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[[package]]
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name = "wasm-bindgen-backend"
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version = "0.2.100"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "2f0a0651a5c2bc21487bde11ee802ccaf4c51935d0d3d42a6101f98161700bc6"
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dependencies = [
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"bumpalo",
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"log",
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"proc-macro2",
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"quote",
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"syn",
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"wasm-bindgen-shared",
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]
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[[package]]
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name = "wasm-bindgen-macro"
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version = "0.2.100"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7fe63fc6d09ed3792bd0897b314f53de8e16568c2b3f7982f468c0bf9bd0b407"
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dependencies = [
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"quote",
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"wasm-bindgen-macro-support",
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]
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[[package]]
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name = "wasm-bindgen-macro-support"
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version = "0.2.100"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8ae87ea40c9f689fc23f209965b6fb8a99ad69aeeb0231408be24920604395de"
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dependencies = [
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"proc-macro2",
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"quote",
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"syn",
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"wasm-bindgen-backend",
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"wasm-bindgen-shared",
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]
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[[package]]
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name = "wasm-bindgen-shared"
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version = "0.2.100"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "1a05d73b933a847d6cccdda8f838a22ff101ad9bf93e33684f39c1f5f0eece3d"
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dependencies = [
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"unicode-ident",
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]
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[[package]]
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name = "windows-core"
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version = "0.52.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "33ab640c8d7e35bf8ba19b884ba838ceb4fba93a4e8c65a9059d08afcfc683d9"
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dependencies = [
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"windows-targets",
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]
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[[package]]
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name = "windows-link"
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version = "0.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "6dccfd733ce2b1753b03b6d3c65edf020262ea35e20ccdf3e288043e6dd620e3"
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[[package]]
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name = "windows-sys"
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version = "0.52.0"
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@ -16,3 +16,4 @@ rand = "0.9.0"
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redis = "0.29.1"
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serde = "1.0.218"
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uuid = { version = "1.15.1", features = ["v4"] }
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chrono = "0.4.40"
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55
README.md
55
README.md
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@ -28,7 +28,7 @@ let res: (i32, i32) = rally(items, |item: &i32| {
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});
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// Run background tasks without blocking the main thread
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background(|| {
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background!(|| {
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// Background task logic
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println!("This is a background task!");
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});
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@ -52,6 +52,11 @@ let value: &str = retry(|| {
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None
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}
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})
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// Delayed execution
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delay(Duration::from_secs(4), || {
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println!("I will run in 4 seconds from now on!");
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});
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```
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### Service Management
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@ -74,6 +79,54 @@ fn run_services() {
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}
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```
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#### Cron Tasks
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The ServiceManager also supports running functions periodically or on time:
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```rust
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fn main() {
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let s = ServiceManager::new();
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// Init Cron Manager
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let cron = Cron::new();
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// Add Cron Task
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cron.add_task("4_sec", Schedule::Every(Duration::from_secs(4)), || {
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println!("I run every 4 at {}", chrono::Utc::now());
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});
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cron.add_task("2_sec", Schedule::Every(Duration::from_secs(2)), || {
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println!("I run every 2 seconds at {}", chrono::Utc::now());
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});
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cron.add_task(
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"daily",
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Schedule::Every(Duration::from_secs(60 * 60 * 24)),
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|| {
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println!("I run daily");
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},
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);
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// Start running the Cron Manager
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let (s, cron) = s.register_cron(cron.into());
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let s = s.spawn();
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defer!(|| {
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s.join().unwrap();
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});
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// Add another Cron Task after running the manager dynamically
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cron.add_task(
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"future_task",
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Schedule::At(datetime_in(Duration::from_secs(2))),
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|| {
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println!("I am in the future");
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},
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);
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// Functionally the same as above
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cron.run_at(datetime_in(Duration::from_secs(3)), || {
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println!("The Future");
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});
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}
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```
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### Worker Unions
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You can annotate a function with `#[worker]` which gives them superpowers. These functions can be queued and dispatched by the system, and their results are returned when completed.
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59
examples/cron.rs
Normal file
59
examples/cron.rs
Normal file
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@ -0,0 +1,59 @@
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use comrade::{
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cron::{Cron, Schedule},
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datetime_in, defer, delay,
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service::ServiceManager,
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};
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use std::time::Duration;
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fn main() {
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env_logger::init();
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let s = ServiceManager::new();
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// Init Cron Manager
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let cron = Cron::new();
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// Add Cron Task
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cron.add_task("4_sec", Schedule::Every(Duration::from_secs(4)), || {
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println!("I run every 4 at {}", chrono::Utc::now());
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});
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cron.add_task("2_sec", Schedule::Every(Duration::from_secs(2)), || {
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println!("I run every 2 seconds at {}", chrono::Utc::now());
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});
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cron.add_task(
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"daily",
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Schedule::Every(Duration::from_secs(60 * 60 * 24)),
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|| {
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println!("I run daily");
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},
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);
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|
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// Start running the Cron Manager
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let (s, cron) = s.register_cron(cron.into());
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let s = s.spawn();
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defer!(|| {
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s.join().unwrap();
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});
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|
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// Add another Cron Task after running the manager dynamically
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cron.add_task(
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"future_task",
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Schedule::At(datetime_in(Duration::from_secs(2))),
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|| {
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println!("I am in the future");
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},
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);
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|
||||
// Functionally the same as above
|
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cron.run_at(datetime_in(Duration::from_secs(3)), || {
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println!("The Future");
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});
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// ---
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|
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// Delayed execution
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delay(Duration::from_secs(4), || {
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println!("I will run in 4 seconds from now on!");
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});
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}
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195
src/cron.rs
Normal file
195
src/cron.rs
Normal file
|
|
@ -0,0 +1,195 @@
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use std::{
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sync::{Arc, RwLock},
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thread::JoinHandle,
|
||||
time::Duration,
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u64,
|
||||
};
|
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use chrono::Utc;
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use rand::Rng;
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||||
pub enum Schedule {
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Every(Duration),
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At(chrono::DateTime<Utc>),
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}
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pub struct CronTask {
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f: Arc<Box<dyn Fn() + Send + Sync + 'static>>,
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schedule: Schedule,
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name: String,
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last_run: Option<chrono::DateTime<Utc>>,
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}
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impl CronTask {
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pub fn new<F: Fn() + Send + Sync + 'static>(name: &str, schedule: Schedule, f: F) -> Self {
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Self {
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f: Arc::new(Box::new(f)),
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schedule,
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||||
name: name.to_string(),
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last_run: None,
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||||
}
|
||||
}
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||||
|
||||
pub fn is_absolute(&self) -> bool {
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||||
match self.schedule {
|
||||
Schedule::Every(_) => false,
|
||||
Schedule::At(_) => true,
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||||
}
|
||||
}
|
||||
|
||||
pub fn run(&mut self) -> JoinHandle<()> {
|
||||
log::info!("Starting cron task '{}'", self.name);
|
||||
self.last_run = Some(Utc::now());
|
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let f = Arc::clone(&self.f);
|
||||
std::thread::spawn(move || {
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||||
f.as_ref()();
|
||||
})
|
||||
}
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||||
|
||||
pub fn wait_until(&mut self) -> Duration {
|
||||
match self.schedule {
|
||||
Schedule::Every(duration) => {
|
||||
let now = Utc::now();
|
||||
if let Some(last_exec) = self.last_run {
|
||||
let since_then = (now - last_exec).to_std().unwrap();
|
||||
|
||||
duration.checked_sub(since_then).unwrap_or(Duration::ZERO)
|
||||
} else {
|
||||
self.last_run = Some(Utc::now());
|
||||
duration
|
||||
}
|
||||
}
|
||||
Schedule::At(date_time) => {
|
||||
if self.last_run.is_none() {
|
||||
let now = Utc::now();
|
||||
if let Ok(dur) = date_time.signed_duration_since(&now).to_std() {
|
||||
dur
|
||||
} else {
|
||||
Duration::ZERO
|
||||
}
|
||||
} else {
|
||||
Duration::from_secs(u64::MAX)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
pub struct Cron {
|
||||
tasks: RwLock<Vec<CronTask>>,
|
||||
}
|
||||
|
||||
impl Cron {
|
||||
pub fn new() -> Self {
|
||||
Self {
|
||||
tasks: RwLock::new(Vec::new()),
|
||||
}
|
||||
}
|
||||
|
||||
pub fn add_task<F: Fn() + Send + Sync + 'static>(&self, name: &str, schedule: Schedule, f: F) {
|
||||
self.tasks
|
||||
.write()
|
||||
.unwrap()
|
||||
.push(CronTask::new(name, schedule, f));
|
||||
}
|
||||
|
||||
pub fn run_at<F: Fn() + Send + Sync + 'static>(&self, dt: chrono::DateTime<chrono::Utc>, f: F) {
|
||||
let name = format!("delayed_{}", rand::rng().random_range(1000..9999));
|
||||
self.tasks
|
||||
.write()
|
||||
.unwrap()
|
||||
.push(CronTask::new(&name, Schedule::At(dt), f));
|
||||
}
|
||||
|
||||
pub fn run(&self) {
|
||||
loop {
|
||||
// init
|
||||
let mut last_wait = Duration::from_secs(u64::MAX);
|
||||
let mut last_task: Option<usize> = None;
|
||||
|
||||
{
|
||||
// find next task
|
||||
let mut tasks = self.tasks.write().unwrap();
|
||||
for (i, task) in tasks.iter_mut().enumerate() {
|
||||
let wait_time = task.wait_until();
|
||||
if wait_time < last_wait {
|
||||
last_wait = wait_time;
|
||||
last_task = Some(i);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if let Some(index) = last_task {
|
||||
// init
|
||||
let mut remove = false;
|
||||
let mut skip = false;
|
||||
|
||||
// limit longest blocking time (5s)
|
||||
let real_wait = if last_wait.gt(&Duration::from_secs(5)) {
|
||||
skip = true;
|
||||
Duration::from_secs(5)
|
||||
} else {
|
||||
last_wait
|
||||
};
|
||||
|
||||
{
|
||||
// logging
|
||||
let tasks = self.tasks.read().unwrap();
|
||||
log::debug!("Managing {} cron task(s)", tasks.len());
|
||||
|
||||
let task = tasks.get(index).unwrap();
|
||||
if real_wait == last_wait {
|
||||
log::debug!(
|
||||
"Waiting for {real_wait:?} to start cron task '{}'",
|
||||
task.name
|
||||
);
|
||||
} else {
|
||||
log::debug!(
|
||||
"Would wait for {last_wait:?} to start cron task '{}'. Waiting for {real_wait:?}",
|
||||
task.name
|
||||
);
|
||||
}
|
||||
|
||||
// if somehow we wait indefinitely
|
||||
if last_wait == Duration::from_secs(u64::MAX) {
|
||||
log::warn!("Infinite wait time for cron");
|
||||
continue;
|
||||
}
|
||||
|
||||
// set remove flag for absolute time cron tasks
|
||||
if task.is_absolute() {
|
||||
log::info!(
|
||||
"Removing task '{}' from cron because it will never run again",
|
||||
task.name
|
||||
);
|
||||
remove = true;
|
||||
}
|
||||
}
|
||||
|
||||
// sleep until task
|
||||
std::thread::sleep(real_wait);
|
||||
|
||||
// skip if we are still just sleeping
|
||||
if skip {
|
||||
continue;
|
||||
}
|
||||
|
||||
{
|
||||
// run cron task
|
||||
let mut tasks = self.tasks.write().unwrap();
|
||||
let task = tasks.get_mut(index).unwrap();
|
||||
let _ = task.run();
|
||||
}
|
||||
|
||||
if remove {
|
||||
{
|
||||
// remove if requested
|
||||
let mut tasks = self.tasks.write().unwrap();
|
||||
log::info!("Removing cron task #{index}");
|
||||
tasks.remove(index);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
14
src/defer.rs
14
src/defer.rs
|
|
@ -1,16 +1,22 @@
|
|||
use std::mem::take;
|
||||
|
||||
pub struct Defer {
|
||||
f: Box<dyn Fn()>,
|
||||
f: Option<Box<dyn FnOnce()>>,
|
||||
}
|
||||
|
||||
impl Defer {
|
||||
pub fn new<F: Fn() + 'static>(f: F) -> Self {
|
||||
Self { f: Box::new(f) }
|
||||
pub fn new<F: FnOnce() + 'static>(f: F) -> Self {
|
||||
Self {
|
||||
f: Some(Box::new(f)),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Drop for Defer {
|
||||
fn drop(&mut self) {
|
||||
log::debug!("Calling defer function");
|
||||
self.f.as_ref()();
|
||||
if let Some(f) = take(&mut self.f) {
|
||||
f();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
76
src/lib.rs
76
src/lib.rs
|
|
@ -1,5 +1,11 @@
|
|||
use std::{sync::mpsc, thread, time::Instant};
|
||||
#![feature(fn_traits)]
|
||||
use std::{
|
||||
sync::mpsc,
|
||||
thread,
|
||||
time::{Duration, Instant},
|
||||
};
|
||||
|
||||
pub mod cron;
|
||||
mod defer;
|
||||
pub mod iterated;
|
||||
pub mod job;
|
||||
|
|
@ -69,3 +75,71 @@ pub fn retry<O, F: Fn() -> Option<O>>(f: F) -> O {
|
|||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// Run a background task.
|
||||
///
|
||||
/// This spawns a seperate thread for a background process.
|
||||
/// The background task is guaranteed to finish within its defined scope.
|
||||
/// If the end of the scope is reached while the thread is still running it will block.
|
||||
///
|
||||
/// # Example
|
||||
/// ```ignore
|
||||
/// use comrade::background;
|
||||
///
|
||||
/// fn do_work() {
|
||||
/// println!("doing work...");
|
||||
///
|
||||
/// // spawn background thread
|
||||
/// background!(|| {
|
||||
/// println!("doing something in the background");
|
||||
/// std::thread::sleep(std::time::Duration::from_secs(3));
|
||||
/// });
|
||||
///
|
||||
/// println!("doing something else...");
|
||||
///
|
||||
/// // end of scope
|
||||
/// // the code will block until all background processes defined here are done.
|
||||
/// }
|
||||
///
|
||||
/// fn main() {
|
||||
/// do_work();
|
||||
/// println!("finished with work");
|
||||
/// }
|
||||
/// ```
|
||||
#[macro_export]
|
||||
macro_rules! background {
|
||||
($f:expr) => {
|
||||
let handle = std::thread::spawn(move || $f());
|
||||
comrade::defer!(|| {
|
||||
handle.join().unwrap();
|
||||
});
|
||||
};
|
||||
}
|
||||
|
||||
/// Start running a function after `duration`.
|
||||
pub fn delay<F: Fn() + Send + 'static>(duration: std::time::Duration, f: F) {
|
||||
let _ = std::thread::spawn(move || {
|
||||
log::info!("Will start running in {duration:?}");
|
||||
std::thread::sleep(duration);
|
||||
f();
|
||||
});
|
||||
}
|
||||
|
||||
/// Run `f(&T) -> X` for every item in `items`
|
||||
pub fn parallel<T: Send + Sync + 'static, F, X: Send + 'static>(items: Vec<T>, f: F) -> Vec<X>
|
||||
where
|
||||
F: Fn(&T) -> X + Send + Sync + Copy + 'static,
|
||||
{
|
||||
let threads: Vec<_> = items
|
||||
.into_iter()
|
||||
.map(|x| std::thread::spawn(move || f(&x)))
|
||||
.collect();
|
||||
|
||||
threads.into_iter().map(|x| x.join().unwrap()).collect()
|
||||
}
|
||||
|
||||
pub fn datetime_in(d: Duration) -> chrono::DateTime<chrono::Utc> {
|
||||
chrono::Utc::now()
|
||||
.checked_add_signed(chrono::TimeDelta::from_std(d).unwrap())
|
||||
.unwrap()
|
||||
}
|
||||
|
|
|
|||
|
|
@ -8,6 +8,8 @@ use std::{
|
|||
time::Duration,
|
||||
};
|
||||
|
||||
use crate::cron::Cron;
|
||||
|
||||
/// Status receiver of a dead man switch
|
||||
pub struct DeadManReceiver {
|
||||
rx: Receiver<bool>,
|
||||
|
|
@ -83,6 +85,16 @@ impl ServiceManager {
|
|||
self
|
||||
}
|
||||
|
||||
pub fn register_cron(self, cron: Arc<Cron>) -> (Self, Arc<Cron>) {
|
||||
let cron_ret = Arc::clone(&cron);
|
||||
(
|
||||
self.register("cron", move |_| {
|
||||
cron.run();
|
||||
}),
|
||||
cron_ret,
|
||||
)
|
||||
}
|
||||
|
||||
/// Register a new background service
|
||||
pub fn register<T: Fn(DeadManSwitch) -> () + 'static + Send + Sync>(
|
||||
mut self,
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue