From e3946c812900bf3133c5c3f7e09f38f9c882cf57 Mon Sep 17 00:00:00 2001 From: Lyle Mantooth Date: Sat, 13 May 2023 16:24:05 -0400 Subject: [PATCH] Error handling. --- Cargo.lock | 163 ++++++++++++++++++++++++++++++++++++++++++++++++++++ Cargo.toml | 1 + src/main.rs | 26 ++++++--- 3 files changed, 181 insertions(+), 9 deletions(-) diff --git a/Cargo.lock b/Cargo.lock index bf5ee17..1065223 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -2,12 +2,42 @@ # It is not intended for manual editing. version = 3 +[[package]] +name = "addr2line" +version = "0.19.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "a76fd60b23679b7d19bd066031410fb7e458ccc5e958eb5c325888ce4baedc97" +dependencies = [ + "gimli", +] + +[[package]] +name = "adler" +version = "1.0.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe" + [[package]] name = "autocfg" version = "1.1.0" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa" +[[package]] +name = "backtrace" +version = "0.3.67" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "233d376d6d185f2a3093e58f283f60f880315b6c60075b01f36b3b85154564ca" +dependencies = [ + "addr2line", + "cc", + "cfg-if", + "libc", + "miniz_oxide", + "object", + "rustc-demangle", +] + [[package]] name = "base64" version = "0.21.0" @@ -36,6 +66,7 @@ checksum = "89b2fd2a0dcf38d7971e2194b6b6eebab45ae01067456a7fd93d5547a61b70be" name = "catscii" version = "0.1.0" dependencies = [ + "color-eyre", "reqwest", "serde", "tokio", @@ -53,6 +84,33 @@ version = "1.0.0" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd" +[[package]] +name = "color-eyre" +version = "0.6.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "5a667583cca8c4f8436db8de46ea8233c42a7d9ae424a82d338f2e4675229204" +dependencies = [ + "backtrace", + "color-spantrace", + "eyre", + "indenter", + "once_cell", + "owo-colors", + "tracing-error", +] + +[[package]] +name = "color-spantrace" +version = "0.2.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "1ba75b3d9449ecdccb27ecbc479fdc0b87fa2dd43d2f8298f9bf0e59aacc8dce" +dependencies = [ + "once_cell", + "owo-colors", + "tracing-core", + "tracing-error", +] + [[package]] name = "core-foundation" version = "0.9.3" @@ -99,6 +157,16 @@ dependencies = [ "libc", ] +[[package]] +name = "eyre" +version = "0.6.8" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "4c2b6b5a29c02cdc822728b7d7b8ae1bab3e3b05d44522770ddd49722eeac7eb" +dependencies = [ + "indenter", + "once_cell", +] + [[package]] name = "fastrand" version = "1.9.0" @@ -177,6 +245,12 @@ dependencies = [ "pin-utils", ] +[[package]] +name = "gimli" +version = "0.27.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "ad0a93d233ebf96623465aad4046a8d3aa4da22d4f4beba5388838c8a434bbb4" + [[package]] name = "h2" version = "0.3.19" @@ -298,6 +372,12 @@ dependencies = [ "unicode-normalization", ] +[[package]] +name = "indenter" +version = "0.3.3" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "ce23b50ad8242c51a442f3ff322d56b02f08852c77e4c0b4d3fd684abc89c683" + [[package]] name = "indexmap" version = "1.9.3" @@ -386,12 +466,27 @@ dependencies = [ "cfg-if", ] +[[package]] +name = "memchr" +version = "2.5.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d" + [[package]] name = "mime" version = "0.3.17" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "6877bb514081ee2a7ff5ef9de3281f14a4dd4bceac4c09388074a6b5df8a139a" +[[package]] +name = "miniz_oxide" +version = "0.6.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "b275950c28b37e794e8c55d88aeb5e139d0ce23fdbbeda68f8d7174abdf9e8fa" +dependencies = [ + "adler", +] + [[package]] name = "mio" version = "0.8.6" @@ -432,6 +527,15 @@ dependencies = [ "libc", ] +[[package]] +name = "object" +version = "0.30.3" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "ea86265d3d3dcb6a27fc51bd29a4bf387fae9d2986b823079d4986af253eb439" +dependencies = [ + "memchr", +] + [[package]] name = "once_cell" version = "1.17.1" @@ -482,6 +586,12 @@ dependencies = [ "vcpkg", ] +[[package]] +name = "owo-colors" +version = "3.5.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "c1b04fb49957986fdce4d6ee7a65027d55d4b6d2265e5848bbb507b58ccfdb6f" + [[package]] name = "parking_lot" version = "0.12.1" @@ -602,6 +712,12 @@ dependencies = [ "winreg", ] +[[package]] +name = "rustc-demangle" +version = "0.1.23" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "d626bb9dae77e28219937af045c257c28bfd3f69333c512553507f5f9798cb76" + [[package]] name = "rustix" version = "0.37.19" @@ -703,6 +819,15 @@ dependencies = [ "serde", ] +[[package]] +name = "sharded-slab" +version = "0.1.4" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "900fba806f70c630b0a382d0d825e17a0f19fcd059a2ade1ff237bcddf446b31" +dependencies = [ + "lazy_static", +] + [[package]] name = "signal-hook-registry" version = "1.4.1" @@ -761,6 +886,16 @@ dependencies = [ "windows-sys 0.45.0", ] +[[package]] +name = "thread_local" +version = "1.1.7" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "3fdd6f064ccff2d6567adcb3873ca630700f00b5ad3f060c25b5dcfd9a4ce152" +dependencies = [ + "cfg-if", + "once_cell", +] + [[package]] name = "tinyvec" version = "1.6.0" @@ -854,6 +989,28 @@ source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "0955b8137a1df6f1a2e9a37d8a6656291ff0297c1a97c24e0d8425fe2312f79a" dependencies = [ "once_cell", + "valuable", +] + +[[package]] +name = "tracing-error" +version = "0.2.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "d686ec1c0f384b1277f097b2f279a2ecc11afe8c133c1aabf036a27cb4cd206e" +dependencies = [ + "tracing", + "tracing-subscriber", +] + +[[package]] +name = "tracing-subscriber" +version = "0.3.17" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "30a651bc37f915e81f087d86e62a18eec5f79550c7faff886f7090b4ea757c77" +dependencies = [ + "sharded-slab", + "thread_local", + "tracing-core", ] [[package]] @@ -894,6 +1051,12 @@ dependencies = [ "percent-encoding", ] +[[package]] +name = "valuable" +version = "0.1.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "830b7e5d4d90034032940e4ace0d9a9a057e7a45cd94e6c007832e39edb82f6d" + [[package]] name = "vcpkg" version = "0.2.15" diff --git a/Cargo.toml b/Cargo.toml index 40fe825..018e506 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -5,6 +5,7 @@ authors = ["Amos Wenger "] edition = "2018" [dependencies] +color-eyre = "0.6" reqwest = { version = "0.11", features = ["json"] } serde = { version = "1", features = ["derive"] } tokio = { version = "1", features = ["full"] } diff --git a/src/main.rs b/src/main.rs index e89d007..de4c11f 100644 --- a/src/main.rs +++ b/src/main.rs @@ -2,11 +2,18 @@ use serde::Deserialize; #[tokio::main] async fn main() { - let res = reqwest::get("https://api.thecatapi.com/v1/images/search") - .await - .unwrap(); + let url = get_cat_image_url().await.unwrap(); + println!("The image is at {}", url); +} + +async fn get_cat_image_url() -> color_eyre::Result { + let api_url = "https://api.thecatapi.com/v1/images/search"; + let res = reqwest::get(api_url).await?; if !res.status().is_success() { - panic!("Request failed with HTTP {}", res.status()); + return Err(color_eyre::eyre::eyre!( + "The Cat API returned HTTP {}", + res.status() + )); } #[derive(Deserialize)] @@ -14,9 +21,10 @@ async fn main() { url: String, } - let images: Vec = res.json().await.unwrap(); - let image = images - .first() - .expect("the cat API should return at least one image"); - println!("The image is at {}", image.url); + let mut images: Vec = res.json().await?; + if let Some(image) = images.pop() { + Ok(image.url) + } else { + Err(color_eyre::eyre::eyre!("The Cat API returned no images")) + } }