Refactor error handling

Cargo.lock

@@ -216,6 +216,12 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "anyhow"
+version = "1.0.53"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "94a45b455c14666b85fc40a019e8ab9eb75e3a124e05494f5397122bc9eb06e0"
+
 [[package]]
 name = "autocfg"
 version = "1.0.1"
@@ -325,6 +331,7 @@ version = "0.1.0"
 dependencies = [
  "actix-http",
  "actix-web",
+ "anyhow",
  "chrono",
  "configparser",
  "contextswitch-types",
@@ -337,6 +344,7 @@ dependencies = [
  "rstest",
  "serde",
  "serde_json",
+ "thiserror",
  "tokio",
  "tracing",
  "tracing-actix-web",
@@ -1406,6 +1414,26 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "thiserror"
+version = "1.0.30"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "854babe52e4df1653706b98fcfc05843010039b406875930a70e4d9644e5c417"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "1.0.30"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa32fd3f627f367fe16f893e2597ae3c05020f8bba2666a4e6ea73d377e5714b"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "thread_local"
 version = "1.1.3"