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🏫 Add Mist and Wisp examples
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-53
+1
-53
README.md
+1
-53
README.md
···
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func("🚀") // "Stop!"
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```
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-
A more practical example would be to use `glimit` to rate limit requests to a mist HTTP server:
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-
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```gleam
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import glimit
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-
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fn handle_request(req: Request(Connection)) -> Response(ResponseData) {
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let index =
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response.new(200)
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|> response.set_body(mist.Bytes(bytes_builder.new()))
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let not_found =
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response.new(404)
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|> response.set_body(mist.Bytes(bytes_builder.new()))
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case request.path_segments(req) {
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[] -> index
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_ -> not_found
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}
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}
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fn get_identifier(req: Request(Connection)) -> Result(String, String) {
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req.body
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|> get_client_info
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|> result.map(fn(client_info: ConnectionInfo) {
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client_info.ip_address |> string.inspect
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})
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|> result.unwrap("unknown IP address")
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}
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pub fn main() {
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let rate_limit_reached = fn(_req) -> {
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response.new(429)
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|> response.set_body(mist.Bytes(bytes_builder.new()))
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}
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let limiter =
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glimit.new()
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|> glimit.per_second(10)
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|> glimit.burst_limit(100)
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|> glimit.identifier(get_identifier)
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|> glimit.on_limit_exceeded(rate_limit_reached)
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|> glimit.build
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let assert Ok(_) =
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handle_request
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|> glimit.apply(limiter)
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|> mist.new
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|> mist.port(8080)
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|> mist.start_http
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process.sleep_forever()
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}
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```
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More practical examples can be found in the `examples/` directory, such as Wisp and Mist server examples.
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## Constraints
+12
examples/mist/gleam.toml
+12
examples/mist/gleam.toml
···
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name = "app"
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version = "1.0.0"
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+
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[dependencies]
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gleam_stdlib = ">= 0.34.0 and < 2.0.0"
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glimit = { path = "../.." }
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mist = ">= 2.0.0 and < 3.0.0"
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gleam_http = ">= 3.6.0 and < 4.0.0"
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gleam_erlang = ">= 0.26.0 and < 1.0.0"
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[dev-dependencies]
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gleeunit = ">= 1.0.0 and < 2.0.0"
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examples/mist/manifest.toml
+28
examples/mist/manifest.toml
···
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# This file was generated by Gleam
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# You typically do not need to edit this file
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packages = [
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{ name = "birl", version = "1.7.1", build_tools = ["gleam"], requirements = ["gleam_stdlib", "ranger"], otp_app = "birl", source = "hex", outer_checksum = "5C66647D62BCB11FE327E7A6024907C4A17954EF22865FE0940B54A852446D01" },
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{ name = "gleam_crypto", version = "1.3.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_crypto", source = "hex", outer_checksum = "ADD058DEDE8F0341F1ADE3AAC492A224F15700829D9A3A3F9ADF370F875C51B7" },
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{ name = "gleam_erlang", version = "0.26.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_erlang", source = "hex", outer_checksum = "3DF72F95F4716883FA51396FB0C550ED3D55195B541568CAF09745984FD37AD1" },
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{ name = "gleam_http", version = "3.6.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_http", source = "hex", outer_checksum = "8C07DF9DF8CC7F054C650839A51C30A7D3C26482AC241C899C1CEA86B22DBE51" },
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{ name = "gleam_otp", version = "0.12.0", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_stdlib"], otp_app = "gleam_otp", source = "hex", outer_checksum = "CD5FC777E99673BDB390092DF85E34EAA6B8EE1882147496290AB3F45A4960B1" },
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{ name = "gleam_stdlib", version = "0.40.0", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "86606B75A600BBD05E539EB59FABC6E307EEEA7B1E5865AFB6D980A93BCB2181" },
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{ name = "gleeunit", version = "1.2.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleeunit", source = "hex", outer_checksum = "F7A7228925D3EE7D0813C922E062BFD6D7E9310F0BEE585D3A42F3307E3CFD13" },
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{ name = "glimit", version = "0.2.0", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_otp", "gleam_stdlib"], source = "local", path = "../.." },
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{ name = "glisten", version = "5.0.0", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_otp", "gleam_stdlib", "logging", "telemetry"], otp_app = "glisten", source = "hex", outer_checksum = "48EF7F6D1DCA877C2F49AF35CC33946C7129EEB05A114758A2CC569C708BFAF8" },
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{ name = "gramps", version = "2.0.3", build_tools = ["gleam"], requirements = ["gleam_crypto", "gleam_erlang", "gleam_http", "gleam_stdlib"], otp_app = "gramps", source = "hex", outer_checksum = "3CCAA6E081225180D95C79679D383BBF51C8D1FDC1B84DA1DA444F628C373793" },
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{ name = "hpack_erl", version = "0.3.0", build_tools = ["rebar3"], requirements = [], otp_app = "hpack", source = "hex", outer_checksum = "D6137D7079169D8C485C6962DFE261AF5B9EF60FBC557344511C1E65E3D95FB0" },
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{ name = "logging", version = "1.3.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "logging", source = "hex", outer_checksum = "1098FBF10B54B44C2C7FDF0B01C1253CAFACDACABEFB4B0D027803246753E06D" },
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{ name = "mist", version = "2.0.0", build_tools = ["gleam"], requirements = ["birl", "gleam_erlang", "gleam_http", "gleam_otp", "gleam_stdlib", "glisten", "gramps", "hpack_erl", "logging"], otp_app = "mist", source = "hex", outer_checksum = "981F12FC8BA0656B40099EC876D6F2BEE7B95593610F342E9AB0DC4E663A932F" },
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{ name = "ranger", version = "1.2.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "ranger", source = "hex", outer_checksum = "1566C272B1D141B3BBA38B25CB761EF56E312E79EC0E2DFD4D3C19FB0CC1F98C" },
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{ name = "telemetry", version = "1.3.0", build_tools = ["rebar3"], requirements = [], otp_app = "telemetry", source = "hex", outer_checksum = "7015FC8919DBE63764F4B4B87A95B7C0996BD539E0D499BE6EC9D7F3875B79E6" },
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]
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[requirements]
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gleam_erlang = { version = ">= 0.26.0 and < 1.0.0" }
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gleam_http = { version = ">= 3.6.0 and < 4.0.0" }
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gleam_stdlib = { version = ">= 0.34.0 and < 2.0.0" }
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gleeunit = { version = ">= 1.0.0 and < 2.0.0" }
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glimit = { path = "../.." }
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mist = { version = ">= 2.0.0 and < 3.0.0" }
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examples/mist/src/app.gleam
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examples/mist/src/app.gleam
···
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import gleam/bytes_builder
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import gleam/erlang/process
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import gleam/http/request.{type Request}
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import gleam/http/response.{type Response}
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import gleam/result
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import gleam/string
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import glimit
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import mist.{
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type Connection, type ConnectionInfo, type ResponseData, get_client_info,
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}
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fn handle_request(req: Request(Connection)) -> Response(ResponseData) {
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let index =
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response.new(200)
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|> response.set_body(mist.Bytes(bytes_builder.from_string("Hello, world!")))
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let not_found =
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response.new(404)
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|> response.set_body(mist.Bytes(bytes_builder.from_string("Not found")))
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case request.path_segments(req) {
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[] -> index
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_ -> not_found
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}
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}
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fn get_ip_address(req: Request(Connection)) -> String {
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req.body
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|> get_client_info
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|> result.map(fn(client_info: ConnectionInfo) {
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client_info.ip_address |> string.inspect
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})
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|> result.unwrap("unknown IP address")
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}
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pub fn main() {
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let rate_limit_reached = fn(_req) {
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response.new(429)
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|> response.set_body(
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mist.Bytes(bytes_builder.from_string("Too many requests")),
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)
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}
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let limiter =
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glimit.new()
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|> glimit.per_second(1)
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|> glimit.burst_limit(5)
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|> glimit.identifier(get_ip_address)
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|> glimit.on_limit_exceeded(rate_limit_reached)
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|> glimit.build
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let assert Ok(_) =
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handle_request
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|> glimit.apply(limiter)
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|> mist.new
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|> mist.port(8000)
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|> mist.start_http
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process.sleep_forever()
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}
+16
examples/wisp/gleam.toml
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examples/wisp/gleam.toml
···
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name = "app"
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version = "1.0.0"
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description = "A Wisp example"
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gleam = ">= 0.32.0"
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[dependencies]
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gleam_stdlib = "~> 0.30"
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glimit = { path = "../.." }
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wisp = "~> 1.1.0"
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gleam_erlang = "~> 0.23"
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mist = ">= 2.0.0 and < 3.0.0"
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gleam_http = ">= 3.6.0 and < 4.0.0"
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[dev-dependencies]
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gleeunit = "~> 1.0"
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examples/wisp/manifest.toml
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examples/wisp/manifest.toml
···
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# This file was generated by Gleam
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# You typically do not need to edit this file
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+
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packages = [
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{ name = "birl", version = "1.7.1", build_tools = ["gleam"], requirements = ["gleam_stdlib", "ranger"], otp_app = "birl", source = "hex", outer_checksum = "5C66647D62BCB11FE327E7A6024907C4A17954EF22865FE0940B54A852446D01" },
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{ name = "directories", version = "1.1.0", build_tools = ["gleam"], requirements = ["envoy", "gleam_stdlib", "platform", "simplifile"], otp_app = "directories", source = "hex", outer_checksum = "BDA521A4EB9EE3A7894F0DC863797878E91FF5C7826F7084B2E731E208BDB076" },
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{ name = "envoy", version = "1.0.1", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "envoy", source = "hex", outer_checksum = "CFAACCCFC47654F7E8B75E614746ED924C65BD08B1DE21101548AC314A8B6A41" },
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{ name = "exception", version = "2.0.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "exception", source = "hex", outer_checksum = "F5580D584F16A20B7FCDCABF9E9BE9A2C1F6AC4F9176FA6DD0B63E3B20D450AA" },
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{ name = "filepath", version = "1.0.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "filepath", source = "hex", outer_checksum = "EFB6FF65C98B2A16378ABC3EE2B14124168C0CE5201553DE652E2644DCFDB594" },
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{ name = "gleam_crypto", version = "1.3.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_crypto", source = "hex", outer_checksum = "ADD058DEDE8F0341F1ADE3AAC492A224F15700829D9A3A3F9ADF370F875C51B7" },
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{ name = "gleam_erlang", version = "0.26.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_erlang", source = "hex", outer_checksum = "3DF72F95F4716883FA51396FB0C550ED3D55195B541568CAF09745984FD37AD1" },
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{ name = "gleam_http", version = "3.6.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_http", source = "hex", outer_checksum = "8C07DF9DF8CC7F054C650839A51C30A7D3C26482AC241C899C1CEA86B22DBE51" },
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{ name = "gleam_json", version = "1.0.1", build_tools = ["gleam"], requirements = ["gleam_stdlib", "thoas"], otp_app = "gleam_json", source = "hex", outer_checksum = "9063D14D25406326C0255BDA0021541E797D8A7A12573D849462CAFED459F6EB" },
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{ name = "gleam_otp", version = "0.12.0", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_stdlib"], otp_app = "gleam_otp", source = "hex", outer_checksum = "CD5FC777E99673BDB390092DF85E34EAA6B8EE1882147496290AB3F45A4960B1" },
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{ name = "gleam_stdlib", version = "0.40.0", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "86606B75A600BBD05E539EB59FABC6E307EEEA7B1E5865AFB6D980A93BCB2181" },
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{ name = "gleeunit", version = "1.2.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleeunit", source = "hex", outer_checksum = "F7A7228925D3EE7D0813C922E062BFD6D7E9310F0BEE585D3A42F3307E3CFD13" },
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{ name = "glimit", version = "0.2.0", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_otp", "gleam_stdlib"], source = "local", path = "../.." },
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{ name = "glisten", version = "5.0.0", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_otp", "gleam_stdlib", "logging", "telemetry"], otp_app = "glisten", source = "hex", outer_checksum = "48EF7F6D1DCA877C2F49AF35CC33946C7129EEB05A114758A2CC569C708BFAF8" },
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{ name = "gramps", version = "2.0.3", build_tools = ["gleam"], requirements = ["gleam_crypto", "gleam_erlang", "gleam_http", "gleam_stdlib"], otp_app = "gramps", source = "hex", outer_checksum = "3CCAA6E081225180D95C79679D383BBF51C8D1FDC1B84DA1DA444F628C373793" },
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{ name = "hpack_erl", version = "0.3.0", build_tools = ["rebar3"], requirements = [], otp_app = "hpack", source = "hex", outer_checksum = "D6137D7079169D8C485C6962DFE261AF5B9EF60FBC557344511C1E65E3D95FB0" },
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{ name = "logging", version = "1.3.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "logging", source = "hex", outer_checksum = "1098FBF10B54B44C2C7FDF0B01C1253CAFACDACABEFB4B0D027803246753E06D" },
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{ name = "marceau", version = "1.2.0", build_tools = ["gleam"], requirements = [], otp_app = "marceau", source = "hex", outer_checksum = "5188D643C181EE350D8A20A3BDBD63AF7B6C505DE333CFBE05EF642ADD88A59B" },
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{ name = "mist", version = "2.0.0", build_tools = ["gleam"], requirements = ["birl", "gleam_erlang", "gleam_http", "gleam_otp", "gleam_stdlib", "glisten", "gramps", "hpack_erl", "logging"], otp_app = "mist", source = "hex", outer_checksum = "981F12FC8BA0656B40099EC876D6F2BEE7B95593610F342E9AB0DC4E663A932F" },
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{ name = "platform", version = "1.0.0", build_tools = ["gleam"], requirements = [], otp_app = "platform", source = "hex", outer_checksum = "8339420A95AD89AAC0F82F4C3DB8DD401041742D6C3F46132A8739F6AEB75391" },
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{ name = "ranger", version = "1.2.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "ranger", source = "hex", outer_checksum = "1566C272B1D141B3BBA38B25CB761EF56E312E79EC0E2DFD4D3C19FB0CC1F98C" },
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{ name = "simplifile", version = "2.1.0", build_tools = ["gleam"], requirements = ["filepath", "gleam_stdlib"], otp_app = "simplifile", source = "hex", outer_checksum = "BDD04F5D31D6D34E2EDFAEF0B68A6297AEC939888C3BFCE61133DE13857F6DA2" },
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{ name = "telemetry", version = "1.3.0", build_tools = ["rebar3"], requirements = [], otp_app = "telemetry", source = "hex", outer_checksum = "7015FC8919DBE63764F4B4B87A95B7C0996BD539E0D499BE6EC9D7F3875B79E6" },
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{ name = "thoas", version = "1.2.1", build_tools = ["rebar3"], requirements = [], otp_app = "thoas", source = "hex", outer_checksum = "E38697EDFFD6E91BD12CEA41B155115282630075C2A727E7A6B2947F5408B86A" },
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{ name = "wisp", version = "1.1.0", build_tools = ["gleam"], requirements = ["directories", "exception", "gleam_crypto", "gleam_erlang", "gleam_http", "gleam_json", "gleam_stdlib", "logging", "marceau", "mist", "simplifile"], otp_app = "wisp", source = "hex", outer_checksum = "5B25E37E08A94039668D2ACF7B2D2A665BEAF4B48EFA8613010B4E3164137664" },
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]
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+
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[requirements]
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gleam_erlang = { version = "~> 0.23" }
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gleam_http = { version = ">= 3.6.0 and < 4.0.0" }
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gleam_stdlib = { version = "~> 0.30" }
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gleeunit = { version = "~> 1.0" }
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glimit = { path = "../.." }
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mist = { version = ">= 2.0.0 and < 3.0.0" }
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wisp = { version = "~> 1.1.0" }
+44
examples/wisp/src/app.gleam
+44
examples/wisp/src/app.gleam
···
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+
import app/router
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import gleam/erlang/process
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import gleam/http/request
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import gleam/result
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import gleam/string_builder
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import glimit
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import mist
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import wisp.{type Request}
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import wisp/wisp_mist
10
+
11
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pub fn main() {
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// Setup a rate limiter.
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let limiter =
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glimit.new()
15
+
|> glimit.per_second(1)
16
+
|> glimit.burst_limit(5)
17
+
|> glimit.identifier(fn(req: Request) {
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req
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|> request.get_header("X-Forwarded-For")
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|> result.unwrap("anonymous")
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+
})
22
+
|> glimit.on_limit_exceeded(fn(_) {
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let body = string_builder.from_string("<h1>Too many requests</h1>")
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wisp.html_response(body, 429)
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+
})
26
+
|> glimit.build
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+
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wisp.configure_logger()
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+
30
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let secret_key_base = wisp.random_string(64)
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+
32
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// Start the Mist web server.
33
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let assert Ok(_) =
34
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wisp_mist.handler(
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router.handle_request
36
+
|> glimit.apply(limiter),
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+
secret_key_base,
38
+
)
39
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|> mist.new
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|> mist.port(8000)
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|> mist.start_http
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+
43
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process.sleep_forever()
44
+
}
+9
examples/wisp/src/app/router.gleam
+9
examples/wisp/src/app/router.gleam
···
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+
import gleam/string_builder
2
+
import wisp.{type Request, type Response}
3
+
4
+
/// The HTTP request handler- your application!
5
+
///
6
+
pub fn handle_request(_req: Request) -> Response {
7
+
let body = string_builder.from_string("<h1>👋 Hi!</h1>")
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+
wisp.html_response(body, 200)
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+
}