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Remove examples from the repository

Browse source 
They have moved into their own repo.
This commit is contained in:
Jonas Platte 2024-09-09 22:45:09 +02:00
parent 9e418105ff
commit b1632fd07c
11 changed files with 2 additions and 516 deletions
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2
Cargo.toml
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[workspace] [workspace]
members = ["crates/*", "examples/*", "xtask"] members = ["crates/*", "xtask"]
# Only compile / check / document the public crates by default # Only compile / check / document the public crates by default
default-members = ["crates/*"] default-members = ["crates/*"]
resolver = "2" resolver = "2"

5
examples/README.md
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# Ruma Examples The examples have moved to another repository, at <https://github.com/ruma/examples>.
These are example projects showcasing how to use the various crates in this repository. You can use
these as a base for starting your own project.

11
examples/hello_world/Cargo.toml
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[package]
name = "hello_world"
version = "0.1.0"
edition = "2021"
publish = false
[dependencies]
ruma = { version = "0.10.1", path = "../../crates/ruma", features = ["client-api-c", "client-ext-client-api", "client-hyper-native-tls", "rand"] }
anyhow = "1.0.37"
tokio = { version = "1.0.1", features = ["macros", "rt"] }

13
examples/hello_world/README.md
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A simple example to demonstrate `ruma-client` functionality. Sends "Hello
World!" to the given room.
# Usage
You will need to use an existing account on a homeserver that allows login with
a password.
In this folder, you can run it with this command:
```shell
cargo run <homeserver_url> <username> <password> <room>
```

49
examples/hello_world/src/main.rs
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use std::{env, process::exit};
use ruma::{
api::client::{alias::get_alias, membership::join_room_by_id, message::send_message_event},
events::room::message::RoomMessageEventContent,
OwnedRoomAliasId, TransactionId,
};
type HttpClient = ruma::client::http_client::HyperNativeTls;
async fn hello_world(
homeserver_url: String,
username: &str,
password: &str,
room_alias: OwnedRoomAliasId,
) -> anyhow::Result<()> {
let client =
ruma::Client::builder().homeserver_url(homeserver_url).build::<HttpClient>().await?;
client.log_in(username, password, None, Some("ruma-example-client")).await?;
let room_id = client.send_request(get_alias::v3::Request::new(room_alias)).await?.room_id;
client.send_request(join_room_by_id::v3::Request::new(room_id.clone())).await?;
client
.send_request(send_message_event::v3::Request::new(
room_id,
TransactionId::new(),
&RoomMessageEventContent::text_plain("Hello World!"),
)?)
.await?;
Ok(())
}
#[tokio::main(flavor = "current_thread")]
async fn main() -> anyhow::Result<()> {
let (homeserver_url, username, password, room) =
match (env::args().nth(1), env::args().nth(2), env::args().nth(3), env::args().nth(4)) {
(Some(a), Some(b), Some(c), Some(d)) => (a, b, c, d),
_ => {
eprintln!(
"Usage: {} <homeserver_url> <username> <password> <room>",
env::args().next().unwrap()
);
exit(1)
}
};
hello_world(homeserver_url, &username, &password, room.try_into()?).await
}

21
examples/joke_bot/Cargo.toml
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@ -1,21 +0,0 @@
[package]
name = "joke_bot"
version = "0.1.0"
edition = "2021"
publish = false
[dependencies]
ruma = { version = "0.10.1", path = "../../crates/ruma", features = ["client-api-c", "client-ext-client-api", "client-hyper-native-tls", "rand"] }
# For building locally: use the git dependencies below.
# Browse the source at this revision here: https://github.com/ruma/ruma/tree/f161c8117c706fc52089999e1f406cf34276ec9d
# ruma = { git = "https://github.com/ruma/ruma", rev = "f161c8117c706fc52089999e1f406cf34276ec9d", features = ["client-api-c", "client", "client-hyper-native-tls", "events"] }
futures-util = { version = "0.3.21", default-features = false, features = ["std"] }
http = "1.1.0"
http-body-util = "0.1.1"
hyper = "1.3.1"
hyper-tls = "0.6.0"
hyper-util = { version = "0.1.3", features = ["client-legacy", "http1", "http2", "tokio"] }
serde_json = "1.0"
tokio = { version = "1", features = ["full"] }
tokio-stream = "0.1.7"

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examples/joke_bot/README.md
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A simple bot to demonstrate `ruma-client` functionality. Tells jokes when you ask for them.
# Note on dependency versions
This example was written against pre-release versions of `ruma` and
`ruma-client-api`. Check the comments in the `[dependencies]` section of
[`Cargo.toml`](Cargo.toml) for more information.
# Usage
Create a file called `config` and populate it with the following values in `key=value` format:
- `homeserver`: Your homeserver URL.
- `username`: The Matrix ID for the bot.
- `password`: The password for the bot.
For example:
```ini
homeserver=https://example.com:8448/
username=@user:example.com
password=yourpassword
```
You will need to pre-register the bot account; it doesn't do registration
automatically. The bot will automatically join rooms it is invited to though.
Finally, run the bot (e.g. using `cargo run`) from the same directory as your
`config` file. The bot should respond to the request "Tell me a joke" in any
channel that it is invited to.

278
examples/joke_bot/src/main.rs
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use std::{error::Error, io, process::exit, time::Duration};
use futures_util::future::{join, join_all};
use http_body_util::BodyExt as _;
use hyper_util::rt::TokioExecutor;
use ruma::{
api::client::{
filter::FilterDefinition, membership::join_room_by_id, message::send_message_event,
sync::sync_events,
},
assign, client,
events::{
room::message::{MessageType, RoomMessageEventContent},
AnySyncMessageLikeEvent, AnySyncTimelineEvent, SyncMessageLikeEvent,
},
presence::PresenceState,
serde::Raw,
OwnedRoomId, OwnedUserId, TransactionId, UserId,
};
use serde_json::Value as JsonValue;
use tokio::fs;
use tokio_stream::StreamExt as _;
#[tokio::main]
async fn main() -> Result<(), Box<dyn Error>> {
if let Err(e) = run().await {
eprintln!("{e}");
exit(1)
}
Ok(())
}
type HttpClient = client::http_client::HyperNativeTls;
type MatrixClient = client::Client<client::http_client::HyperNativeTls>;
async fn run() -> Result<(), Box<dyn Error>> {
let config =
read_config().await.map_err(|e| format!("configuration in ./config is invalid: {e}"))?;
let http_client = hyper_util::client::legacy::Client::builder(TokioExecutor::new())
.build(hyper_tls::HttpsConnector::new());
let matrix_client = if let Some(state) = read_state().await.ok().flatten() {
ruma::Client::builder()
.homeserver_url(config.homeserver.clone())
.access_token(Some(state.access_token))
.http_client(http_client.clone())
.await?
} else if config.password.is_some() {
let client = create_matrix_session(http_client.clone(), &config).await?;
if let Err(err) = write_state(&State {
access_token: client.access_token().expect("Matrix access token is missing"),
})
.await
{
eprintln!(
"Failed to persist access token to disk. \
Re-authentication will be required on the next startup: {err}",
);
}
client
} else {
return Err("No previous session found and no credentials stored in config".into());
};
let filter = FilterDefinition::ignore_all().into();
let initial_sync_response = matrix_client
.send_request(assign!(sync_events::v3::Request::new(), {
filter: Some(filter),
}))
.await?;
let user_id = &config.username;
let not_senders = vec![user_id.clone()];
let filter = {
let mut filter = FilterDefinition::empty();
filter.room.timeline.not_senders = not_senders;
filter
}
.into();
let mut sync_stream = Box::pin(matrix_client.sync(
Some(filter),
initial_sync_response.next_batch,
PresenceState::Online,
Some(Duration::from_secs(30)),
));
// Prevent the clients being moved by `async move` blocks
let http_client = &http_client;
let matrix_client = &matrix_client;
println!("Listening...");
while let Some(response) = sync_stream.try_next().await? {
let message_futures = response.rooms.join.iter().map(|(room_id, room_info)| async move {
// Use a regular for loop for the messages within one room to handle them sequentially
for e in &room_info.timeline.events {
if let Err(err) =
handle_message(http_client, matrix_client, e, room_id.to_owned(), user_id).await
{
eprintln!("failed to respond to message: {err}");
}
}
});
let invite_futures = response.rooms.invite.into_keys().map(|room_id| async move {
if let Err(err) = handle_invitations(http_client, matrix_client, room_id.clone()).await
{
eprintln!("failed to accept invitation for room {room_id}: {err}");
}
});
// Handle messages from different rooms as well as invites concurrently
join(join_all(message_futures), join_all(invite_futures)).await;
}
Ok(())
}
async fn create_matrix_session(
http_client: HttpClient,
config: &Config,
) -> Result<MatrixClient, Box<dyn Error>> {
if let Some(password) = &config.password {
let client = ruma::Client::builder()
.homeserver_url(config.homeserver.clone())
.http_client(http_client)
.await?;
if let Err(e) = client.log_in(config.username.as_ref(), password, None, None).await {
let reason = match e {
client::Error::AuthenticationRequired => "invalid credentials specified".to_owned(),
client::Error::Response(response_err) => {
format!("failed to get a response from the server: {response_err}")
}
client::Error::FromHttpResponse(parse_err) => {
format!("failed to parse log in response: {parse_err}")
}
_ => e.to_string(),
};
return Err(format!("Failed to log in: {reason}").into());
}
Ok(client)
} else {
Err("Failed to create session: no password stored in config".to_owned().into())
}
}
async fn handle_message(
http_client: &HttpClient,
matrix_client: &MatrixClient,
e: &Raw<AnySyncTimelineEvent>,
room_id: OwnedRoomId,
bot_user_id: &UserId,
) -> Result<(), Box<dyn Error>> {
if let Ok(AnySyncTimelineEvent::MessageLike(AnySyncMessageLikeEvent::RoomMessage(
SyncMessageLikeEvent::Original(m),
))) = e.deserialize()
{
// workaround because Conduit does not implement filtering.
if m.sender == bot_user_id {
return Ok(());
}
if let MessageType::Text(t) = m.content.msgtype {
println!("{}:\t{}", m.sender, t.body);
if t.body.to_ascii_lowercase().contains("joke") {
let joke = match get_joke(http_client).await {
Ok(joke) => joke,
Err(_) => "I thought of a joke... but I just forgot it.".to_owned(),
};
let joke_content = RoomMessageEventContent::text_plain(joke);
let txn_id = TransactionId::new();
let req = send_message_event::v3::Request::new(
room_id.to_owned(),
txn_id,
&joke_content,
)?;
// Do nothing if we can't send the message.
let _ = matrix_client.send_request(req).await;
}
}
}
Ok(())
}
async fn handle_invitations(
http_client: &HttpClient,
matrix_client: &MatrixClient,
room_id: OwnedRoomId,
) -> Result<(), Box<dyn Error>> {
println!("invited to {room_id}");
matrix_client.send_request(join_room_by_id::v3::Request::new(room_id.clone())).await?;
let greeting = "Hello! My name is Mr. Bot! I like to tell jokes. Like this one: ";
let joke = get_joke(http_client).await.unwrap_or_else(|_| "err... never mind.".to_owned());
let content = RoomMessageEventContent::text_plain(format!("{greeting}\n{joke}"));
let txn_id = TransactionId::new();
let message = send_message_event::v3::Request::new(room_id, txn_id, &content)?;
matrix_client.send_request(message).await?;
Ok(())
}
async fn get_joke(client: &HttpClient) -> Result<String, Box<dyn Error>> {
let uri = "https://v2.jokeapi.dev/joke/Programming,Pun,Misc?safe-mode&type=single"
.parse::<hyper::Uri>()?;
let rsp = client.get(uri).await?;
let bytes = rsp.into_body().collect().await?.to_bytes();
let joke_obj = serde_json::from_slice::<JsonValue>(&bytes)
.map_err(|_| "invalid JSON returned from joke API")?;
let joke = joke_obj["joke"].as_str().ok_or("joke field missing from joke API response")?;
Ok(joke.to_owned())
}
struct State {
access_token: String,
}
async fn write_state(state: &State) -> io::Result<()> {
let content = &state.access_token;
fs::write("./session", content).await?;
Ok(())
}
async fn read_state() -> io::Result<Option<State>> {
match fs::read_to_string("./session").await {
Ok(access_token) => Ok(Some(State { access_token })),
Err(e) if e.kind() == io::ErrorKind::NotFound => Ok(None),
Err(e) => Err(e),
}
}
struct Config {
homeserver: String,
username: OwnedUserId,
password: Option<String>,
}
async fn read_config() -> io::Result<Config> {
let content = fs::read_to_string("./config").await?;
let lines = content.split('\n');
let mut homeserver = None;
let mut username = Err("required field `username` is missing".to_owned());
let mut password = None;
for line in lines {
if let Some((key, value)) = line.split_once('=') {
match key.trim() {
"homeserver" => homeserver = Some(value.trim().to_owned()),
// TODO: infer domain from `homeserver`
"username" => {
username =
value.trim().to_owned().try_into().map_err(|e| {
format!("invalid Matrix user ID format for `username`: {e}")
});
}
"password" => password = Some(value.trim().to_owned()),
_ => {}
}
}
}
match (homeserver, username) {
(Some(homeserver), Ok(username)) => Ok(Config { homeserver, username, password }),
(homeserver, username) => {
let mut error = String::from("Invalid config specified:");
if homeserver.is_none() {
error.push_str("\n required field `homeserver` is missing");
}
if let Err(e) = username {
error.push_str("\n ");
error.push_str(&e);
}
Err(io::Error::new(io::ErrorKind::InvalidData, error))
}
}
}

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examples/message_log/Cargo.toml
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[package]
name = "message_log"
version = "0.1.0"
edition = "2021"
publish = false
[dependencies]
anyhow = "1.0.37"
ruma = { version = "0.10.1", path = "../../crates/ruma", features = ["client-api-c", "client-ext-client-api", "client-hyper-native-tls"] }
tokio = { version = "1.0.1", features = ["macros", "rt"] }
tokio-stream = { version = "0.1.1", default-features = false }

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examples/message_log/README.md
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A simple example to demonstrate `ruma-client` functionality. Prints all the
received text messages to stdout.
# Usage
You will need to use an existing account on a homeserver that allows login with
a password.
In this folder, you can run it with this command:
```shell
cargo run <homeserver_url> <username> <password>
```

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examples/message_log/src/main.rs
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use std::{env, process::exit, time::Duration};
use ruma::{
api::client::{filter::FilterDefinition, sync::sync_events},
assign,
events::{
room::message::{MessageType, RoomMessageEventContent, TextMessageEventContent},
AnySyncMessageLikeEvent, AnySyncTimelineEvent, OriginalSyncMessageLikeEvent,
SyncMessageLikeEvent,
},
presence::PresenceState,
};
use tokio_stream::StreamExt as _;
type HttpClient = ruma::client::http_client::HyperNativeTls;
async fn log_messages(
homeserver_url: String,
username: &str,
password: &str,
) -> anyhow::Result<()> {
let client =
ruma::Client::builder().homeserver_url(homeserver_url).build::<HttpClient>().await?;
client.log_in(username, password, None, None).await?;
let filter = FilterDefinition::ignore_all().into();
let initial_sync_response = client
.send_request(assign!(sync_events::v3::Request::new(), {
filter: Some(filter),
}))
.await?;
let mut sync_stream = Box::pin(client.sync(
None,
initial_sync_response.next_batch,
PresenceState::Online,
Some(Duration::from_secs(30)),
));
while let Some(res) = sync_stream.try_next().await? {
// Only look at rooms the user hasn't left yet
for (room_id, room) in res.rooms.join {
for event in room.timeline.events.into_iter().flat_map(|r| r.deserialize()) {
// Filter out the text messages
if let AnySyncTimelineEvent::MessageLike(AnySyncMessageLikeEvent::RoomMessage(
SyncMessageLikeEvent::Original(OriginalSyncMessageLikeEvent {
content:
RoomMessageEventContent {
msgtype:
MessageType::Text(TextMessageEventContent {
body: msg_body, ..
}),
..
},
sender,
..
}),
)) = event
{
println!("{sender} in {room_id}: {msg_body}");
}
}
}
}
Ok(())
}
#[tokio::main(flavor = "current_thread")]
async fn main() -> anyhow::Result<()> {
let (homeserver_url, username, password) =
match (env::args().nth(1), env::args().nth(2), env::args().nth(3)) {
(Some(a), Some(b), Some(c)) => (a, b, c),
_ => {
eprintln!(
"Usage: {} <homeserver_url> <username> <password>",
env::args().next().unwrap()
);
exit(1)
}
};
log_messages(homeserver_url, &username, &password).await
}