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implement slack backend

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This commit is contained in:
Brent Schroeter 2025-04-21 19:02:23 -07:00
parent e5215613d5
commit 1fd3dbef6e
18 changed files with 1238 additions and 118 deletions
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10
Cargo.lock generated
View file

@ -2571,6 +2571,15 @@ dependencies = [
"serde",
]
[[package]]
name = "serde_variant"
version = "0.1.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0a0068df419f9d9b6488fdded3f1c818522cdea328e02ce9d9f147380265a432"
dependencies = [
"serde",
]
[[package]]
name = "sha1"
version = "0.10.6"
@ -2647,6 +2656,7 @@ dependencies = [
"reqwest 0.12.14",
"serde",
"serde_json",
"serde_variant",
"tokio",
"tower",
"tower-http",

1
Cargo.toml
View file

@ -26,6 +26,7 @@ regex = "1.11.1"
reqwest = { version = "0.12.8", features = ["json"] }
serde = { version = "1.0.213", features = ["derive"] }
serde_json = "1.0.132"
serde_variant = "0.1.3"
tokio = { version = "1.42.0", features = ["full"] }
tower = "0.5.2"
tower-http = { version = "0.6.2", features = ["compression-gzip", "fs", "normalize-path", "set-header", "trace"] }

1
migrations/2025-04-21-071711_failable_messages/down.sql Normal file
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@ -0,0 +1 @@
ALTER TABLE messages DROP COLUMN IF EXISTS failed_at;

2
migrations/2025-04-21-071711_failable_messages/up.sql Normal file
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@ -0,0 +1,2 @@
ALTER TABLE messages ADD COLUMN failed_at TIMESTAMPTZ;
CREATE INDEX ON messages (failed_at);

7
src/app_state.rs
View file

@ -10,10 +10,12 @@ use oauth2::basic::BasicClient;
use crate::{
app_error::AppError,
auth,
email::{Mailer, SmtpOptions},
nav::NavbarBuilder,
sessions::PgStore,
settings::Settings,
slack_auth,
};
/// Global app configuration
@ -25,6 +27,7 @@ pub struct App {
pub reqwest_client: reqwest::Client,
pub session_store: PgStore,
pub settings: Settings,
pub slack_oauth_client: BasicClient,
}
impl App {
@ -37,7 +40,8 @@ impl App {
let session_store = PgStore::new(db_pool.clone());
let reqwest_client = reqwest::ClientBuilder::new().https_only(true).build()?;
let oauth_client = crate::auth::new_oauth_client(&settings)?;
let oauth_client = auth::new_oauth_client(&settings)?;
let slack_oauth_client = slack_auth::new_oauth_client(&settings)?;
let mailer = if let Some(smtp_settings) = settings.email.smtp.clone() {
Mailer::new_smtp(SmtpOptions {
@ -60,6 +64,7 @@ impl App {
reqwest_client,
session_store,
settings,
slack_oauth_client,
})
}
}

19
src/channels.rs
View file

@ -1,3 +1,5 @@
use std::fmt::Debug;
use diesel::{
backend::Backend,
deserialize::{self, FromSql, FromSqlRow},
@ -17,6 +19,8 @@ use crate::{schema::channels, teams::Team};
pub const CHANNEL_BACKEND_EMAIL: &str = "email";
pub const CHANNEL_BACKEND_SLACK: &str = "slack";
pub use crate::schema::channels::{dsl, table};
/// Represents a target/destination for messages, with the sender configuration
/// defined in the backend_config field. A single channel may be attached to
/// (in other words, "enabled" or "selected" for) any number of projects within
@ -144,12 +148,11 @@ impl From<EmailBackendConfig> for BackendConfig {
}
}
#[derive(Clone, Debug, Deserialize, Serialize)]
#[derive(Clone, Debug, Default, Deserialize, Serialize)]
pub struct SlackBackendConfig {
pub oauth_state: String,
pub access_token: String,
pub refresh_token: String,
pub conversation_id: String,
pub oauth_state: Option<oauth2::CsrfToken>,
pub oauth_tokens: Option<OAuthTokens>,
pub conversation_id: Option<String>,
}
impl TryFrom<BackendConfig> for SlackBackendConfig {
@ -171,3 +174,9 @@ impl From<SlackBackendConfig> for BackendConfig {
Self::Slack(value)
}
}
#[derive(Clone, Debug, Deserialize, Serialize)]
pub struct OAuthTokens {
pub access_token: oauth2::AccessToken,
pub refresh_token: Option<oauth2::RefreshToken>,
}

153
src/channels_router.rs
View file

@ -14,14 +14,19 @@ use uuid::Uuid;
use crate::{
app_error::AppError,
app_state::{AppState, DbConn},
channels::{BackendConfig, Channel, EmailBackendConfig, CHANNEL_BACKEND_EMAIL},
app_state::{AppState, DbConn, ReqwestClient},
channels::{
BackendConfig, Channel, EmailBackendConfig, SlackBackendConfig, CHANNEL_BACKEND_EMAIL,
CHANNEL_BACKEND_SLACK,
},
csrf::generate_csrf_token,
email::{is_permissible_email, MailSender as _, Mailer},
guards,
nav::{BreadcrumbTrail, Navbar, NavbarBuilder, NAVBAR_ITEM_CHANNELS},
schema::channels,
settings::Settings,
settings::{Settings, SlackSettings},
slack_auth,
slack_utils::{self, ConversationType, SlackClient},
users::CurrentUser,
};
@ -63,7 +68,12 @@ pub fn new_router() -> Router<AppState> {
"/teams/{team_id}/channels/{channel_id}/verify-email",
post(verify_email),
)
.route(
"/teams/{team_id}/channels/{channel_id}/update-slack-conversation",
post(update_channel_slack_conversation),
)
.route("/teams/{team_id}/new-channel", post(post_new_channel))
.merge(slack_auth::new_router())
}
async fn channels_page(
@ -151,6 +161,22 @@ async fn post_new_channel(
})
.await
.unwrap()?,
CHANNEL_BACKEND_SLACK => db_conn
.interact::<_, Result<Channel, AppError>>(move |conn| {
Ok(diesel::insert_into(channels::table)
.values((
channels::id.eq(channel_id),
channels::team_id.eq(team_id),
channels::name.eq("Untitled Slack Channel"),
channels::backend_config
.eq(Into::<BackendConfig>::into(SlackBackendConfig::default())),
))
.returning(Channel::as_returning())
.get_result(conn)
.context("Failed to insert new SlackChannel.")?)
})
.await
.unwrap()?,
_ => {
return Err(AppError::BadRequest(
"Channel type not recognized.".to_string(),
@ -167,8 +193,16 @@ async fn post_new_channel(
}
async fn channel_page(
State(Settings { base_path, .. }): State<Settings>,
State(Settings {
base_path,
slack: SlackSettings {
api_root: slack_api_root,
..
},
..
}): State<Settings>,
State(navbar_template): State<NavbarBuilder>,
State(ReqwestClient(reqwest_client)): State<ReqwestClient>,
DbConn(db_conn): DbConn,
Path((team_id, channel_id)): Path<(Uuid, Uuid)>,
CurrentUser(current_user): CurrentUser,
@ -198,7 +232,7 @@ async fn channel_page(
let csrf_token = generate_csrf_token(&db_conn, Some(current_user.id)).await?;
match channel.backend_config {
match channel.backend_config.clone() {
BackendConfig::Email(_) => {
#[derive(Template)]
#[template(path = "channel-email.html")]
@ -228,8 +262,51 @@ async fn channel_page(
.render()?,
))
}
BackendConfig::Slack(_) => {
Err(anyhow::anyhow!("Slack channel config page is not yet implemented.").into())
BackendConfig::Slack(slack_data) => {
let slack_client = slack_data.oauth_tokens.map(|tokens| {
SlackClient::new(&tokens.access_token)
.with_reqwest_client(reqwest_client)
.with_api_root(&slack_api_root)
});
let slack_channels = if let Some(client) = slack_client {
client
.list_conversations()
.with_types([ConversationType::PublicChannel])
.with_exclude_archived(true)
.load_all()
.await?
} else {
Vec::new()
};
#[derive(Template)]
#[template(path = "channel-slack.html")]
struct ResponseTemplate {
base_path: String,
breadcrumbs: BreadcrumbTrail,
channel: Channel,
csrf_token: String,
navbar: Navbar,
slack_channels: Vec<slack_utils::Conversation>,
}
Ok(Html(
ResponseTemplate {
breadcrumbs: BreadcrumbTrail::from_base_path(&base_path)
.with_i18n_slug("en")
.push_slug("Teams", "teams")
.push_slug(&team.name, &team.id.simple().to_string())
.push_slug("Channels", "channels")
.push_slug(&channel.name, &channel.id.simple().to_string()),
base_path,
channel,
csrf_token,
navbar: navbar_template
.with_param("team_id", &team.id.simple().to_string())
.with_active_item(NAVBAR_ITEM_CHANNELS)
.build(),
slack_channels,
}
.render()?,
))
}
}
}
@ -373,6 +450,68 @@ async fn update_channel_email_recipient(
)))
}
#[derive(Deserialize)]
struct UpdateChannelSlackConversationFormBody {
csrf_token: String,
conversation_id: String,
}
async fn update_channel_slack_conversation(
State(Settings { base_path, .. }): State<Settings>,
DbConn(db_conn): DbConn,
Path((team_id, channel_id)): Path<(Uuid, Uuid)>,
CurrentUser(current_user): CurrentUser,
Form(form): Form<UpdateChannelSlackConversationFormBody>,
) -> Result<impl IntoResponse, AppError> {
guards::require_valid_csrf_token(&form.csrf_token, &current_user, &db_conn).await?;
guards::require_team_membership(&current_user, &team_id, &db_conn).await?;
tracing::debug!("updating conversation id");
db_conn
.interact(move |conn| -> Result<(), AppError> {
let channel = Channel::all()
.filter(Channel::with_id(&channel_id))
.filter(Channel::with_team(&team_id))
.first(conn)
.optional()
.context("failed to load channel")?
.ok_or(AppError::NotFound(
"Channel with that team and ID not found.".to_owned(),
))?;
tracing::debug!("loaded channel");
let mut slack_data: SlackBackendConfig = channel
.backend_config
.try_into()
.map_err(|_| AppError::BadRequest("Not a Slack channel.".to_owned()))?;
tracing::debug!("parsed slack config");
// There should be no need to validate that this is a real
// conversation ID, or one that the end user should have access to,
// since the end user should be allowed to wire up Shout.dev with
// any channel that is in scope for the access token.
// TODO: Ensure this holds true with private channels and groups.
slack_data.conversation_id = Some(form.conversation_id);
let num_rows = diesel::update(channels::table.filter(Channel::with_id(&channel.id)))
.set(channels::backend_config.eq(BackendConfig::from(slack_data)))
.execute(conn)?;
tracing::debug!("updated {} rows", num_rows);
// If the channel is deleted while this db interaction is running, 0
// rows will be updated, which is technically correct in that case,
// but we should still throw an error because the intended mutation
// has not in fact been performed.
assert_eq!(num_rows, 1);
Ok(())
})
.await
.unwrap()?;
Ok(Redirect::to(&format!(
"{}/en/teams/{}/channels/{}",
base_path,
team_id.simple(),
channel_id.simple()
)))
}
#[derive(Deserialize)]
struct VerifyEmailFormBody {
csrf_token: String,

2
src/main.rs
View file

@ -32,6 +32,8 @@ mod router;
mod schema;
mod sessions;
mod settings;
mod slack_auth;
mod slack_utils;
mod team_invitations;
mod team_memberships;
mod teams;

16
src/messages.rs
View file

@ -8,6 +8,8 @@ use uuid::Uuid;
use crate::{channels::Channel, schema::messages};
pub use crate::schema::messages::{dsl, table};
/// A "/say" message queued for sending
#[derive(Associations, Clone, Debug, Identifiable, Queryable, Selectable)]
#[diesel(table_name = messages)]
@ -18,6 +20,7 @@ pub struct Message {
pub channel_id: Uuid,
pub created_at: DateTime<Utc>,
pub sent_at: Option<DateTime<Utc>>,
pub failed_at: Option<DateTime<Utc>>,
pub message: String,
}
@ -25,16 +28,21 @@ impl Message {
#[auto_type(no_type_alias)]
pub fn all() -> _ {
let select: AsSelect<Message, Pg> = Message::as_select();
messages::table.select(select)
table.select(select)
}
#[auto_type(no_type_alias)]
pub fn with_id<'a>(id: &'a Uuid) -> _ {
dsl::id.eq(id)
}
#[auto_type(no_type_alias)]
pub fn with_channel<'a>(channel_id: &'a Uuid) -> _ {
messages::channel_id.eq(channel_id)
dsl::channel_id.eq(channel_id)
}
#[auto_type(no_type_alias)]
pub fn is_not_sent() -> _ {
messages::sent_at.is_null()
pub fn is_pending() -> _ {
dsl::sent_at.is_null().and(dsl::failed_at.is_null())
}
}

1
src/schema.rs
View file

@ -70,6 +70,7 @@ diesel::table! {
created_at -> Timestamptz,
sent_at -> Nullable<Timestamptz>,
message -> Text,
failed_at -> Nullable<Timestamptz>,
}
}

18
src/settings.rs
View file

@ -4,7 +4,7 @@ use config::{Config, Environment};
use dotenvy::dotenv;
use serde::Deserialize;
use crate::app_state::AppState;
use crate::{app_state::AppState, slack_utils};
#[derive(Clone, Debug, Deserialize)]
pub struct Settings {
@ -34,6 +34,8 @@ pub struct Settings {
pub auth: AuthSettings,
pub email: EmailSettings,
pub slack: SlackSettings,
}
fn default_port() -> u16 {
@ -81,12 +83,22 @@ pub struct EmailSettings {
pub postmark: Option<PostmarkSettings>,
}
#[derive(Clone, Debug, Deserialize)]
pub struct SlackSettings {
pub client_id: String,
pub client_secret: String,
pub redirect_url: String,
#[serde(default = "default_slack_auth_url")]
pub auth_url: String,
pub token_url: String,
#[serde(default = "default_slack_api_root")]
pub api_root: String,
}
fn default_slack_auth_url() -> String {
"https://slack.com/oauth/v2/authorize".to_owned()
}
fn default_slack_api_root() -> String {
slack_utils::DEFAULT_API_ROOT.to_owned()
}
impl Settings {

321
src/slack_auth.rs Normal file
View file

@ -0,0 +1,321 @@
use std::borrow::Cow;
use anyhow::{Context as _, Result};
use axum::{
extract::{Path, Query, State},
response::{IntoResponse, Redirect, Response},
routing::{get, post},
Router,
};
use axum_extra::extract::Form;
use diesel::prelude::*;
use oauth2::{
basic::BasicClient, reqwest::async_http_client, AuthUrl, AuthorizationCode, ClientId,
ClientSecret, CsrfToken, RedirectUrl, TokenResponse, TokenUrl,
};
use serde::Deserialize;
use uuid::Uuid;
use crate::{
app_error::AppError,
app_state::{AppState, DbConn, ReqwestClient},
channels::{self, BackendConfig, Channel, OAuthTokens, SlackBackendConfig},
guards,
settings::{Settings, SlackSettings},
users::CurrentUser,
};
/// Creates a new OAuth2 client to be stored in global application state.
pub fn new_oauth_client(settings: &Settings) -> Result<BasicClient> {
Ok(BasicClient::new(
ClientId::new(settings.slack.client_id.clone()),
Some(ClientSecret::new(settings.slack.client_secret.clone())),
AuthUrl::new(settings.slack.auth_url.clone())
.context("failed to create new authorization server URL")?,
Some(
TokenUrl::new(format!("{}/oauth.v2.access", settings.slack.api_root))
.context("failed to create new token endpoint URL")?,
),
))
}
/// Creates a router which can be nested within the higher level app router.
pub fn new_router() -> Router<AppState> {
Router::new()
.route(
"/teams/{team_id}/channels/{channel_id}/slack-auth/login",
post(start_login),
)
.route(
"/teams/{team_id}/channels/{channel_id}/slack-auth/callback",
get(callback),
)
.route(
"/teams/{team_id}/channels/{channel_id}/slack-auth/revoke",
post(revoke),
)
}
#[derive(Deserialize)]
struct StartLoginFormBody {
csrf_token: String,
}
/// HTTP get handler for /login
async fn start_login(
State(app_state): State<AppState>,
State(Settings {
base_path,
frontend_host,
..
}): State<Settings>,
DbConn(db_conn): DbConn,
CurrentUser(current_user): CurrentUser,
Path((team_id, channel_id)): Path<(Uuid, Uuid)>,
Form(form): Form<StartLoginFormBody>,
) -> Result<Response, AppError> {
guards::require_valid_csrf_token(&form.csrf_token, &current_user, &db_conn).await?;
guards::require_team_membership(&current_user, &team_id, &db_conn).await?;
let channel = db_conn
.interact(move |conn| -> Result<Channel, AppError> {
Channel::all()
.filter(Channel::with_id(&channel_id))
.filter(Channel::with_team(&team_id))
.first(conn)
.optional()?
.ok_or(AppError::NotFound(
"channel with that ID and team not found".to_owned(),
))
})
.await
.unwrap()?;
let csrf_token = CsrfToken::new_random();
let SlackBackendConfig {
conversation_id, ..
} = channel
.backend_config
.try_into()
.map_err(|_| anyhow::anyhow!("channel does not have a Slack backend"))?;
let slack_config = SlackBackendConfig {
conversation_id,
oauth_state: Some(csrf_token.clone()),
oauth_tokens: None,
};
const SCOPE_CHANNELS_READ: &str = "channels:read";
const SCOPE_CHAT_WRITE_PUBLIC: &str = "chat:write.public";
let (auth_url, _csrf_token) = app_state
.slack_oauth_client
.authorize_url(|| csrf_token)
.add_scopes([
oauth2::Scope::new(SCOPE_CHANNELS_READ.to_owned()),
oauth2::Scope::new(SCOPE_CHAT_WRITE_PUBLIC.to_owned()),
])
.set_redirect_uri(Cow::Owned(
RedirectUrl::new(format!(
"{}{}/en/teams/{}/channels/{}/slack-auth/callback",
frontend_host, base_path, team_id, channel_id
))
.context("failed to create redirection URL")?,
))
.url();
db_conn
.interact(move |conn| -> Result<()> {
diesel::update(channels::table.filter(Channel::with_id(&channel.id)))
.set(channels::dsl::backend_config.eq(Into::<BackendConfig>::into(slack_config)))
.execute(conn)
.map(|_| ())
.map_err(Into::into)
})
.await
.unwrap()?;
Ok(Redirect::to(auth_url.as_ref()).into_response())
}
#[derive(Debug, Deserialize)]
struct AuthRequestQuery {
code: String,
/// CSRF token
state: String,
}
/// HTTP get handler for /callback
async fn callback(
Query(query): Query<AuthRequestQuery>,
State(app_state): State<AppState>,
State(Settings {
base_path,
frontend_host,
..
}): State<Settings>,
DbConn(db_conn): DbConn,
CurrentUser(current_user): CurrentUser,
Path((team_id, channel_id)): Path<(Uuid, Uuid)>,
) -> Result<impl IntoResponse, AppError> {
guards::require_team_membership(&current_user, &team_id, &db_conn).await?;
let channel = db_conn
.interact(move |conn| -> Result<Channel, AppError> {
Channel::all()
.filter(Channel::with_id(&channel_id))
.filter(Channel::with_team(&team_id))
.first(conn)
.optional()?
.ok_or(AppError::NotFound(
"channel with that ID and team not found".to_owned(),
))
})
.await
.unwrap()?;
let slack_data: SlackBackendConfig = channel
.backend_config
.try_into()
.map_err(|_| anyhow::anyhow!("channel does not have a Slack backend"))?;
let true_csrf_token = slack_data.oauth_state.ok_or(AppError::BadRequest(
"No active Slack auth flow.".to_owned(),
))?;
if true_csrf_token.secret() != &query.state {
tracing::debug!("oauth csrf tokens did not match");
return Err(AppError::Forbidden(
"Slack OAuth CSRF tokens do not match.".to_owned(),
));
}
tracing::debug!("exchanging authorization code");
let response = app_state
.slack_oauth_client
.exchange_code(AuthorizationCode::new(query.code))
.set_redirect_uri(Cow::Owned(
RedirectUrl::new(format!(
"{}{}/en/teams/{}/channels/{}/slack-auth/callback",
frontend_host, base_path, team_id, channel_id
))
.context("failed to create redirection URL")?,
))
.request_async(async_http_client)
.await
.context("failed to exchange slack oauth code")?;
let slack_data = SlackBackendConfig {
conversation_id: slack_data.conversation_id,
oauth_state: None,
oauth_tokens: Some(OAuthTokens {
access_token: response.access_token().to_owned(),
refresh_token: response.refresh_token().map(|value| value.to_owned()),
}),
};
db_conn
.interact(move |conn| -> Result<()> {
let n_rows = diesel::update(channels::table.filter(Channel::with_id(&channel_id)))
.set(channels::dsl::backend_config.eq(BackendConfig::from(slack_data)))
.execute(conn)?;
tracing::debug!("updated {} rows", n_rows);
assert!(n_rows == 1);
Ok(())
})
.await
.unwrap()?;
tracing::debug!("successfully authenticated");
Ok(Redirect::to(&format!(
"{}/en/teams/{}/channels/{}",
base_path, team_id, channel_id
)))
}
#[derive(Deserialize)]
struct RevokeFormBody {
csrf_token: String,
}
async fn revoke(
State(Settings {
base_path,
slack: SlackSettings { api_root, .. },
..
}): State<Settings>,
State(ReqwestClient(reqwest_client)): State<ReqwestClient>,
DbConn(db_conn): DbConn,
CurrentUser(current_user): CurrentUser,
Path((team_id, channel_id)): Path<(Uuid, Uuid)>,
Form(form): Form<RevokeFormBody>,
) -> Result<Response, AppError> {
guards::require_valid_csrf_token(&form.csrf_token, &current_user, &db_conn).await?;
guards::require_team_membership(&current_user, &team_id, &db_conn).await?;
let channel = db_conn
.interact(move |conn| -> Result<Channel, AppError> {
Channel::all()
.filter(Channel::with_id(&channel_id))
.filter(Channel::with_team(&team_id))
.first(conn)
.optional()?
.ok_or(AppError::NotFound(
"channel with that ID and team not found".to_owned(),
))
})
.await
.unwrap()?;
let slack_data: SlackBackendConfig = channel
.backend_config
.try_into()
.map_err(|_| anyhow::anyhow!("channel does not have a Slack backend"))?;
if let Some(OAuthTokens { access_token, .. }) = slack_data.oauth_tokens {
#[derive(Deserialize)]
struct ApiResponse {
revoked: Option<bool>,
error: Option<String>,
}
tracing::debug!("revoking slack access token via slack api");
let response: ApiResponse = reqwest_client
.get(format!("{}/auth.revoke", api_root))
.bearer_auth(access_token.secret())
.send()
.await?
.error_for_status()?
.json()
.await?;
if response.revoked == Some(true) {
tracing::debug!("access token revoked successfully; updating backend config");
let slack_data = SlackBackendConfig {
conversation_id: slack_data.conversation_id,
oauth_state: None,
oauth_tokens: None,
};
db_conn
.interact(move |conn| -> Result<()> {
let n_rows =
diesel::update(channels::table.filter(Channel::with_id(&channel_id)))
.set(channels::dsl::backend_config.eq(BackendConfig::from(slack_data)))
.execute(conn)?;
tracing::debug!("updated {} rows", n_rows);
assert!(n_rows == 1);
Ok(())
})
.await
.unwrap()?;
tracing::debug!("backend config successfully updated");
Ok(Redirect::to(&format!(
"{}/en/teams/{}/channels/{}",
base_path, team_id, channel_id
))
.into_response())
} else if let Some(message) = response.error {
Err(anyhow::anyhow!("error while revoking access token: {}", message).into())
} else {
Err(anyhow::anyhow!("unknown error while revoking access token").into())
}
} else {
Err(AppError::BadRequest(
"Channel is not currently authenticated with Slack credentials.".to_owned(),
))
}
}

464
src/slack_utils.rs Normal file
View file

@ -0,0 +1,464 @@
use std::{collections::HashSet, fmt::Display};
use anyhow::{Context as _, Result};
use reqwest::RequestBuilder;
use serde::{Deserialize, Serialize};
use tracing::Instrument;
use validator::Validate;
use crate::app_error::AppError;
// ================ Common ================ //
pub const DEFAULT_API_ROOT: &str = "https://slack.com/api";
#[derive(Clone, Debug)]
pub struct SlackClient {
access_token: oauth2::AccessToken,
api_root: String,
reqwest_client: reqwest::Client,
}
impl SlackClient {
pub fn new(access_token: &oauth2::AccessToken) -> Self {
Self {
access_token: access_token.to_owned(),
api_root: DEFAULT_API_ROOT.to_owned(),
reqwest_client: reqwest::ClientBuilder::new()
.https_only(true)
.build()
.expect("reqwest client is always built with the same options"),
}
}
/// Sets the API root (for example, "https://slack.com/api")
pub fn with_api_root(mut self, api_root: &str) -> Self {
self.api_root = api_root.to_owned();
self
}
/// Use a pre-existing reqwest client for making HTTP requests
pub fn with_reqwest_client(mut self, reqwest_client: reqwest::Client) -> Self {
self.reqwest_client = reqwest_client;
self
}
/// Create an authenticated reqwest::RequestBuilder for an API endpoint.
fn get(&self, slack_method: &str) -> RequestBuilder {
self.reqwest_client
.get(format!("{}/{}", self.api_root, slack_method))
.bearer_auth(self.access_token.secret())
}
/// Create an authenticated reqwest::RequestBuilder for an API endpoint.
fn post(&self, slack_method: &str) -> RequestBuilder {
self.reqwest_client
.post(format!("{}/{}", self.api_root, slack_method))
.bearer_auth(self.access_token.secret())
}
pub fn list_conversations(&self) -> ListConversationsRequest {
ListConversationsRequest::new(self.clone())
}
pub fn post_chat_message(&self) -> PostChatMessageRequest {
PostChatMessageRequest::new(self.clone())
}
}
#[derive(Clone, Debug, Deserialize)]
pub struct ResponseMetadata {
pub next_cursor: Option<String>,
}
#[derive(Clone, Debug, Deserialize)]
#[serde(untagged)]
pub enum ApiResult<R: Clone> {
Ok(R),
Err(ApiError),
}
impl<R: Clone> From<ApiResult<R>> for std::result::Result<R, SlackError> {
fn from(val: ApiResult<R>) -> Self {
match val {
ApiResult::Ok(response) => Ok(response),
ApiResult::Err(error) => Err(SlackError::Api(error)),
}
}
}
// ================ Conversations ================ //
#[derive(Clone, Debug, Serialize, Validate)]
pub struct ListConversationsRequest {
#[serde(skip)]
client: SlackClient,
cursor: Option<String>,
exclude_archived: Option<bool>,
types: Option<String>,
}
impl ListConversationsRequest {
pub fn new(client: SlackClient) -> Self {
Self {
client,
cursor: None,
exclude_archived: None,
types: None,
}
}
// Takes String instead of &str, since pagination will almost always
// provide and consume an owned string value
pub fn with_cursor(mut self, cursor: String) -> Self {
self.cursor = Some(cursor);
self
}
pub fn with_exclude_archived(mut self, exclude_archived: bool) -> Self {
self.exclude_archived = Some(exclude_archived);
self
}
pub fn with_types<I: IntoIterator<Item = ConversationType>>(mut self, types: I) -> Self {
self.types = Some(
types
.into_iter()
.collect::<HashSet<ConversationType>>()
.into_iter()
.map(|value| value.to_string())
.collect::<Vec<String>>()
.join(","),
);
self
}
pub async fn load(self) -> Result<ListConversationsResponse, SlackError> {
async {
tracing::debug!("loading page of slack conversations");
self.validate()?;
tracing::debug!("request structure validated");
let mut response: ListConversationsResponse = std::result::Result::from(
self.client
.get("conversations.list")
.query(&self)
.send()
.await
.context("error sending request")?
.error_for_status()
.context("bad http status")?
.json::<ApiResult<ListConversationsResponse>>()
.await
.context("failed to deserialize response")?,
)?;
tracing::debug!("loaded page successfully");
response.request = Some(self);
Ok(response)
}
.instrument(tracing::debug_span!("ListConversationsRequest::load()"))
.await
}
pub async fn load_all(self) -> Result<Vec<Conversation>, SlackError> {
let mut conversations: Vec<Conversation> = Vec::new();
let mut response = self.load().await?;
conversations.append(&mut response.channels);
while let Some(request) = response.next_page()? {
response = request.load().await?;
conversations.append(&mut response.channels);
}
Ok(conversations)
}
}
#[derive(Clone, Debug, Deserialize)]
pub struct ListConversationsResponse {
#[serde(skip)]
request: Option<ListConversationsRequest>,
pub channels: Vec<Conversation>,
pub response_metadata: ResponseMetadata,
}
impl ListConversationsResponse {
pub fn next_page(&self) -> Result<Option<ListConversationsRequest>> {
if self.response_metadata.next_cursor == Some("".to_owned()) {
Ok(None)
} else {
self.request
.clone()
.ok_or(anyhow::anyhow!(
"original request was not stored with the api response"
))
.map(|request| {
self.response_metadata
.next_cursor
.clone()
.map(|cursor| request.with_cursor(cursor))
})
}
}
}
#[derive(Clone, Debug, Deserialize)]
#[serde(untagged)]
pub enum Conversation {
Channel(ChannelConversation),
Group(GroupConversation),
Im(ImConversation),
}
#[derive(Clone, Debug, Deserialize)]
pub struct ChannelConversation {
pub id: String,
pub name: String,
pub is_archived: bool,
pub name_normalized: String,
pub is_member: bool,
pub is_private: bool,
}
#[derive(Clone, Debug, Deserialize)]
pub struct GroupConversation {
pub id: String,
pub name: String,
pub is_archived: bool,
pub name_normalized: String,
pub is_member: bool,
pub is_mpim: bool,
pub is_open: bool,
}
#[derive(Clone, Debug, Deserialize)]
pub struct ImConversation {
pub id: String,
pub is_im: bool,
pub user: String,
}
#[derive(Clone, Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
#[serde(rename_all = "snake_case")]
pub enum ConversationType {
/// Public channel
PublicChannel,
/// Private channel
PrivateChannel,
/// Individual DM chat
Im,
/// Multi-person DM chat
Mpim,
}
impl Display for ConversationType {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "{}", serde_variant::to_variant_name(self).unwrap())
}
}
// ================ Chat ================ //
#[derive(Clone, Debug, Serialize, Validate)]
pub struct PostChatMessageRequest {
#[serde(skip)]
client: SlackClient,
#[validate(required)]
channel: Option<String>,
#[validate(required, length(max = 4000))]
text: Option<String>,
mrkdwn: Option<bool>,
unfurl_links: Option<bool>,
unfurl_media: Option<bool>,
}
impl PostChatMessageRequest {
pub fn new(client: SlackClient) -> Self {
Self {
client,
channel: None,
text: None,
mrkdwn: None,
unfurl_links: None,
unfurl_media: None,
}
}
/// Set the Slack channel ID (not to be confused with Shout.dev's internal
/// channels concept).
pub fn with_channel(mut self, channel: &str) -> Self {
self.channel = Some(channel.to_owned());
self
}
pub fn with_text(mut self, text: &str) -> Self {
self.text = Some(text.to_owned());
self
}
pub fn with_mrkdwn(mut self, mrkdwn: bool) -> Self {
self.mrkdwn = Some(mrkdwn);
self
}
pub fn with_unfurl_links(mut self, unfurl_links: bool) -> Self {
self.unfurl_links = Some(unfurl_links);
self
}
pub fn with_unfurl_media(mut self, unfurl_media: bool) -> Self {
self.unfurl_media = Some(unfurl_media);
self
}
pub async fn execute(self) -> Result<PostChatMessageResponse, SlackError> {
async {
tracing::debug!("posting slack message");
self.validate()?;
tracing::debug!("request structure validated");
let response: PostChatMessageResponse = std::result::Result::from(
self.client
.post("chat.postMessage")
.json(&self)
.send()
.await
.context("error sending request")?
.error_for_status()
.context("bad http status")?
.json::<ApiResult<PostChatMessageResponse>>()
.await
.context("failed to deserialize response")?,
)?;
tracing::debug!("posted message successfully");
Ok(response)
}
.instrument(tracing::debug_span!("PostChatMessageRequest::execute()"))
.await
}
}
#[derive(Clone, Debug, Deserialize)]
pub struct PostChatMessageResponse {
pub ok: bool,
pub channel: String,
pub ts: String,
}
// ================ Errors ================ //
#[derive(Debug)]
pub enum SlackError {
Api(ApiError),
Unknown(anyhow::Error),
}
impl Display for SlackError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
Self::Api(error) => write!(f, "API error: {:?}", error),
Self::Unknown(error) => error.fmt(f),
}
}
}
impl<E> From<E> for SlackError
where
E: Into<anyhow::Error>,
{
fn from(err: E) -> Self {
Self::Unknown(Into::<anyhow::Error>::into(err))
}
}
impl From<SlackError> for AppError {
fn from(value: SlackError) -> Self {
Self::InternalServerError(anyhow::anyhow!("Slack error: {}", value))
}
}
impl SlackError {
pub fn into_anyhow(self) -> anyhow::Error {
match self {
Self::Api(error) => anyhow::anyhow!("API error: {:?}", error),
Self::Unknown(error) => error,
}
}
}
#[derive(Clone, Debug, Deserialize, PartialEq)]
pub struct ApiError {
pub error: ErrorCode,
}
#[derive(Clone, Debug, Deserialize, PartialEq)]
#[serde(rename_all = "snake_case")]
pub enum ErrorCode {
AccessDenied,
Accesslimited,
AccountInactive,
AsUserNotSupported,
AttachmentPayloadLimitExceeded,
CannotReplyToMessage,
ChannelNotFound,
DeprecatedEndpoint,
DuplicateChannelNotFound,
DuplicateMessageNotFound,
EkmAccessDenied,
EnterpriseIsRestricted,
FatalError,
InternalError,
InvalidArgName,
InvalidArguments,
InvalidArrayArg,
InvalidAuth,
InvalidBlocks,
InvalidBlocksFormat,
InvalidCharset,
InvalidCursor,
InvalidFormData,
InvalidLimit,
InvalidMetadataFormat,
InvalidMetadataSchema,
InvalidPostType,
InvalidTypes,
IsArchived,
MarkdownTextConflict,
MessageLimitExceeded,
MessagesTabDisabled,
MetadataMustBeSentFromApp,
MetadataTooLarge,
MethodDeprecated,
MethodNotSupportedForChannelType,
MissingArgument,
MissingFileData,
MissingPostType,
MissingScope,
MsgBlocksTooLong,
NoPermission,
NoText,
NotAllowedTokenType,
NotAuthed,
NotInChannel,
OrgLoginRequired,
// Yes, there are two distinct rate limit error codes. "ratelimited" seems
// to be the generic one, and "rate_limited" seems to be specific to
// posting messages.
RateLimited,
Ratelimited,
RequestTimeout,
RestrictedAction,
RestrictedActionNonThreadableChannel,
RestrictedActionReadOnlyChannel,
RestrictedActionThreadLocked,
RestrictedActionThreadOnlyChannel,
ServiceUnavailable,
SlackConnectCanvasSharingBlocked,
SlackConnectFileLinkSharingBlocked,
SlackConnectListsSharingBlocked,
TeamAccessNotGranted,
TeamAddedToOrg,
TeamNotFound,
TokenExpired,
TokenRevoked,
TooManyAttachments,
TooManyContactCards,
TwoFactorSetupRequired,
}

136
src/worker.rs
View file

@ -5,11 +5,11 @@ use uuid::Uuid;
use crate::{
app_state::AppState,
channels::{Channel, EmailBackendConfig},
channels::{self, BackendConfig, Channel, EmailBackendConfig},
email::MailSender,
governors::Governor,
messages::Message,
schema::{channels, messages},
messages::{self, Message},
slack_utils::SlackClient,
};
pub async fn run_worker(state: AppState) -> Result<()> {
@ -32,55 +32,120 @@ async fn process_messages(state: AppState) -> Result<()> {
const MESSAGE_QUEUE_LIMIT: i64 = 250;
let db_conn = state.db_pool.get().await?;
let queued_messages = db_conn
.interact::<_, Result<Vec<(Message, Channel)>>>(move |conn| {
.interact(move |conn| -> Result<Vec<(Message, Channel)>> {
messages::table
.inner_join(channels::table)
.select((Message::as_select(), Channel::as_select()))
.filter(Message::is_not_sent())
.order(messages::created_at.asc())
.filter(Message::is_pending())
.order(messages::dsl::created_at.asc())
.limit(MESSAGE_QUEUE_LIMIT)
.load(conn)
.context("failed to load queued messages")
})
.await
.unwrap()?;
// Dispatch email messages together to take advantage of Postmark's
// batch send API
let emails: Vec<(Uuid, crate::email::Message)> = queued_messages
.iter()
.filter_map(|(message, channel)| {
if let Ok(backend_config) =
TryInto::<EmailBackendConfig>::try_into(channel.backend_config.clone())
let mut email_messages: Vec<(Message, Channel, EmailBackendConfig)> =
Vec::with_capacity(queued_messages.len());
for (message, channel) in queued_messages {
match channel.backend_config.clone() {
BackendConfig::Email(email_data) => {
email_messages.push((message, channel, email_data));
}
BackendConfig::Slack(slack_data) => {
let result: Result<()> = if let (Some(oauth_tokens), Some(conversation_id)) =
(slack_data.oauth_tokens, slack_data.conversation_id)
{
if backend_config.verified {
let recipient: lettre::message::Mailbox = if let Ok(recipient) =
backend_config.recipient.parse()
{
recipient
let slack_client = SlackClient::new(&oauth_tokens.access_token)
.with_reqwest_client(state.reqwest_client.clone())
.with_api_root(&state.settings.slack.api_root);
slack_client
.post_chat_message()
.with_channel(&conversation_id)
.with_text(&message.message)
.with_mrkdwn(false)
.with_unfurl_links(false)
.with_unfurl_media(false)
.execute()
.await
.map(|_| ())
.map_err(|err| err.into_anyhow())
} else {
tracing::error!("failed to parse recipient for channel {}", channel.id);
return None;
Err(anyhow::anyhow!("slack channel is not fully configured"))
};
if let Err(err) = result {
tracing::warn!("error sending message {}: {:?}", message.id, err);
db_conn
.interact(move |conn| -> Result<_> {
diesel::update(
messages::table.filter(Message::with_id(&message.id)),
)
.set(messages::dsl::failed_at.eq(diesel::dsl::now))
.execute(conn)
.context("failed to update message resolution")
})
.await
.unwrap()?;
} else {
db_conn
.interact(move |conn| -> Result<_> {
diesel::update(
messages::table.filter(Message::with_id(&message.id)),
)
.set(messages::dsl::sent_at.eq(diesel::dsl::now))
.execute(conn)
.context("failed to update message resolution")
})
.await
.unwrap()?;
}
}
}
}
let mut emails: Vec<(Uuid, crate::email::Message)> =
Vec::with_capacity(email_messages.len());
for (message, channel, email_data) in email_messages {
let result = if email_data.verified {
if let Ok(recipient) = email_data.recipient.parse::<lettre::message::Mailbox>() {
let email = crate::email::Message {
from: state.settings.email.message_from.clone(),
to: recipient.into(),
subject: "Shout".to_string(),
text_body: message.message.clone(),
};
tracing::debug!("Sending email to recipient for channel {}", channel.id);
Some((message.id, email))
tracing::debug!("prepared email to recipient for channel {}", channel.id);
emails.push((message.id, email));
Ok(())
} else {
tracing::info!(
Err(anyhow::anyhow!(
"failed to parse recipient for channel {}",
channel.id
))
}
} else {
Err(anyhow::anyhow!(
"Email recipient for channel {} is not verified",
channel.id
);
None
}
} else {
None
}
))
};
if let Err(err) = result {
tracing::warn!("error sending message {}: {:?}", message.id, err);
db_conn
.interact(move |conn| -> Result<_> {
diesel::update(messages::table.filter(Message::with_id(&message.id)))
.set(messages::dsl::failed_at.eq(diesel::dsl::now))
.execute(conn)
.context("failed to update message resolution")
})
.collect();
.await
.unwrap()?;
}
}
if !emails.is_empty() {
let message_ids: Vec<Uuid> = emails.iter().map(|(id, _)| *id).collect();
let results = state
@ -90,13 +155,16 @@ async fn process_messages(state: AppState) -> Result<()> {
assert!(results.len() == message_ids.len());
let results_by_id = message_ids.into_iter().zip(results.into_iter());
db_conn
.interact::<_, Result<_>>(move |conn| {
.interact(move |conn| -> Result<()> {
for (id, result) in results_by_id {
if let Err(err) = result {
tracing::error!("error sending message {}: {:?}", id, err);
tracing::warn!("error sending message {}: {:?}", id, err);
diesel::update(messages::table.filter(Message::with_id(&id)))
.set(messages::dsl::failed_at.eq(diesel::dsl::now))
.execute(conn)?;
} else {
diesel::update(messages::table.filter(messages::id.eq(id)))
.set(messages::sent_at.eq(diesel::dsl::now))
diesel::update(messages::table.filter(Message::with_id(&id)))
.set(messages::dsl::sent_at.eq(diesel::dsl::now))
.execute(conn)?;
}
}
@ -105,7 +173,9 @@ async fn process_messages(state: AppState) -> Result<()> {
.await
.unwrap()?;
}
tracing::info!("finished processing messages");
tracing::info!("finished processing email messages");
tracing::info!("finished processing all messages in batch");
Ok(())
}
.instrument(tracing::debug_span!("process_messages()"))

52
templates/channel-base.html Normal file
View file

@ -0,0 +1,52 @@
{% extends "base.html" %}
{% block title %}Shout.dev: Channels{% endblock %}
{% block main %}
{% include "breadcrumbs.html" %}
<main class="container mt-5">
<section class="mb-4">
<h1>Channel Configuration</h1>
</section>
<section class="mb-4">
<form
method="post"
action="{{ breadcrumbs.join("update-channel") }}"
>
<div class="mb-3">
<label for="channel-name-input" class="form-label">Channel Name</label>
<input
type="text"
class="form-control"
id="channel-name-input"
name="name"
value="{{ channel.name }}"
>
</div>
<div class="mb-3">
<div class="form-check form-switch">
<input
class="form-check-input"
{% if channel.enable_by_default %}
checked=""
{% endif %}
type="checkbox"
name="enable_by_default"
value="true"
role="switch"
id="channel-default-enabled-switch"
>
<label class="form-check-label" for="channel-default-enabled-switch">
Enable by default for new projects in this team
</label>
</div>
</div>
<div class="mb-3">
<input type="hidden" name="csrf_token" value="{{ csrf_token }}">
<button class="btn btn-primary" type="submit">Save</button>
</div>
</form>
</section>
{% block extra_config %}{% endblock %}
</main>
{% endblock %}

51
templates/channel-email.html
View file

@ -1,53 +1,7 @@
{% extends "base.html" %}
{% extends "channel-base.html" %}
{% block title %}Shout.dev: Channels{% endblock %}
{% block main %}
{% block extra_config %}
{% if let BackendConfig::Email(email_data) = channel.backend_config %}
{% include "breadcrumbs.html" %}
<main class="container mt-5">
<section class="mb-4">
<h1>Channel Configuration</h1>
</section>
<section class="mb-4">
<form
method="post"
action="{{ breadcrumbs.join("update-channel") }}"
>
<div class="mb-3">
<label for="channel-name-input" class="form-label">Channel Name</label>
<input
type="text"
class="form-control"
id="channel-name-input"
name="name"
value="{{ channel.name }}"
>
</div>
<div class="mb-3">
<div class="form-check form-switch">
<input
class="form-check-input"
{% if channel.enable_by_default %}
checked=""
{% endif %}
type="checkbox"
name="enable_by_default"
value="true"
role="switch"
id="channel-default-enabled-switch"
>
<label class="form-check-label" for="channel-default-enabled-switch">
Enable by default for new projects in this team
</label>
</div>
</div>
<div class="mb-3">
<input type="hidden" name="csrf_token" value="{{ csrf_token }}">
<button class="btn btn-primary" type="submit">Save</button>
</div>
</form>
</section>
<section class="mb-4">
<form
method="post"
@ -121,6 +75,5 @@
</form>
</section>
{% endif %}
</main>
{% endif %}
{% endblock %}

62
templates/channel-slack.html Normal file
View file

@ -0,0 +1,62 @@
{% extends "channel-base.html" %}
{% block extra_config %}
<hr>
{% if let BackendConfig::Slack(slack_data) = channel.backend_config %}
{% if slack_data.oauth_tokens.is_none() %}
<section class="mb-4">
<form
method="post"
action="{{ breadcrumbs.join("slack-auth/login") }}"
>
<input type="hidden" name="csrf_token" value="{{ csrf_token }}">
<button class="btn btn-primary" type="submit">Link to Slack</button>
</form>
</section>
{% else %}
<section class="mb-4">
<form method="post" action="{{ breadcrumbs.join("update-slack-conversation") }}">
<div class="mb-3">
<label for="channel-conversation-input" class="form-label">
Slack Channel
</label>
<select class="form-select" id="channel-conversation-input" name="conversation_id">
<option
disabled=""
{% if slack_data.conversation_id.is_none() %}selected=""{% endif %}
>
Select a channel
</option>
{% for conversation in slack_channels %}
{% if let slack_utils::Conversation::Channel(slack_channel) = conversation %}
<option
value="{{ slack_channel.id }}"
{% if slack_data.conversation_id == Some(slack_channel.id.to_owned()) %}
selected=""
{% endif %}
>
#{{ slack_channel.name }}
</option>
{% endif %}
{% endfor %}
</select>
</div>
<div class="mb-3">
<input type="hidden" name="csrf_token" value="{{ csrf_token }}">
<button class="btn btn-primary" type="submit">Save</button>
</div>
</form>
</section>
<hr>
<section class="mb-4">
<form
method="post"
action="{{ breadcrumbs.join("slack-auth/revoke") }}"
>
<input type="hidden" name="csrf_token" value="{{ csrf_token }}">
<button class="btn btn-danger" type="submit">Revoke Slack Access</button>
</form>
</section>
{% endif %}
{% endif %}
{% endblock %}

12
templates/channels.html
View file

@ -20,7 +20,6 @@
New Channel
</button>
<ul class="dropdown-menu">
<li><a class="dropdown-item disabled" href="#">Slack (coming soon)</a></li>
<li>
<form
method="post"
@ -31,7 +30,16 @@
<button class="dropdown-item" type="submit">Email</button>
</form>
</li>
<li><a class="dropdown-item disabled" href="#">SMS (coming soon)</a></li>
<li>
<form
method="post"
action="{{ breadcrumbs.join("../new-channel") }}"
>
<input type="hidden" name="csrf_token" value="{{ csrf_token }}">
<input type="hidden" name="channel_type" value="slack">
<button class="dropdown-item" type="submit">Slack</button>
</form>
</li>
</ul>
</div>
</div>