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twiq-light: Fix to use FirestoreStorage
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,262 +1,67 @@ | ||
| use std::{ | ||
| collections::{HashMap, VecDeque}, | ||
| path::PathBuf, | ||
| }; | ||
|
|
||
| use anyhow::bail; | ||
| use google_cloud_auth::{Credential, CredentialConfig}; | ||
| use tonic::{ | ||
| codegen::InterceptedService, | ||
| metadata::AsciiMetadataValue, | ||
| transport::{Channel, ClientTlsConfig, Endpoint}, | ||
| Code, Request, Status, | ||
| }; | ||
| use std::collections::VecDeque; | ||
|
|
||
| use crate::{ | ||
| domain::ScheduledTweet, | ||
| google::firestore::v1::{ | ||
| firestore_client::FirestoreClient, precondition::ConditionType, value::ValueType, | ||
| write::Operation, CommitRequest, Document, GetDocumentRequest, Precondition, Value, Write, | ||
| }, | ||
| storage::{firestore::FirestoreStorage, Storage}, | ||
| token::Token, | ||
| }; | ||
|
|
||
| #[derive(Debug)] | ||
| pub struct TweetQueueStore { | ||
| project_id: String, | ||
| google_application_credentials: Option<PathBuf>, | ||
| storage: FirestoreStorage, | ||
| } | ||
|
|
||
| type MyInterceptor = Box<dyn Fn(Request<()>) -> Result<Request<()>, Status>>; | ||
| type Client = FirestoreClient<InterceptedService<Channel, MyInterceptor>>; | ||
|
|
||
| impl TweetQueueStore { | ||
| const DATABASE_ID: &str = "(default)"; | ||
| const COLLECTION_ID: &str = "twiq-light"; | ||
| const DOCUMENT_ID: &str = "queue"; | ||
| const FIELD_NAME: &str = "data"; | ||
| const QUEUE_DOCUMENT_ID: &str = "queue"; | ||
| const TOKEN_DOCUMENT_ID: &str = "token"; | ||
|
|
||
| pub fn new(project_id: String, google_application_credentials: Option<String>) -> Self { | ||
| Self { | ||
| pub async fn new( | ||
| project_id: String, | ||
| google_application_credentials: Option<String>, | ||
| ) -> anyhow::Result<Self> { | ||
| let storage = FirestoreStorage::new( | ||
| google_application_credentials, | ||
| project_id, | ||
| google_application_credentials: google_application_credentials.map(PathBuf::from), | ||
| } | ||
| Self::DATABASE_ID.to_owned(), | ||
| Self::COLLECTION_ID.to_owned(), | ||
| ) | ||
| .await?; | ||
| Ok(Self { storage }) | ||
| } | ||
|
|
||
| pub async fn read_all(&self) -> anyhow::Result<VecDeque<ScheduledTweet>> { | ||
| let mut client = self.get_client().await?; | ||
| let document_path = self.get_document_path()?; | ||
| let document = Self::get_document(&mut client, &document_path).await?; | ||
| Ok(match document { | ||
| Some(doc) => serde_json::from_str(Self::data_from_document(&doc))?, | ||
| let data = self | ||
| .storage | ||
| .get_item(Self::QUEUE_DOCUMENT_ID.to_owned()) | ||
| .await?; | ||
| Ok(match data { | ||
| Some(d) => serde_json::from_str(&d)?, | ||
| None => VecDeque::default(), | ||
| }) | ||
| } | ||
|
|
||
| pub async fn read_token(&self) -> anyhow::Result<Option<Token>> { | ||
| let mut client = self.get_client().await?; | ||
| let document_path = self.get_token_document_path()?; | ||
| let document = Self::get_document(&mut client, &document_path).await?; | ||
| Ok(match document { | ||
| Some(doc) => Some(serde_json::from_str(Self::data_from_document(&doc))?), | ||
| let data = self | ||
| .storage | ||
| .get_item(Self::TOKEN_DOCUMENT_ID.to_owned()) | ||
| .await?; | ||
| Ok(match data { | ||
| Some(d) => Some(serde_json::from_str(&d)?), | ||
| None => None, | ||
| }) | ||
| } | ||
|
|
||
| pub async fn write_token(&self, token: &Token) -> anyhow::Result<()> { | ||
| let s = token.to_string(); | ||
|
|
||
| // <https://cloud.google.com/firestore/quotas> | ||
| // Maximum size of a field value: 1 MiB - 89 bytes (1,048,487 bytes) | ||
| let byte_length = s.len(); | ||
| if byte_length > 1_000_000 { | ||
| bail!("Maximum field size exceeded"); | ||
| } | ||
|
|
||
| let mut client = self.get_client().await?; | ||
| let database_path = self.get_database_path()?; | ||
| let document_path = self.get_token_document_path()?; | ||
| let document = Self::get_document(&mut client, &document_path).await?; | ||
| let condition_type = match document { | ||
| Some(doc) => { | ||
| let update_time = doc.update_time.expect("output contains update_time"); | ||
| ConditionType::UpdateTime(update_time) | ||
| } | ||
| None => ConditionType::Exists(false), | ||
| }; | ||
| let document = Self::document_from_data(document_path, s); | ||
| let writes = vec![Write { | ||
| update_mask: None, | ||
| update_transforms: vec![], | ||
| current_document: Some(Precondition { | ||
| condition_type: Some(condition_type), | ||
| }), | ||
| operation: Some(Operation::Update(document)), | ||
| }]; | ||
| client | ||
| .commit(CommitRequest { | ||
| database: database_path, | ||
| writes, | ||
| transaction: vec![], | ||
| }) | ||
| .await?; | ||
| Ok(()) | ||
| self.storage | ||
| .set_item(Self::TOKEN_DOCUMENT_ID.to_owned(), token.to_string()) | ||
| .await | ||
| } | ||
|
|
||
| pub async fn write_all(&self, data: &VecDeque<ScheduledTweet>) -> anyhow::Result<()> { | ||
| let s = serde_json::to_string(&data)?; | ||
| // <https://cloud.google.com/firestore/quotas> | ||
| // Maximum size of a field value: 1 MiB - 89 bytes (1,048,487 bytes) | ||
| let byte_length = s.len(); | ||
| if byte_length > 1_000_000 { | ||
| bail!("Maximum field size exceeded"); | ||
| } | ||
|
|
||
| let mut client = self.get_client().await?; | ||
| let database_path = self.get_database_path()?; | ||
| let document_path = self.get_document_path()?; | ||
| let document = Self::get_document(&mut client, &document_path).await?; | ||
| let condition_type = match document { | ||
| Some(doc) => { | ||
| let update_time = doc.update_time.expect("output contains update_time"); | ||
| ConditionType::UpdateTime(update_time) | ||
| } | ||
| None => ConditionType::Exists(false), | ||
| }; | ||
| let document = Self::document_from_data(document_path, s); | ||
| let writes = vec![Write { | ||
| update_mask: None, | ||
| update_transforms: vec![], | ||
| current_document: Some(Precondition { | ||
| condition_type: Some(condition_type), | ||
| }), | ||
| operation: Some(Operation::Update(document)), | ||
| }]; | ||
| client | ||
| .commit(CommitRequest { | ||
| database: database_path, | ||
| writes, | ||
| transaction: vec![], | ||
| }) | ||
| .await?; | ||
| Ok(()) | ||
| } | ||
|
|
||
| fn data_from_document(document: &Document) -> &str { | ||
| let value = document | ||
| .fields | ||
| .get(Self::FIELD_NAME) | ||
| .expect("field not found"); | ||
| match value.value_type.as_ref() { | ||
| Some(value_type) => match value_type { | ||
| ValueType::StringValue(s) => s.as_str(), | ||
| _ => unreachable!("value_type is not string"), | ||
| }, | ||
| None => unreachable!(), | ||
| } | ||
| } | ||
|
|
||
| fn document_from_data(document_path: String, s: String) -> Document { | ||
| Document { | ||
| name: document_path, | ||
| fields: { | ||
| let mut fields = HashMap::new(); | ||
| fields.insert( | ||
| Self::FIELD_NAME.to_owned(), | ||
| Value { | ||
| value_type: Some(ValueType::StringValue(s)), | ||
| }, | ||
| ); | ||
| fields | ||
| }, | ||
| create_time: None, | ||
| update_time: None, | ||
| } | ||
| } | ||
|
|
||
| async fn get_client(&self) -> anyhow::Result<Client> { | ||
| let config = CredentialConfig::builder() | ||
| .scopes(vec!["https://www.googleapis.com/auth/cloud-platform".into()]) | ||
| .build()?; | ||
| let credential = match self.google_application_credentials.as_ref() { | ||
| Some(file_path) => Credential::find(file_path, config).await?, | ||
| None => { | ||
| // GOOGLE_APPLICATION_CREDENTIALS environment variable | ||
| Credential::find_default(config).await? | ||
| } | ||
| }; | ||
| let channel = Endpoint::from_static("https://firestore.googleapis.com") | ||
| .tls_config(ClientTlsConfig::new().domain_name("firestore.googleapis.com"))? | ||
| .connect() | ||
| .await?; | ||
| let access_token = credential.access_token().await?; | ||
| let mut metadata_value = | ||
| AsciiMetadataValue::try_from(format!("Bearer {}", access_token.value))?; | ||
| metadata_value.set_sensitive(true); | ||
| let client: FirestoreClient<InterceptedService<Channel, MyInterceptor>> = | ||
| FirestoreClient::with_interceptor( | ||
| channel, | ||
| Box::new(move |mut request: Request<()>| { | ||
| request | ||
| .metadata_mut() | ||
| .insert("authorization", metadata_value.clone()); | ||
| Ok(request) | ||
| }), | ||
| ); | ||
| Ok(client) | ||
| } | ||
|
|
||
| fn get_database_path(&self) -> anyhow::Result<String> { | ||
| let database_path = format!( | ||
| "projects/{}/databases/{}", | ||
| self.project_id, | ||
| Self::DATABASE_ID | ||
| ); | ||
| Ok(database_path) | ||
| } | ||
|
|
||
| async fn get_document( | ||
| client: &mut Client, | ||
| document_path: &str, | ||
| ) -> anyhow::Result<Option<Document>> { | ||
| let document = client | ||
| .get_document(GetDocumentRequest { | ||
| name: document_path.to_owned(), | ||
| mask: None, | ||
| consistency_selector: None, | ||
| }) | ||
| self.storage | ||
| .set_item(Self::QUEUE_DOCUMENT_ID.to_owned(), s) | ||
| .await | ||
| .map(|response| Some(response.into_inner())) | ||
| .or_else(|status| { | ||
| if matches!(status.code(), Code::NotFound) { | ||
| Ok(None) | ||
| } else { | ||
| Err(status) | ||
| } | ||
| })?; | ||
| Ok(document) | ||
| } | ||
|
|
||
| fn get_document_path(&self) -> anyhow::Result<String> { | ||
| let database_path = self.get_database_path()?; | ||
| let document_path = format!( | ||
| "{}/documents/{}/{}", | ||
| database_path, | ||
| Self::COLLECTION_ID, | ||
| Self::DOCUMENT_ID | ||
| ); | ||
| Ok(document_path) | ||
| } | ||
|
|
||
| fn get_token_document_path(&self) -> anyhow::Result<String> { | ||
| let database_path = self.get_database_path()?; | ||
| let document_path = format!( | ||
| "{}/documents/{}/{}", | ||
| database_path, | ||
| Self::COLLECTION_ID, | ||
| Self::TOKEN_DOCUMENT_ID | ||
| ); | ||
| Ok(document_path) | ||
| } | ||
| } |
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