river-data-core 0.1.1

Common types & traits for the in the river-data platform
Documentation
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use reqwest::Client;
use std::time::Duration;
use uuid::Uuid;

use crate::error::RiverDataClientError;
use crate::models::{DataStream, IngestReading, IngestStatusEvent, RegisterStreamRequest};

pub struct RiverDataClient {
    http_client: Client,
    base_url: String,
    path_prefix: String,
    token: std::sync::RwLock<String>,
}

impl RiverDataClient {
    pub fn new(base_url: &str, token: &str) -> Result<Self, reqwest::Error> {
        Self::with_config(base_url, token, "/api/service", 60)
    }

    pub fn with_config(
        base_url: &str,
        token: &str,
        path_prefix: &str,
        timeout_secs: u64,
    ) -> Result<Self, reqwest::Error> {
        let http_client = Client::builder()
            .timeout(Duration::from_secs(timeout_secs))
            .build()?;

        Ok(Self {
            http_client,
            base_url: base_url.trim_end_matches('/').to_string(),
            path_prefix: path_prefix.to_string(),
            token: std::sync::RwLock::new(token.to_string()),
        })
    }

    pub fn set_token(&self, token: &str) {
        if let Ok(mut t) = self.token.write() {
            *t = token.to_string();
        }
    }

    fn current_token(&self) -> String {
        self.token.read().map(|t| t.clone()).unwrap_or_default()
    }

    fn url(&self, path: &str) -> String {
        format!("{}{}{}", self.base_url, self.path_prefix, path)
    }

    // ========================================================================
    // Stream Registration
    // ========================================================================

    pub async fn register_stream(
        &self,
        req: &RegisterStreamRequest,
    ) -> Result<DataStream, RiverDataClientError> {
        let resp = self
            .http_client
            .post(self.url("/streams/register"))
            .bearer_auth(self.current_token())
            .json(req)
            .send()
            .await
            .map_err(|e| RiverDataClientError::Api(format!("register_stream failed: {e}")))?;
        self.check_response(&resp)?;
        resp.json()
            .await
            .map_err(|e| RiverDataClientError::Api(format!("parse stream: {e}")))
    }

    pub async fn list_streams(
        &self,
        source_system: Option<&str>,
        is_active: Option<bool>,
    ) -> Result<Vec<DataStream>, RiverDataClientError> {
        const PAGE_SIZE: usize = 1000;
        let mut all_items: Vec<DataStream> = Vec::new();
        let mut offset: usize = 0;

        let mut filter = serde_json::Map::new();
        if let Some(ss) = source_system {
            filter.insert(
                "source_system".into(),
                serde_json::Value::String(ss.to_string()),
            );
        }
        if let Some(active) = is_active {
            filter.insert("is_active".into(), serde_json::Value::Bool(active));
        }
        let filter_str = serde_json::Value::Object(filter).to_string();

        loop {
            let end = offset + PAGE_SIZE - 1;
            let range_str = format!("[{offset},{end}]");

            let resp = self
                .http_client
                .get(self.url("/data_streams"))
                .query(&[
                    ("filter", filter_str.as_str()),
                    ("range", range_str.as_str()),
                    ("sort", r#"["id","ASC"]"#),
                ])
                .bearer_auth(self.current_token())
                .send()
                .await
                .map_err(|e| RiverDataClientError::Api(format!("list_streams failed: {e}")))?;
            self.check_response(&resp)?;

            let total = Self::parse_content_range_total(&resp);

            let page: Vec<DataStream> = resp
                .json()
                .await
                .map_err(|e| RiverDataClientError::Api(format!("parse streams: {e}")))?;

            let page_len = page.len();
            all_items.extend(page);

            match total {
                Some(t) if all_items.len() >= t => break,
                None => break,
                _ => {}
            }
            if page_len < PAGE_SIZE {
                break;
            }
            offset += PAGE_SIZE;
        }

        Ok(all_items)
    }

    fn parse_content_range_total(resp: &reqwest::Response) -> Option<usize> {
        let header = resp.headers().get("content-range")?.to_str().ok()?;
        let total_str = header.rsplit('/').next()?;
        total_str.parse().ok()
    }

    // ========================================================================
    // Data Ingestion
    // ========================================================================

    pub async fn ingest_readings(
        &self,
        stream_id: Uuid,
        readings: &[IngestReading],
    ) -> Result<u64, RiverDataClientError> {
        #[derive(serde::Deserialize)]
        struct IngestResponse {
            inserted: u64,
        }

        let body = serde_json::json!({
            "stream_id": stream_id,
            "readings": readings,
        });
        let resp = self
            .http_client
            .post(self.url("/ingest"))
            .bearer_auth(self.current_token())
            .json(&body)
            .send()
            .await
            .map_err(|e| RiverDataClientError::Api(format!("ingest_readings failed: {e}")))?;
        self.check_response(&resp)?;
        let result: IngestResponse = resp
            .json()
            .await
            .map_err(|e| RiverDataClientError::Api(format!("parse ingest response: {e}")))?;
        Ok(result.inserted)
    }

    pub async fn ingest_status_events(
        &self,
        stream_id: Uuid,
        events: &[IngestStatusEvent],
    ) -> Result<u64, RiverDataClientError> {
        #[derive(serde::Deserialize)]
        struct IngestResponse {
            inserted: u64,
        }

        let body = serde_json::json!({
            "stream_id": stream_id,
            "events": events,
        });
        let resp = self
            .http_client
            .post(self.url("/ingest/status_events"))
            .bearer_auth(self.current_token())
            .json(&body)
            .send()
            .await
            .map_err(|e| {
                RiverDataClientError::Api(format!("ingest_status_events failed: {e}"))
            })?;
        self.check_response(&resp)?;
        let result: IngestResponse = resp
            .json()
            .await
            .map_err(|e| RiverDataClientError::Api(format!("parse ingest response: {e}")))?;
        Ok(result.inserted)
    }

    // ========================================================================
    // Actions
    // ========================================================================

    pub async fn refresh_aggregates(&self, full: bool) -> Result<(), RiverDataClientError> {
        let body = serde_json::json!({ "full": full });
        let resp = self
            .http_client
            .post(self.url("/actions/refresh_aggregates"))
            .bearer_auth(self.current_token())
            .json(&body)
            .send()
            .await
            .map_err(|e| RiverDataClientError::Api(format!("refresh_aggregates failed: {e}")))?;
        self.check_response(&resp)?;
        Ok(())
    }

    pub async fn compute_derived(
        &self,
        site_timestamps: &[(Uuid, Vec<chrono::DateTime<chrono::Utc>>)],
    ) -> Result<(), RiverDataClientError> {
        let entries: Vec<serde_json::Value> = site_timestamps
            .iter()
            .map(|(site_id, timestamps)| {
                serde_json::json!({
                    "site_id": site_id,
                    "timestamps": timestamps,
                })
            })
            .collect();

        let body = serde_json::json!({ "site_timestamps": entries });
        let resp = self
            .http_client
            .post(self.url("/actions/compute_derived"))
            .bearer_auth(self.current_token())
            .json(&body)
            .send()
            .await
            .map_err(|e| RiverDataClientError::Api(format!("compute_derived failed: {e}")))?;
        self.check_response(&resp)?;
        Ok(())
    }

    // ========================================================================
    // Command Updates
    // ========================================================================

    pub async fn update_command(
        &self,
        command_id: Uuid,
        status: &str,
        result: Option<serde_json::Value>,
    ) -> Result<(), RiverDataClientError> {
        let body = serde_json::json!({ "status": status, "result": result });
        let resp = self
            .http_client
            .patch(self.url(&format!("/sync/commands/{command_id}")))
            .bearer_auth(self.current_token())
            .json(&body)
            .send()
            .await
            .map_err(|e| RiverDataClientError::Api(format!("update_command failed: {e}")))?;
        self.check_response(&resp)?;
        Ok(())
    }

    // ========================================================================
    // Sync Events
    // ========================================================================

    pub async fn create_sync_event(
        &self,
        event: &serde_json::Value,
    ) -> Result<serde_json::Value, RiverDataClientError> {
        let resp = self
            .http_client
            .post(self.url("/sync/events"))
            .bearer_auth(self.current_token())
            .json(event)
            .send()
            .await
            .map_err(|e| RiverDataClientError::Api(format!("create_sync_event failed: {e}")))?;
        self.check_response(&resp)?;
        resp.json()
            .await
            .map_err(|e| RiverDataClientError::Api(format!("parse sync_event: {e}")))
    }

    pub async fn update_sync_event(
        &self,
        event_id: Uuid,
        update: &serde_json::Value,
    ) -> Result<(), RiverDataClientError> {
        let resp = self
            .http_client
            .patch(self.url(&format!("/sync/events/{event_id}")))
            .bearer_auth(self.current_token())
            .json(update)
            .send()
            .await
            .map_err(|e| RiverDataClientError::Api(format!("update_sync_event failed: {e}")))?;
        self.check_response(&resp)?;
        Ok(())
    }

    // ========================================================================
    // Helpers
    // ========================================================================

    fn check_response(&self, resp: &reqwest::Response) -> Result<(), RiverDataClientError> {
        if !resp.status().is_success() {
            return Err(RiverDataClientError::Api(format!(
                "HTTP {} from {}",
                resp.status(),
                resp.url()
            )));
        }
        Ok(())
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_url_construction() {
        let client = RiverDataClient::new("http://localhost:3000", "tok").unwrap();
        assert_eq!(
            client.url("/data_streams"),
            "http://localhost:3000/api/service/data_streams"
        );
        assert_eq!(
            client.url("/ingest"),
            "http://localhost:3000/api/service/ingest"
        );
    }

    #[test]
    fn test_url_strips_trailing_slash() {
        let client = RiverDataClient::new("http://localhost:3000/", "tok").unwrap();
        assert_eq!(
            client.url("/data_streams"),
            "http://localhost:3000/api/service/data_streams"
        );
    }

    #[test]
    fn test_parse_content_range_total() {
        let resp = http::Response::builder()
            .header("content-range", "data_streams 0-999/29400")
            .body("")
            .unwrap();
        let resp: reqwest::Response = resp.into();
        assert_eq!(
            RiverDataClient::parse_content_range_total(&resp),
            Some(29400)
        );

        let resp = http::Response::builder()
            .header("content-range", "data_streams 0-21/22")
            .body("")
            .unwrap();
        let resp: reqwest::Response = resp.into();
        assert_eq!(RiverDataClient::parse_content_range_total(&resp), Some(22));

        let resp = http::Response::builder().body("").unwrap();
        let resp: reqwest::Response = resp.into();
        assert_eq!(RiverDataClient::parse_content_range_total(&resp), None);
    }

    #[test]
    fn test_token_set_and_get() {
        let client = RiverDataClient::new("http://localhost:3000", "initial").unwrap();
        assert_eq!(client.current_token(), "initial");

        client.set_token("rotated");
        assert_eq!(client.current_token(), "rotated");
    }

    #[test]
    fn test_concurrent_token_access() {
        use std::sync::Arc;
        let client = Arc::new(RiverDataClient::new("http://localhost:3000", "v1").unwrap());

        let handles: Vec<_> = (0..10)
            .map(|i| {
                let c = client.clone();
                std::thread::spawn(move || {
                    c.set_token(&format!("v{i}"));
                    let _ = c.current_token();
                })
            })
            .collect();

        for h in handles {
            h.join().unwrap();
        }

        let token = client.current_token();
        assert!(token.starts_with('v'), "unexpected token: {token}");
    }
}