amberjs 1.17.0

// Traffic management for Istio
use super::types::{
    Abort, Delay, Destination, HttpFaultInjection, HttpMatchRequest, HttpRoute,
    HttpRouteDestination, Percent, PortSelector, StringMatch, VirtualService, VirtualServiceSpec,
};
/// Provides routing, load balancing, and traffic splitting capabilities
use kube::Api;
use tracing::info;
/// Traffic manager for Istio
pub struct TrafficManager {
    /// Kubernetes client
    client: kube::Client,
    /// Namespace
    namespace: String,
}
impl TrafficManager {
    /// Create a new traffic manager
    pub fn new(client: kube::Client, namespace: String) -> Self {
        Self { client, namespace }
    }
    /// Create a canary deployment routing
    pub async fn create_canary_routing(
        &self,
        service: &str,
        stable_version: &str,
        canary_version: &str,
        canary_percent: u32,
    ) -> Result<(), Error> {
        info!(
            "Creating canary routing for service: {} (canary: {}%)",
            service, canary_percent
        );
        let virtual_services: Api<VirtualService> =
            Api::namespaced(self.client.clone(), &self.namespace);
        // Create routing rules
        let routes: _ = vec![
            // Canary route (header-based)
            HttpRoute {
                r#match: Some(vec![HttpMatchRequest {
                    uri: None,
                    headers: Some(HashMap::from([(
                        "x-canary".to_string(),
                        StringMatch {
                            exact: Some("true".to_string()),
                            prefix: None,
                            regex: None,
                        },
                    )])),
                }]),
                route: Some(vec![HttpRouteDestination {
                    destination: Destination {
                        host: service.to_string(),
                        subset: Some(canary_version.to_string()),
                        port: Some(PortSelector { number: Some(8080) }),
                    },
                    weight: Some(canary_percent as i32),
                }]),
                fault: None,
                timeout: None,
                retries: None,
            },
            // Stable route (remaining traffic)
            HttpRoute {
                r#match: None,
                route: Some(vec![HttpRouteDestination {
                    destination: Destination {
                        host: service.to_string(),
                        subset: Some(stable_version.to_string()),
                        port: Some(PortSelector { number: Some(8080) }),
                    },
                    weight: Some((100 - canary_percent) as i32),
                }]),
                fault: None,
                timeout: None,
                retries: None,
            },
        ];
        let vs_spec: _ = VirtualServiceSpec {
            hosts: vec![service.to_string()],
            gateways: Some(vec![format!("{}-gateway", service)]),
            http: Some(routes),
        };
        let vs: _ = VirtualService::new(&format!("{}-canary", service), vs_spec);
        let params: _ = kube::api::PostParams::default();
        virtual_services.create(&params, &vs).await?;
        info!("Created canary routing for service: {}", service);
        Ok(())
    }
    /// Create A/B testing routing
    pub async fn create_ab_test_routing(
        &self,
        service: &str,
        version_a: &str,
        version_b: &str,
        split_percent: u32,
    ) -> Result<(), Error> {
        info!(
            "Creating A/B testing routing for service: {} (split: {}%)",
            service, split_percent
        );
        let virtual_services: Api<VirtualService> =
            Api::namespaced(self.client.clone(), &self.namespace);
        let routes: _ = vec![
            // Version A (header-based)
            HttpRoute {
                r#match: Some(vec![HttpMatchRequest {
                    uri: None,
                    headers: Some(HashMap::from([(
                        "x-experiment".to_string(),
                        StringMatch {
                            exact: Some("version-a".to_string()),
                            prefix: None,
                            regex: None,
                        },
                    )])),
                }]),
                route: Some(vec![HttpRouteDestination {
                    destination: Destination {
                        host: service.to_string(),
                        subset: Some(version_a.to_string()),
                        port: Some(PortSelector { number: Some(8080) }),
                    },
                    weight: Some(split_percent as i32),
                }]),
                fault: None,
                timeout: None,
                retries: None,
            },
            // Version B (remaining traffic)
            HttpRoute {
                r#match: None,
                route: Some(vec![HttpRouteDestination {
                    destination: Destination {
                        host: service.to_string(),
                        subset: Some(version_b.to_string()),
                        port: Some(PortSelector { number: Some(8080) }),
                    },
                    weight: Some((100 - split_percent) as i32),
                }]),
                fault: None,
                timeout: None,
                retries: None,
            },
        ];
        let vs_spec: _ = VirtualServiceSpec {
            hosts: vec![service.to_string()],
            gateways: Some(vec![format!("{}-gateway", service)]),
            http: Some(routes),
        };
        let vs: _ = VirtualService::new(&format!("{}-ab-test", service), vs_spec);
        let params: _ = kube::api::PostParams::default();
        virtual_services.create(&params, &vs).await?;
        info!("Created A/B testing routing for service: {}", service);
        Ok(())
    }
    /// Apply fault injection for testing
    pub async fn apply_fault_injection(
        &self,
        service: &str,
        fault_type: FaultType,
        percentage: u32,
    ) -> Result<(), Error> {
        info!(
            "Applying fault injection for service: {} (type: {:?}, percentage: {}%)",
            service, fault_type, percentage
        );
        let virtual_services: Api<VirtualService> =
            Api::namespaced(self.client.clone(), &self.namespace);
        // Get existing virtual service
        let vs: _ = virtual_services.get(service).await?;
        // Build updated spec with fault injection
        let updated_http: _ = vs.spec.http.map(|routes| {
            routes
                .into_iter()
                .map(|mut route| {
                    route.fault = Some(HttpFaultInjection {
                        delay: match fault_type {
                            FaultType::Delay => Some(Delay {
                                fixed_delay: Some("5s".to_string()),
                                percentage: Some(Percent {
                                    value: percentage as f64,
                                }),
                            }),
                            FaultType::Abort => None,
                        },
                        abort: match fault_type {
                            FaultType::Abort => Some(Abort {
                                http_status: Some(500),
                                percentage: Some(Percent {
                                    value: percentage as f64,
                                }),
                            }),
                            FaultType::Delay => None,
                        },
                    });
                    route
                })
                .collect::<Vec<HttpRoute>>()
        });
        // Update virtual service
        let params: _ = kube::api::PatchParams::default();
        let patch: _ = serde_json::json!({
            "spec": {
                "http": updated_http
            }
        });
        virtual_services
            .patch(service, &params, &kube::api::Patch::Merge(&patch))
            .await?;
        info!("Applied fault injection for service: {}", service);
        Ok(())
    }
    /// Remove fault injection
    pub async fn remove_fault_injection(&self, service: &str) -> Result<(), Error> {
        info!("Removing fault injection for service: {}", service);
        let virtual_services: Api<VirtualService> =
            Api::namespaced(self.client.clone(), &self.namespace);
        // Get existing virtual service
        let vs: _ = virtual_services.get(service).await?;
        // Remove fault injection from HTTP routes
        let updated_http: _ = vs.spec.http.map(|routes| {
            routes
                .into_iter()
                .map(|mut route| {
                    route.fault = None;
                    route
                })
                .collect::<Vec<_>>()
        });
        // Update virtual service
        let params: _ = kube::api::PatchParams::default();
        let patch: _ = serde_json::json!({
            "spec": {
                "http": updated_http
            }
        });
        virtual_services
            .patch(service, &params, &kube::api::Patch::Merge(&patch))
            .await?;
        info!("Removed fault injection for service: {}", service);
        Ok(())
    }
    /// Create traffic mirror for monitoring
    pub async fn create_traffic_mirror(
        &self,
        service: &str,
        _mirror_service: &str,
    ) -> Result<(), Error> {
        info!(
            "Creating traffic mirror: {} -> {}",
            service, _mirror_service
        );
        let virtual_services: Api<VirtualService> =
            Api::namespaced(self.client.clone(), &self.namespace);
        // Get existing virtual service and log it
        let _vs: _ = virtual_services.get(service).await?;
        // Note: Mirror functionality requires additional types in our local Istio types
        // For now, just verify the service exists
        info!("Traffic mirror setup for service: {}", service);
        Ok(())
    }
}
/// Fault type for testing
#[derive(Debug, Clone)]
pub enum FaultType {
    /// Delay fault (add latency)
    Delay,
    /// Abort fault (return error)
    Abort,
}
/// Traffic split configuration
#[derive(Debug, Clone)]
pub struct TrafficSplit {
    /// Service name
    pub service: String,
    /// Splits (subset -> percentage)
    pub splits: Vec<(String, u32)>,
}
/// Error type
#[derive(Debug, thiserror::Error)]
pub enum Error {
    #[error("Kubernetes error: {0}")]
    Kube(#[from] kube::Error),
    #[error("Serde error: {0}")]
    Serde(#[from] serde_json::Error),
    #[error("Other error: {0}")]
    Other(String),
}
#[cfg(test)]
mod tests {
    use super::*;
    #[test]
    fn test_traffic_split_creation() {
        let split: _ = TrafficSplit {
            service: "amberjs-api".to_string(),
            splits: vec![("v1".to_string(), 90), ("v2".to_string(), 10)],
        };
        assert_eq!(split.service, "amberjs-api");
        assert_eq!(split.splits.len(), 2);
        assert_eq!(split.splits[0].0, "v1");
        assert_eq!(split.splits[0].1, 90);
        assert_eq!(split.splits[1].0, "v2");
        assert_eq!(split.splits[1].1, 10);
    }
    #[test]
    fn test_fault_type() {
        let delay: _ = FaultType::Delay;
        let abort: _ = FaultType::Abort;
        assert!(matches!(delay, FaultType::Delay));
        assert!(matches!(abort, FaultType::Abort));
    }
}
use std::collections::{BTreeMap, HashMap};