Struct SpannerConnection 

pub struct SpannerConnection {
    pub project_id: String,
    pub instance: String,
    pub database: String,
    pub auth: SpannerCredentials,
    pub max_sessions: usize,
    pub emulator_host: Option<String>,
}

Connection block shared by the Spanner source and sink configs (flattened into each connector config via #[serde(flatten)]).

Fields

project_id: String

GCP project ID that owns the Spanner instance.

instance: String

Spanner instance ID.

database: String

Database name within the instance.

auth: SpannerCredentials

Credentials. Defaults to Application Default Credentials.

max_sessions: usize

Upper bound on pooled Spanner sessions (server-side resources). Channels are sized automatically at one per 100 sessions.

emulator_host: Option<String>

Emulator endpoint override (host:port, e.g. localhost:9010). When set, the connection is plaintext and unauthenticated — exactly what SPANNER_EMULATOR_HOST does, but scoped to this connector so parallel pipelines/tests don’t race on a process-global env var. The env var is still honored when this field is unset.

Implementations

impl SpannerConnection

pub fn database_path(&self) -> String

Fully-qualified database path: projects/{project}/instances/{instance}/databases/{database}.

pub fn validate(&self) -> Result<(), FaucetError>

Validate the connection block at config-load time.

pub async fn connect(&self) -> Result<Client, FaucetError>

Build the data-plane Client. Honors emulator_host (and, when unset, the SPANNER_EMULATOR_HOST env var via the client default).

pub async fn connect_admin(&self) -> Result<AdminClient, FaucetError>

Build the admin (DDL) client. Same credential and emulator handling as connect.

Trait Implementations

impl Clone for SpannerConnection

fn clone(&self) -> SpannerConnection

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SpannerConnection

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SpannerConnection

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl JsonSchema for SpannerConnection

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

impl Serialize for SpannerConnection

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.