connector

Documentation

Index

• type PrometheusConnector
  • func NewPrometheusConnector() *PrometheusConnector
  • func (c *PrometheusConnector) GetCapabilities(conf *metadata.Configuration) schema.CapabilitiesResponseMarshaler
  • func (c *PrometheusConnector) GetSchema(ctx context.Context, configuration *metadata.Configuration, _ *metadata.State) (schema.SchemaResponseMarshaler, error)
  • func (c *PrometheusConnector) HealthCheck(ctx context.Context, conf *metadata.Configuration, state *metadata.State) error
  • func (c *PrometheusConnector) Mutation(ctx context.Context, configuration *metadata.Configuration, ...) (*schema.MutationResponse, error)
  • func (c *PrometheusConnector) MutationExplain(ctx context.Context, conf *metadata.Configuration, state *metadata.State, ...) (*schema.ExplainResponse, error)
  • func (c *PrometheusConnector) ParseConfiguration(ctx context.Context, configurationDir string) (*metadata.Configuration, error)
  • func (c *PrometheusConnector) Query(ctx context.Context, configuration *metadata.Configuration, ...) (schema.QueryResponse, error)
  • func (c *PrometheusConnector) QueryExplain(ctx context.Context, conf *metadata.Configuration, state *metadata.State, ...) (*schema.ExplainResponse, error)
  • func (c *PrometheusConnector) TryInitState(ctx context.Context, conf *metadata.Configuration, ...) (*metadata.State, error)

Types

type PrometheusConnector

type PrometheusConnector struct {
	// contains filtered or unexported fields
}

PrometheusConnector implements a data connector for Prometheus API

func NewPrometheusConnector

func NewPrometheusConnector() *PrometheusConnector

NewPrometheusConnector creates a Prometheus connector instance

func (*PrometheusConnector) GetCapabilities

func (c *PrometheusConnector) GetCapabilities(conf *metadata.Configuration) schema.CapabilitiesResponseMarshaler

GetCapabilities get the connector's capabilities.

func (*PrometheusConnector) GetSchema

func (c *PrometheusConnector) GetSchema(ctx context.Context, configuration *metadata.Configuration, _ *metadata.State) (schema.SchemaResponseMarshaler, error)

GetSchema gets the connector's schema.

func (*PrometheusConnector) HealthCheck

func (c *PrometheusConnector) HealthCheck(ctx context.Context, conf *metadata.Configuration, state *metadata.State) error

HealthCheck checks the health of the connector.

For example, this function should check that the connector is able to reach its data source over the network.

Should throw if the check fails, else resolve.

func (*PrometheusConnector) Mutation

func (c *PrometheusConnector) Mutation(ctx context.Context, configuration *metadata.Configuration, state *metadata.State, request *schema.MutationRequest) (*schema.MutationResponse, error)

Mutation executes a mutation.

func (*PrometheusConnector) MutationExplain

func (c *PrometheusConnector) MutationExplain(ctx context.Context, conf *metadata.Configuration, state *metadata.State, request *schema.MutationRequest) (*schema.ExplainResponse, error)

MutationExplain explains a mutation by creating an execution plan.

func (*PrometheusConnector) ParseConfiguration

func (c *PrometheusConnector) ParseConfiguration(ctx context.Context, configurationDir string) (*metadata.Configuration, error)

ParseConfiguration validates the configuration files provided by the user, returning a validated 'Configuration', or throwing an error to prevents Connector startup.

func (*PrometheusConnector) Query

func (c *PrometheusConnector) Query(ctx context.Context, configuration *metadata.Configuration, state *metadata.State, request *schema.QueryRequest) (schema.QueryResponse, error)

Query executes a query.

func (*PrometheusConnector) QueryExplain

func (c *PrometheusConnector) QueryExplain(ctx context.Context, conf *metadata.Configuration, state *metadata.State, request *schema.QueryRequest) (*schema.ExplainResponse, error)

QueryExplain explains a query by creating an execution plan.

func (*PrometheusConnector) TryInitState

func (c *PrometheusConnector) TryInitState(ctx context.Context, conf *metadata.Configuration, metrics *connector.TelemetryState) (*metadata.State, error)

TryInitState initializes the connector's in-memory state.

For example, any connection pools, prepared queries, or other managed resources would be allocated here.

In addition, this function should register any connector-specific metrics with the metrics registry.