package metadataquery
import (
"context"
"github.com/modelcontextprotocol/go-sdk/mcp"
v1 "github.com/prometheus/client_golang/api/prometheus/v1"
)
// URL query parameters:
// limit=<number>: Maximum number of metrics to return.
// limit_per_metric=<number>: Maximum number of metadata to return per metric.
// metric=<string>: A metric name to filter metadata for. All metric metadata is retrieved if left empty.
// The following example returns two metrics. Note that the metric http_requests_total has more than one object in the list. At least one target has a value for HELP that do not match with the rest.
// curl -G http://localhost:9090/api/v1/metadata?limit=2
type MetricsMetadataQueryParams struct {
Limit string `json:"limit,omitzero" jsonschema:"<number>: Maximum number of metrics to return."`
Metric string `json:"metric,omitzero" jsonschema:"<string>: A metric name to filter metadata for. All metric metadata is retrieved if left empty."`
}
type MetricsMetadataQueryResult struct {
Data map[string][]v1.Metadata `json:"data" jsonschema:"Data consists of an object where each key is a metric name and each value is a list of unique metadata objects, as exposed for that metric name across all targets."`
}
func (q *metadataQuerier) MetricsMetadataQueryHandler(ctx context.Context, request *mcp.CallToolRequest, input *MetricsMetadataQueryParams) (*mcp.CallToolResult, *MetricsMetadataQueryResult, error) {
var (
result = &MetricsMetadataQueryResult{}
err error
)
if result.Data, err = q.API.Metadata(
ctx,
input.Metric,
input.Limit,
); err != nil {
return nil, nil, err
}
return nil, result, nil
}
