portainer/portainer

package endpoints

import (
    "net/http"

    "github.com/portainer/portainer/api/http/security"
    "github.com/portainer/portainer/api/internal/set"
    httperror "github.com/portainer/portainer/pkg/libhttp/error"
    "github.com/portainer/portainer/pkg/libhttp/response"
)

// @id AgentVersions
// @summary List agent versions
// @description List all agent versions based on the current user authorizations and query parameters.
// @description **Access policy**: restricted
// @tags endpoints
// @security ApiKeyAuth
// @security jwt
// @produce json
// @success 200 {array} string "List of available agent versions"
// @failure 500 "Server error"
// @router /endpoints/agent_versions [get]

func (handler *Handler) agentVersions(w http.ResponseWriter, r *http.Request) *httperror.HandlerError {
    endpointGroups, err := handler.DataStore.EndpointGroup().ReadAll()
    if err != nil {
        return httperror.InternalServerError("Unable to retrieve environment groups from the database", err)
    }

    endpoints, err := handler.DataStore.Endpoint().Endpoints()
    if err != nil {
        return httperror.InternalServerError("Unable to retrieve environments from the database", err)
    }

    securityContext, err := security.RetrieveRestrictedRequestContext(r)
    if err != nil {
        return httperror.InternalServerError("Unable to retrieve info from request context", err)
    }

    filteredEndpoints := security.FilterEndpoints(endpoints, endpointGroups, securityContext)

    agentVersions := set.Set[string]{}
    for _, endpoint := range filteredEndpoints {
        if endpoint.Agent.Version != "" {
            agentVersions[endpoint.Agent.Version] = true
        }
    }

    return response.JSON(w, agentVersions.Keys())
}