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package api
import (
"fmt"
"net/http"
"github.com/NebulousLabs/Sia/modules"
"github.com/NebulousLabs/Sia/types"
"github.com/julienschmidt/httprouter"
)
type (
// ExtendedHostDBEntry is an extension to modules.HostDBEntry that includes
// the string representation of the public key, otherwise presented as two
// fields, a string and a base64 encoded byte slice.
ExtendedHostDBEntry struct {
modules.HostDBEntry
PublicKeyString string `json:"publickeystring"`
}
// HostdbActiveGET lists active hosts on the network.
HostdbActiveGET struct {
Hosts []ExtendedHostDBEntry `json:"hosts"`
}
// HostdbAllGET lists all hosts that the renter is aware of.
HostdbAllGET struct {
Hosts []ExtendedHostDBEntry `json:"hosts"`
}
// HostdbHostsGET lists detailed statistics for a particular host, selected
// by pubkey.
HostdbHostsGET struct {
Entry ExtendedHostDBEntry `json:"entry"`
ScoreBreakdown modules.HostScoreBreakdown `json:"scorebreakdown"`
}
)
// hostdbActiveHandler handles the API call asking for the list of active
// hosts.
func (api *API) hostdbActiveHandler(w http.ResponseWriter, req *http.Request, _ httprouter.Params) {
var numHosts uint64
hosts := api.renter.ActiveHosts()
if req.FormValue("numhosts") == "" {
// Default value for 'numhosts' is all of them.
numHosts = uint64(len(hosts))
} else {
// Parse the value for 'numhosts'.
_, err := fmt.Sscan(req.FormValue("numhosts"), &numHosts)
if err != nil {
WriteError(w, Error{err.Error()}, http.StatusBadRequest)
return
}
// Catch any boundary errors.
if numHosts > uint64(len(hosts)) {
numHosts = uint64(len(hosts))
}
}
// Convert the entries into extended entries.
var extendedHosts []ExtendedHostDBEntry
for _, host := range hosts {
extendedHosts = append(extendedHosts, ExtendedHostDBEntry{
HostDBEntry: host,
PublicKeyString: host.PublicKey.String(),
})
}
WriteJSON(w, HostdbActiveGET{
Hosts: extendedHosts[:numHosts],
})
}
// hostdbAllHandler handles the API call asking for the list of all hosts.
func (api *API) hostdbAllHandler(w http.ResponseWriter, req *http.Request, _ httprouter.Params) {
// Get the set of all hosts and convert them into extended hosts.
hosts := api.renter.AllHosts()
var extendedHosts []ExtendedHostDBEntry
for _, host := range hosts {
extendedHosts = append(extendedHosts, ExtendedHostDBEntry{
HostDBEntry: host,
PublicKeyString: host.PublicKey.String(),
})
}
WriteJSON(w, HostdbAllGET{
Hosts: extendedHosts,
})
}
// hostdbHostsHandler handles the API call asking for a specific host,
// returning detailed informatino about that host.
func (api *API) hostdbHostsHandler(w http.ResponseWriter, req *http.Request, ps httprouter.Params) {
var pk types.SiaPublicKey
pk.LoadString(ps.ByName("pubkey"))
entry, exists := api.renter.Host(pk)
if !exists {
WriteError(w, Error{"requested host does not exist"}, http.StatusBadRequest)
return
}
breakdown := api.renter.ScoreBreakdown(entry)
// Extend the hostdb entry to have the public key string.
extendedEntry := ExtendedHostDBEntry{
HostDBEntry: entry,
PublicKeyString: entry.PublicKey.String(),
}
WriteJSON(w, HostdbHostsGET{
Entry: extendedEntry,
ScoreBreakdown: breakdown,
})
}
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