Coordinators methods for API

api/handlers.go

@@ -2,6 +2,7 @@ package api
 
 import (
 	"database/sql"
+	"errors"
 	"net/http"
 
 	"github.com/gin-gonic/gin"
@@ -23,6 +24,11 @@ const (
 	maxUint32 = 4294967295
 )
 
+var (
+	// ErrNillBidderAddr is used when a nil bidderAddr is received in the getCoordinator method
+	ErrNillBidderAddr = errors.New("biderAddr can not be nil")
+)
+
 func postAccountCreationAuth(c *gin.Context) {
 
 }
@@ -285,11 +291,49 @@ func getRecommendedFee(c *gin.Context) {
 }
 
 func getCoordinators(c *gin.Context) {
+	// Pagination
+	fromItem, order, limit, err := parsePagination(c)
+	if err != nil {
+		retBadReq(err, c)
+		return
+	}
 
+	// Fetch coordinators from historyDB
+	coordinators, pagination, err := h.GetCoordinators(fromItem, limit, order)
+	if err != nil {
+		retSQLErr(err, c)
+		return
+	}
+
+	// Build succesfull response
+	apiCoordinators := coordinatorsToAPI(coordinators)
+	c.JSON(http.StatusOK, &coordinatorsAPI{
+		Coordinators: apiCoordinators,
+		Pagination:   pagination,
+	})
 }
 
 func getCoordinator(c *gin.Context) {
+	// Get bidderAddr
+	const name = "bidderAddr"
+	bidderAddr, err := parseEthAddr(c, name)
 
+	if err != nil {
+		retBadReq(err, c)
+		return
+	} else if bidderAddr == nil {
+		retBadReq(ErrNillBidderAddr, c)
+		return
+	}
+
+	coordinator, err := h.GetCoordinator(*bidderAddr)
+	if err != nil {
+		retSQLErr(err, c)
+		return
+	}
+
+	apiCoordinator := coordinatorsToAPI([]historydb.HistoryCoordinator{*coordinator})
+	c.JSON(http.StatusOK, apiCoordinator[0])
 }
 
 func retSQLErr(err error, c *gin.Context) {