Use gitea forked macaron (#7933)

Signed-off-by: Tamal Saha <tamal@appscode.com>

vendor/github.com/couchbaselabs/go-couchbase/port_map.go

@@ -0,0 +1,84 @@
+package couchbase
+
+/*
+
+The goal here is to map a hostname:port combination to another hostname:port
+combination. The original hostname:port gives the name and regular KV port
+of a couchbase server. We want to determine the corresponding SSL KV port.
+
+To do this, we have a pool services structure, as obtained from
+the /pools/default/nodeServices API.
+
+For a fully configured two-node system, the structure may look like this:
+{"rev":32,"nodesExt":[
+	{"services":{"mgmt":8091,"mgmtSSL":18091,"fts":8094,"ftsSSL":18094,"indexAdmin":9100,"indexScan":9101,"indexHttp":9102,"indexStreamInit":9103,"indexStreamCatchup":9104,"indexStreamMaint":9105,"indexHttps":19102,"capiSSL":18092,"capi":8092,"kvSSL":11207,"projector":9999,"kv":11210,"moxi":11211},"hostname":"172.23.123.101"},
+	{"services":{"mgmt":8091,"mgmtSSL":18091,"indexAdmin":9100,"indexScan":9101,"indexHttp":9102,"indexStreamInit":9103,"indexStreamCatchup":9104,"indexStreamMaint":9105,"indexHttps":19102,"capiSSL":18092,"capi":8092,"kvSSL":11207,"projector":9999,"kv":11210,"moxi":11211,"n1ql":8093,"n1qlSSL":18093},"thisNode":true,"hostname":"172.23.123.102"}]}
+
+In this case, note the "hostname" fields, and the "kv" and "kvSSL" fields.
+
+For a single-node system, perhaps brought up for testing, the structure may look like this:
+{"rev":66,"nodesExt":[
+	{"services":{"mgmt":8091,"mgmtSSL":18091,"indexAdmin":9100,"indexScan":9101,"indexHttp":9102,"indexStreamInit":9103,"indexStreamCatchup":9104,"indexStreamMaint":9105,"indexHttps":19102,"kv":11210,"kvSSL":11207,"capi":8092,"capiSSL":18092,"projector":9999,"n1ql":8093,"n1qlSSL":18093},"thisNode":true}],"clusterCapabilitiesVer":[1,0],"clusterCapabilities":{"n1ql":["enhancedPreparedStatements"]}}
+
+Here, note that there is only a single entry in the "nodeExt" array and that it does not have a "hostname" field.
+We will assume that either hostname fields are present, or there is only a single node.
+*/
+
+import (
+	"encoding/json"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+func ParsePoolServices(jsonInput string) (*PoolServices, error) {
+	ps := &PoolServices{}
+	err := json.Unmarshal([]byte(jsonInput), ps)
+	return ps, err
+}
+
+func MapKVtoSSL(hostport string, ps *PoolServices) (string, error) {
+	colonIndex := strings.LastIndex(hostport, ":")
+	if colonIndex < 0 {
+		return "", fmt.Errorf("Unable to find host/port separator in %s", hostport)
+	}
+	host := hostport[0:colonIndex]
+	port := hostport[colonIndex+1:]
+	portInt, err := strconv.Atoi(port)
+	if err != nil {
+		return "", fmt.Errorf("Unable to parse host/port combination %s: %v", hostport, err)
+	}
+
+	var ns *NodeServices
+	if len(ps.NodesExt) == 1 {
+		ns = &(ps.NodesExt[0])
+	} else {
+		for i := range ps.NodesExt {
+			hostname := ps.NodesExt[i].Hostname
+			if len(hostname) == 0 {
+				// in case of missing hostname, check for 127.0.0.1
+				hostname = "127.0.0.1"
+			}
+			if hostname == host {
+				ns = &(ps.NodesExt[i])
+				break
+			}
+		}
+	}
+
+	if ns == nil {
+		return "", fmt.Errorf("Unable to parse host/port combination %s: no matching node found among %d", hostport, len(ps.NodesExt))
+	}
+	kv, found := ns.Services["kv"]
+	if !found {
+		return "", fmt.Errorf("Unable to map host/port combination %s: target host has no kv port listed", hostport)
+	}
+	kvSSL, found := ns.Services["kvSSL"]
+	if !found {
+		return "", fmt.Errorf("Unable to map host/port combination %s: target host has no kvSSL port listed", hostport)
+	}
+	if portInt != kv {
+		return "", fmt.Errorf("Unable to map hostport combination %s: expected port %d but found %d", hostport, portInt, kv)
+	}
+	return fmt.Sprintf("%s:%d", host, kvSSL), nil
+}