feat: add a very basic NodesAddressBookQuery

node_address_book_query.go

@@ -0,0 +1,91 @@
+package hedera
+
+import (
+    "net"
+
+	protobuf "github.com/golang/protobuf/proto"
+    "github.com/hashgraph/hedera-sdk-go/proto"
+)
+
+type NodeAddress struct {
+	IpAddress     net.IP
+	Portno        int32
+	Memo          string
+	RSA_PubKey    string
+	NodeId        int64
+	NodeAccountID AccountID
+	NodeCertHash  []byte
+}
+
+func nodeAddressFromProto(node proto.NodeAddress) NodeAddress {
+    return NodeAddress{
+        IpAddress: node.IpAddress,
+        Portno: node.Portno,
+        Memo: string(node.Memo),
+        RSA_PubKey: node.RSA_PubKey,
+        NodeId: node.NodeId,
+        NodeAccountID: accountIDFromProto(node.NodeAccountId),
+        NodeCertHash: node.NodeCertHash,
+    }
+}
+
+// NodeAddressBookQuery retrieves the address book
+type NodeAddressBookQuery struct {
+	QueryBuilder
+	pb *proto.FileGetContentsQuery
+}
+
+// NewNodeAddressBookQuery creates a FileContentsQuery builder for the address book and decodes the result
+func NewNodeAddressBookQuery() *NodeAddressBookQuery {
+	pb := &proto.FileGetContentsQuery{
+        Header: &proto.QueryHeader{},
+        FileID: FileIDForAddressBook().toProto(),
+    }
+
+	inner := newQueryBuilder(pb.Header)
+	inner.pb.Query = &proto.Query_FileGetContents{FileGetContents: pb}
+
+	return &NodeAddressBookQuery{inner, pb}
+}
+
+// Execute executes the NodeAddressBookQuery using the provided client. The value returned is a list of 
+// NodeAddress from the address bookk
+func (builder *NodeAddressBookQuery) Execute(client *Client) ([]NodeAddress, error) {
+	resp, err := builder.execute(client)
+	if err != nil {
+		return []NodeAddress{}, err
+	}
+
+    bytes := resp.GetFileGetContents().FileContents.Contents
+
+    var nodeAddressBook proto.NodeAddressBook
+    protobuf.Unmarshal(bytes, &nodeAddressBook)
+
+    book := make([]NodeAddress, len(nodeAddressBook.NodeAddress))
+
+    for i, node := range nodeAddressBook.NodeAddress {
+        book[i] = nodeAddressFromProto(*node)
+    }
+
+	return book, nil
+}
+
+//
+// The following _3_ must be copy-pasted at the bottom of **every** _query.go file
+// We override the embedded fluent setter methods to return the outer type
+//
+
+// SetMaxQueryPayment sets the maximum payment allowed for this Query.
+func (builder *NodeAddressBookQuery) SetMaxQueryPayment(maxPayment Hbar) *NodeAddressBookQuery {
+	return &NodeAddressBookQuery{*builder.QueryBuilder.SetMaxQueryPayment(maxPayment), builder.pb}
+}
+
+// SetQueryPayment sets the payment amount for this Query.
+func (builder *NodeAddressBookQuery) SetQueryPayment(paymentAmount Hbar) *NodeAddressBookQuery {
+	return &NodeAddressBookQuery{*builder.QueryBuilder.SetQueryPayment(paymentAmount), builder.pb}
+}
+
+// SetQueryPaymentTransaction sets the payment Transaction for this Query.
+func (builder *NodeAddressBookQuery) SetQueryPaymentTransaction(tx Transaction) *NodeAddressBookQuery {
+	return &NodeAddressBookQuery{*builder.QueryBuilder.SetQueryPaymentTransaction(tx), builder.pb}
+}