85 lines
1.8 KiB
Go
85 lines
1.8 KiB
Go
package router
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import "errors"
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var (
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// DefaultRouter returns default micro router
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DefaultTable = NewTable()
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// ErrRouteNotFound is returned when no route was found
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ErrRouteNotFound = errors.New("route not found")
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// ErrDuplicateRoute is return when route already exists
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ErrDuplicateRoute = errors.New("duplicate route")
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)
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// Table is routing table
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type Table interface {
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// Add adds new route to the table
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Add(*Entry) error
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// Remove removes route from the table
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Remove(*Entry) error
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// Update updates route in the table
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Update(*Entry) error
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// Lookup looks up routes in the table
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Lookup(Query) ([]*Entry, error)
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// Size returns the size of the table
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Size() int
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// String prints the routing table
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String() string
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}
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// Entry is micro network routing table entry
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type Entry struct {
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// DestAddr is destination address
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DestAddr string
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// NetID is micro network ID
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NetID string
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// Hop is the next route hop
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Hop Router
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// Metric is route cost metric
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Metric int
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}
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// table is routing table
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// It maps service name to routes
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type table struct {
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// m stores routing table map
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m map[string][]Entry
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}
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// NewTable creates new routing table and returns it
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func NewTable() Table {
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return &table{
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m: make(map[string][]Entry),
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}
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}
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// Add adds new routing entry
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func (t *table) Add(e *Entry) error {
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return nil
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}
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// Remove removes entry from the routing table
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func (t *table) Remove(e *Entry) error {
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return nil
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}
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// Update updates routin entry
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func (t *table) Update(e *Entry) error {
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return nil
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}
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// Lookup looks up entry in the routing table
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func (t *table) Lookup(q Query) ([]*Entry, error) {
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return nil, nil
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}
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// Size returns the size of the routing table
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func (t *table) Size() int {
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return len(t.m)
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}
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// String returns text representation of routing table
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func (t *table) String() string {
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return ""
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}
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