106 lines
2.3 KiB
Go
106 lines
2.3 KiB
Go
package memory
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import (
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"strings"
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"time"
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"github.com/patrickmn/go-cache"
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"github.com/trufflesecurity/trufflehog/v3/pkg/context"
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)
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const (
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expirationInterval = 12 * time.Hour
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purgeInterval = 13 * time.Hour
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defaultExpiration = cache.DefaultExpiration
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)
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// Cache is a wrapper around the go-cache library.
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type Cache struct {
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c *cache.Cache
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}
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// New constructs a new in-memory cache.
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func New() *Cache {
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c := cache.New(expirationInterval, purgeInterval)
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return &Cache{c: c}
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}
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// NewWithData constructs a new in-memory cache with existing data.
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func NewWithData(ctx context.Context, data []string) *Cache {
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ctx.Logger().V(3).Info("Loading cache", "num-items", len(data))
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items := make(map[string]cache.Item, len(data))
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for _, d := range data {
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items[d] = cache.Item{Object: d, Expiration: int64(defaultExpiration)}
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}
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c := cache.NewFrom(expirationInterval, purgeInterval, items)
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return &Cache{c: c}
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}
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// Set adds a key-value pair to the cache.
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func (c *Cache) Set(key, value string) {
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c.c.Set(key, value, defaultExpiration)
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}
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// Get returns the value for the given key.
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func (c *Cache) Get(key string) (string, bool) {
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res, ok := c.c.Get(key)
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if !ok {
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return "", ok
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}
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return res.(string), ok
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}
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// Exists returns true if the given key exists in the cache.
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func (c *Cache) Exists(key string) bool {
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_, ok := c.c.Get(key)
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return ok
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}
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// Delete removes the key-value pair from the cache.
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func (c *Cache) Delete(key string) {
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c.c.Delete(key)
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}
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// Clear removes all key-value pairs from the cache.
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func (c *Cache) Clear() {
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c.c.Flush()
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}
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// Count returns the number of key-value pairs in the cache.
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func (c *Cache) Count() int {
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return c.c.ItemCount()
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}
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// Keys returns all keys in the cache.
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func (c *Cache) Keys() []string {
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items := c.c.Items()
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res := make([]string, 0, len(items))
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for k := range items {
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res = append(res, k)
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}
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return res
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}
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// Values returns all values in the cache.
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func (c *Cache) Values() []string {
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items := c.c.Items()
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res := make([]string, 0, len(items))
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for _, v := range items {
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res = append(res, v.Object.(string))
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}
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return res
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}
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// Contents returns all key-value pairs in the cache encodes as a string.
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func (c *Cache) Contents() string {
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items := c.c.Items()
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res := make([]string, 0, len(items))
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for k := range items {
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res = append(res, k)
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}
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return strings.Join(res, ",")
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}
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