--- /dev/null
+
+using org.ldk.impl;
+using org.ldk.enums;
+using org.ldk.util;
+using System;
+
+namespace org { namespace ldk { namespace structs {
+
+
+
+/** An implementation of KVStore */
+public interface KVStoreInterface {
+ /**Returns the data stored for the given `primary_namespace`, `secondary_namespace`, and
+ * `key`.
+ *
+ * Returns an [`ErrorKind::NotFound`] if the given `key` could not be found in the given
+ * `primary_namespace` and `secondary_namespace`.
+ *
+ * [`ErrorKind::NotFound`]: io::ErrorKind::NotFound
+ */
+ Result_CVec_u8ZIOErrorZ read(string primary_namespace, string secondary_namespace, string key);
+ /**Persists the given data under the given `key`.
+ *
+ * Will create the given `primary_namespace` and `secondary_namespace` if not already present
+ * in the store.
+ */
+ Result_NoneIOErrorZ write(string primary_namespace, string secondary_namespace, string key, byte[] buf);
+ /**Removes any data that had previously been persisted under the given `key`.
+ *
+ * If the `lazy` flag is set to `true`, the backend implementation might choose to lazily
+ * remove the given `key` at some point in time after the method returns, e.g., as part of an
+ * eventual batch deletion of multiple keys. As a consequence, subsequent calls to
+ * [`KVStore::list`] might include the removed key until the changes are actually persisted.
+ *
+ * Note that while setting the `lazy` flag reduces the I/O burden of multiple subsequent
+ * `remove` calls, it also influences the atomicity guarantees as lazy `remove`s could
+ * potentially get lost on crash after the method returns. Therefore, this flag should only be
+ * set for `remove` operations that can be safely replayed at a later time.
+ *
+ * Returns successfully if no data will be stored for the given `primary_namespace`,
+ * `secondary_namespace`, and `key`, independently of whether it was present before its
+ * invokation or not.
+ */
+ Result_NoneIOErrorZ remove(string primary_namespace, string secondary_namespace, string key, bool lazy);
+ /**Returns a list of keys that are stored under the given `secondary_namespace` in
+ * `primary_namespace`.
+ *
+ * Returns the keys in arbitrary order, so users requiring a particular order need to sort the
+ * returned keys. Returns an empty list if `primary_namespace` or `secondary_namespace` is unknown.
+ */
+ Result_CVec_StrZIOErrorZ list(string primary_namespace, string secondary_namespace);
+}
+
+/**
+ * Provides an interface that allows storage and retrieval of persisted values that are associated
+ * with given keys.
+ *
+ * In order to avoid collisions the key space is segmented based on the given `primary_namespace`s
+ * and `secondary_namespace`s. Implementations of this trait are free to handle them in different
+ * ways, as long as per-namespace key uniqueness is asserted.
+ *
+ * Keys and namespaces are required to be valid ASCII strings in the range of
+ * [`KVSTORE_NAMESPACE_KEY_ALPHABET`] and no longer than [`KVSTORE_NAMESPACE_KEY_MAX_LEN`]. Empty
+ * primary namespaces and secondary namespaces (`\"\"`) are assumed to be a valid, however, if
+ * `primary_namespace` is empty, `secondary_namespace` is required to be empty, too. This means
+ * that concerns should always be separated by primary namespace first, before secondary
+ * namespaces are used. While the number of primary namespaces will be relatively small and is
+ * determined at compile time, there may be many secondary namespaces per primary namespace. Note
+ * that per-namespace uniqueness needs to also hold for keys *and* namespaces in any given
+ * namespace, i.e., conflicts between keys and equally named
+ * primary namespaces/secondary namespaces must be avoided.
+ *
+ * Note:** Users migrating custom persistence backends from the pre-v0.0.117 `KVStorePersister`
+ * interface can use a concatenation of `[{primary_namespace}/[{secondary_namespace}/]]{key}` to
+ * recover a `key` compatible with the data model previously assumed by `KVStorePersister::persist`.
+ */
+public class KVStore : CommonBase {
+ internal bindings.LDKKVStore bindings_instance;
+ internal long instance_idx;
+
+ internal KVStore(object _dummy, long ptr) : base(ptr) { bindings_instance = null; }
+ ~KVStore() {
+ if (ptr != 0) { bindings.KVStore_free(ptr); }
+ }
+
+ private class LDKKVStoreHolder { internal KVStore held; }
+ private class LDKKVStoreImpl : bindings.LDKKVStore {
+ internal LDKKVStoreImpl(KVStoreInterface arg, LDKKVStoreHolder impl_holder) { this.arg = arg; this.impl_holder = impl_holder; }
+ private KVStoreInterface arg;
+ private LDKKVStoreHolder impl_holder;
+ public long read(long _primary_namespace, long _secondary_namespace, long _key) {
+ string _primary_namespace_conv = InternalUtils.decodeString(_primary_namespace);
+ string _secondary_namespace_conv = InternalUtils.decodeString(_secondary_namespace);
+ string _key_conv = InternalUtils.decodeString(_key);
+ Result_CVec_u8ZIOErrorZ ret = arg.read(_primary_namespace_conv, _secondary_namespace_conv, _key_conv);
+ GC.KeepAlive(arg);
+ long result = ret == null ? 0 : ret.clone_ptr();
+ return result;
+ }
+ public long write(long _primary_namespace, long _secondary_namespace, long _key, long _buf) {
+ string _primary_namespace_conv = InternalUtils.decodeString(_primary_namespace);
+ string _secondary_namespace_conv = InternalUtils.decodeString(_secondary_namespace);
+ string _key_conv = InternalUtils.decodeString(_key);
+ byte[] _buf_conv = InternalUtils.decodeUint8Array(_buf);
+ Result_NoneIOErrorZ ret = arg.write(_primary_namespace_conv, _secondary_namespace_conv, _key_conv, _buf_conv);
+ GC.KeepAlive(arg);
+ long result = ret == null ? 0 : ret.clone_ptr();
+ return result;
+ }
+ public long remove(long _primary_namespace, long _secondary_namespace, long _key, bool _lazy) {
+ string _primary_namespace_conv = InternalUtils.decodeString(_primary_namespace);
+ string _secondary_namespace_conv = InternalUtils.decodeString(_secondary_namespace);
+ string _key_conv = InternalUtils.decodeString(_key);
+ Result_NoneIOErrorZ ret = arg.remove(_primary_namespace_conv, _secondary_namespace_conv, _key_conv, _lazy);
+ GC.KeepAlive(arg);
+ long result = ret == null ? 0 : ret.clone_ptr();
+ return result;
+ }
+ public long list(long _primary_namespace, long _secondary_namespace) {
+ string _primary_namespace_conv = InternalUtils.decodeString(_primary_namespace);
+ string _secondary_namespace_conv = InternalUtils.decodeString(_secondary_namespace);
+ Result_CVec_StrZIOErrorZ ret = arg.list(_primary_namespace_conv, _secondary_namespace_conv);
+ GC.KeepAlive(arg);
+ long result = ret == null ? 0 : ret.clone_ptr();
+ return result;
+ }
+ }
+
+ /** Creates a new instance of KVStore from a given implementation */
+ public static KVStore new_impl(KVStoreInterface arg) {
+ LDKKVStoreHolder impl_holder = new LDKKVStoreHolder();
+ LDKKVStoreImpl impl = new LDKKVStoreImpl(arg, impl_holder);
+ long[] ptr_idx = bindings.LDKKVStore_new(impl);
+
+ impl_holder.held = new KVStore(null, ptr_idx[0]);
+ impl_holder.held.instance_idx = ptr_idx[1];
+ impl_holder.held.bindings_instance = impl;
+ return impl_holder.held;
+ }
+
+ /**
+ * Returns the data stored for the given `primary_namespace`, `secondary_namespace`, and
+ * `key`.
+ *
+ * Returns an [`ErrorKind::NotFound`] if the given `key` could not be found in the given
+ * `primary_namespace` and `secondary_namespace`.
+ *
+ * [`ErrorKind::NotFound`]: io::ErrorKind::NotFound
+ */
+ public Result_CVec_u8ZIOErrorZ read(string primary_namespace, string secondary_namespace, string key) {
+ long ret = bindings.KVStore_read(this.ptr, InternalUtils.encodeString(primary_namespace), InternalUtils.encodeString(secondary_namespace), InternalUtils.encodeString(key));
+ GC.KeepAlive(this);
+ GC.KeepAlive(primary_namespace);
+ GC.KeepAlive(secondary_namespace);
+ GC.KeepAlive(key);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_CVec_u8ZIOErrorZ ret_hu_conv = Result_CVec_u8ZIOErrorZ.constr_from_ptr(ret);
+ return ret_hu_conv;
+ }
+
+ /**
+ * Persists the given data under the given `key`.
+ *
+ * Will create the given `primary_namespace` and `secondary_namespace` if not already present
+ * in the store.
+ */
+ public Result_NoneIOErrorZ write(string primary_namespace, string secondary_namespace, string key, byte[] buf) {
+ long ret = bindings.KVStore_write(this.ptr, InternalUtils.encodeString(primary_namespace), InternalUtils.encodeString(secondary_namespace), InternalUtils.encodeString(key), InternalUtils.encodeUint8Array(buf));
+ GC.KeepAlive(this);
+ GC.KeepAlive(primary_namespace);
+ GC.KeepAlive(secondary_namespace);
+ GC.KeepAlive(key);
+ GC.KeepAlive(buf);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_NoneIOErrorZ ret_hu_conv = Result_NoneIOErrorZ.constr_from_ptr(ret);
+ return ret_hu_conv;
+ }
+
+ /**
+ * Removes any data that had previously been persisted under the given `key`.
+ *
+ * If the `lazy` flag is set to `true`, the backend implementation might choose to lazily
+ * remove the given `key` at some point in time after the method returns, e.g., as part of an
+ * eventual batch deletion of multiple keys. As a consequence, subsequent calls to
+ * [`KVStore::list`] might include the removed key until the changes are actually persisted.
+ *
+ * Note that while setting the `lazy` flag reduces the I/O burden of multiple subsequent
+ * `remove` calls, it also influences the atomicity guarantees as lazy `remove`s could
+ * potentially get lost on crash after the method returns. Therefore, this flag should only be
+ * set for `remove` operations that can be safely replayed at a later time.
+ *
+ * Returns successfully if no data will be stored for the given `primary_namespace`,
+ * `secondary_namespace`, and `key`, independently of whether it was present before its
+ * invokation or not.
+ */
+ public Result_NoneIOErrorZ remove(string primary_namespace, string secondary_namespace, string key, bool lazy) {
+ long ret = bindings.KVStore_remove(this.ptr, InternalUtils.encodeString(primary_namespace), InternalUtils.encodeString(secondary_namespace), InternalUtils.encodeString(key), lazy);
+ GC.KeepAlive(this);
+ GC.KeepAlive(primary_namespace);
+ GC.KeepAlive(secondary_namespace);
+ GC.KeepAlive(key);
+ GC.KeepAlive(lazy);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_NoneIOErrorZ ret_hu_conv = Result_NoneIOErrorZ.constr_from_ptr(ret);
+ return ret_hu_conv;
+ }
+
+ /**
+ * Returns a list of keys that are stored under the given `secondary_namespace` in
+ * `primary_namespace`.
+ *
+ * Returns the keys in arbitrary order, so users requiring a particular order need to sort the
+ * returned keys. Returns an empty list if `primary_namespace` or `secondary_namespace` is unknown.
+ */
+ public Result_CVec_StrZIOErrorZ list(string primary_namespace, string secondary_namespace) {
+ long ret = bindings.KVStore_list(this.ptr, InternalUtils.encodeString(primary_namespace), InternalUtils.encodeString(secondary_namespace));
+ GC.KeepAlive(this);
+ GC.KeepAlive(primary_namespace);
+ GC.KeepAlive(secondary_namespace);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_CVec_StrZIOErrorZ ret_hu_conv = Result_CVec_StrZIOErrorZ.constr_from_ptr(ret);
+ return ret_hu_conv;
+ }
+
+}
+} } }