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using System;
using System.Collections.Generic;
using System.Linq;
using EventStore.ClientAPI.Common.Utils;
using Newtonsoft.Json.Linq;
namespace EventStore.ClientAPI
{
/// <summary>
/// Builder for <see cref="StreamMetadata"/>.
/// </summary>
public class StreamMetadataBuilder
{
private long? _maxCount;
private TimeSpan? _maxAge;
private long? _truncateBefore;
private TimeSpan? _cacheControl;
private string[] _aclRead;
private string[] _aclWrite;
private string[] _aclDelete;
private string[] _aclMetaRead;
private string[] _aclMetaWrite;
private readonly IDictionary<string, JToken> _customMetadata;
/// <summary>
/// All existing custom property keys.
/// </summary>
/// <remarks>
/// Returns a copy of the key list so it's safe to enumerate whilst removing custom properties.
/// </remarks>
public IEnumerable<string> CustomPropertyKeys => _customMetadata.Keys.ToList();
internal StreamMetadataBuilder(
long? maxCount = null,
TimeSpan? maxAge = null,
long? truncateBefore = null,
TimeSpan? cacheControl = null,
string[] aclRead = null,
string[] aclWrite = null,
string[] aclDelete = null,
string[] aclMetaRead = null,
string[] aclMetaWrite = null,
IDictionary<string, JToken> customMetadata = null)
{
_maxCount = maxCount;
_maxAge = maxAge;
_truncateBefore = truncateBefore;
_cacheControl = cacheControl;
_aclRead = aclRead;
_aclWrite = aclWrite;
_aclDelete = aclDelete;
_aclMetaRead = aclMetaRead;
_aclMetaWrite = aclMetaWrite;
_customMetadata = customMetadata == null ? new Dictionary<string, JToken>() : new Dictionary<string, JToken>(customMetadata);
}
/// <summary>
/// Builds a <see cref="StreamMetadata"/> from a <see cref="StreamMetadataBuilder"/>.
/// </summary>
/// <param name="builder">A <see cref="StreamMetadataBuilder"/>.</param>
/// <returns>A <see cref="StreamMetadata"/>.</returns>
public static implicit operator StreamMetadata(StreamMetadataBuilder builder)
{
return builder.Build();
}
/// <summary>
/// Builds a <see cref="StreamMetadata"/> from a <see cref="StreamMetadataBuilder"/>.
/// </summary>
public StreamMetadata Build()
{
var acl = this._aclRead == null
&& this._aclWrite == null
&& this._aclDelete == null
&& this._aclMetaRead == null
&& this._aclMetaWrite == null
? null
: new StreamAcl(this._aclRead, this._aclWrite, this._aclDelete, this._aclMetaRead, this._aclMetaWrite);
return new StreamMetadata(this._maxCount, this._maxAge, this._truncateBefore, this._cacheControl, acl, this._customMetadata);
}
/// <summary>
/// Sets the maximum number of events allowed in the stream.
/// </summary>
/// <param name="maxCount">The maximum number of events allowed in the stream.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetMaxCount(long maxCount)
{
Ensure.Positive(maxCount, "maxCount");
_maxCount = maxCount;
return this;
}
/// <summary>
/// Sets the maximum age of events allowed in the stream.
/// </summary>
/// <param name="maxAge">The maximum age of events allowed in the stream.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetMaxAge(TimeSpan maxAge)
{
Ensure.Positive(maxAge.Ticks, "maxAge");
_maxAge = maxAge;
return this;
}
/// <summary>
/// Sets the event number from which previous events can be scavenged.
/// </summary>
/// <param name="truncateBefore">The event number from which previous events can be scavenged.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetTruncateBefore(long truncateBefore)
{
Ensure.Nonnegative(truncateBefore, "truncateBefore");
_truncateBefore = truncateBefore;
return this;
}
/// <summary>
/// Sets the amount of time for which the stream head is cachable.
/// </summary>
/// <param name="cacheControl">The amount of time for which the stream head is cachable.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetCacheControl(TimeSpan cacheControl)
{
Ensure.Positive(cacheControl.Ticks, "cacheControl");
_cacheControl = cacheControl;
return this;
}
/// <summary>
/// Sets a single role name with read permission for the stream.
/// </summary>
/// <param name="role">Role name.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetReadRole(string role)
{
_aclRead = role == null ? null : new[] { role };
return this;
}
/// <summary>
/// Sets role names with read permission for the stream.
/// </summary>
/// <param name="roles">Role names.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetReadRoles(string[] roles)
{
_aclRead = roles;
return this;
}
/// <summary>
/// Sets a single role name with write permission for the stream.
/// </summary>
/// <param name="role">Role name.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetWriteRole(string role)
{
_aclWrite = role == null ? null : new[] { role };
return this;
}
/// <summary>
/// Sets role names with write permission for the stream.
/// </summary>
/// <param name="roles">Role names.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetWriteRoles(string[] roles)
{
_aclWrite = roles;
return this;
}
/// <summary>
/// Sets a single role name with delete permission for the stream.
/// </summary>
/// <param name="role">Role name.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetDeleteRole(string role)
{
_aclDelete = role == null ? null : new[] { role };
return this;
}
/// <summary>
/// Sets role names with delete permission for the stream.
/// </summary>
/// <param name="roles">Role names.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetDeleteRoles(string[] roles)
{
_aclDelete = roles;
return this;
}
/// <summary>
/// Sets a single role name with metadata read permission for the stream.
/// </summary>
/// <param name="role">Role name.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetMetadataReadRole(string role)
{
_aclMetaRead = role == null ? null : new[] { role };
return this;
}
/// <summary>
/// Sets role names with metadata read permission for the stream.
/// </summary>
/// <param name="roles">Role names.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetMetadataReadRoles(string[] roles)
{
_aclMetaRead = roles;
return this;
}
/// <summary>
/// Sets a single role name with metadata write permission for the stream.
/// </summary>
/// <param name="role">Role name.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetMetadataWriteRole(string role)
{
_aclMetaWrite = role == null ? null : new[] { role };
return this;
}
/// <summary>
/// Sets role names with metadata write permission for the stream.
/// </summary>
/// <param name="roles">Role names.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetMetadataWriteRoles(string[] roles)
{
_aclMetaWrite = roles;
return this;
}
/// <summary>
/// Sets a custom metadata property.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="value">The value.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetCustomProperty(string key, string value)
{
_customMetadata[key] = value;
return this;
}
/// <summary>
/// Sets a custom metadata property.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="value">The value.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetCustomProperty(string key, int value)
{
_customMetadata[key] = value;
return this;
}
/// <summary>
/// Sets a custom metadata property.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="value">The value.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetCustomProperty(string key, int? value)
{
_customMetadata[key] = value;
return this;
}
/// <summary>
/// Sets a custom metadata property.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="value">The value.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetCustomProperty(string key, long value)
{
_customMetadata[key] = value;
return this;
}
/// <summary>
/// Sets a custom metadata property.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="value">The value.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetCustomProperty(string key, long? value)
{
_customMetadata[key] = value;
return this;
}
/// <summary>
/// Sets a custom metadata property.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="value">The value.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetCustomProperty(string key, float value)
{
_customMetadata[key] = value;
return this;
}
/// <summary>
/// Sets a custom metadata property.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="value">The value.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetCustomProperty(string key, float? value)
{
_customMetadata[key] = value;
return this;
}
/// <summary>
/// Sets a custom metadata property.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="value">The value.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetCustomProperty(string key, double value)
{
_customMetadata[key] = value;
return this;
}
/// <summary>
/// Sets a custom metadata property.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="value">The value.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetCustomProperty(string key, double? value)
{
_customMetadata[key] = value;
return this;
}
/// <summary>
/// Sets a custom metadata property.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="value">The value.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetCustomProperty(string key, decimal value)
{
_customMetadata[key] = value;
return this;
}
/// <summary>
/// Sets a custom metadata property.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="value">The value.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetCustomProperty(string key, decimal? value)
{
_customMetadata[key] = value;
return this;
}
/// <summary>
/// Sets a custom metadata property.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="value">The value.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetCustomProperty(string key, bool value)
{
_customMetadata[key] = value;
return this;
}
/// <summary>
/// Sets a custom metadata property.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="value">The value.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetCustomProperty(string key, bool? value)
{
_customMetadata[key] = value;
return this;
}
/// <summary>
/// Sets a custom metadata property to a string of raw JSON.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="rawJson">The value.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder SetCustomPropertyWithValueAsRawJsonString(string key, string rawJson)
{
_customMetadata[key] = JToken.Parse(rawJson);
return this;
}
/// <summary>
/// Removes a custom property.
/// </summary>
/// <param name="key">The key.</param>
/// <returns>The builder.</returns>
public StreamMetadataBuilder RemoveCustomProperty(string key)
{
_customMetadata.Remove(key);
return this;
}
}
}