Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

feat: Update in-process resolver to support flag metadata #305 #309

Open
wants to merge 6 commits into
base: main
Choose a base branch
from
Open

feat: Update in-process resolver to support flag metadata #305 #309

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
6 commits
Select commit Hold shift + click to select a range
79062cb
Update in-process resolver to support flag metadata #305
chrfwow Jan 15, 2025
934e580
fixup! Update in-process resolver to support flag metadata #305
chrfwow Jan 15, 2025
0ff89cd
fixup! Update in-process resolver to support flag metadata #305
chrfwow Jan 15, 2025
8ec5889
fixup! Update in-process resolver to support flag metadata #305
chrfwow Jan 16, 2025
55609f5
fixup! Update in-process resolver to support flag metadata #305
chrfwow Jan 16, 2025
6b5210d
fixup! Update in-process resolver to support flag metadata #305
chrfwow Jan 17, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
10 changes: 10 additions & 0 deletions .fleet/run.json
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,10 @@
{
"configurations": [
{
"type": "command",
"name": "debug",
"program": "$PROJECT_DIR$\\test\\OpenFeature.Contrib.Providers.Flagd.Test\\bin\\Debug\\net6.0\\testhost.exe",
"args": []
}
]
}
2 changes: 1 addition & 1 deletion .gitmodules
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
[submodule "src/OpenFeature.Contrib.Providers.Flagd/schemas"]
path = src/OpenFeature.Contrib.Providers.Flagd/schemas
url = git@github.com:open-feature/schemas.git
url = https://github.com/open-feature/schemas.git
[submodule "spec"]
path = spec
url = https://github.com/open-feature/spec.git
Expand Down
185 changes: 137 additions & 48 deletions src/OpenFeature.Contrib.Providers.Flagd/Resolver/InProcess/JsonEvaluator.cs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2,38 +2,32 @@
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Linq;
using System.Text.RegularExpressions;
using JsonLogic.Net;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using OpenFeature.Constant;
using OpenFeature.Contrib.Providers.Flagd.Resolver.InProcess.CustomEvaluators;
using OpenFeature.Error;
using OpenFeature.Model;
using System.Text.RegularExpressions;

namespace OpenFeature.Contrib.Providers.Flagd.Resolver.InProcess
{

internal class FlagConfiguration
{
[JsonProperty("state")]
internal string State { get; set; }
[JsonProperty("defaultVariant")]
internal string DefaultVariant { get; set; }
[JsonProperty("variants")]
internal Dictionary<string, object> Variants { get; set; }
[JsonProperty("targeting")]
internal object Targeting { get; set; }
[JsonProperty("source")]
internal string Source { get; set; }
[JsonProperty("state")] internal string State { get; set; }
[JsonProperty("defaultVariant")] internal string DefaultVariant { get; set; }
[JsonProperty("variants")] internal Dictionary<string, object> Variants { get; set; }
[JsonProperty("targeting")] internal object Targeting { get; set; }
[JsonProperty("source")] internal string Source { get; set; }
[JsonProperty("metadata")] internal Dictionary<string, object> Metadata { get; set; }
}

internal class FlagSyncData
{
[JsonProperty("flags")]
internal Dictionary<string, FlagConfiguration> Flags { get; set; }
[JsonProperty("$evaluators")]
internal Dictionary<string, object> Evaluators { get; set; }
[JsonProperty("flags")] internal Dictionary<string, FlagConfiguration> Flags { get; set; }
[JsonProperty("$evaluators")] internal Dictionary<string, object> Evaluators { get; set; }
[JsonProperty("metadata")] internal Dictionary<string, object> Metadata { get; set; }
}

internal class FlagConfigurationSync
Expand All @@ -53,6 +47,7 @@ internal enum FlagConfigurationUpdateType
internal class JsonEvaluator
{
private Dictionary<string, FlagConfiguration> _flags = new Dictionary<string, FlagConfiguration>();
private Dictionary<string, object> _flagSetMetadata = new Dictionary<string, object>();

private string _selector;

Expand Down Expand Up @@ -88,7 +83,59 @@ internal FlagSyncData Parse(string flagConfigurations)
});
}

return JsonConvert.DeserializeObject<FlagSyncData>(transformed);

var data = JsonConvert.DeserializeObject<FlagSyncData>(transformed);
if (data.Metadata == null)
{
data.Metadata = new Dictionary<string, object>();
}
else
{
foreach (var key in new List<string>(data.Metadata.Keys))
{
var value = data.Metadata[key];
if (value is long longValue)
{
data.Metadata[key] = (int)longValue;
continue;
}

VerifyMetadataValue(key, value);
}
}

foreach (var flagConfig in data.Flags)
{
if (flagConfig.Value.Metadata == null)
{
continue;
}

foreach (var key in new List<string>(flagConfig.Value.Metadata.Keys))
{
var value = flagConfig.Value.Metadata[key];
if (value is long longValue)
{
flagConfig.Value.Metadata[key] = (int)longValue;
continue;
}

VerifyMetadataValue(key, value);
}
}

return data;
}

private static void VerifyMetadataValue(string key, object value)
{
if (value is int || value is double || value is string || value is bool)
{
return;
}

throw new ParseErrorException("Metadata entry for key " + key + " and value " + value +
" is of unknown type");
}

internal void Sync(FlagConfigurationUpdateType updateType, string flagConfigurations)
Expand All @@ -99,71 +146,100 @@ internal void Sync(FlagConfigurationUpdateType updateType, string flagConfigurat
{
case FlagConfigurationUpdateType.ALL:
_flags = flagConfigsMap.Flags;
_flagSetMetadata = flagConfigsMap.Metadata;

break;
case FlagConfigurationUpdateType.ADD:
case FlagConfigurationUpdateType.UPDATE:
foreach (var keyAndValue in flagConfigsMap.Flags)
{
_flags[keyAndValue.Key] = keyAndValue.Value;
}
break;
case FlagConfigurationUpdateType.UPDATE:
foreach (var keyAndValue in flagConfigsMap.Flags)

foreach (var metadata in flagConfigsMap.Metadata)
{
_flags[keyAndValue.Key] = keyAndValue.Value;
_flagSetMetadata[metadata.Key] = metadata.Value;
}

break;
case FlagConfigurationUpdateType.DELETE:
foreach (var keyAndValue in flagConfigsMap.Flags)
{
_flags.Remove(keyAndValue.Key);
}
break;

foreach (var keyValuePair in flagConfigsMap.Metadata)
{
_flagSetMetadata.Remove(keyValuePair.Key);
}

break;
}
}

public ResolutionDetails<bool> ResolveBooleanValueAsync(string flagKey, bool defaultValue, EvaluationContext context = null)
public ResolutionDetails<bool> ResolveBooleanValueAsync(string flagKey, bool defaultValue,
EvaluationContext context = null)
{
return ResolveValue(flagKey, defaultValue, context);
}

public ResolutionDetails<string> ResolveStringValueAsync(string flagKey, string defaultValue, EvaluationContext context = null)
public ResolutionDetails<string> ResolveStringValueAsync(string flagKey, string defaultValue,
EvaluationContext context = null)
{
return ResolveValue(flagKey, defaultValue, context);
}

public ResolutionDetails<int> ResolveIntegerValueAsync(string flagKey, int defaultValue, EvaluationContext context = null)
public ResolutionDetails<int> ResolveIntegerValueAsync(string flagKey, int defaultValue,
EvaluationContext context = null)
{
return ResolveValue(flagKey, defaultValue, context);
}

public ResolutionDetails<double> ResolveDoubleValueAsync(string flagKey, double defaultValue, EvaluationContext context = null)
public ResolutionDetails<double> ResolveDoubleValueAsync(string flagKey, double defaultValue,
EvaluationContext context = null)
{
return ResolveValue(flagKey, defaultValue, context);
}

public ResolutionDetails<Value> ResolveStructureValueAsync(string flagKey, Value defaultValue, EvaluationContext context = null)
public ResolutionDetails<Value> ResolveStructureValueAsync(string flagKey, Value defaultValue,
EvaluationContext context = null)
{
return ResolveValue(flagKey, defaultValue, context);
}

private ResolutionDetails<T> ResolveValue<T>(string flagKey, T defaultValue, EvaluationContext context = null)
private ResolutionDetails<T> ResolveValue<T>(string flagKey, T defaultValue,
EvaluationContext context = null)
{
// check if we find the flag key
var reason = Reason.Static;
if (_flags.TryGetValue(flagKey, out var flagConfiguration))
{
if ("DISABLED" == flagConfiguration.State)
{
throw new FeatureProviderException(ErrorType.FlagNotFound, "FLAG_NOT_FOUND: flag '" + flagKey + "' is disabled");
throw new FeatureProviderException(ErrorType.FlagNotFound,
"FLAG_NOT_FOUND: flag '" + flagKey + "' is disabled");
}

Dictionary<string, object> combinedMetadata = new Dictionary<string, object>(_flagSetMetadata);
if (flagConfiguration.Metadata != null)
{
foreach (var metadataEntry in flagConfiguration.Metadata)
{
combinedMetadata[metadataEntry.Key] = metadataEntry.Value;
}
}

var flagMetadata = new ImmutableMetadata(combinedMetadata);
var variant = flagConfiguration.DefaultVariant;
if (flagConfiguration.Targeting != null && !String.IsNullOrEmpty(flagConfiguration.Targeting.ToString()) && flagConfiguration.Targeting.ToString() != "{}")
if (flagConfiguration.Targeting != null &&
!String.IsNullOrEmpty(flagConfiguration.Targeting.ToString()) &&
flagConfiguration.Targeting.ToString() != "{}")
{
reason = Reason.TargetingMatch;
var flagdProperties = new Dictionary<string, Value>();
flagdProperties.Add(FlagdProperties.FlagKeyKey, new Value(flagKey));
flagdProperties.Add(FlagdProperties.TimestampKey, new Value(DateTimeOffset.UtcNow.ToUnixTimeSeconds()));
flagdProperties.Add(FlagdProperties.TimestampKey,
new Value(DateTimeOffset.UtcNow.ToUnixTimeSeconds()));

if (context == null)
{
Expand All @@ -173,7 +249,7 @@ private ResolutionDetails<T> ResolveValue<T>(string flagKey, T defaultValue, Eva
var targetingContext = context.AsDictionary().Add(
FlagdProperties.FlagdPropertiesKey,
new Value(new Structure(flagdProperties))
);
);

var targetingString = flagConfiguration.Targeting.ToString();
// Parse json into hierarchical structure
Expand Down Expand Up @@ -202,32 +278,39 @@ private ResolutionDetails<T> ResolveValue<T>(string flagKey, T defaultValue, Eva
{
// if variant is null, revert to default
reason = Reason.Default;
flagConfiguration.Variants.TryGetValue(flagConfiguration.DefaultVariant, out var defaultVariantValue);
flagConfiguration.Variants.TryGetValue(flagConfiguration.DefaultVariant,
out var defaultVariantValue);
if (defaultVariantValue == null)
{
throw new FeatureProviderException(ErrorType.ParseError, "PARSE_ERROR: flag '" + flagKey + "' has missing or invalid defaultVariant.");
throw new FeatureProviderException(ErrorType.ParseError,
"PARSE_ERROR: flag '" + flagKey + "' has missing or invalid defaultVariant.");
}

var value = ExtractFoundVariant<T>(defaultVariantValue, flagKey);
return new ResolutionDetails<T>(
flagKey: flagKey,
value,
reason: reason,
variant: variant
);
flagKey: flagKey,
value,
reason: reason,
variant: variant,
flagMetadata: flagMetadata
);
}
else if (flagConfiguration.Variants.TryGetValue(variant, out var foundVariantValue))
{
// if variant can be found, return it - this could be TARGETING_MATCH or STATIC.
var value = ExtractFoundVariant<T>(foundVariantValue, flagKey);
return new ResolutionDetails<T>(
flagKey: flagKey,
value,
reason: reason,
variant: variant
);
flagKey: flagKey,
value,
reason: reason,
variant: variant,
flagMetadata: flagMetadata
);
}
}
throw new FeatureProviderException(ErrorType.FlagNotFound, "FLAG_NOT_FOUND: flag '" + flagKey + "' not found");

throw new FeatureProviderException(ErrorType.FlagNotFound,
"FLAG_NOT_FOUND: flag '" + flagKey + "' not found");
}

static T ExtractFoundVariant<T>(object foundVariantValue, string flagKey)
Expand All @@ -236,6 +319,7 @@ static T ExtractFoundVariant<T>(object foundVariantValue, string flagKey)
{
foundVariantValue = Convert.ToInt32(foundVariantValue);
}

if (typeof(T) == typeof(double))
{
foundVariantValue = Convert.ToDouble(foundVariantValue);
Expand All @@ -244,11 +328,14 @@ static T ExtractFoundVariant<T>(object foundVariantValue, string flagKey)
{
foundVariantValue = ConvertJObjectToOpenFeatureValue(value);
}

if (foundVariantValue is T castValue)
{
return castValue;
}
throw new FeatureProviderException(ErrorType.TypeMismatch, "TYPE_MISMATCH: flag '" + flagKey + "' does not match the expected type");

throw new FeatureProviderException(ErrorType.TypeMismatch,
"TYPE_MISMATCH: flag '" + flagKey + "' does not match the expected type");
}

static dynamic ConvertToDynamicObject(IImmutableDictionary<string, Value> dictionary)
Expand All @@ -259,7 +346,9 @@ static dynamic ConvertToDynamicObject(IImmutableDictionary<string, Value> dictio
foreach (var kvp in dictionary)
{
expandoDict.Add(kvp.Key,
kvp.Value.IsStructure ? ConvertToDynamicObject(kvp.Value.AsStructure.AsDictionary()) : kvp.Value.AsObject);
kvp.Value.IsStructure
? ConvertToDynamicObject(kvp.Value.AsStructure.AsDictionary())
: kvp.Value.AsObject);
}

return expandoObject;
Expand Down Expand Up @@ -302,4 +391,4 @@ static Value ConvertJObjectToOpenFeatureValue(JObject jsonValue)
return new Value(new Structure(result));
}
}
}
}
Loading
Loading