FilesExpand file tree

 master

/

Execution.java

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

204 lines (174 loc) · 10.2 KB

 master

/

Execution.java

Copy path

Top

File metadata and controls

• Code
• Blame

204 lines (174 loc) · 10.2 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

package graphql.execution;

import graphql.ExecutionInput;

import graphql.ExecutionResult;

import graphql.ExecutionResultImpl;

import graphql.GraphQLError;

import graphql.Internal;

import graphql.execution.instrumentation.Instrumentation;

import graphql.execution.instrumentation.InstrumentationContext;

import graphql.execution.instrumentation.InstrumentationState;

import graphql.execution.instrumentation.parameters.InstrumentationExecuteOperationParameters;

import graphql.execution.instrumentation.parameters.InstrumentationExecutionParameters;

import graphql.language.Document;

import graphql.language.FragmentDefinition;

import graphql.language.NodeUtil;

import graphql.language.OperationDefinition;

import graphql.language.VariableDefinition;

import graphql.schema.GraphQLObjectType;

import graphql.schema.GraphQLSchema;

import graphql.util.LogKit;

import org.slf4j.Logger;

import java.util.Collections;

import java.util.List;

import java.util.Map;

import java.util.concurrent.CompletableFuture;

import static graphql.Assert.assertShouldNeverHappen;

import static graphql.execution.ExecutionContextBuilder.newExecutionContextBuilder;

import static graphql.execution.ExecutionStepInfo.newExecutionStepInfo;

import static graphql.execution.ExecutionStrategyParameters.newParameters;

import static graphql.language.OperationDefinition.Operation.MUTATION;

import static graphql.language.OperationDefinition.Operation.QUERY;

import static graphql.language.OperationDefinition.Operation.SUBSCRIPTION;

import static java.util.concurrent.CompletableFuture.completedFuture;

@Internal

public class Execution {

private static final Logger logNotSafe = LogKit.getNotPrivacySafeLogger(Execution.class);

private final FieldCollector fieldCollector = new FieldCollector();

private final ValuesResolver valuesResolver = new ValuesResolver();

private final ExecutionStrategy queryStrategy;

private final ExecutionStrategy mutationStrategy;

private final ExecutionStrategy subscriptionStrategy;

private final Instrumentation instrumentation;

private ValueUnboxer valueUnboxer;

public Execution(ExecutionStrategy queryStrategy, ExecutionStrategy mutationStrategy, ExecutionStrategy subscriptionStrategy, Instrumentation instrumentation, ValueUnboxer valueUnboxer) {

this.queryStrategy = queryStrategy != null ? queryStrategy : new AsyncExecutionStrategy();

this.mutationStrategy = mutationStrategy != null ? mutationStrategy : new AsyncSerialExecutionStrategy();

this.subscriptionStrategy = subscriptionStrategy != null ? subscriptionStrategy : new AsyncExecutionStrategy();

this.instrumentation = instrumentation;

this.valueUnboxer = valueUnboxer;

}

public CompletableFuture<ExecutionResult> execute(Document document, GraphQLSchema graphQLSchema, ExecutionId executionId, ExecutionInput executionInput, InstrumentationState instrumentationState) {

NodeUtil.GetOperationResult getOperationResult = NodeUtil.getOperation(document, executionInput.getOperationName());

Map<String, FragmentDefinition> fragmentsByName = getOperationResult.fragmentsByName;

OperationDefinition operationDefinition = getOperationResult.operationDefinition;

Map<String, Object> inputVariables = executionInput.getVariables();

List<VariableDefinition> variableDefinitions = operationDefinition.getVariableDefinitions();

Map<String, Object> coercedVariables;

try {

coercedVariables = valuesResolver.coerceVariableValues(graphQLSchema, variableDefinitions, inputVariables);

} catch (RuntimeException rte) {

if (rte instanceof GraphQLError) {

return completedFuture(new ExecutionResultImpl((GraphQLError) rte));

}

throw rte;

}

ExecutionContext executionContext = newExecutionContextBuilder()

.instrumentation(instrumentation)

.instrumentationState(instrumentationState)

.executionId(executionId)

.graphQLSchema(graphQLSchema)

.queryStrategy(queryStrategy)

.mutationStrategy(mutationStrategy)

.subscriptionStrategy(subscriptionStrategy)

.context(executionInput.getContext())

.graphQLContext(executionInput.getGraphQLContext())

.localContext(executionInput.getLocalContext())

.root(executionInput.getRoot())

.fragmentsByName(fragmentsByName)

.variables(coercedVariables)

.document(document)

.operationDefinition(operationDefinition)

.dataLoaderRegistry(executionInput.getDataLoaderRegistry())

.cacheControl(executionInput.getCacheControl())

.locale(executionInput.getLocale())

.valueUnboxer(valueUnboxer)

.executionInput(executionInput)

.build();

InstrumentationExecutionParameters parameters = new InstrumentationExecutionParameters(

executionInput, graphQLSchema, instrumentationState

);

executionContext = instrumentation.instrumentExecutionContext(executionContext, parameters);

return executeOperation(executionContext, executionInput.getRoot(), executionContext.getOperationDefinition());

}

private CompletableFuture<ExecutionResult> executeOperation(ExecutionContext executionContext, Object root, OperationDefinition operationDefinition) {

InstrumentationExecuteOperationParameters instrumentationParams = new InstrumentationExecuteOperationParameters(executionContext);

InstrumentationContext<ExecutionResult> executeOperationCtx = instrumentation.beginExecuteOperation(instrumentationParams);

OperationDefinition.Operation operation = operationDefinition.getOperation();

GraphQLObjectType operationRootType;

try {

operationRootType = getOperationRootType(executionContext.getGraphQLSchema(), operationDefinition);

} catch (RuntimeException rte) {

if (rte instanceof GraphQLError) {

ExecutionResult executionResult = new ExecutionResultImpl(Collections.singletonList((GraphQLError) rte));

CompletableFuture<ExecutionResult> resultCompletableFuture = completedFuture(executionResult);

executeOperationCtx.onDispatched(resultCompletableFuture);

executeOperationCtx.onCompleted(executionResult, rte);

return resultCompletableFuture;

}

throw rte;

}

FieldCollectorParameters collectorParameters = FieldCollectorParameters.newParameters()

.schema(executionContext.getGraphQLSchema())

.objectType(operationRootType)

.fragments(executionContext.getFragmentsByName())

.variables(executionContext.getVariables())

.build();

MergedSelectionSet fields = fieldCollector.collectFields(collectorParameters, operationDefinition.getSelectionSet());

ResultPath path = ResultPath.rootPath();

ExecutionStepInfo executionStepInfo = newExecutionStepInfo().type(operationRootType).path(path).build();

NonNullableFieldValidator nonNullableFieldValidator = new NonNullableFieldValidator(executionContext, executionStepInfo);

ExecutionStrategyParameters parameters = newParameters()

.executionStepInfo(executionStepInfo)

.source(root)

.localContext(executionContext.getLocalContext())

.fields(fields)

.nonNullFieldValidator(nonNullableFieldValidator)

.path(path)

.build();

CompletableFuture<ExecutionResult> result;

try {

ExecutionStrategy executionStrategy = executionContext.getStrategy(operation);

if (logNotSafe.isDebugEnabled()) {

logNotSafe.debug("Executing '{}' query operation: '{}' using '{}' execution strategy", executionContext.getExecutionId(), operation, executionStrategy.getClass().getName());

}

result = executionStrategy.execute(executionContext, parameters);

} catch (NonNullableFieldWasNullException e) {

// this means it was non null types all the way from an offending non null type

// up to the root object type and there was a a null value some where.

//

// The spec says we should return null for the data in this case

//

// http://facebook.github.io/graphql/#sec-Errors-and-Non-Nullability

//

result = completedFuture(new ExecutionResultImpl(null, executionContext.getErrors()));

}

// note this happens NOW - not when the result completes

executeOperationCtx.onDispatched(result);

result = result.whenComplete(executeOperationCtx::onCompleted);

return result;

}

private GraphQLObjectType getOperationRootType(GraphQLSchema graphQLSchema, OperationDefinition operationDefinition) {

OperationDefinition.Operation operation = operationDefinition.getOperation();

if (operation == MUTATION) {

GraphQLObjectType mutationType = graphQLSchema.getMutationType();

if (mutationType == null) {

throw new MissingRootTypeException("Schema is not configured for mutations.", operationDefinition.getSourceLocation());

}

return mutationType;

} else if (operation == QUERY) {

GraphQLObjectType queryType = graphQLSchema.getQueryType();

if (queryType == null) {

throw new MissingRootTypeException("Schema does not define the required query root type.", operationDefinition.getSourceLocation());

}

return queryType;

} else if (operation == SUBSCRIPTION) {

GraphQLObjectType subscriptionType = graphQLSchema.getSubscriptionType();

if (subscriptionType == null) {

throw new MissingRootTypeException("Schema is not configured for subscriptions.", operationDefinition.getSourceLocation());

}

return subscriptionType;

} else {

return assertShouldNeverHappen("Unhandled case. An extra operation enum has been added without code support");

}

}

}