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.../main/java/org/cloudfoundry/multiapps/mta/resolvers/v2/ResourceLiveParameterResolver.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,132 @@ | ||
| package org.cloudfoundry.multiapps.mta.resolvers.v2; | ||
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| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Optional; | ||
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| import org.cloudfoundry.multiapps.mta.model.*; | ||
| import org.cloudfoundry.multiapps.mta.model.Module; | ||
| import org.cloudfoundry.multiapps.mta.resolvers.Reference; | ||
| import org.cloudfoundry.multiapps.mta.resolvers.ReferencePattern; | ||
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| public class ResourceLiveParameterResolver { | ||
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| private static final String CONFIG = "config"; | ||
| private static final String DEFAULT_URL = "${default-url}"; | ||
| private static final String DEFAULT_LIVE_URL = "default-live-url"; | ||
| private DeploymentDescriptor deploymentDescriptor; | ||
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| public ResourceLiveParameterResolver(DeploymentDescriptor deploymentDescriptor) { | ||
| this.deploymentDescriptor = deploymentDescriptor; | ||
| } | ||
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| public void resolveResource(Resource resource) { | ||
| if (resource.getParameters() | ||
| .containsKey(CONFIG)) { | ||
| Map<String, Object> serviceCreationParameters = castToMap(resource.getParameters() | ||
| .get(CONFIG)); | ||
| serviceCreationParameters.entrySet() | ||
| .forEach(entry -> resolveResourceParameter(entry, resource)); | ||
| } | ||
| } | ||
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| private Map<String, Object> castToMap(Object entryValue) { | ||
| return (Map<String, Object>) entryValue; | ||
| } | ||
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| private void resolveResourceParameter(Map.Entry<String, Object> entry, Resource resource) { | ||
| if (entry.getValue() instanceof Map) { | ||
| resolveMapParameter(castToMap(entry.getValue()), resource); | ||
| } else if (entry.getValue() instanceof String) { | ||
| resolveConfigParameter(entry, resource); | ||
| } | ||
| } | ||
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| private void resolveMapParameter(Map<String, Object> resourceParameter, Resource resource) { | ||
| resourceParameter.entrySet() | ||
| .forEach(entry -> resolveResourceParameter(entry, resource)); | ||
| } | ||
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| private void resolveConfigParameter(Map.Entry<String, Object> resourceParameter, Resource resource) { | ||
| String resourceParameterValue = (String) resourceParameter.getValue(); | ||
| List<Reference> matchedReferences = ReferencePattern.FULLY_QUALIFIED.match(resourceParameterValue); | ||
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| matchedReferences.forEach(ref -> updateParamsFromReference(resource, ref, resourceParameterValue, resourceParameter)); | ||
| } | ||
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| private void updateParamsFromReference(Resource resource, Reference ref, String resourceParameterValue, | ||
| Map.Entry<String, Object> resourceParameter) { | ||
| deploymentDescriptor.getModules() | ||
| .stream() | ||
| .filter(module -> isModuleNeeded(module, ref.getDependencyName())) | ||
| .findFirst() | ||
| .ifPresent(module -> updateMapFromModule(resource, ref, module, resourceParameterValue, resourceParameter)); | ||
| } | ||
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| private void updateMapFromModule(Resource resource, Reference ref, Module module, String resourceParameterValue, | ||
| Map.Entry<String, Object> resourceParameter) { | ||
| Optional<ProvidedDependency> moduleProvidedDependencyOpt = module.getProvidedDependencies() | ||
| .stream() | ||
| .filter(dp -> dp.getName() | ||
| .equals(ref.getDependencyName())) | ||
| .findAny(); | ||
| Optional<RequiredDependency> resourceRequiredDependencyOpt = resource.getRequiredDependencies() | ||
| .stream() | ||
| .filter(reqDp -> reqDp.getName() | ||
| .equals(ref.getDependencyName())) | ||
| .findAny(); | ||
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| if (moduleProvidedDependencyOpt.isPresent() && resourceRequiredDependencyOpt.isPresent()) { | ||
| Object requiredDependencyValue = moduleProvidedDependencyOpt.get() | ||
| .getProperties() | ||
| .get(ref.getKey()); | ||
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| if (requiredDependencyValue instanceof Map) { | ||
| resolveModuleProvidedDependency(castToMap(requiredDependencyValue), module); | ||
| resourceParameter.setValue(requiredDependencyValue); | ||
| } else if (isStringValueReplaceable(requiredDependencyValue)) { | ||
| replaceValueInResourceParameter(module, resourceParameterValue, resourceParameter, ref, | ||
| castToString(requiredDependencyValue)); | ||
| } | ||
| } | ||
| } | ||
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| private boolean isStringValueReplaceable(Object object) { | ||
| return object instanceof String && castToString(object).contains(DEFAULT_URL); | ||
| } | ||
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| private void replaceValueInResourceParameter(Module module, String resourceParameterValue, Map.Entry<String, Object> resourceParameter, | ||
| Reference reference, String requiredDependencyValueString) { | ||
| requiredDependencyValueString = requiredDependencyValueString.replace(DEFAULT_URL, castToString(module.getParameters() | ||
| .get(DEFAULT_LIVE_URL))); | ||
| requiredDependencyValueString = resourceParameterValue.replace(reference.getMatchedPattern(), requiredDependencyValueString); | ||
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| resourceParameter.setValue(requiredDependencyValueString); | ||
| } | ||
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| private void resolveModuleProvidedDependency(Map<String, Object> requiredDependencyMap, Module module) { | ||
| requiredDependencyMap.entrySet() | ||
| .forEach(entry -> updateModuleDependencyFromMap(module, entry)); | ||
| } | ||
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| private void updateModuleDependencyFromMap(Module module, Map.Entry<String, Object> entry) { | ||
| if (isStringValueReplaceable(entry.getValue())) { | ||
| entry.setValue(castToString(entry.getValue()).replace(DEFAULT_URL, castToString(module.getParameters() | ||
| .get(DEFAULT_LIVE_URL)))); | ||
| } else if (entry.getValue() instanceof Map) { | ||
| resolveModuleProvidedDependency(castToMap(entry.getValue()), module); | ||
| } | ||
| } | ||
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| private boolean isModuleNeeded(Module module, String name) { | ||
| return module.getProvidedDependencies() | ||
| .stream() | ||
| .anyMatch(dependency -> dependency.getName() | ||
| .equals(name)); | ||
| } | ||
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| private String castToString(Object object) { | ||
| return String.valueOf(object); | ||
| } | ||
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| } |