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@ -374,6 +374,7 @@ specified by the `spring.active.profiles` property are added after those configu
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the `SpringApplication` API and therefore take precedence.
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[[boot-features-external-config-placeholders-in-properties]]
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=== Placeholders in properties
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The values in `application.properties` are filtered through the existing `Environment`
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@ -307,25 +307,14 @@ public class ConfigFileApplicationListener
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public void load() throws IOException {
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this.propertiesLoader = new PropertySourcesLoader();
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this.profiles = Collections.asLifoQueue(new LinkedList<String>());
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this.activatedProfiles = false;
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this.profiles = Collections.asLifoQueue(new LinkedList<String>());
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Set<String> initialActiveProfiles = null;
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if (this.environment.containsProperty(ACTIVE_PROFILES_PROPERTY)) {
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// Any pre-existing active profiles set via property sources (e.g. System
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// properties) take precedence over those added in config files.
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initialActiveProfiles = maybeActivateProfiles(
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this.environment.getProperty(ACTIVE_PROFILES_PROPERTY));
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}
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// Pre-existing active profiles set via Environment.setActiveProfiles()
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// are additional profiles and config files are allowed to add more if
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// they want to, so don't call addActiveProfiles() here.
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List<String> list = filterEnvironmentProfiles(initialActiveProfiles != null
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? initialActiveProfiles : Collections.<String>emptySet());
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// Reverse them so the order is the same as from getProfilesForValue()
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// (last one wins when properties are eventually resolved)
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Collections.reverse(list);
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this.profiles.addAll(list);
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Set<String> initialActiveProfiles = initializeActiveProfiles();
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this.profiles.addAll(getUnprocessedActiveProfiles(initialActiveProfiles));
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// The default profile for these purposes is represented as null. We add it
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// last so that it is first out of the queue (active profiles will then
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@ -351,6 +340,44 @@ public class ConfigFileApplicationListener
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addConfigurationProperties(this.propertiesLoader.getPropertySources());
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}
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private Set<String> initializeActiveProfiles() {
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if (!this.environment.containsProperty(ACTIVE_PROFILES_PROPERTY)) {
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return Collections.emptySet();
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}
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// Any pre-existing active profiles set via property sources (e.g. System
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// properties) take precedence over those added in config files.
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Set<String> activeProfiles = getProfilesForValue(
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this.environment.getProperty(ACTIVE_PROFILES_PROPERTY));
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maybeActivateProfiles(activeProfiles);
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return activeProfiles;
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}
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/**
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* Return the active profiles that have not been processed yet. If a profile is
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* enabled via both {@link #ACTIVE_PROFILES_PROPERTY} and
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* {@link ConfigurableEnvironment#addActiveProfile(String)} it needs to be
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* filtered so that the {@link #ACTIVE_PROFILES_PROPERTY} value takes precedence.
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* <p>
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* Concretely, if the "cloud" profile is enabled via the environment, it will take
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* less precedence that any profile set via the {@link #ACTIVE_PROFILES_PROPERTY}.
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* @param initialActiveProfiles the profiles that have been enabled via
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* {@link #ACTIVE_PROFILES_PROPERTY}
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* @return the unprocessed active profiles from the environment to enable
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*/
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private List<String> getUnprocessedActiveProfiles(
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Set<String> initialActiveProfiles) {
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List<String> unprocessedActiveProfiles = new ArrayList<String>();
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for (String profile : this.environment.getActiveProfiles()) {
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if (!initialActiveProfiles.contains(profile)) {
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unprocessedActiveProfiles.add(profile);
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}
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}
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// Reverse them so the order is the same as from getProfilesForValue()
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// (last one wins when properties are eventually resolved)
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Collections.reverse(unprocessedActiveProfiles);
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return unprocessedActiveProfiles;
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}
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private void load(String location, String name, String profile)
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throws IOException {
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String group = "profile=" + (profile == null ? "" : profile);
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@ -387,10 +414,7 @@ public class ConfigFileApplicationListener
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propertySource = this.propertiesLoader.load(resource, group, name,
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profile);
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if (propertySource != null) {
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maybeActivateProfiles(
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propertySource.getProperty(ACTIVE_PROFILES_PROPERTY));
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addIncludeProfiles(
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propertySource.getProperty(INCLUDE_PROFILES_PROPERTY));
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handleProfileProperties(propertySource);
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}
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}
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StringBuilder msg = new StringBuilder();
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@ -407,58 +431,37 @@ public class ConfigFileApplicationListener
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return propertySource;
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}
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/**
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* Return the active profiles that have not been processed yet.
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* <p>If a profile is enabled via both {@link #ACTIVE_PROFILES_PROPERTY} and
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* {@link ConfigurableEnvironment#addActiveProfile(String)} it needs to be
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* filtered so that the {@link #ACTIVE_PROFILES_PROPERTY} value takes
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* precedence.
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* <p>Concretely, if the "cloud" profile is enabled via the environment,
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* it will take less precedence that any profile set via the
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* {@link #ACTIVE_PROFILES_PROPERTY}.
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* @param initialActiveProfiles the profiles that have been enabled via
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* {@link #ACTIVE_PROFILES_PROPERTY}
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* @return the additional profiles from the environment to enable
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*/
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private List<String> filterEnvironmentProfiles(Set<String> initialActiveProfiles) {
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List<String> additionalProfiles = new ArrayList<String>();
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for (String profile : this.environment.getActiveProfiles()) {
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if (!initialActiveProfiles.contains(profile)) {
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additionalProfiles.add(profile);
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}
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}
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return additionalProfiles;
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private void handleProfileProperties(PropertySource<?> propertySource) {
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Set<String> activeProfiles = getProfilesForValue(
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propertySource.getProperty(ACTIVE_PROFILES_PROPERTY));
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maybeActivateProfiles(activeProfiles);
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Set<String> includeProfiles = getProfilesForValue(
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propertySource.getProperty(INCLUDE_PROFILES_PROPERTY));
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addProfiles(includeProfiles);
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}
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private Set<String> maybeActivateProfiles(Object value) {
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private void maybeActivateProfiles(Set<String> profiles) {
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if (this.activatedProfiles) {
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if (value != null) {
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this.debug.add("Profiles already activated, '" + value
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if (!profiles.isEmpty()) {
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this.debug.add("Profiles already activated, '" + profiles
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+ "' will not be applied");
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}
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return Collections.emptySet();
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return;
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}
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Set<String> profiles = getProfilesForValue(value);
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activateProfiles(profiles);
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if (profiles.size() > 0) {
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addProfiles(profiles);
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this.debug.add("Activated profiles "
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+ StringUtils.collectionToCommaDelimitedString(profiles));
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this.activatedProfiles = true;
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}
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return profiles;
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}
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private void addIncludeProfiles(Object value) {
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Set<String> profiles = getProfilesForValue(value);
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activateProfiles(profiles);
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}
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private Set<String> getProfilesForValue(Object property) {
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return asResolvedSet((property == null ? null : property.toString()), null);
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String value = (property == null ? null : property.toString());
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return asResolvedSet(value, null);
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}
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private void activateProfiles(Set<String> profiles) {
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private void addProfiles(Set<String> profiles) {
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for (String profile : profiles) {
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this.profiles.add(profile);
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if (!this.environment.acceptsProfiles(profile)) {
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