com.site.dotcom.service.services.impl.GlobalFactoryConfigImpl-ca.xml

<jcr:root xmlns:sling="http://sling.apache.org/jcr/sling/1.0" xmlns:jcr="http://www.jcp.org/jcr/1.0"
    jcr:primaryType="sling:OsgiConfig"
    youtube.apikey="AIzaSyCgsLOWhd7dJAesI0-WfLiSnjPH0UlUastgghks"
    google.head.tag="q8PyBqdxxaNh8V67pUQV1oLCytHfy_hqlUbEJrssa"
    aem.design.path="/etc/designs/site"
    aem.path.regex="/content/site/en_ca"
    aem.default.site.config="{Boolean}false"
    google.gtm.id="GTM-UJSF"
/>

com.site.dotcom.service.services.impl.GlobalFactoryConfigImpl-general.xml

<jcr:root xmlns:sling="http://sling.apache.org/jcr/sling/1.0" xmlns:jcr="http://www.jcp.org/jcr/1.0"
    jcr:primaryType="sling:OsgiConfig"
    youtube.apikey="AIzaSyCgsLOWhd7dJAesI0-WfLiSnjPH0O6FUlU"
    google.head.tag="q8PyBqdxxaNh8V67pUQV1oLCytHfy_hqlUbEJrycIg4"
    aem.design.path="/etc/designs/site"
    aem.path.regex="/content/site"
    aem.default.site.config="{Boolean}true"
    google.gtm.id="GTM-BKSM"
/>

com.site.dotcom.service.services.impl.GlobalFactoryConfigImpl-us.xml

<jcr:root xmlns:sling="http://sling.apache.org/jcr/sling/1.0" xmlns:jcr="http://www.jcp.org/jcr/1.0"
    jcr:primaryType="sling:OsgiConfig"
    youtube.apikey="AIzaSyCgsLOWhd7dJAesI0-WfLiSnjPH0O6FUlUasssas"
    google.head.tag="q8PyBqdxxaNh8V67pUQV1oLCytHfy_hqlUbEJrycIg4assa"
    aem.design.path="/etc/designs/site"
    aem.path.regex="/content/site/en_us"
    aem.default.site.config="{Boolean}false"
    google.gtm.id="GTM-BKAA"
/>

GlobalConfigConsumerServiceImpl.java

package com.site.dotcom.service.services.impl;

import java.util.ArrayList;
import java.util.List;

import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.ReferenceCardinality;
import org.apache.felix.scr.annotations.ReferencePolicy;
import org.apache.felix.scr.annotations.Service;

import com.site.dotcom.service.services.GlobalConfigConsumerService;
import com.site.dotcom.service.services.GlobalConfigService;

@Component(label = "Global Configuration Factory Consumer", description = "AEM Global Configuration Factory Consumer", immediate = true, metatype = true, enabled = true)
@Service(GlobalConfigConsumerService.class)
public class GlobalConfigConsumerServiceImpl implements GlobalConfigConsumerService {

    @Reference(referenceInterface = GlobalConfigService.class, cardinality = ReferenceCardinality.OPTIONAL_MULTIPLE, policy = ReferencePolicy.DYNAMIC)
    private List<GlobalConfigService> configs;

    @Override
    public GlobalConfigService getGlobalConfigService(String path) {
        GlobalConfigService defaultService = null;
        for (GlobalConfigService globalConfigService : configs) {
            if (path.startsWith(globalConfigService.getPath()) && !globalConfigService.getDefaultConfig()) {
                return globalConfigService;
            } else if (globalConfigService.getDefaultConfig()) {
                defaultService = globalConfigService;
            }
        }
        return defaultService;
    }

    protected synchronized void bindGlobalConfigService(final GlobalConfigService config) {
        if (configs == null) {
            configs = new ArrayList<GlobalConfigService>();
        }

        configs.add(config);
    }

    protected synchronized void unbindGlobalConfigService(final GlobalConfigService config) {
        configs.remove(config);
    }

}

GlobalFactoryConfigImpl.java

package com.site.dotcom.service.services.impl;

import java.util.Map;

import org.apache.felix.scr.annotations.Activate;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.ConfigurationPolicy;
import org.apache.felix.scr.annotations.Properties;
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.Service;
import org.apache.sling.commons.osgi.PropertiesUtil;
import org.osgi.framework.Constants;

import com.site.dotcom.service.services.GlobalConfigService;

/**
 * 
 * @author 3|Share - David Truchet
 *
 */
@Component(immediate = true, metatype = true, label = "Site Global Config Service", 
        enabled = true, policy = ConfigurationPolicy.REQUIRE, configurationFactory = true)
@Service(value = GlobalConfigService.class)
@Properties({ @Property(name = Constants.SERVICE_VENDOR, value = "3|Share"),
        @Property(name = Constants.SERVICE_DESCRIPTION, value = "Provides a service with Site dotcom global configurations") })
public class GlobalFactoryConfigImpl implements GlobalConfigService {

    private String youTubeAPIKey;
    @Property(label = "YouTube API Key", description = "YouTube V3 API Key")
    private static final String YOUTUBE_API_KEY = "youtube.apikey";

    private String googleHeadTag;
    @Property(label = "Google Head Tag", description = "Google head tag key")
    private static final String GOOGLE_HEAD_TAG = "google.head.tag";

    private String designPath;
    @Property(label = "AEM Design Path", description = "AEM page design path")
    private static final String AEM_DESIGN_PATH = "aem.design.path";

    private String path;
    @Property(label = "AEM Path Regex", description = "AEM page path regex")
    private static final String AEM_PATH = "aem.path.regex";

    private Boolean defaultConfig;
    @Property(label = "Default site config", description = "Default site config")
    private static final String DEFAULT_CONFIG = "aem.default.site.config";

    private String gtmId;
    @Property(label = "Google GTM Id", description = "Google GTM Id")
    private static final String GOOGLE_GTM_ID = "google.gtm.id";

    @Activate
    protected void update(final Map<String, Object> properties) {
        this.youTubeAPIKey = PropertiesUtil.toString(properties.get(YOUTUBE_API_KEY), "nokey");
        this.path = PropertiesUtil.toString(properties.get(AEM_PATH), "nopath");
        this.googleHeadTag = PropertiesUtil.toString(properties.get(GOOGLE_HEAD_TAG), "notag");
        this.designPath = PropertiesUtil.toString(properties.get(AEM_DESIGN_PATH), "nodesignpath");
        this.defaultConfig = PropertiesUtil.toBoolean(properties.get(DEFAULT_CONFIG), false);
        this.gtmId = PropertiesUtil.toString(properties.get(GOOGLE_GTM_ID), "nogtmid");
    }

    @Override
    public String getYouTubeAPIKey() {
        return this.youTubeAPIKey;
    }

    @Override
    public String getGoogleHeadTag() {
        return this.googleHeadTag;
    }

    @Override
    public String getPath() {
        return this.path;
    }

    @Override
    public String getDesignPath() {
        return this.designPath;
    }

    @Override
    public Boolean getDefaultConfig() {
        return defaultConfig;
    }

    @Override
    public String getGtmId() {
        return this.gtmId;
    }

}