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This is the official Firebase Admin Java SDK. Build extraordinary native JVM apps in
minutes with Firebase. The Firebase platform can power your app’s backend, user
authentication, static hosting, and more.
/*
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.firebase.remoteconfig;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
import com.google.api.client.googleapis.util.Utils;
import com.google.api.client.json.JsonFactory;
import com.google.common.base.Strings;
import com.google.firebase.ErrorCode;
import com.google.firebase.internal.NonNull;
import com.google.firebase.remoteconfig.internal.TemplateResponse;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
/**
* Represents a Remote Config template.
*/
public final class Template {
private String etag;
private Map parameters;
private List conditions;
private Map parameterGroups;
private Version version;
/**
* Creates a new {@link Template}.
*
* @param etag The ETag of this template.
*/
public Template(String etag) {
this.parameters = new HashMap<>();
this.conditions = new ArrayList<>();
this.parameterGroups = new HashMap<>();
this.etag = etag;
}
Template() {
this((String) null);
}
Template(@NonNull TemplateResponse templateResponse) {
checkNotNull(templateResponse);
this.parameters = new HashMap<>();
this.conditions = new ArrayList<>();
this.parameterGroups = new HashMap<>();
if (templateResponse.getParameters() != null) {
for (Map.Entry entry
: templateResponse.getParameters().entrySet()) {
this.parameters.put(entry.getKey(), new Parameter(entry.getValue()));
}
}
if (templateResponse.getConditions() != null) {
for (TemplateResponse.ConditionResponse conditionResponse
: templateResponse.getConditions()) {
this.conditions.add(new Condition(conditionResponse));
}
}
if (templateResponse.getParameterGroups() != null) {
for (Map.Entry entry
: templateResponse.getParameterGroups().entrySet()) {
this.parameterGroups.put(entry.getKey(), new ParameterGroup(entry.getValue()));
}
}
if (templateResponse.getVersion() != null) {
this.version = new Version(templateResponse.getVersion());
}
this.etag = templateResponse.getEtag();
}
/**
* Creates and returns a new Remote Config template from a JSON string.
* Input JSON string must contain an {@code etag} property to create a valid template.
*
* @param json A non-null JSON string to populate a Remote Config template.
* @return A new {@link Template} instance.
* @throws FirebaseRemoteConfigException If the input JSON string is not parsable.
*/
public static Template fromJSON(@NonNull String json) throws FirebaseRemoteConfigException {
checkArgument(!Strings.isNullOrEmpty(json), "JSON String must not be null or empty.");
// using the default json factory as no rpc calls are made here
JsonFactory jsonFactory = Utils.getDefaultJsonFactory();
try {
TemplateResponse templateResponse = jsonFactory.createJsonParser(json)
.parseAndClose(TemplateResponse.class);
return new Template(templateResponse);
} catch (IOException e) {
throw new FirebaseRemoteConfigException(ErrorCode.INVALID_ARGUMENT,
"Unable to parse JSON string.");
}
}
/**
* Gets the ETag of the template.
*
* @return The ETag of the template.
*/
public String getETag() {
return this.etag;
}
/**
* Gets the map of parameters of the template.
*
* @return A non-null map of parameter keys to their optional default values and optional
* conditional values.
*/
@NonNull
public Map getParameters() {
return this.parameters;
}
/**
* Gets the list of conditions of the template.
*
* @return A non-null list of conditions.
*/
@NonNull
public List getConditions() {
return conditions;
}
/**
* Gets the map of parameter groups of the template.
*
* @return A non-null map of parameter group names to their parameter group instances.
*/
@NonNull
public Map getParameterGroups() {
return parameterGroups;
}
/**
* Gets the version information of the template.
*
* @return The version information of the template.
*/
public Version getVersion() {
return version;
}
/**
* Sets the map of parameters of the template.
*
* @param parameters A non-null map of parameter keys to their optional default values and
* optional conditional values.
* @return This {@link Template} instance.
*/
public Template setParameters(
@NonNull Map parameters) {
checkNotNull(parameters, "parameters must not be null.");
this.parameters = parameters;
return this;
}
/**
* Sets the list of conditions of the template.
*
* @param conditions A non-null list of conditions in descending order by priority.
* @return This {@link Template} instance.
*/
public Template setConditions(
@NonNull List conditions) {
checkNotNull(conditions, "conditions must not be null.");
this.conditions = conditions;
return this;
}
/**
* Sets the map of parameter groups of the template.
*
* @param parameterGroups A non-null map of parameter group names to their
* parameter group instances.
* @return This {@link Template} instance.
*/
public Template setParameterGroups(
@NonNull Map parameterGroups) {
checkNotNull(parameterGroups, "parameter groups must not be null.");
this.parameterGroups = parameterGroups;
return this;
}
/**
* Sets the version information of the template.
* Only the version's description field can be specified here.
*
* @param version A {@link Version} instance.
* @return This {@link Template} instance.
*/
public Template setVersion(Version version) {
this.version = version;
return this;
}
/**
* Gets the JSON-serializable representation of this template.
*
* @return A JSON-serializable representation of this {@link Template} instance.
*/
public String toJSON() {
JsonFactory jsonFactory = Utils.getDefaultJsonFactory();
try {
return jsonFactory.toString(this.toTemplateResponse(true));
} catch (IOException e) {
throw new RuntimeException(e);
}
}
Template setETag(String etag) {
this.etag = etag;
return this;
}
TemplateResponse toTemplateResponse(boolean includeAll) {
Map parameterResponses = new HashMap<>();
for (Map.Entry entry : this.parameters.entrySet()) {
parameterResponses.put(entry.getKey(), entry.getValue().toParameterResponse());
}
List conditionResponses = new ArrayList<>();
for (Condition condition : this.conditions) {
conditionResponses.add(condition.toConditionResponse());
}
Map parameterGroupResponse = new HashMap<>();
for (Map.Entry entry : this.parameterGroups.entrySet()) {
parameterGroupResponse.put(entry.getKey(), entry.getValue().toParameterGroupResponse());
}
TemplateResponse.VersionResponse versionResponse = (this.version == null) ? null
: this.version.toVersionResponse(includeAll);
TemplateResponse templateResponse = new TemplateResponse()
.setParameters(parameterResponses)
.setConditions(conditionResponses)
.setParameterGroups(parameterGroupResponse)
.setVersion(versionResponse);
if (includeAll) {
return templateResponse.setEtag(this.etag);
}
return templateResponse;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
Template template = (Template) o;
return Objects.equals(etag, template.etag)
&& Objects.equals(parameters, template.parameters)
&& Objects.equals(conditions, template.conditions)
&& Objects.equals(parameterGroups, template.parameterGroups)
&& Objects.equals(version, template.version);
}
@Override
public int hashCode() {
return Objects.hash(etag, parameters, conditions, parameterGroups, version);
}
}