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Fix clearer error message when CouchDB is unavailable #66

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Fix clearer error message when CouchDB is unavailable #66

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a7ce2b7
fix(chatbot): handle CouchDB unavailability with clear error and safe…
Dev10-sys Jan 22, 2026
c02fc44
fix(chatbot): safely handle CouchDB outage using disabled SPARQL fall…
Dev10-sys Jan 22, 2026
3e5c2f1
fix(chatbot): fully disable SPARQL paths when explorer DB is unavailable
Dev10-sys Jan 23, 2026
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53 changes: 33 additions & 20 deletions src/main/java/chatbot/Application.java
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Original file line number Diff line number Diff line change
Expand Up @@ -46,7 +46,8 @@ public class Application {
private static final Logger logger = LoggerFactory.getLogger(Application.class);

@Bean
public MessengerSendClient initializeFBMessengerSendClient(@Value("${chatbot.fb.pageAccessToken}") String pageAccessToken) {
public MessengerSendClient initializeFBMessengerSendClient(
@Value("${chatbot.fb.pageAccessToken}") String pageAccessToken) {
logger.info("Initializing MessengerSendClient - pageAccessToken: {}", pageAccessToken);
return MessengerPlatform.newSendClientBuilder(pageAccessToken).build();
}
Expand All @@ -55,10 +56,14 @@ public MessengerSendClient initializeFBMessengerSendClient(@Value("${chatbot.fb.
static class AssetsConfiguration extends WebMvcConfigurerAdapter {
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/assets/**").addResourceLocations("file:node_modules/").setCacheControl(CacheControl.maxAge(1, TimeUnit.DAYS));
registry.addResourceHandler("/js/**").addResourceLocations("file:src/main/app/js/").setCacheControl(CacheControl.maxAge(1, TimeUnit.DAYS));
registry.addResourceHandler("/css/**").addResourceLocations("file:src/main/app/css/").setCacheControl(CacheControl.maxAge(1, TimeUnit.DAYS));
registry.addResourceHandler("/images/**").addResourceLocations("file:src/main/resources/static/images/").setCacheControl(CacheControl.maxAge(1, TimeUnit.DAYS));
registry.addResourceHandler("/assets/**").addResourceLocations("file:node_modules/")
.setCacheControl(CacheControl.maxAge(1, TimeUnit.DAYS));
registry.addResourceHandler("/js/**").addResourceLocations("file:src/main/app/js/")
.setCacheControl(CacheControl.maxAge(1, TimeUnit.DAYS));
registry.addResourceHandler("/css/**").addResourceLocations("file:src/main/app/css/")
.setCacheControl(CacheControl.maxAge(1, TimeUnit.DAYS));
registry.addResourceHandler("/images/**").addResourceLocations("file:src/main/resources/static/images/")
.setCacheControl(CacheControl.maxAge(1, TimeUnit.DAYS));
super.addResourceHandlers(registry);
}
}
Expand All @@ -74,7 +79,9 @@ protected void configure(HttpSecurity http) throws Exception {
http
.csrf().disable()
.authorizeRequests()
.antMatchers("/", "/assets/**/*", "/js/*", "/images/**/*", "/feedback", "/webhook", "/fbwebhook", "/slackwebhook", "/embed").permitAll()
.antMatchers("/", "/assets/**/*", "/js/*", "/images/**/*", "/feedback", "/webhook", "/fbwebhook",
"/slackwebhook", "/embed")
.permitAll()
.anyRequest().authenticated()
.and()
.formLogin()
Expand All @@ -88,7 +95,9 @@ protected void configure(HttpSecurity http) throws Exception {
}

@Autowired
protected void configureGlobal(AuthenticationManagerBuilder auth, @Value("${admin.username}") String username, @Value("${admin.password}") String password, @Value("${chatbot.baseUrl}") String baseUrl) throws Exception {
protected void configureGlobal(AuthenticationManagerBuilder auth, @Value("${admin.username}") String username,
@Value("${admin.password}") String password, @Value("${chatbot.baseUrl}") String baseUrl)
throws Exception {
this.baseUrl = baseUrl;
auth
.inMemoryAuthentication()
Expand All @@ -108,33 +117,33 @@ public static class Helper {

@Autowired
public Helper(final CloudantClient cloudantClient,
WolframRepository wolframRepository,
@Value("${cloudant.chatDB}") String chatDBName,
@Value("${cloudant.feedbackDB}") String feedbackDBName,
@Value("${cloudant.explorerDB}") String explorerDBName,
@Value("${tmdb.apiKey}") String tmdbApiKey) {
WolframRepository wolframRepository,
@Value("${cloudant.chatDB}") String chatDBName,
@Value("${cloudant.feedbackDB}") String feedbackDBName,
@Value("${cloudant.explorerDB}") String explorerDBName,
@Value("${tmdb.apiKey}") String tmdbApiKey) {
try {
chatDB = cloudantClient.database(chatDBName, true);
feedbackDB = cloudantClient.database(feedbackDBName, true);
explorerDB = cloudantClient.database(explorerDBName, true);
}
catch(Exception e) {
logger.info("ERROR HERE");
e.printStackTrace();
}
finally {
} catch (Exception e) {
logger.error("CouchDB / Cloudant is unavailable. Explorer properties will not be loaded.", e);
} finally {
this.tmdbApiKey = tmdbApiKey;
this.wolframRepository = wolframRepository;

riveScriptBot = new RiveScriptBot();
eliza = new ElizaMain();
eliza.readScript(true, "src/main/resources/eliza/script");

sparql = new SPARQL(explorerDB);
sparql = (explorerDB != null)
? new SPARQL(explorerDB)
: SPARQL.disabled();

languageTool = new JLanguageTool(new AmericanEnglish());
for (Rule rule : languageTool.getAllActiveRules()) {
if (rule instanceof SpellingCheckRule) {
List<String> wordsToIgnore = Arrays.asList(new String[] {"nlp", "merkel"});
List<String> wordsToIgnore = Arrays.asList(new String[] { "nlp", "merkel" });
((SpellingCheckRule) rule).addIgnoreTokens(wordsToIgnore);
}
}
Expand Down Expand Up @@ -169,6 +178,10 @@ public Database getExplorerDB() {
return explorerDB;
}

public boolean isExplorerDBAvailable() {
return explorerDB != null;
}

public SPARQL getSparql() {
return sparql;
}
Expand Down
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