Remove code smells from policyagent/clients

[nonrtric.git] / policy-agent / src / main / java / org / oransc / policyagent / clients / OscA1Client.java

diff --git a/policy-agent/src/main/java/org/oransc/policyagent/clients/OscA1Client.java b/policy-agent/src/main/java/org/oransc/policyagent/clients/OscA1Client.java
index 273f27b..d03dbb4 100644 (file)
--- a/policy-agent/src/main/java/org/oransc/policyagent/clients/OscA1Client.java
+++ b/policy-agent/src/main/java/org/oransc/policyagent/clients/OscA1Client.java
@@ -21,52 +21,150 @@
 package org.oransc.policyagent.clients;
 
 import java.lang.invoke.MethodHandles;
-import java.util.Collection;
+import java.util.ArrayList;
+import java.util.List;
 
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
 import org.oransc.policyagent.configuration.RicConfig;
 import org.oransc.policyagent.repository.Policy;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.springframework.web.util.UriComponentsBuilder;
+import reactor.core.publisher.Flux;
 import reactor.core.publisher.Mono;
 
 public class OscA1Client implements A1Client {
+    private static final String URL_PREFIX = "/a1-p";
+
+    private static final String POLICYTYPES = "/policytypes";
+    private static final String CREATE_SCHEMA = "create_schema";
+    private static final String TITLE = "title";
+
+    private static final String HEALTHCHECK = "/healthcheck";
+
+    private static final UriComponentsBuilder POLICY_TYPE_SCHEMA_URI =
+        UriComponentsBuilder.fromPath("/policytypes/{policy-type-name}");
+
+    private static final UriComponentsBuilder POLICY_URI =
+        UriComponentsBuilder.fromPath("/policytypes/{policy-type-name}/policies/{policy-id}");
+
+    private static final UriComponentsBuilder POLICY_IDS_URI =
+        UriComponentsBuilder.fromPath("/policytypes/{policy-type-name}/policies");
+
+    private static final UriComponentsBuilder POLICY_STATUS_URI =
+        UriComponentsBuilder.fromPath("/policytypes/{policy-type-name}/policies/{policy-id}/status");
+
     private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
 
-    private final RicConfig ricConfig;
+    private final AsyncRestClient restClient;
 
     public OscA1Client(RicConfig ricConfig) {
-        this.ricConfig = ricConfig;
-        logger.debug("OscA1Client for ric: {}", this.ricConfig.name());
+        String baseUrl = ricConfig.baseUrl() + URL_PREFIX;
+        this.restClient = new AsyncRestClient(baseUrl);
+        if (logger.isDebugEnabled()) {
+            logger.debug("OscA1Client for ric: {}", ricConfig.name());
+        }
+    }
+
+    public OscA1Client(AsyncRestClient restClient) {
+        this.restClient = restClient;
     }
 
     @Override
-    public Mono<Collection<String>> getPolicyTypeIdentities() {
-        return Mono.error(new Exception("Not impl"));
+    public Mono<List<String>> getPolicyTypeIdentities() {
+        return restClient.get(POLICYTYPES) //
+            .flatMap(this::parseJsonArrayOfString);
     }
 
     @Override
-    public Mono<Collection<String>> getPolicyIdentities() {
-        return Mono.error(new Exception("Not impl"));
+    public Mono<List<String>> getPolicyIdentities() {
+        return getPolicyTypeIdentities() //
+            .flatMapMany(types -> Flux.fromIterable(types)) //
+            .flatMap(type -> getPolicyIdentitiesById(type)) //
+            .flatMap(policyIds -> Flux.fromIterable(policyIds)) //
+            .collectList();
     }
 
     @Override
     public Mono<String> getPolicyTypeSchema(String policyTypeId) {
-        return Mono.error(new Exception("Not impl"));
+        String uri = POLICY_TYPE_SCHEMA_URI.buildAndExpand(policyTypeId).toUriString();
+        return restClient.get(uri) //
+            .flatMap(response -> getCreateSchema(response, policyTypeId));
     }
 
     @Override
     public Mono<String> putPolicy(Policy policy) {
-        return Mono.error(new Exception("Not impl"));
+        String uri = POLICY_URI.buildAndExpand(policy.type().name(), policy.id()).toUriString();
+        return restClient.put(uri, policy.json());
     }
 
     @Override
-    public Mono<String> deletePolicy(String policyId) {
-        return Mono.error(new Exception("Not impl"));
+    public Mono<String> deletePolicy(Policy policy) {
+        return deletePolicyById(policy.type().name(), policy.id());
     }
 
     @Override
     public Mono<A1ProtocolType> getProtocolVersion() {
-        return Mono.error(new Exception("Not impl"));
+        return restClient.get(HEALTHCHECK) //
+            .flatMap(resp -> Mono.just(A1ProtocolType.OSC_V1));
+    }
+
+    @Override
+    public Flux<String> deleteAllPolicies() {
+        return getPolicyTypeIdentities() //
+            .flatMapMany(types -> Flux.fromIterable(types)) //
+            .flatMap(typeId -> deletePoliciesForType(typeId)); //
     }
 
+    @Override
+    public Mono<String> getPolicyStatus(Policy policy) {
+        String uri = POLICY_STATUS_URI.buildAndExpand(policy.type().name(), policy.id()).toUriString();
+        return restClient.get(uri);
+
+    }
+
+    private Mono<List<String>> getPolicyIdentitiesById(String typeId) {
+        String uri = POLICY_IDS_URI.buildAndExpand(typeId).toUriString();
+        return restClient.get(uri) //
+            .flatMap(this::parseJsonArrayOfString);
+    }
+
+    private Mono<String> getCreateSchema(String policyTypeResponse, String policyTypeId) {
+        try {
+            JSONObject obj = new JSONObject(policyTypeResponse);
+            JSONObject schemaObj = obj.getJSONObject(CREATE_SCHEMA);
+            schemaObj.put(TITLE, policyTypeId);
+            return Mono.just(schemaObj.toString());
+        } catch (Exception e) {
+            logger.error("Unexcpected response for policy type: {}", policyTypeResponse, e);
+            return Mono.error(e);
+        }
+    }
+
+    private Mono<String> deletePolicyById(String typeId, String policyId) {
+        String uri = POLICY_URI.buildAndExpand(typeId, policyId).toUriString();
+        return restClient.delete(uri);
+    }
+
+    private Flux<String> deletePoliciesForType(String typeId) {
+        return getPolicyIdentitiesById(typeId) //
+            .flatMapMany(policyIds -> Flux.fromIterable(policyIds)) //
+            .flatMap(policyId -> deletePolicyById(typeId, policyId)); //
+    }
+
+    private Mono<List<String>> parseJsonArrayOfString(String inputString) {
+        try {
+            List<String> arrayList = new ArrayList<>();
+            JSONArray jsonArray = new JSONArray(inputString);
+            for (int i = 0; i < jsonArray.length(); i++) {
+                arrayList.add(jsonArray.getString(i));
+            }
+            logger.debug("A1 client: received list = {}", arrayList);
+            return Mono.just(arrayList);
+        } catch (JSONException ex) { // invalid json
+            return Mono.error(ex);
+        }
+    }
 }