si-sun commented on a change in pull request #4169: URL: https://github.com/apache/nifi/pull/4169#discussion_r463565782
########## File path: nifi-nar-bundles/nifi-smb-bundle/nifi-smb-processors/src/main/java/org/apache/nifi/processors/smb/PutSmbFile.java ########## @@ -0,0 +1,334 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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 org.apache.nifi.processors.smb; + +import org.apache.nifi.annotation.behavior.InputRequirement; +import org.apache.nifi.annotation.behavior.InputRequirement.Requirement; +import org.apache.nifi.components.PropertyDescriptor; +import org.apache.nifi.components.ValidationContext; +import org.apache.nifi.components.ValidationResult; +import org.apache.nifi.flowfile.FlowFile; +import org.apache.nifi.annotation.behavior.ReadsAttribute; +import org.apache.nifi.annotation.behavior.ReadsAttributes; +import org.apache.nifi.annotation.lifecycle.OnScheduled; +import org.apache.nifi.annotation.documentation.CapabilityDescription; +import org.apache.nifi.annotation.documentation.SeeAlso; +import org.apache.nifi.annotation.documentation.Tags; +import org.apache.nifi.processor.exception.ProcessException; +import org.apache.nifi.processor.AbstractProcessor; +import org.apache.nifi.processor.ProcessContext; +import org.apache.nifi.processor.ProcessSession; +import org.apache.nifi.processor.ProcessorInitializationContext; +import org.apache.nifi.processor.Relationship; +import org.apache.nifi.processor.util.StandardValidators; +import org.apache.nifi.expression.ExpressionLanguageScope; +import org.apache.nifi.flowfile.attributes.CoreAttributes; +import org.apache.nifi.logging.ComponentLog; + +import java.util.ArrayList; +import java.util.Collection; +import java.util.Collections; +import java.util.HashSet; +import java.util.List; +import java.util.Set; +import java.util.concurrent.TimeUnit; +import java.net.URI; + +import com.hierynomus.smbj.SMBClient; +import com.hierynomus.smbj.connection.Connection; +import com.hierynomus.smbj.auth.AuthenticationContext; +import com.hierynomus.smbj.share.DiskShare; +import com.hierynomus.smbj.session.Session; +import com.hierynomus.msfscc.FileAttributes; +import com.hierynomus.msdtyp.AccessMask; +import com.hierynomus.mssmb2.SMB2ShareAccess; +import com.hierynomus.mssmb2.SMB2CreateDisposition; +import com.hierynomus.mssmb2.SMB2CreateOptions; +import com.hierynomus.smbj.share.File; +import java.io.OutputStream; +import java.util.EnumSet; + +@InputRequirement(Requirement.INPUT_REQUIRED) +@Tags({"samba, smb, cifs, files, put"}) +@CapabilityDescription("Writes the contents of a FlowFile to a samba network location. " + + "Use this processor instead of a cifs mounts if share access control is important." + + "Configure the Hostname, Share and Directory accordingly: \\\\[Hostname]\\[Share]\\[path\\to\\Directory]") +@SeeAlso({GetSmbFile.class}) +@ReadsAttributes({@ReadsAttribute(attribute="filename", description="The filename to use when writing the FlowFile to the network folder.")}) +public class PutSmbFile extends AbstractProcessor { + public static final String SHARE_ACCESS_NONE = "none"; + public static final String SHARE_ACCESS_READ = "read"; + public static final String SHARE_ACCESS_READDELETE = "read, delete"; + public static final String SHARE_ACCESS_READWRITEDELETE = "read, write, delete"; + + public static final String REPLACE_RESOLUTION = "replace"; + public static final String IGNORE_RESOLUTION = "ignore"; + public static final String FAIL_RESOLUTION = "fail"; + + public static final PropertyDescriptor HOSTNAME = new PropertyDescriptor.Builder() + .name("Hostname") + .description("The network host to which files should be written.") + .required(true) + .addValidator(StandardValidators.NON_EMPTY_VALIDATOR) + .build(); + public static final PropertyDescriptor SHARE = new PropertyDescriptor.Builder() + .name("Share") + .description("The network share to which files should be written. This is the \"first folder\"" + + "after the hostname: \\\\hostname\\[share]\\dir1\\dir2") + .required(true) + .addValidator(StandardValidators.NON_EMPTY_VALIDATOR) + .build(); + public static final PropertyDescriptor DIRECTORY = new PropertyDescriptor.Builder() + .name("Directory") + .description("The network folder to which files should be written. This is the remaining relative " + + "path after the share: \\\\hostname\\share\\[dir1\\dir2]. You may use expression language.") + .required(false) + .addValidator(StandardValidators.NON_EMPTY_VALIDATOR) + .expressionLanguageSupported(ExpressionLanguageScope.FLOWFILE_ATTRIBUTES) + .build(); + public static final PropertyDescriptor DOMAIN = new PropertyDescriptor.Builder() + .name("Domain") + .description("The domain used for authentication. Optional, in most cases username and password is sufficient.") + .required(false) + .addValidator(StandardValidators.NON_EMPTY_VALIDATOR) + .build(); + public static final PropertyDescriptor USERNAME = new PropertyDescriptor.Builder() + .name("Username") + .description("The username used for authentication. If no username is set then anonymous authentication is attempted.") + .required(false) + .addValidator(StandardValidators.NON_EMPTY_VALIDATOR) + .build(); + public static final PropertyDescriptor PASSWORD = new PropertyDescriptor.Builder() + .name("Password") + .description("The password used for authentication. Required if Username is set.") + .required(false) + .addValidator(StandardValidators.NON_EMPTY_VALIDATOR) + .sensitive(true) + .build(); + public static final PropertyDescriptor CREATE_DIRS = new PropertyDescriptor.Builder() + .name("Create Missing Directories") + .description("If true, then missing destination directories will be created. If false, flowfiles are penalized and sent to failure.") + .required(true) + .allowableValues("true", "false") + .defaultValue("false") + .build(); + public static final PropertyDescriptor SHARE_ACCESS = new PropertyDescriptor.Builder() + .name("Share Access Strategy") + .description("Indicates which shared access are granted on the file during the write. " + + "None is the most restrictive, but the safest setting to prevent corruption.") + .required(true) + .defaultValue(SHARE_ACCESS_NONE) + .allowableValues(SHARE_ACCESS_NONE, SHARE_ACCESS_READ, SHARE_ACCESS_READDELETE, SHARE_ACCESS_READWRITEDELETE) + .build(); + public static final PropertyDescriptor CONFLICT_RESOLUTION = new PropertyDescriptor.Builder() + .name("Conflict Resolution Strategy") + .description("Indicates what should happen when a file with the same name already exists in the output directory") + .required(true) + .defaultValue(REPLACE_RESOLUTION) + .allowableValues(REPLACE_RESOLUTION, IGNORE_RESOLUTION, FAIL_RESOLUTION) + .build(); + public static final PropertyDescriptor BATCH_SIZE = new PropertyDescriptor.Builder() + .name("Batch Size") + .description("The maximum number of files to put in each iteration") + .required(true) + .addValidator(StandardValidators.POSITIVE_INTEGER_VALIDATOR) + .defaultValue("100") + .build(); + public static final Relationship REL_SUCCESS = new Relationship.Builder() + .name("success") + .description("Files that have been successfully written to the output network path are transferred to this relationship") + .build(); + + public static final Relationship REL_FAILURE = new Relationship.Builder() + .name("failure") + .description("Files that could not be written to the output network path for some reason are transferred to this relationship") + .build(); + + private List<PropertyDescriptor> descriptors; + + private Set<Relationship> relationships; + + private SMBClient smbClient = null; + private Set<SMB2ShareAccess> sharedAccess; + + @Override + protected void init(final ProcessorInitializationContext context) { + final List<PropertyDescriptor> descriptors = new ArrayList<PropertyDescriptor>(); + descriptors.add(HOSTNAME); + descriptors.add(SHARE); + descriptors.add(DIRECTORY); + descriptors.add(DOMAIN); + descriptors.add(USERNAME); + descriptors.add(PASSWORD); + descriptors.add(CREATE_DIRS); + descriptors.add(SHARE_ACCESS); + descriptors.add(CONFLICT_RESOLUTION); + descriptors.add(BATCH_SIZE); + this.descriptors = Collections.unmodifiableList(descriptors); + + final Set<Relationship> relationships = new HashSet<Relationship>(); + relationships.add(REL_SUCCESS); + relationships.add(REL_FAILURE); + this.relationships = Collections.unmodifiableSet(relationships); + + if (this.smbClient == null) { + initSmbClient(); + } + } + + @Override + public Set<Relationship> getRelationships() { + return this.relationships; + } + + @Override + public final List<PropertyDescriptor> getSupportedPropertyDescriptors() { + return descriptors; + } + + @OnScheduled + public void onScheduled(final ProcessContext context) { + + switch (context.getProperty(SHARE_ACCESS).getValue()) { + case SHARE_ACCESS_NONE: + sharedAccess = Collections.<SMB2ShareAccess>emptySet(); + break; + case SHARE_ACCESS_READ: + sharedAccess = EnumSet.of(SMB2ShareAccess.FILE_SHARE_READ); + break; + case SHARE_ACCESS_READDELETE: + sharedAccess = EnumSet.of(SMB2ShareAccess.FILE_SHARE_READ, SMB2ShareAccess.FILE_SHARE_DELETE); + break; + case SHARE_ACCESS_READWRITEDELETE: + sharedAccess = EnumSet.of(SMB2ShareAccess.FILE_SHARE_READ, SMB2ShareAccess.FILE_SHARE_WRITE, SMB2ShareAccess.FILE_SHARE_DELETE); + break; + } + } + + @Override + protected Collection<ValidationResult> customValidate(ValidationContext validationContext) { + Collection<ValidationResult> set = Collections.emptySet(); + if (validationContext.getProperty(USERNAME).isSet() && !validationContext.getProperty(PASSWORD).isSet()) { + set.add(new ValidationResult.Builder().explanation("Password must be set if username is supplied.").build()); + } + return set; + } + + private void initSmbClient() { + initSmbClient(new SMBClient()); + } + + void initSmbClient(SMBClient smbClient) { + this.smbClient = smbClient; + } + + @Override + public void onTrigger(final ProcessContext context, final ProcessSession session) throws ProcessException { + final int batchSize = context.getProperty(BATCH_SIZE).asInteger(); + List<FlowFile> flowFiles = session.get(batchSize); + if ( flowFiles.isEmpty() ) { + return; + } + final ComponentLog logger = getLogger(); + logger.debug("Processing next {} flowfiles", new Object[]{flowFiles.size()}); + + final String hostname = context.getProperty(HOSTNAME).getValue(); + final String shareName = context.getProperty(SHARE).getValue(); + + final String domain = context.getProperty(DOMAIN).getValue(); + final String username = context.getProperty(USERNAME).getValue(); + String password = context.getProperty(PASSWORD).getValue(); + + AuthenticationContext ac = null; + if (username != null && password != null) { + ac = new AuthenticationContext( + username, + password.toCharArray(), + domain); + } else { + ac = AuthenticationContext.anonymous(); + } + + try (Connection connection = smbClient.connect(hostname); + Session smbSession = connection.authenticate(ac); + DiskShare share = (DiskShare) smbSession.connectShare(shareName)) { + + for (FlowFile flowFile : flowFiles) { + String directory = context.getProperty(DIRECTORY).evaluateAttributeExpressions(flowFile).getValue(); + final String filename = flowFile.getAttribute(CoreAttributes.FILENAME.key()); + final long sendStart = System.nanoTime(); + String fullPath; + + if (directory == null) { + directory = ""; + fullPath = filename; + } else { + fullPath = directory + "\\" + filename; + + // missing directory handling + if (context.getProperty(CREATE_DIRS).asBoolean() && !share.folderExists(directory)) { + logger.debug("Creating folder {}", new Object[]{directory}); + share.mkdir(directory); + } + } + + final URI uri = new URI("smb", hostname, "/" + fullPath.replace('\\', '/'), null); + + // replace strategy handling + SMB2CreateDisposition createDisposition = SMB2CreateDisposition.FILE_OVERWRITE_IF; + final String conflictResolution = context.getProperty(CONFLICT_RESOLUTION).getValue(); + if (!conflictResolution.equals(REPLACE_RESOLUTION) && share.fileExists(fullPath)) { + if (conflictResolution.equals(IGNORE_RESOLUTION)) { + session.transfer(flowFile, REL_SUCCESS); + logger.info("Transferring {} to success because file with same name already exists", new Object[]{flowFile}); + continue; + } else if (conflictResolution.equals(FAIL_RESOLUTION)) { + flowFile = session.penalize(flowFile); + logger.warn("Penalizing {} and routing to failure as configured because file with the same name already exists", new Object[]{flowFile}); + session.transfer(flowFile, REL_FAILURE); + continue; + } + } + + + try (File f = share.openFile( + fullPath, + EnumSet.of(AccessMask.GENERIC_ALL), Review comment: ok, update to GENERIC_WRITE ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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