github.com/m3db/m3@v1.5.0/src/m3em/agent/options.go (about)

     1  // Copyright (c) 2017 Uber Technologies, Inc.
     2  //
     3  // Permission is hereby granted, free of charge, to any person obtaining a copy
     4  // of this software and associated documentation files (the "Software"), to deal
     5  // in the Software without restriction, including without limitation the rights
     6  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     7  // copies of the Software, and to permit persons to whom the Software is
     8  // furnished to do so, subject to the following conditions:
     9  //
    10  // The above copyright notice and this permission notice shall be included in
    11  // all copies or substantial portions of the Software.
    12  //
    13  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    14  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    15  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    16  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    17  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    18  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    19  // THE SOFTWARE.
    20  
    21  package agent
    22  
    23  import (
    24  	"fmt"
    25  	"os"
    26  	"time"
    27  
    28  	"github.com/m3db/m3/src/m3em/os/exec"
    29  	xclock "github.com/m3db/m3/src/x/clock"
    30  	"github.com/m3db/m3/src/x/instrument"
    31  )
    32  
    33  const (
    34  	// defaultHeartbeatTimeout is the default heartbeat timeout
    35  	defaultHeartbeatTimeout = 2 * time.Minute
    36  
    37  	// defaultNewFileMode is the file mode used for new files by default
    38  	defaultNewFileMode = os.FileMode(0666)
    39  
    40  	// defaultNewDirectoryMode is the file mode used for new directories by default
    41  	defaultNewDirectoryMode = os.ModeDir | os.FileMode(0755)
    42  )
    43  
    44  var (
    45  	defaultNoErrorFn = func() error {
    46  		return nil
    47  	}
    48  )
    49  
    50  type opts struct {
    51  	iopts            instrument.Options
    52  	workingDir       string
    53  	execGenFn        ExecGenFn
    54  	initFn           HostResourcesFn
    55  	releaseFn        HostResourcesFn
    56  	envMap           exec.EnvMap
    57  	heartbeatTimeout time.Duration
    58  	nowFn            xclock.NowFn
    59  	newFileMode      os.FileMode
    60  	newDirectoryMode os.FileMode
    61  }
    62  
    63  // NewOptions constructs new options
    64  func NewOptions(io instrument.Options) Options {
    65  	return &opts{
    66  		iopts:            io,
    67  		initFn:           defaultNoErrorFn,
    68  		releaseFn:        defaultNoErrorFn,
    69  		heartbeatTimeout: defaultHeartbeatTimeout,
    70  		nowFn:            time.Now,
    71  		newFileMode:      defaultNewFileMode,
    72  		newDirectoryMode: defaultNewDirectoryMode,
    73  	}
    74  }
    75  
    76  func (o *opts) Validate() error {
    77  	if o.execGenFn == nil {
    78  		return fmt.Errorf("ExecGenFn is not set")
    79  	}
    80  
    81  	if o.workingDir == "" {
    82  		return fmt.Errorf("WorkingDirectory is not set")
    83  	}
    84  
    85  	return nil
    86  }
    87  
    88  func (o *opts) SetInstrumentOptions(io instrument.Options) Options {
    89  	o.iopts = io
    90  	return o
    91  }
    92  
    93  func (o *opts) InstrumentOptions() instrument.Options {
    94  	return o.iopts
    95  }
    96  
    97  func (o *opts) SetWorkingDirectory(wd string) Options {
    98  	o.workingDir = wd
    99  	return o
   100  }
   101  
   102  func (o *opts) WorkingDirectory() string {
   103  	return o.workingDir
   104  }
   105  
   106  func (o *opts) SetExecGenFn(fn ExecGenFn) Options {
   107  	o.execGenFn = fn
   108  	return o
   109  }
   110  
   111  func (o *opts) ExecGenFn() ExecGenFn {
   112  	return o.execGenFn
   113  }
   114  
   115  func (o *opts) SetInitHostResourcesFn(fn HostResourcesFn) Options {
   116  	o.initFn = fn
   117  	return o
   118  }
   119  
   120  func (o *opts) InitHostResourcesFn() HostResourcesFn {
   121  	return o.initFn
   122  }
   123  
   124  func (o *opts) SetReleaseHostResourcesFn(fn HostResourcesFn) Options {
   125  	o.releaseFn = fn
   126  	return o
   127  }
   128  
   129  func (o *opts) ReleaseHostResourcesFn() HostResourcesFn {
   130  	return o.releaseFn
   131  }
   132  
   133  func (o *opts) SetEnvMap(em exec.EnvMap) Options {
   134  	o.envMap = em
   135  	return o
   136  }
   137  
   138  func (o *opts) EnvMap() exec.EnvMap {
   139  	return o.envMap
   140  }
   141  
   142  func (o *opts) SetHeartbeatTimeout(t time.Duration) Options {
   143  	o.heartbeatTimeout = t
   144  	return o
   145  }
   146  
   147  func (o *opts) HeartbeatTimeout() time.Duration {
   148  	return o.heartbeatTimeout
   149  }
   150  
   151  func (o *opts) SetNowFn(fn xclock.NowFn) Options {
   152  	o.nowFn = fn
   153  	return o
   154  }
   155  
   156  func (o *opts) NowFn() xclock.NowFn {
   157  	return o.nowFn
   158  }
   159  
   160  func (o *opts) SetNewFileMode(value os.FileMode) Options {
   161  	o.newFileMode = value
   162  	return o
   163  }
   164  
   165  func (o *opts) NewFileMode() os.FileMode {
   166  	return o.newFileMode
   167  }
   168  
   169  func (o *opts) SetNewDirectoryMode(value os.FileMode) Options {
   170  	o.newDirectoryMode = value
   171  	return o
   172  }
   173  
   174  func (o *opts) NewDirectoryMode() os.FileMode {
   175  	return o.newDirectoryMode
   176  }